Hijacking the hydrogen atoms in photo-splitting of H2O2 for efficient reduction of CO2 to CH3OH

被引：4

作者：

Kularkar, Ankush ^{[1
,2
]}

Chaudhari, Sachin ^{[1
]}

Pola, Someshwar ^{[3
]}

Rayalu, Sadhana S. ^{[1
]}

Chan, Sunney I. ^{[1
,4
]}

Nagababu, Penumaka ^{[1
,2
]}

机构：

[1] CSIR Natl Environm Engn Res Inst NEERI, Environm Mat Div EMD, Nagpur 440020, India

[2] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, Uttar Pradesh, India

[3] Osmania Univ, Dept Chem, Hyderabad 500007, India

[4] Acad Sinica, Inst Chem, Taipei 11529, Taiwan

来源：

FUEL | 2023年 / 349卷

关键词：

Metal-organic frameworks; Photocatalysis; Carbon dioxide fixation; Conversion ofCO2 intoCH3OH; METAL-ORGANIC FRAMEWORKS; ELECTROCATALYTIC REDUCTION; PHOTOCATALYTIC REDUCTION;

D O I：

10.1016/j.fuel.2023.128716

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Photo-splitting of H2O2 in visible light is achieved by Cu-MOFs of Cu nodes and 1, 3, 5-benzene tricarboxylic acid (BTC) organic linkers (CuM) decorated with CdS (C) at varying concentrations of CdS in the CuMC composite. This process produces abundant nascent hydrogen atoms to promote the efficient catalytic reduction of CO2 to methanol (CH3OH) in visible light. The slow rate of recombination of the nascent hydrogen atoms produced by the H2O2 photo-splitting on the surface of the CdS quantum dots ensures a high steady-state concentration of hydrogen atoms with significantly reduced production of the less reactive hydrogen gas. With slow recombi-nation of the photo-generated charges and the large surface areas for CO2 adsorption by the MOF, one of the CuMC composites is capable of converting CO2 into CH3OH with a quantum efficiency approaching 80 %. A mechanism for the selective conversion of CO2 into CH3OH is proposed.

引用

页数：11

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