文献类型：期刊文献

英文题名：Interface Modification of TiO2 Nanotubes by Biomass-Derived Carbon Quantum Dots for Enhanced Photocatalytic Reduction of CO2

作者：Zhang, Jiayan[1];Xu, Jingjing[1];Tao, Feifei[1,2]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China

年份：2021

卷号：4

期号：11

起止页码：13120

外文期刊名：ACS APPLIED ENERGY MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000734173600004)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (NSFC, grant nos. 51372154 and 20901051), Project of Science Technology Department of Zhejiang Province of China (grant no. 2017C33209), and the Natural Science Foundation of Zhejiang Province (grant no. LY21B010005).

语种：英文

外文关键词：photocatalysis; semiconductors; heterostructure; TiO2 nanotubes; biomass-derived carbon quantum dots; CO2 reduction

外文摘要：As a greenhouse gas, the efficient conversion of carbon dioxide (CO2) into fuel by the photocatalytic technology is one of the feasible ways to promote sustainable energy development and achieve global energy demand. In this work, with special optical absorption and fluorescence emissions, biomass-derived carbon quantum dots (CQDs) are used to modify TiO2 nanotubes (NTs) for the enhancement of photocatalytic CO2 reduction. Monodisperse CQDs have a diameter of 2-5 nm and are loaded on TiO2 NTs, which are confirmed by various characterizations. Compared with TiO2 NTs, the as-prepared CQD-modified TiO2 NTs exhibit the significantly enhanced photocatalytic properties of CO2 reduction under irradiation. And the composite photocatalyst obtained by the combination of 10 mL of CQD solution with TiO2 NTs exhibits the highest CO2 photoreduction with the CO and CH4 yields of 13.55 and 3.54 mu mol center dot g(-1), which are 2.4 and 2.5 times that of TiO2 NTs, respectively. The higher CO2 photoreduction is ascribed to the introduction of CQDs into TiO2 NTs. Moreover, biomass-derived CQD-modified TiO2 NTs exhibit satisfactory stability for CO2 reduction. The encouraging photocatalytic performance for CO2 conversion exhibits that TiO2-based composites modified by carbon materials provide a feasible route to improve CO2 reduction utilizing abundant solar energy.