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Defect‐Rich Bi12O17Cl2 Nanotubes Self‐Accelerating Charge Separation for Boosting Photocatalytic CO2 Reduction
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-10-15 , DOI: 10.1002/anie.201809492 Jun Di 1, 2 , Chao Zhu 2 , Mengxia Ji 1 , Meilin Duan 3 , Ran Long 3 , Cheng Yan 2 , Kaizhi Gu 4 , Jun Xiong 1 , Yuanbin She 5 , Jiexiang Xia 1 , Huaming Li 1 , Zheng Liu 2
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-10-15 , DOI: 10.1002/anie.201809492 Jun Di 1, 2 , Chao Zhu 2 , Mengxia Ji 1 , Meilin Duan 3 , Ran Long 3 , Cheng Yan 2 , Kaizhi Gu 4 , Jun Xiong 1 , Yuanbin She 5 , Jiexiang Xia 1 , Huaming Li 1 , Zheng Liu 2
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Solar‐driven reduction of CO2, which converts inexhaustible solar energy into value‐added fuels, has been recognized as a promising sustainable energy conversion technology. However, the overall conversion efficiency is significantly limited by the inefficient charge separation and sluggish interfacial reaction dynamics, which resulted from a lack of sufficient active sites. Herein, Bi12O17Cl2 superfine nanotubes with a bilayer thickness of the tube wall are designed to achieve structural distortion for the creation of surface oxygen defects, thus accelerating the carrier migration and facilitating CO2 activation. Without cocatalyst and sacrificing reagent, Bi12O17Cl2 nanotubes deliver high selectivity CO evolution rate of 48.6 μmol g−1 h−1 in water (16.8 times than of bulk Bi12O17Cl2), while maintaining stability even after 12 h of testing. This paves the way to design efficient photocatalysts with collaborative optimizing charge separation and CO2 activation towards CO2 photoreduction.
中文翻译：
富含缺陷的Bi12O17Cl2纳米管自加速电荷分离，促进光催化还原CO2
太阳能驱动的CO 2还原将不可取的太阳能转化为增值燃料已被公认为是一种有前途的可持续能源转化技术。但是，由于缺乏足够的活性位点，导致效率低下的电荷分离和缓慢的界面反应动力学极大地限制了总的转化效率。在本文中，将具有管壁双层厚度的Bi 12 O 17 Cl 2超细纳米管设计为实现结构变形以产生表面氧缺陷，从而加速载流子迁移并促进CO 2活化。在没有助催化剂和牺牲剂的情况下，Bi 12 O 17Cl 2纳米管在水中具有48.6μmolg -1 h -1的高选择性CO释放速率（是整体Bi 12 O 17 Cl 2的16.8倍），同时即使在测试12 h后仍保持稳定性。这为通过协同优化电荷分离和将CO 2活化实现CO 2光还原而设计高效的光催化剂铺平了道路。
更新日期：2018-10-15
中文翻译：
富含缺陷的Bi12O17Cl2纳米管自加速电荷分离，促进光催化还原CO2
太阳能驱动的CO 2还原将不可取的太阳能转化为增值燃料已被公认为是一种有前途的可持续能源转化技术。但是，由于缺乏足够的活性位点，导致效率低下的电荷分离和缓慢的界面反应动力学极大地限制了总的转化效率。在本文中，将具有管壁双层厚度的Bi 12 O 17 Cl 2超细纳米管设计为实现结构变形以产生表面氧缺陷，从而加速载流子迁移并促进CO 2活化。在没有助催化剂和牺牲剂的情况下，Bi 12 O 17Cl 2纳米管在水中具有48.6μmolg -1 h -1的高选择性CO释放速率（是整体Bi 12 O 17 Cl 2的16.8倍），同时即使在测试12 h后仍保持稳定性。这为通过协同优化电荷分离和将CO 2活化实现CO 2光还原而设计高效的光催化剂铺平了道路。
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