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Novel layered K0.7Mn0.7Ni0.3O2 cathode material with enlarged diffusion channels for high energy density sodium-ion batteries

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Science China materials 2020年第7期63卷 1163-1170页

作者： Jinghui Chen Zhitong Xiao Jiashen Meng Jinzhi Sheng Yanan Xu Junjun Wang Chunhua Han Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

As promising,low-cost alternatives of lithiumion batteries for large-scale electric energy storage,sodiumion batteries(SIBs)have been studied by many ***,the relatively large size of Na+leads to sluggish diffusion kinetics and poor cycling stability in most cathode materials,restricting their further *** this work,we demonstrated a novel K+-intercalated Mn/Ni-based layered oxide material(K0.7Mn0.7Ni0.3O2,denoted as KMNO)with stabilized and enlarged diffusion channels for high energy density SIBs.A spontaneous ion exchange behavior in forming K0.1Na0.7Mn0.7Ni0.3O2between the KMNO electrode and the sodium ion electrolyte was clearly revealed by in situ X-ray diffraction and ex situ inductively coupled plasma *** interlayer space varied from 6.90 to 5.76?,larger than that of Na0.7Mn0.7Ni0.3O2(5.63?).The enlarged ionic diffusion channels can effectively increase the ionic diffusion coefficient and simultaneously provide more K+storage sites in the product *** a proof-of-concept application,the SIBs with the as-prepared KMNO as a cathode display a high reversible discharge capacity(161.8 mA h g-1at0.1 A g-1),high energy density(459 W h kg-1)and superior rate capability of 71.1 mA h g-1at 5 A *** work demonstrates that the K+pre-intercalation strategy endows the layered metal oxides with excellent sodium storage performance,which provides new directions for the design of cathode materials for various batteries.

关键词： K0.7Mn0.7Ni0.3O2 K^+pre-intercalation enlarged layered structure high energy density sodium-ion batteries

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3D printing of Nd: YAG transparent composite ceramics

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Ceramics International 2025年

作者： Ji, Haohao Xie, Mengmeng Liu, Yu Chen, Nianjiang Wang, Shiwei Liu, Dianzi Gao, Wenlan Wang, Haoran Dong, Yanhao Zhang, Jian State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai200050 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China School of Mechanical Engineering Jiangnan University Jiangsu Wuxi214122 China Science and Technology on Solid-State Laser Laboratory Beijing100015 China School of Engineering University of East Anglia NorwichNR4 7TJ United Kingdom State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China

The application of 3D printed transparent composite ceramics with designable gain profile in solid-state lasers has garnered increasing interest. Problems including the poor performance of slurries, defects generated in the green bodies during printing and the uncontrolled densification process between ceramics with different components have deteriorated the optical quality of transparent composite ceramics prepared by direct ink writing (DIW), leading to the limitations on the realization of high-power laser outputs. To solve this problem, a systematic investigation of Nd: YAG transparent composite ceramics was conducted throughout the fabrication process, including DIW with the capability of dual-material switching, vacuum sintering and hot isostatic pressing (HIP). First, the ceramic slurries with good printability and high solids loading were formulated by adjusting the dispersant and thickener contents. The sintering behaviors of undoped YAG and Nd: YAG ceramics were investigated to enhance the optical quality of transparent composite ceramics. The Nd ions diffusion distances of the interface between undoped YAG and Nd: YAG regions in the vertical and horizontal composite ceramics were tested and calculated to be 50.1 μm and 43.5 μm, respectively. Finally, the laser measurement of the YAG/0.3 at. % Nd: YAG/YAG transparent composite ceramic with the dimension of 3 × 3 × 4 mm3 indicated that the maximum output power of 2.15 W with the slope efficiency of 40.2 % was achieved at the absorbed pump power of 5.70 W. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Solid state lasers

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Searching for neutrinoless double-beta decay of 136Xe with PandaX-4T

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Science Bulletin 2025年第11期70卷 1779-1785页

作者： Zhang, Shu Bo, Zihao Chen, Wei Chen, Xun Chen, Yunhua Cheng, Zhaokan Cui, Xiangyi Fan, Yingjie Fang, Deqing Gao, Zhixing Geng, Lisheng Giboni, Karl Guo, Xunan Guo, Xuyuan Guo, Zichao Han, Chencheng Han, Ke He, Changda He, Jinrong Huang, Di Huang, Houqi Huang, Junting Hou, Ruquan Hou, Yu Ji, Xiangdong Ji, Xiangpan Ju, Yonglin Li, Chenxiang Li, Jiafu Li, Mingchuan Li, Shuaijie Li, Tao Li, Zhiyuan Lin, Qing Liu, Jianglai Lu, Congcong Lu, Xiaoying Luo, Lingyin Luo, Yunyang Ma, Wenbo Ma, Yugang Mao, Yajun Meng, Yue Ning, Xuyang Pang, Binyu Qi, Ningchun Qian, Zhicheng Ren, Xiangxiang Shan, Dong Shang, Xiaofeng Shao, Xiyuan Shen, Guofang Shen, Manbin Sun, Wenliang Tao, Yi Wang, Anqing Wang, Guanbo Wang, Hao Wang, Jiamin Wang, Lei Wang, Meng Wang, Qiuhong Wang, Shaobo Wang, Siguang Wang, Wei Wang, Xiuli Wang, Xu Wang, Zhou Wei, Yuehuan Wu, Weihao Wu, Yuan Xiao, Mengjiao Xiao, Xiang Xiong, Kaizhi Xu, Yifan Yao, Shunyu Yan, Binbin Yan, Xiyu Yang, Yong Ye, Peihua Yu, Chunxu Yuan, Ying Yuan, Zhe Yun, Youhui Zeng, Xinning Zhang, Minzhen Zhang, Peng Zhang, Shibo Zhang, Tao Zhang, Wei Zhang, Yang Zhang, Yingxin Zhang, Yuanyuan Zhao, Li Zhou, Jifang Zhou, Jiaxu Zhou, Jiayi Zhou, Ning Zhou, Xiaopeng Zhou, Yubo Zhou, Zhizhen New Cornerstone Science Laboratory Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai201210 China School of Physics Sun Yat-sen University Guangzhou510275 China School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology Ministry of Education Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai200240 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu610213 China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province Xichang615000 China Yalong River Hydropower Development Company Chengdu610051 China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen University Zhuhai519082 China Department of Physics Yantai University Yantai264005 China Key Laboratory of Nuclear Physics and Ion-beam Application Ministry of Education Institute of Modern Physics Fudan University Shanghai200433 China School of Physics Beihang University Beijing102206 China Peng Huanwu Collaborative Center for Research and Education Beihang University Beijing100191 China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing102206 China Southern Center for Nuclear-Science Theory Institute of Modern Physics Chinese Academy of Sciences Huizhou516000 China SJTU Paris Elite Institute of Technology Shanghai Jiao Tong University Shanghai200240 China School of Mechanical Engineering Shanghai Jiao Tong University Shanghai200240 China Department of Physics University of Maryland College Park Maryland20742 United States School of Physics Nankai University Tianjin300071 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei230026 China Department of Modern Physics University of Science and Technology of China Hefei230026 China Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary Sci

We report the search for neutrinoless double-beta decay of 136Xe from the PandaX-4T experiment with a 3.7-tonne natural xenon target. The data reconstruction and the background modeling are optimized in the MeV energy region. A blind analysis is performed with data from the commissioning run and the first science run. No significant excess of signal over the background is observed. A lower limit on the half-life of 136Xe neutrinoless double-beta decay is established to be 2.1×1024 yr at the 90% confidence level, with a 136Xe exposure of 44.6 kg⋅yr. Our result represents the most stringent constraint from a natural xenon detector to date. © 2025 Science China Press

关键词： Majorana neutrino Natural xenon detector Neutrinoless double-beta decay

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Effects Of Applied Pressure And Residual Heat Quenching on the Mechanical and Thermal Properties of Al-Mg-Zn-Mn-Fe Alloys

SSRN

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SSRN 2023年

作者： Chen, Jingsi Zhang, Weiwen Zhao, Yuliang Song, Dongfu Wang, Zhi Luo, Zongqiang Guangdong Key Laboratory for Processing Forming of Advanced Metallic Materials South China University of Technology Guangzhou510640 China School of Mechanical and Automotive Engineering South China University of Technology Guangzhou510640 China School of Mechanical Engineering Dongguan University of Technology Dongguan523808 China Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application Institute of New Materials Guangdong Academy of Sciences Guangzhou510650 China National Engineering Research Centre of Near-net-shape Forming for Metallic Materials China

In this study, the effects of applied pressure (AP) and residual heat quenching (RQ) on the mechanical properties and thermal conductivities of Al-4.6Mg-3.6Zn-0.86Mn-0.48Fe alloys were investigated based on intensively microstructure analysis by scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM) and synchrotron X-ray tomography (SXT). The results indicated that AP and RQ did not change the type of intermetallic;instead, they reduced the length and quantity of lath-like Al6(Fe,Mn), which was prone to crack formation during the tensile process. Moreover, η' precipitation particles were enriched at grain boundaries, which was beneficial for the yield strength of the alloy;the AP+RQ sample exhibited the best mechanical properties of the ultimate tensile strength, yield strength and elongation of 269 MPa, 164 MPa and 11.4%, respectively, which were 19%, 17%, and 83.8% higher than those of the gravity cast (GC) sample. Moreover, the thermal conductivity of the AP+RQ sample did not show significant changes, which were attributed to the reduction in solid solute caused by the increased volume fraction of η' precipitates, thus improving the thermal conductivity;however, the formation of numerous coherent interfaces between η' and the matrix led to increased lattice distortion, resulting in electron scattering. © 2023, The Authors. All rights reserved.

关键词： Aluminum alloys

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Curvature Conservation and Conduction Modulation for Symmetric Charged Ferroelectric Domain Walls

SSRN

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SSRN 2024年

作者： Fan, Yuanyuan Liang, Deshan Yang, Huayu Liang, Chen Dong, Shouzhe Gao, Rongzhen Liang, Minchuan Yang, Jia Wang, Yue Ai, Hui Ma, Ji Ma, Jing Zhang, Jinxing Chen, Long-Qing Wang, Jing Nan, Ce-Wen Huang, Houbing Advanced Research Institute of Multidisciplinary Science School of Materials Science and Engineering Beijing Institute of Technology Beijing100081 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China Analysis & Testing Center Beijing Institute of Technology Beijing100081 China School of Material Science and Engineering Kunming University of Science and Technology Yunnan Kunming650093 China Department of Physics Key Laboratory of Multi-scale Spin Physics Ministry of Education Beijing Normal University Beijing100875 China Department of Materials Science and Engineering Pennsylvania State University University ParkPA16802 United States

Curvature conservation is a common feature for the physical properties with topological constraints, from the macroscopic cosmic string loops to the microscopic quantized vortex rings in superfluid. Interestingly, ferroelectric domain-wall curvature is important to determine its conduction, which is the key parameter for designing domain-wall nanoelectronic devices. Here, we demonstrate the curvature conservation of the charged domain walls confined in ferroelectric topological structures with specific domain symmetry by combining piezoelectric force microscopy, conducting atomic force microscopy and phase-field simulations. Significantly, the intrinsic conductivity of the charged domain walls, exhibits an inverse functional relationship with the local domain-wall curvature in the ferroelectric BiFeO3 nano-islands, which can also be precisely and continuously modulated by applying an electric field. This work provides us with an insightful understanding of the conduction mechanism of charged domain walls confined in ferroelectric topological structures with high degree of spatial symmetry, which paves the way for the application of charged domain walls as flexible conducting channels with continuously changing resistance states to be used for ferroelectric domain-wall memristors. © 2024, The Authors. All rights reserved.

关键词： Domain walls

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Theoretical prediction,synthesis,and crystal structure determination of new MAX phase compound V2SnC

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Journal of advanced Ceramics 2020年第4期9卷 481-492页

作者： Qiang Xu Yanchun Zhou Haiming Zhang Anna Jiang Quanzheng Tao Jun Lu Johanna Rosén Yunhui Niu Salvatore Grasso Chunfeng Hu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing100076China School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing100044China Thin Film Physics Division Department of PhysicsChemistryand Biology(IFM)Linköping UniversityLinköpingSE-58183Sweden State Key Laboratory of Environment-friendly Energy Materials Southwest University of Science and TechnologyMianyang621010China

Guided by the theoretical prediction,a new MAX phase V2SnC was synthesized experimentally for the first time by reaction of V,Sn,and C mixtures at 1000°*** chemical composition and crystal structure of this new compound were identified by the cross-check combination of first-principles calculations,X-ray diffraction(XRD),energy dispersive X-ray spectroscopy(EDS),and high resolution scanning transmission electron microscopy(HR-STEM).The stacking sequence of V2C and Sn layers results in a crystal structure of space group P63/*** a-and c-lattice parameters,which were determined by the Rietveld analysis of powder XRD pattern,are 0.2981(0)nm and 1.3470(6)nm,*** atomic positions are V at 4f(1/3,2/3,0.0776(5)),Sn at 2d(2/3,1/3,1/4),and C at 2a(0,0,0).A new set of XRD data of V2SnC was also *** calculations suggest that this new compound is stable with negative formation energy and formation enthalpy,satisfied Born-Huang criteria of mechanical stability,and positive phonon branches over the Brillouin *** also has low shear deformation resistance c44(second-order elastic constant,cij)and shear modulus(G),positive Cauchy pressure,and low Pugh’s ratio(G/B=0.500<0.571),which is regarded as a quasi-ductile MAX *** mechanism underpinning the quasi-ductility is associated with the presence of a metallic bond.

关键词： V2SnC new MAX phase compound crystal structure first-principles calculations

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Bifunctional Electrocatalyst Junction Engineering: Cop Nanoparticles In-Situ Anchored on Co3(Si2o5)2(Oh)2 Nanosheets for Highly Efficient Water Splitting

SSRN

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SSRN 2022年

作者： Mu, Yang Dong, Xueying Jing, Xuyang Pei, Xiaoyu Zhao, Yunfeng Kou, Zongkui Meng, Changgong Zhang, Yifu State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Dalian116024 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China College of Environmental and Chemical Engineering Dalian University Dalian116622 China

The development of promising bifunctional water splitting electrocatalysts through precise design of composition and structure is a challenging topic. In this work, a novel junction is developed consisting of pure-phase CoP nanoparticles in-situ grown on Co3(Si2O5)2(OH)4 nanosheets, denoted as CoP/CSNSs. Rely on the small adding Co2+ in complex precursor, controllable synthesis of pure-phase CoP without impure phases is achieved, and the perfect nanosheet structure from support can be inherited, the CoP/CSNSs therefore shows the highest electrocatalytic performance for both HER and OER in 1.0 M KOH. Besides, the overall water splitting voltage of CoP/CSNSs(+/-) delivers 1.50 V at 10 mA cm-2, which outperforms that of the commercial Pt/C||RuO2 system. The preferable bifunctional electrocatalytic performance benefits from the optimized electron state of the adjacent dual-active centers, such that surficial CoP contributes to the dissociation of H-OH bonds boosting the Volmer step of HER, and Co3(Si2O5)2(OH)4 support contributes to OH- adsorption facilitating the kinetics of OER. Meanwhile, the advanced nanosheet structure provides more accessible active centers and more efficient charge/mass transport highway. In this work, bifunctional metal silicate electrocatalyst for water dissociation is designed and fabricated for the first time. The simple and effective phase-modulation and structure-control is a promising strategy for continually exploitation of multifunctional metal silicate electrocatalysts. Such low-cost and highly efficient electrocatalysts may create new opportunities for future development of renewable energy conversion technologies. © 2022, The Authors. All rights reserved.

关键词： Nanoparticles

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The rise of intelligent fabric agent from mass-produced advanced fiber materials

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Science Bulletin 2024年第23期69卷 3644-3647页

作者： Pan Li Maiping Yang Yueheng Liu Jing Zhang Sisi He Cuiwei Yang Weizhong Yang Xinyuan Cai Liping Zhu Shenglin Ye Hongyu Sun Chong Hou Ning Zhou Meifang Zhu Guangming Tao Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering and Electronic Information China University of Geosciences(Wuhan)Wuhan 430074China Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of ScienceHarbin Institute of TechnologyShenzhen 518055China Department of Biomedical Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China Shanghai Different Advanced Material Co. Ltd.Shanghai 201502China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Meta Reality Lab Meta PlatformsInc.SunnyvaleCA 94089USA School of Nursing Peking UniversityBeijing 100191China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityNational Clinical Research Center for Cardiovascular DiseasesBeijing 100029China Key Laboratory of Vascular Aging Ministry of EducationTongji Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Physical Education Huazhong University of Science and TechnologyWuhan 430074China

Artificial intelligence(AI)is crucial in driving scientific,technological,and industrial advancements,and it has given rise to an ambient intelligence that can potentially improve the physical execution of healthcare delivery[1,2].Among diverse advanced AI technologies,an intelligent agent with multi-parameter perception,decision-making,and execution capabilities demonstrates the potential for facilitating the development of next-generation optoelectronic *** intelligent agent is a physical or abstract entity that acts autonomously,perceives and interacts with its environment,and communicates with other agents[3].It could perceive dynamic environmental conditions,execute actions,and make appropriate *** emerges as an ideal carrier for human-centered intelligent agents,providing various properties such as perceptibility,adaptability,and *** fabric,known for its unique functionality,has attracted considerable attention from academia and *** 2014,Germany proposed a national strategy called FutureTEX to upgrade the entire textile industry by promoting integration between textiles and other *** years later,the United states announced the establishment of the Revolutionary Fibers and textiles Manufacturing Innovation Institute,which intends to accelerate the revival of fabric *** with conventional fibers,revolutionary fibers focus on the design of multiple materials and structures,enabling the integration of various functionalities into a single *** in the United states,the advent of the digital revolution,advancements in Internet of Things technology,and mature fiber technology significantly boost the development of the intelligent fiber *** commercial applications of intelligent fibers are gradually *** Jacquard,a collaborative effort by Google and Levi’s,presents an intelligent jacket that combines the washability and texture of standard fabrics with the

关键词： agent execution fiber

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双Ⅱ型SnO_(2)@ZnS-ZnSn(OH)_(6)异质结构建内部电场用于高效光催化NO氧化去除

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Science China materials 2023年第4期66卷 1447-1459页

作者：陈邦富欧阳平李宇涵段有雨吕康乐 Sónia A.C.Carabineiro 董帆 Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing 400067China Nanchang Institute of Technology Nanchang 33044China College of Physics and Institute of Advanced Interdisciplinary Studies Chongqing UniversityChongqing 401331China Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission College of Resources and EnvironmentSouthCentral Minzu UniversityWuhan 430074China LAQV-REQUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de LisboaCaparica 2829-516Portugal

精心设计的异质结光催化剂已经被证明能够有效地促进电荷转移,从而实现特定的迁移路径和长的载流子寿命,这在进一步提高性能方面具有巨大的潜力.然而,传统二元异质结光催化剂的光催化性能仍然受到其较低的载流子分离效率的影响.本文报... 详细信息

精心设计的异质结光催化剂已经被证明能够有效地促进电荷转移,从而实现特定的迁移路径和长的载流子寿命,这在进一步提高性能方面具有巨大的潜力.然而,传统二元异质结光催化剂的光催化性能仍然受到其较低的载流子分离效率的影响.本文报道了一种通过原位面对面生长直接合成双Ⅱ型SnO_(2)@ZnS-ZHS(ZHS=ZnSn(OH)_(6))三元异质结的策略.基于可靠的实验和理论计算,揭示了双Ⅱ型SnO_(2)@ZnSZHS的载流子动力学提升机制.SnO_(2)的光生空穴(h+)能够分别迁移到ZHS和ZnS的价带,确保了SnO_(2)@ZnS-ZHS可以保持双氧化电位来产生足够的羟基自由基(·OH)参与NO氧化反应.这种独特的双Ⅱ型SnO_(2)@ZnS-ZHS三元结构在光照30 min后对NO去除率高达44.5%,活性分别是ZHS的23.5倍、SnO_(2)的29.7倍和ZnS的15.9倍.光催化活性提升与独特的双Ⅱ型反应机理反映了SnO_(2)@ZnS-ZHS异质结构的优势,本工作有望为三元异质结的设计提供可行的思路.

关键词：光生空穴电荷转移异质结构 NO氧化载流子动力学载流子寿命氧化电位光催化

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Exploring Cu0–Cu+ Sites for Enhancing Non-Enzymatic Photoelectrochemical Glucose Sensing Performance

SSRN

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SSRN 2023年

作者： Ren, Xiaohui Xu, Feicui Chen, Rongsheng Ma, Feng Shi, Li Liu, Huating Ren, Long Zhang, Hua Ni, Hongwei Xie, Zhongjian The State Key Laboratory of Refractories and Metallurgy Faculty of Materials Wuhan University of Science and Technology Wuhan430081 China Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics Collaborative Innovation Center for Optoelectronic Science and Technology Key Laboratory of Optoelectronic Devices and Systems Ministry of Education and Guangdong Province Shenzhen University Shenzhen518060 China Institute of Advanced Materials and Nanotechnology School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan430081 China School of Materials Science and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China School of Electrical and Electronic Engineering Wuhan Polytechnic University Wuhan430023 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Institute of Pediatrics Shenzhen Children's Hospital Shenzhen518038 China

Photoelectrochemical (PEC) sensing platforms demonstrate outstanding performances towards enzyme-free glucose detection, and exploring glucose reactive electrodes with efficient active sites and enhanced carrier transport/separation behavior would be beneficial for PEC glucose detection. Herein, we fabricated two-dimensional Cu3(PO4)2 nanosheets as the photoactive material for glucose detection. The morphology and structural characterizations prove the existence of balanced Cu0–Cu+ active sites which has been regarded as the key factor on improving PEC performance for fast glucose detection. The photoelectric current of Cu3(PO4)2 nanosheets peeled from Cu3(PO4)2 bulk is three times that of 0 µM at 50 µM, and the response performance is increased by ~9 times compared to Cu3(PO4)2 bulk. Under light conditions, the limit of detection (LOD) as low as 17.68 µM at low concentrations of 20-100 µM, and LOD of 131.69 µM at high concentrations of 100-1000 µM can be achieved. This work might provide the basic understanding and new opportunities in applying two-dimensional Cu3(PO4)2 nanosheets for glucose detection. © 2023, The Authors. All rights reserved.

关键词： Copper compounds

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