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Sm and S Co-doping to Construct Homo-hetero Cu Catalysts for Synergistic Enhancing CO_(2) Electroreduction

Chinese Journal of Chemistry 2023年第12期41卷 1443-1449页

作者： Jiyuan Liu Pengsong Li Jiahui Bi Yong Wang Qinggong Zhu Xiaofu Sun Jianling Zhang Zhimin Liu Buxing Han Beijing National Laboratory for Molecular Sciences CAS Laboratory of Colloid and Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China

Copper(Cu)is recognized as one of the most efficient metal catalysts that can perform the electrocatalytic CO_(2) reduction reaction(CO_(2)RR)and its surface oxidation state determines the reaction *** Cuδ+(0<δ<1)species,are well known active sites in CO_(2)RR to produce hydrocarbons and ***,Cuδ+active sites are difficult to control,and it is very easy to be reduced to Cu^(0) under CO_(2)RR operating ***,we report a homo-hetero doping strategy to construct an efficient samarium(Sm)and sulfur(S)co-doping catalyst(Smx-CuSy)for CO_(2)RR to formic acid(HCOOH).At optimum conditions,Smx-CuSy delivered a high HCOOH Faradaic efficiency(FE)of 92.1%at the current density of 300 mA·cm^(–2) using 1 mol/L KOH aqueous solution as electrolyte,and the reduction potential was as low as–0.52 V *** hydrogen electrode(RHE).The co-doping of Sm and S resulted in excellent CO_(2)RR performance owing to the synergistic effect of the homo-hetero *** homo-doping of S could effectively adjust the electronic structure of Cu in favor of the formation of abundant Cu^(δ+)*** existence of hetero-Sm species could not only stabilize the Cu^(δ+)sites,but also increase the concentration of H ions to form a favorable catalytic environment for HCOOH generation.

关键词： Carbon dioxide Electrochemistry Lanthanides Homo-hetero doping Copper

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Three‑Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine Zinc Oxide Nanoparticles for Enhanced Microwave Absorption Properties

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Nano-Micro Letters 2021年第5期13卷 61-76页

作者： Yan Song Fuxing Yin Chengwei Zhang Weibing Guo Liying Han Ye Yuan School of Materials Science and Engineering Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologyHebei University of TechnologyTianjin 300130People’s Republic of China

Currently,electromagnetic radiation and interference have a significant effect on the operation of electronic devices and human health ***,developing excellent microwave absorbers have a huge significance in the material research ***,a kind of ultrafine zinc oxide(ZnO)nanoparticles(NPs)supported on three-dimensional(3D)ordered mesoporous carbon spheres(ZnO/OMCS)is prepared from silica inverse opal by using phenolic resol precursor as carbon *** prepared lightweight ZnO/OMCS nanocomposites exhibit 3D ordered carbon sphere array and highly dispersed ultrafine ZnO NPs on the mesoporous cell walls of carbon ***/OMCS-30 shows microwave absorbing ability with a strong absorption(−39.3 dB at 10.4 GHz with a small thickness of 2 mm)and a broad effective absorption bandwidth(9.1 GHz).The outstanding microwave absorbing ability benefits to the well-dispersed ultrafine ZnO NPs and the 3D ordered mesoporous carbon spheres *** work opened up a unique way for developing lightweight and high-efficient carbon-based microwave absorbing materials.

关键词： Three-dimensional ordered structure Mesoporous carbon spheres Zinc oxide nanoparticles Microwave absorption

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超亲水纳孔分离膜的制备及其分子分离性能和稳定性研究

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science China Materials 2024年第8期67卷 2477-2485页

作者：赵璐张丰高守建靳健 College of Chemistry Chemical Engineering and Materials ScienceCollaborative Innovation Center of Suzhou Nano Science and TechnologySuzhou Key Laboratory of Macromolecular Design and Precision SynthesisJiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123China i-Lab CAS Key Laboratory of Nano-Bio InterfaceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

膜分离技术在有机分子污水的处理中具有广泛应用,其面临的难题之一是制备具有超亲水性质的纳孔膜以抵御有机污染物的污染,实现高效、稳定的分子分离.在本文中,我们通过全膜交联的方法在保持水凝胶纳孔膜超亲水性质的前提下大幅提升了其... 详细信息

膜分离技术在有机分子污水的处理中具有广泛应用,其面临的难题之一是制备具有超亲水性质的纳孔膜以抵御有机污染物的污染,实现高效、稳定的分子分离.在本文中,我们通过全膜交联的方法在保持水凝胶纳孔膜超亲水性质的前提下大幅提升了其机械强度,制备了高强度超亲水纳孔膜.该膜实现了有机分子的高效分离,水通量达到220 L m^(-2)h^(-1)bar^(-1),考马斯亮蓝(CBB)截留率达到~99.9%,分子/盐(CBB/Na_(2)SO_(4))选择性达到747.在以腐殖酸为污染物的分子分离中,该膜表现出优异的抗污染性能,通量恢复率接近100%.该膜还具有出色的抗压性能,在高达8 bar的跨膜压力下保持了稳定的分子分离性能.本工作为制备超亲水纳孔膜实现有机分子废水的高效分离提供了一种新的思路.

关键词：超亲水跨膜压力抗污染性能分离性能膜分离技术高效分离抗压性能孔膜

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Development of yellow-light TiO2 integrated photonics

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Optics Letters 2025年第11期50卷 3489-3492页

作者： Chen, Zequn Tang, Yiheng Wei, Maoliang Li, Xiaojing Sun, Boshu Wu, Yingchun Zou, Sishuo Huang, Ji Si, Ke Gong, Wei Lin, Hongtao Li, Lan Institute of Advanced Technology Westlake Institute for Advanced Study Hangzhou310024 China Zhejiang Key Laboratory of 3D Micro Nano Fabrication and Characterization School of Engineering Westlake University Hangzhou310030 China The State Key Lab of Brain-Machine Intelligence College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China MOE Frontier Science Center for Brain Science & Brain-Machine Integration Zhejiang University Hangzhou310027 China Nanhu Brain-Computer Interface Institute Hangzhou311100 China College of Optical Science and Engineering Zhejiang University Hangzhou310027 China Westlake Institute for Optoelectronics Fuyang Zhejiang Hangzhou311421 China

Visible-light photonic integrated circuits (PICs) are rapidly emerging as a crucial technology to overcome the scaling challenges in quantum information processing and biosensing. Titanium dioxide (TiO2), with its high transparency in the visible range, is regarded as a promising material for facilitating the development of high-performance visible-light integrated systems. In this paper, we introduce a series of passive TiO2 integrated devices, which include waveguides, multimode interferometers (MMIs), and thermo-optic switches (TOSs), monolithically integrated for the first time to our knowledge at a working wavelength of 589 nm. A propagation loss of 5.46 ± 0.17 dB/cm demonstrates a significant improvement over previous reports on yellow-light TiO2 waveguides. This study marks the first fabrication of a TOS operating at 589 nm, featuring a TiO2 core and polymer cladding. Notably, it achieves a power consumption (Pπ) of 8.24 mW, which represents a threefold reduction compared to silicon nitride-based TOSs operating in the visible spectrum. These results offer new insight into the design and fabrication of visible waveguide-integrated devices, paving the way for future emerging applications, such as quantum information, sensors, and biomedical science. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Titanium dioxide

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In situ/operando characterization techniques for electrochemical CO_(2)reduction

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science China Chemistry 2023年第2期66卷 315-323页

作者： Xinning Song Liang Xu Xiaofu Sun Buxing Han Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China College of Science China Agricultural UniversityBeijing100193China School of Chemical Sciences University of Chinese Academy of SciencesBeijing100049China Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200062China

Utilizing CO_(2)as a carbon feedstock for producing fuels and useful chemicals is attractive due to the advantages of being abundant,nontoxic,and *** CO_(2)reduction(CO_(2)RR)provides an avenue to close the anthropogenic carbon ***,the reaction process of multi-electronic products of CO_(2)RR is quite *** is hard to yield a target product with high selectivity,high current density,low overpotential,and good stability *** recent years,in situ/operando characterization techniques have played important roles in the catalysis field via establishing the structure-reactivity/selectivity relationships of catalysts and thereby obtaining information about *** a result,it is necessary to apply in situ/operando characterization technologies to clarify the reaction pathway of CO_(2)*** this mini-review,we discuss recent progress on the in situ/operando characterizations for electrochemical CO_(2)RR,including microscopies,infrared spectroscopy,Raman spectroscopy,X-ray photoelectron spectroscopy,and X-ray absorption fine ***,the capabilities of these in situ/operando characterizations and the remaining challenges are also discussed.

关键词： carbon dioxide electrocatalysis in situ/operando characterization catalyst design reaction mechanism

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Enhanced Q-switching performance of magnetite nanoparticle via compositional engineering with Ti_(3)C_(2) MXene in the near infrared region

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Journal of Materials science & Technology 2021年第22期81卷 51-57页

作者： Yutao Hu Hongwei Chu Daozhi Li Ying Li Shengzhi Zhao Li Dong Dechun Li School of Information Science and Engineering Shandong UniversityQingdao266237China Key Laboratory of Colloid and Interface Chemistry Ministry of Educationand School of Chemistry and Chemical EngineeringShandong UniversityJinan250100China

In this work,we reported a new strategy to improve the nonlinear saturable absorption performance of magnetite(Fe_(3)O_(4))nanoparticles(FONPs)via the compositional engineering with the Ti_(3)C_(2) MXene in the near-infrared(NIR)*** on the DFT simulation,the band structures and work function were significantly modified by the Ti_(3)C_(2) MXene *** using the open-aperture Z-scan technology,the nonlinear optical features of the FONPs@Ti_(3)C_(2) nanocomposite were significantly improved,showing the great potential as the saturable absorber in the pulsed *** the nanocomposite as the saturable absorber,the passively Q-switched Nd:GdVO4 lasers emitted much shorter pulse durations when compared with the pristine FONP saturable *** findings indicated that FONPs@Ti_(3)C_(2) heterostructure was a promising saturable absorber for the short pulse generation in the NIR region.

关键词： Fe_(3)O_(4)nanoparticle Ti_(3)C_(2)Mxene Heterostructure Saturable absorber Q-switching

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Component leaching of water oxidation electrocatalysts

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InfoMat 2024年第11期6卷 1-30页

作者： Gao Chen Yanping Zhu Sixuan She Zezhou Lin Hainan Sun Haitao Huang Jiangsu Key Laboratory of New Energy Devices and Interface Science(Nanjing University of Information Science and Technology) School of Chemistry and Materials ScienceNanjing University of Information Science and TechnologyNanjingthe People's Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjingthe People's Republic of China Department of Applied Physics and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong Kongthe People's Republic of China School of Chemistry and Chemical Engineering Nantong UniversityNantongthe People's Republic of China

Most electrocatalysts are known to experience structural change during the oxygen evolution reaction(OER)*** endeavors have been dedicated thus far to comprehending the catalytic process and uncovering the underlying *** the dynamic evolution of catalyst structure,component leaching of electrocatalysts is the most common *** article offers a concise overview of recent findings and developments related to the leaching phenomena in the OER process in terms of fundamental understanding of leaching,advanced characterization techniques used to investigate leaching,leaching of inactive components,and leaching of active *** behaviors and the induced effects in various kinds of OER catalysts are discussed,progress in manipulating leaching amount/degree toward a tunable surface evolution is spotlighted,and finally,three representative types of structure transformations induced by leaching metastable species in OER condition are *** understanding the process of component leaching in the OER,it will provide more guidance for the rational design of superior electrocatalysts.

关键词： leaching oxygen evolution reaction reconstruction water oxidation

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Injectable Hyaluronic Acid/Poly(y-glutamic acid)Hydrogel with Step-by-step Tunable Properties for Soft Tissue engineering

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Chinese Journal of Polymer science 2021年第8期39卷 957-965,I0005页

作者： Xue-Bin Ma Rong Yang Kanaparedu P.C.Sekhar Bo Chi Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China State Key Laboratory of Materials-Oriented Chemical Engineering College of Food Science and Light IndustryNanjing Tech UniversityNanjing 211816China

Injectable hydrogels as an important class of biomaterials have gained much attention in tissue ***,their crosslinking degree is difficult to be controlled after being injected into *** we all know,the crosslinking degree strongly influences the physicochemical properties of ***,developing an injectable hydrogel with tunable crosslinking degree in vivo is important for tissue ***,we present a dual crosslinking strategy to prepare injectable hydrogels with step-by-step tunable crosslinking degree using Schiff base reaction and *** developed hyaluronic acid/poly(y-glutamic acid)(HA/y-PGA)hydrogels exhibit step-by-step tunable swelling behavior,enzymatic degradation behavior and mechanical *** performance tests show that the storage moduli of HA/y-PGA hydrogels are all less than 2000 Pa and the compressive moduli are in kilopascal,which have a good match with soft *** addition,NIH 3T3 cells encapsulated in HA/y-PGA hydrogel exhibit a high cell viability,indicating a good cytocompatibility of HA/y-PGA ***,the developed HA/y-PGA hydrogel as an injectable biomaterial has a good potential in soft tissue engineering.

关键词： Hyaluronic acid Poly(y-glutamic acid) Injectable hydrogel Tissue engineering

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Modulating reaction pathways of formic acid oxidation for optimized electrocatalytic performance of PtAu/CoNC

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Nano Research 2022年第2期15卷 1221-1229页

作者： Mengchao Liang Tianyu Xia Han Gao Kai Zhao Tianqi Cao Meng Deng Xiaoyan Ren Shunfang Li Haizhong Guo Rongming Wang Key Laboratory of Material Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinanShandong 250358China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China

Formic acid oxidation(FAO)is a typical anode reaction in fuel cells that can be facilitated by modulating its direct and indirect reaction ***,PtAu bimetallic nanoparticles loaded onto Co and N co-doping carbon nanoframes(CoNC NFs)were designed to improve the selectivity of the direct reaction pathway for efficient *** on these subtle nanomaterials,the influences of elemental composition and carbon-support materials on the two pathways of FAO were investigated in *** results of fuel cell tests verified that the appropriate amount of Au in PtAu/CoNC can promote a direct reaction pathway for FAO,which is crucial for enhancing the oxidation efficiency of formic *** particular,the obtained PtAu/CoNC with an optimal Pt/Au atomic ratio of 1:1(PtAu/CoNC-3)manifests the best catalytic performance among the analogous obtained Pt-based *** FAO mass activity of the PtAu/CoNC-3 sample reached 0.88 A·mg_(Pt)^(-1),which is 26.0 times higher than that of Pt/*** results of first-principles calculation and CO stripping jointly demonstrate that the CO adsorption of PtAu/CoNC is considerably lower than that of Pt/CoNC and PtAu/C,which indicates that the synergistic effect of Pt,Au,and CoNC NFs is critical for the resistance of Pt to CO *** work is of great significance for a deeper understanding of the oxidation mechanism of formic acid and provides a feasible and promising strategy for enhancing the catalytic performance of the catalyst by improving the direct reaction pathway for FAO.

关键词： formic acid oxidation direct oxidation pathway metal organic framework co-doping CO binding energy

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Multi-domain feature fusion for target color decoding from multichannel neural recordings of pigeons

Multi-domain feature fusion for target color decoding from m...

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2023 International Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2023

作者： Li, Hongxun Liu, Ruiqing Niu, Xiaoke Wang, Zhizhong Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology School of Electrical Engineering Zhengzhou University Zhengzhou450001 China Department of Mechanical and Electrical Engineering Henan Light Industry Vocational College Zhengzhou450000 China

ISBN: (纸本)9781510666351

The entopallium is a high-level neural structure of the avian visual system that is related to the processing of color- and shape-related information during target recognition. The mechanism underlying it remains unclear and has drawn a considerable amount of research interest. Decoding has invariably been used in relevant studies to verify whether the extracted response-related features contain visual information. However, local field potentials (LFPs) often contain rich features. In this study, We combine the features of different domains to decode color information, including those in the time and frequency domains as well as features related to non-linear and functional network connectivity. To extract valuable response-related features, three types of feature selection methods are compared. The LFP data from the entopallium of a pigeon were recorded during periods of stimulus presentation in which two colors were randomly presented in each trial. The selected feature set was finally used to decode the colors by using several general classifiers. The results showed that the fusion of multi-domain features helped improve decoding performance, and the optimal feature set was a fusion of multiple domains of features. These results improve our understanding of the avian neural mechanisms involved in encoding color-related information. © 2023 SPIE.

关键词： Color

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