当前位置: X-MOL 学术ChemSusChem › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Coupling CsPbBr3 Quantum Dots with Covalent Triazine Frameworks for Visible‐Light‐Driven CO2 Reduction
ChemSusChem ( IF 7.5 ) Pub Date : 2021-01-07 , DOI: 10.1002/cssc.202002847
Qi Wang 1 , Jin Wang 1 , Ji‐Chong Wang 1 , Xin Hu 1 , Yu Bai 2 , Xinhua Zhong 3 , Zhengquan Li 1
Affiliation  

Photocatalytic reduction of CO2 into value‐added chemical fuels is an appealing approach to address energy crisis and global warming. CsPbBr3 quantum dots (QDs) are good candidates for CO2 reduction because of their excellent photoelectric properties, including high molar extinction coefficient, low exciton binding energy, and defect tolerance. However, the pristine CsPbBr3 QDs generally have low photocatalytic performance mainly due to dominant charge recombination and lack of efficient catalytic sites for CO2 adsorption/activation. Herein, we report a new photocatalytic system, in which CsPbBr3 QDs are coupled with covalent triazine frameworks (CTFs) for visible‐light‐driven CO2 reduction. In this hybrid photocatalytic system, the robust triazine rings and periodical pore structures of CTFs promote the charge separation in CsPbBr3 and endow them with strong CO2 adsorption/activation capacity. The resulting photocatalytic system exhibits excellent photocatalytic activity towards CO2 reduction. This work presents a new photocatalytic system based on CTFs and perovskite QDs for visible‐light‐driven CO2 reduction, which highlights the potential of perovskite‐based photocatalysts for solar fuel applications.

中文翻译:

将CsPbBr3量子点与共价三嗪框架偶联以减少可见光驱动的CO2排放

将CO 2光催化还原为增值化学燃料是解决能源危机和全球变暖的一种有吸引力的方法。CsPbBr 3量子点(QDs)具有出色的光电特性,包括高摩尔消光系数,低激子结合能和缺陷耐受性,是减少CO 2的良好候选者。然而,原始的CsPbBr 3 QD通常具有低的光催化性能,这主要是由于主要的电荷重组和缺乏有效的CO 2吸附/活化催化位点。在此,我们报告了一种新的光催化系统,其中CsPbBr 3 QD与共价三嗪骨架(CTF)耦合用于可见光驱动的CO2减少。在这种混合光催化系统中,坚固的三嗪环和CTF的周期性孔结构促进CsPbBr 3中的电荷分离,并使它们具有强大的CO 2吸附/活化能力。所得的光催化体系表现出优异的对CO 2还原的光催化活性。这项工作提出了一种基于CTF和钙钛矿QD的新型光催化系统,用于减少可见光驱动的CO 2排放,突显了钙钛矿基光催化剂在太阳能燃料应用中的潜力。
更新日期:2021-02-18
down
wechat
bug