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| 1 | Ultra-Thin Carbon-Doped Bi_(2)WO_(6) Nanosheets for Enhanced Photocatalytic CO_(2) Reduction显示文摘The photocatalytic reduction of CO_(2) is a promising strategy to generate chemical fuels.However,this reaction usually suf-fers from low photoactivity because of insuffi cient light absorption and rapid charge recombination.Defect engineering has become an eff ective approach to improve the photocatalytic activity.Herein,ultra-thin(~4.1 nm)carbon-doped Bi_(2)WO_(6) nanosheets were prepared via hydrothermal treatment followed by calcination.The ultra-thin nanosheet structure of the cata-lyst not only provides more active sites but also shortens the diff usion distance of charge carriers,thereby suppressing charge recombination.Moreover,carbon doping could successfully extend the light absorption range of the catalyst and remarkably promote charge separation,thus inhibiting recombination.As a result,the as-prepared Bi_(2)WO_(6) photocatalyst with ultra-thin nanosheet structure and carbon doping exhibits enhanced photocatalytic CO_(2) reduction performance,which is twice that of pristine ultra-thin Bi_(2)WO_(6) nanosheet.This study highlights the importance of defect engineering in photocatalytic energy conversion and provides new insights for fabricating effi cient photocatalysts. | Han Li Junchao Zhang Jiaguo Yu Shaowen Cao | 2021 | Transactions of Tianjin University2021，27，4： | 1 |
| 2 | CeO_(2) Particles Anchored to Ni_(2)P Nanoplate for Efficient Photocatalytic Hydrogen Evolution显示文摘Photocatalytic hydrogen evolution can convert intermittent and dispersive solar energy into hydrogen with high energy density,which is expected to fundamentally solve the problems of environmental pollution and energy shortages.In this experiment,the performance of the catalyst is modified by introducing cocatalyst and morphology control.Ni(OH)2 nanoflowers are used as substrates to derive nanoplate stack Ni_(2)P by high-temperature phosphating method,and a great many of CeO_(2) nanoparticles are anchored in the Ni_(2)P.This unique 3D/0D combination effectively inhibits the agglomeration of CeO_(2) nanoparticles and shortens the electron transfer path.Secondly,the introduction of metal-like performance of Ni_(2)P broadens the light absorption range of the catalyst and reduces the overpotential of the catalyst,which is a key factor in enhancing the catalytic activity.The design ideas of this experiment have reference significance for the design of efficient and environmentally friendly photocatalysts. | Teng Yan Xiaojie Zhang Hua Liu Zhiliang Jin | 2022 | Chinese Journal of Structural Chemistry2022，41，1： | 1 |
| 3 | An ultra-porous g-C_(3)N_(4) micro-tube coupled with MXene(Ti_(3)C_(2)TX)nanosheets for efficient degradation of organics under natural sunlight显示文摘It remains as a challenge for realizing efficient photo-responsive catalysts towards largescale degradation of organic pollutants under natural sunlight.This work reports a new pore engineering strategy for creating ultra-porous g-C_(3)N_(4) micro-tubes with an unprecedentedly high specific surface area of 152.96 m^(2)/g.This is mainly associated with releasing internal vapor pressure in the autoclave where the hydrothermal treatment of the urea/melamine mixture is processed.Supported by microscopic observation,porosity measurement and spectroscopic characterization,it is found that releasing the pressure at halfway of hydrothermal process is vital for forming exfoliated rod-like precursors and the de-aggregation of these rods presents substantial benefits on the production of mesopores on g-C_(3)N_(4) microtubes during the calcination of precursors.This offers a large number of reactive sites required by photocatalytic reaction.Coupling these micro-tubes with Ti_(3)C_(2)T_(X) nanosheets via electrostatic interaction yields a 1D/2D heterojunction with a close interfacial contact.The addition of metallically conductive Ti_(3)C_(2)T_(X) nanosheets accelerates the separation between electrons and holes,and also enhances the light absorption.All these merits of structural design lead to forming a group of highly efficient catalysts demonstrating an excellent photocatalytic degradation rate of k=0.0560 min^(-1)for RhB dyes under 100 mW/cm~2 visible light radiation that micks sunlight outdoors.This laboratory valuation is further supported by an outdoor test that shows a fast degradation rate of 0.0744 min^(-1)under natural sunlight. | Zongyang Ya Qiyou Wang Jingjin Cai Peng Wang Xinyu Jiang Zhiyin Cai Shanglin Xiang Tingwei Wang Dongyu Cai | 2024 | Journal of Environmental Sciences2024，，3： | 0 |
| 4 | 二次煅烧g-C_(3)N_(4)超声催化降解亚甲基蓝显示文摘通过对g-C_(3)N_(4)进行二次煅烧,制备了二次煅烧g-C_(3)N_(4),并将其加入亚甲基蓝水溶液中进行超声催化,研究它的声催化降解性能。在利用X射线衍射、红外光谱、扫描电镜等对二次煅烧g-C_(3)N_(4)进行表征基础上,研究催化剂种类、催化剂用量对声催化性能的影响。实验结果表明:与原始g-C_(3)N_(4)相比较,二次煅烧g-C_(3)N_(4)的片层状结构变薄,在较高波长范围内光响应增加,基于此,二次煅烧g-C_(3)N_(4)的声催化降解性能要优于原始g-C_(3)N_(4),其中,当二次煅烧温度在625℃时,样品的声催化降解性能最好,并且在同一时间内,随着它质量的增加,声催化降解效率也会增加,此外,二次煅烧g-C_(3)N_(4)还具有优良的循环稳定性。 | 于清波 任欣欣 潘佳 杨宽 李慧琴 曾颖 | 2021 | 青岛科技大学学报(自然科学版)2021，42，4： | 0 |
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