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BiVO4 Microplates with Oxygen Vacancies Decorated with Metallic Cu and Bi Nanoparticles for CO2 Photoreduction
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-03-30 , DOI: 10.1021/acsanm.1c00115 Lin Huang 1 , Zeyu Duan 1 , Yingying Song 1 , Qingsen Li 1 , Limiao Chen 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-03-30 , DOI: 10.1021/acsanm.1c00115 Lin Huang 1 , Zeyu Duan 1 , Yingying Song 1 , Qingsen Li 1 , Limiao Chen 1
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BiVO4-based composites are of great interest as photocatalysts for water oxidation, CO2 reduction, and organic pollutant degradation, but their low charge separation efficiency and poor photocatalytic activity still need to be resolved. Herein, metallic Cu and Bi nanoparticle-co-decorated BiVO4 (Cu–Bi/BiVO4) microplates were constructed via a simple solvothermal method, and their photocatalytic activity was evaluated by photocatalytic CO2 reduction with H2O vapor. The obtained results demonstrated that the Cu–Bi/BiVO4 composites exhibited high visible-light absorption ability, a narrow band gap, rich surface oxygen vacancies, efficient charge separation, and fast charge transportation. These unique characteristics enable the Cu–Bi/BiVO4 composites to perform excellent photocatalytic activity for CO2 reduction into CO/CH4 under visible-light illumination. The CO production rate of optimized Cu–Bi/BiVO4 is about 19- and 4-fold higher than those of pristine BiVO4 and Bi/BiVO4 composites, respectively. The present work demonstrated that metallic Cu and Bi nanoparticle-co-decorated BiVO4 microplates exhibited promising application in photocatalytic CO2 reduction into valuable chemical fuels.
中文翻译：
具有金属和铜纳米粒子修饰的氧空位的BiVO 4微孔板，用于CO 2光还原
基于BiVO 4的复合材料作为用于水氧化，CO 2还原和有机污染物降解的光催化剂备受关注，但它们的电荷分离效率低和光催化活性差仍需要解决。本文中，通过简单的溶剂热法构建了金属铜和Bi纳米粒子共修饰的BiVO 4（Cu–Bi / BiVO 4）微孔板，并通过H 2 O蒸气光催化还原CO 2对其光催化活性进行了评估。获得的结果表明，Cu–Bi / BiVO 4复合材料显示出高的可见光吸收能力，窄的带隙，丰富的表面氧空位，有效的电荷分离和快速的电荷传输。这些独特的特性使Cu–Bi / BiVO 4复合材料在可见光照射下具有出色的光催化活性，可将CO 2还原为CO / CH 4。优化的Cu–Bi / BiVO 4的CO生产率分别比原始BiVO 4和Bi / BiVO 4复合材料的CO生产率分别高19倍和4倍左右。目前的工作表明金属铜和Bi纳米粒子共修饰的BiVO 4微孔板在光催化CO 2中显示出有希望的应用 还原成有价值的化学燃料。
更新日期：2021-04-23
中文翻译：
具有金属和铜纳米粒子修饰的氧空位的BiVO 4微孔板，用于CO 2光还原
基于BiVO 4的复合材料作为用于水氧化，CO 2还原和有机污染物降解的光催化剂备受关注，但它们的电荷分离效率低和光催化活性差仍需要解决。本文中，通过简单的溶剂热法构建了金属铜和Bi纳米粒子共修饰的BiVO 4（Cu–Bi / BiVO 4）微孔板，并通过H 2 O蒸气光催化还原CO 2对其光催化活性进行了评估。获得的结果表明，Cu–Bi / BiVO 4复合材料显示出高的可见光吸收能力，窄的带隙，丰富的表面氧空位，有效的电荷分离和快速的电荷传输。这些独特的特性使Cu–Bi / BiVO 4复合材料在可见光照射下具有出色的光催化活性，可将CO 2还原为CO / CH 4。优化的Cu–Bi / BiVO 4的CO生产率分别比原始BiVO 4和Bi / BiVO 4复合材料的CO生产率分别高19倍和4倍左右。目前的工作表明金属铜和Bi纳米粒子共修饰的BiVO 4微孔板在光催化CO 2中显示出有希望的应用 还原成有价值的化学燃料。
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