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| 1 | Recent progress on precious metal single atom materials for water splitting catalysis显示文摘Electrochemical water splitting for hydrogen production has sparked intensive interests because it provides a new approach for sustainable energy resources and the avoidance of environmental problems.The precious metal-based sin-gle atomic catalysts(PMSACs)have been widely employed in water splitting catalysis by virtue of their maximum atom utilization and unique electronic structure,which can reduce metal amounts and remain high catalytic perfor-mance simultaneously.In this review,we will summarize recent research efforts toward developing SACs based on precious metals with excellent performance for electrochemical water splitting catalysis.First,the synthesis strategies for PMSACs will be classified and introduced including high-temperature pyrolysis,electrochemical method,photochemical reduction,wet chemistry method,etc.Then,a short description of characterization techniques for SACs will be given,which mainly involves the aberration-corrected scanning-transmission electron microscopy(AC-STEM)and X-ray absorption spectroscopy(XAS).In particular,the relationship between the electronic structure of the precious metal atomic sites and performance for water splitting will be discussed according to the the-oretical and experimental results.Finally,a brief perspective will be provided to highlight the challenges and opportunities for the development of novel PMSACs suitable for electrochemical water splitting applications. | Lei Zhou Shi-Yu Lu Shaojun Guo | 2021 | SusMat2021，1，2： | 6 |
| 2 | Vacancy defect engineering in semiconductors for solar light‐driven environmental remediation and sustainable energy production显示文摘The introduction of vacancy defects in semiconductors has been proven to be a highly effective approach to improve their photocatalytic activity owing to their advantages of promoting light absorption,facilitating photogenerated carrier separation,optimizing electronic structure,and enabling the production of reactive radicals.Herein,we outline the state-of-the-art vacancy-engineered photocatalysts in various applications and reveal how the vacancies influence photocatalytic performance.Specifically,the types of vacancy defects,the methods for tailoring vacancies,the advanced characteri-zation techniques,the categories of photocatalysts with vacancy defects,and the corresponding photocatalytic behaviors are presented.Meanwhile,the methods of vacancies creation and the related photocatalytic performance are correlated,which can be very useful to guide the readers to quickly obtain in-depth knowledge and to have a good idea about the selection of defect engineering methods.The precise characterization of vacancy defects is highly challenging.This review describes the accurate use of a series of characterization techniques with detailed comments and suggestions.This represents the uniqueness of this comprehensive review.The challenges and development prospects in engineering photocatalysts with vacancy defects for practical applications are discussed to provide a promising research direction in this field. | Yang Ding Soumyajit Maitra Chunhua Wang Somoprova Halder Runtian Zheng Tarek Barakat Subhasis Roy Li-Hua Chen Bao-Lian Su | 2022 | Interdisciplinary Materials2022，1，2： | 0 |
| 3 | 同时构建高结晶氮化碳同型异质结并构筑单原子活性位点促进光催化制氢性能显示文摘石墨相氮化碳类光催化剂在光催化制氢应用中展示了巨大潜力.本文提出了一种同时构建高结晶氮化碳同型异质结并构筑单原子活性位点的策略.研究发现在离子热合成中加入钻盐,能促进庚嗪基结晶氮化碳(CCN)向三嗪基结晶氮化碳(PTI)的相变,同时,钴盐可作为单原子钴活性位点的金属源.该Co-CCN/PTI光催化剂在425 nm处达到了20.88%的表观量子效率,在可见光波段(λ>420 nm)达到了3538 Nmol h^(-1)g^(-1)的制氢速率,该速率分别比CCN高4.8倍,比PTI高27.6倍.分析结果表明,CCN/PTI之问的TypeⅡ同型异质结可有效促进电荷分离,Co单原子活性位点可加速表面氧化反应,这两方面因素同时促进光催化制氢性能的提高. | 沈少华 陈杰 王亦清 董崇礼 孟繁琦 张庆华 皇甫亦亮 林治 黄裕呈 李燕瑞 李明涛 谷林 | 2022 | Science Bulletin2022，67，5： | 0 |
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