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Size control and electronic manipulation of Ru catalyst over B,N codoped carbon network for high-performance hydrogen evolution reaction

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Nano Research 2023年第5期16卷 6212-6219页

作者： Shuai Xu Mang Niu Guowei Zhao Shujun Ming Xingyun Li Qilong Zhu Liang-Xin Ding Minjun Kim Asma A.Alothman Mohammed Sheikh Saleh Mushab Yusuke Yamauchi Institute of Materials for Energy and Environment Institute of Biochemical EngineeringCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China Hubei Key Laboratory of Processing and Application of Catalytic materials Huanggang Normal UniversityHuanggang 438000China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou 350002China Guangdong Provincial Key Lab of Green Chemical Product Technology School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China Australian Institute for Bioengineering and Nanotechnology(AIBN)and School of Chemical Engineering The University of QueenslandBrisbaneQueensland 4072Australia Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

Exploring highly efficient Pt-free catalysts for hydrogen evolution reaction(HER)is of great importance for hydrogen(H2)***,a novel HER electrocatalyst having abundant ultra-small(2–3 nm)Ru electronically confined by a B,N codoped polar carbon surface(Ru/(B-N)-PC)was *** Ru/(B-N)-PC catalyst exhibits a low overpotential of 15 mV at the current density of 10 mA·cm^(−2),a low Tafel slope of 22.6 mV·dec^(−1),superior durability,which outperforms the benchmark Pt/C *** experimental characterizations and theory calculations suggest that an electron communication established between B,N co-doped carbon surface and ultra-small Ru nanoparticles with electrons transferred from N atoms to Ru and backtransferred from Ru to B atoms,which exerts a moderate electronic modification of ***,in turn,affords a modest H adsorption energy and a lower H2O dissociation barrier,leading to the high-performance hydrogen evolution *** work provides meaningful insight into the size control and electronic modulation of Ru catalyst for intrinsic HER activity improvement.

关键词： hydrogen evolution reaction Ru catalyst carbon support doping

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Ce^(3+):Lu_(3)Al_(5)O_(12)–Al_(2)O_(3) optical nanoceramic scintillators elaborated via a low-temperature glass crystallization route

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Journal of Advanced Ceramics 2023年第2期12卷 268-278页

作者： Jie FU Shaowei FENG Yongchang GUO Ying ZHANG Cécile GENEVOIS Emmanuel VERON Mathieu ALLIX Jianqiang LI School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China CNRS CEMHTI UPR 3079Universitéd’OrléansOrléans 45071France University of Chinese Academy of Sciences Beijing 100049China

Transparent Ce:lutetium aluminum garnet(Ce:Lu_(3)A_(l5)O_(12),Ce:LuAG)ceramics have been regarded as potential scintillator materials due to their relatively high density and atomic number(Zeff).However,the current Ce:LuAG ceramics exhibit a light yield much lower than the expected theoretical value due to the inevitable presence of LuAl antisite defects at high sintering *** work demonstrates a low-temperature(1100℃)synthetic strategy for elaborating transparent LuAG–Al_(2)O_(3) nanoceramics through the crystallization of 72 mol%Al_(2)O_(3)–28 mol%Lu_(2)O_(3)(ALu28)bulk *** biphasic nanostructure composed of LuAG and Al_(2)O_(3) nanocrystals makes up the whole ceramic *** of Al_(2)O_(3) is distributed among LuAG grains,and the rest is present inside the LuAG *** dense biphasic LuAG–Al_(2)O_(3) nanoceramics are highly transparent from the visible region to mid-infrared(MIR)region,and particularly the transmittance reaches 82%at 780 ***,LuAl antisite defect-related centers are completely undetectable in X-ray excited luminescence(XEL)spectra of Ce:LuAG–Al_(2)O_(3) nanoceramics with 0.3–1.0 at%*** light yield of 0.3 at%Ce:LuAG–Al_(2)O_(3) nanoceramics is estimated to be 20,000 ph/MeV with short 1μs shaping time,which is far superior to that of commercial Bi_(4)Ge_(3)O_(12)(BGO)single *** results show that a low-temperature glass crystallization route provides an alternative approach for eliminating the antisite defects in LuAG-based ceramics,and is promising to produce garnet-based ceramic materials with excellent properties,thereby meeting the demands of advanced scintillation applications.

关键词： glass crystallization garnet antisite defects Lu_(3)Al_(5)O_(12)-Al_(2)O_(3)(LuAG-Al_(2)O_(3))transparent ceramics nanoceramics scintillation

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NIR-II light triggered burst-release cascade nanoreactor for precise cancer chemotherapy

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Bioactive Materials 2024年第3期33卷 311-323页

作者： Yu-Jing Pan Yang Zhang Biao-Qi Chen Yi Zhao Jin-Yang Wang Chang-Yong Li Da-Gui Zhang Ranjith Kumar Kankala Shi-Bin Wang Gang Liu Ai-Zheng Chen Fujian Provincial Key Laboratory of Biochemical Technology&Institute of Biomaterials and Tissue Engineering Huaqiao UniversityXiamen361021China Center for Nanomedicine and Department of Anesthesiology Perioperative and Pain MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA02115USA State Key Laboratory of Vaccines for Infectious Diseases Xiang An Biomedicine LaboratoryNational Innovation Platform for Industry-Education Integration in Vaccine ResearchState Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsCenter for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China

The current strategy of co-delivering copper ions and disulfiram(DSF)to generate cytotoxic CuET faces limitations in achieving rapid and substantial CuET production,specifically in tumor *** overcome this challenge,we introduce a novel burst-release cascade reactor composed of phase change materials(PCMs)encapsulating ultrasmall Cu_(2-x)Se nanoparticles(NPs)and DSF(DSF/Cu_(2-x)Se@PCM).Once triggered by second near-infrared(NIR-II)light irradiation,the reactor swiftly releases Cu_(2-x)Se NPs and DSF,enabling catalytic reactions that lead to the rapid and massive production of Cu_(2-x)Se-ET complexes,thereby achieving in situ *** mechanism of the burst reaction is due to the unique properties of ultrasmall Cu_(2-x)Se NPs,including their small size,multiple defects,and high surface *** characteristics allow DSF to be directly reduced and chelated on the surface defect sites of Cu_(2-x)Se,forming Cu_(2-x)Se-ET complexes without the need for copper ion ***,Cu_(2-x)Se-ET has demonstrated a similar(to CuET)anti-tumor activity through increased autophagy,but with even greater potency due to its unique two-dimensional-like *** light-triggered cascade of interlocking reactions,coupled with in situ explosive generation of tumor-suppressive substances mediated by the size and valence of Cu_(2-x)Se,presents a promising approach for the development of innovative nanoplatforms in the field of precise tumor chemotherapy.

关键词： Ultrasmall Cu_(2-x)Se nanoparticles High surface activity Nanoreactor Phase change materials Precise chemotherapy

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Hollow structures as drug carriers:Recognition,response,and release

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Nano Research 2022年第2期15卷 739-757页

作者： Decai Zhao Nailiang Yang Lekai Xu Jiang Du Yang Yang Dan Wang State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Green Catalysis Center and College of ChemistrySchool of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001 China Department of Thoracic Surgery Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai 200433China School of Materials Science and Engineering Tongji UniversityShanghai 201804China

Hollow structures have demonstrated great potential in drug delivery owing to their privileged structure,such as high surface-to-volume ratio,low density,large cavities,and hierarchical *** this review,we provide a comprehensive overview of hollow structured materials applied in targeting recognition,smart response,and drug release,and we have addressed the possible chemical factors and reactions in these three *** advantages of hollow nanostructures are summarized as follows:hollow cavity contributes to large loading capacity;a tailored structure helps controllable drug release;variable compounds adapt to flexible application;surface modification facilitates smart responsive ***,because the multiple physical barriers and chemical interactions can be induced by multishells,hollow multishelled structure is considered as a promising material with unique loading and releasing ***,we conclude this review with some perspectives on the future research and development of the hollow structures as drug carriers.

关键词： hollow structure drug delivery system carriers spatiotemporal

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A critical review of ferritin as a drug nanocarrier:Structure,properties,comparative advantages and challenges

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Particuology 2022年第5期20卷 65-84页

作者： Shuang Yin Kenneth Davey Sheng Dai Yongdong Liu Jingxiu Bi School of Chemical Engineering&Advanced Materials Faculty of EngineeringComputer and Mathematical Sciences.University of AdelaideAdelaideAustralia Department of Chemical Engineering Brunei University LondonUxbridge UB83PHUnited Kingdom State Key Laboratory of Biochemistry Engineering.Institute of Process Engineering Chinese Academy of Sciences.BeijingChina

Ferritin stores and releases iron ions in *** is globally important as a drug *** is because of its unique hollow-spherical structure,desirable stability and biological *** drug-loading approaches plus various functionalization approaches have been developed to improve ferritin in response to differing demands in disease ***,we critically review ferritin drug delivery and evaluate its diverse drug-loading and functionalization approaches,we:(1)Introduce basic structural and property information related to ferritin as a drug nanocarrier;(2)Contrast in detail the different means to load drugs and the selection of drug loading means;(3)Discuss multiple ferritin functionalization approaches,together with related advantages and potential risks;and,(4)Compare ferritin with alternative,commonly-used drug *** conclude that despite that no drugs based on ferritin are commercially available,the market potential for it is significant,and evaluate future research *** from this work will be of immediate benefit and interest to a wide range of researchers and manufacturers for drug delivery using ferritin.

关键词： Ferritin Drug delivery Drug nanocarrier Protein functionalization

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Self-assembling bile pigments for cancer diagnosis and therapy

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Aggregate 2021年第1期2卷 84-94页

作者： Kaiwei Chen Ruirui Xing Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijingChina School of Chemical Engineering University of Chinese Academy of SciencesBeijingChina Center for Mesoscience Institute of Process EngineeringChinese Academy of SciencesBeijingChina

Nanomaterials that integrate multiple functions provide promising opportunities for noninvasive and targeted cancer diagnosis and ***,the unclear metabolic pathway to nanomaterials brought difficulties to clinical *** bile pigments are endogenous functional materials with excellent biocompatibility and low *** materials based on endogenous bile pigments provide a decent solution to this *** this review,the features and functions of self-assembling bile pigments are discussed in detail for cancer diagnosis and treatment *** are put on the intrinsic physicochemical characteristics of bile pigments and their applications,including drug delivery,photoacoustic imaging,photothermal therapy,and anti-inflammation *** review will promote the exploration of these areas and tremendously realize the innovative applications of self-assembling biliverdin/bilirubin nanomaterials toward cancer diagnosis and therapy.

关键词： self-assembly endogenous bile pigments nanomaterials cancer diagnosis and therapy

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Spinning from Nature:Engineered Preparation and Application of High-Performance Bio-Based Fibers

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engineering 2022年第7期8卷 100-112页

作者： Zongpu Xu Mingrui Wu Qi Ye Dong Chen Kai Liu Hao Bai State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Applied Bioresources College of Animal SciencesZhejiang UniversityHangzhou 310058China State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou 310027China Institute of Process Equipment College of Energy EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Many natural fibers are lightweight and display remarkable strength and *** properties originate from the fibers’hierarchical structures,assembled from the molecular to macroscopic *** natural spinning systems that produce such fibers are highly energy efficient,inspiring researchers to mimic these processes to realize robust artificial *** developments have been achieved in recent years toward the preparation of high-performance bio-based *** excellent mechanical properties,bio-based fibers can be functionalized with a series of new features,thus expanding their sophisticated applications in smart textiles,electronic sensors,and biomedical ***,recent progress in the construction of bio-based fibers is *** bioinspired spinning methods,strengthening strategies for mechanically strong fibers,and the diverse applications of these fibers are ***,challenges in reproducing the mechanical performance of natural systems and understanding their dynamic spinning process are ***,a perspective on the development of biological fibers is given.

关键词： Bio-based fiber Hierarchical structure Bioinspired spinning Strengthening strategy Fiber applications

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Phase transition controlled construction of Z-scheme heterojunction Ce3+/Ce4+ doped metastable β-Bi2O3/AgI for efficient carrier separation in visible-light-driven photocatalysis

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Journal of Rare Earths 2025年第5期43卷 940-952页

作者： Jin, Zhouzheng Li, Lei Cao, Chunshuai Dong, Huiling Li, Ao Peng, Xueping Ma, Aijing Pan, Shiguang Liu, Dan Gui, Jianzhou State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineering School of Chemical Engineering and Technology Tiangong University Tianjin300387 China Tianjin Cement Industry Design & Research Institute Co. Ltd. Tianjin300400 China Ningxia Coal Industry Co. Ltd. CHN ENERGY Yinchuan750411 China School of Chemistry Tiangong University Tianjin300387 China

Ce-β-Bi2O3/AgI was prepared using solvothermal calcination and in-situ deposition methods. The introduction of Ce can inhibit the conversion of Bi2O3 from β to α phase at high temperatures, promoting the formation of oxygen vacancies (OVs) in the photocatalyst. OVs can adsorb more dissolved oxygen to promote the formation rate of ·O2–. Moreover, the interaction between Ce–Bi2O3 and AgI results in the formation of Z-scheme heterojunctions, which can broaden the light absorption region, facilitate photogenerated carrier separation and transfer and enhance the ability to produce more active oxygen species (ROS). The morphology, crystal, element distribution and photo-electric chemical properties of the Ce–Bi2O3/AgI were analyzed, and the result shows that the optimal ratio of Ce–Bi2O3/AgI photocatalyst achieves a removal rate of 88.63% (180 min) of tetracycline (TC) (20 mg/L) and 100% (120 min) of methyl orange (MO) (20 mg/L). This work clarified the photocatalytic degradation mechanism, providing a promising avenue for developing photocatalytic composites by rare earth metal doping in environmental remediation applications. © 2024 Chinese Society of Rare Earths

关键词： Semiconductor doping

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The Nature of Active Sites for Plasmon-Mediated Photothermal Catalysis and Heat-Coupled Photocatalysis in Dry Reforming of Methane

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Energy & Environmental Materials 2023年第5期6卷 381-388页

作者： Jinqiang Zhang Liang Wang Xiaoli Zhao Lei Shi Haijun Chen Shu Zhang Peng Zhang Shuaijun Wang Laichang Zhang Yinfeng Wang Xiaoyuan Wang Yuezhao Zhu Huayang Zhang Xiaoguang Duan Mingbo Wu Guosheng Shao Shaobin Wang Hongqi Sun School of Engineering Edith Cowan University 270 Joondalup DriveJoondalup WA 6027Australia Jiangsu Key laboratory of Process Enhancement and New Energy Equipment Technology School of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211816China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001China School of Chemical Engineering The University of Adelaide Adelaide South Australia 5005Australia State Key Laboratory of Heavy Oil Processing Institute of New EnergyCollege of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Solar energy-induced catalysis has been attracting intensive interests and its quantum efficiencies in plasmon-mediated photothermal catalysis(P-photothermal catalysis)and external heat-coupled photocatalysis(E-photothermal catalysis)are ultimately determined by the catalyst structure for photo-induced energetic hot ***,different catalysts of supported(TiO_(2)-P25 and Al_(2)O_(3))platinum quantum dots are employed in photo,thermal,and photothermal catalytic dry reforming of *** experimental and computational results unveil different active sites(hot zones)on the two catalysts for photo,thermal,and photothermal *** hot zones of P-photothermal catalysis are identified to be the metal-support interface on Pt/P25 and the Pt surface on Pt/Al_(2)O_(3),***,a change of the active site to the Pt surface on Pt/P25 is for the first time observed in E-photothermal catalysis(external heating temperature of 700℃).The hot zones contribute to the significant enhancements in photothermal catalytic reactivity against *** study helps to understand the reaction mechanism of photothermal catalysis to exploit efficient catalysts for solar energy utilization and fossil fuels upgrading.

关键词： dry reforming of methane hot zones photothermal catalysis platinum-based catalysts

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Eliminating Hysteresis of Perovskite Solar Cells with Hollow CO_(2) Mesoporous Electron Transport Layer

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Chemical Research in Chinese Universities 2022年第1期38卷 117-122页

作者： HAN Wensheng WANG Yongling WAN Jiawei WANG Dan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-choKiryuGunma 376-8515Japan

Current density-voltage(J-V) hysteresis issue caused by unbalanced charge transport has greatly limited the improvement of power conversion efficiency(PCE) of halide perovskite solar cells(PSCs). Herein, hollow TiO2 mesoporous electron transport layer(ETL) was used to fabricate PSCs. The structure-dependent charge collection as well as its effect on PCE and hysteresis impactor(HI) of PSC were investigated. The results demonstrate that TiO2 hollow spheres in a size of around 50 nm (HS-50) can form a high quality perovskite/ETL interface with a less trap density. Moreover, the hollow TiO2 with the thin shell can help promote the extraction of electrons from perovskite layer to ETL, so as to reduce the charge accumulation and recombination at the perovskite/ETL interface and alleviate the hysteresis behavior. As a result, PSCs with HS-50 TiO2 delivered a champion PCE of 16.81% with a small HI of 0.0297, indicating a better performance than the commercial P25(PCE of 15.87%, HI of 0.2571).

关键词： Hollow structure Titanium dioxide Hysteresis Halide perovskite solar cell Charge collection

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