文献类型：期刊文献

英文题名：Promoting the photocatalytic conversion of carbon dioxide to methanol on molybdenum dioxide using sodium species

作者：Wang, Zekun[1];Chen, Zhi[2];Huang, Kai[3];Lu, Chengyu[2];Wang, Chunli[2];Ma, Yuting[2];Chen, Jianjun[4];Liu, Yishan[5];Wang, Jiemin[6];Mi, Jinxing[4];Zhang, Liangzhu[2]

机构：[1]Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Taizhou Univ, Sch Pharmaceut & Chem Engn, Taizhou 318000, Zhejiang, Peoples R China;[4]Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100084, Peoples R China;[5]Sichuan Univ, Coll Math, Chengdu 610064, Peoples R China;[6]Sichuan Univ, Coll Biomed Engn, Chengdu 610064, Peoples R China

年份：2025

卷号：13

期号：14

起止页码：7198

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20251018013991);WOS:【SCI-EXPANDED(收录号:WOS:001435797800001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grants 22209176, 52103178, 52300133, 22308095), the China Postdoctoral Science Foundation (2021M703145, 2022M720049), the Shanghai Pujiang Talent Plan project (23PJ1402000) and the Beijing National Laboratory for Condensed Matter Physics (2024BNLCMPKF017). Mr. Zekun Wang and Mr. Zhi Chen contributed equally to this work and should be considered as co-first authors.

语种：英文

外文关键词：Activation energy - Catalyst selectivity - Fourier transform infrared spectroscopy - Molybdenum oxide - Photocatalysts - Photocatalytic activity - Photosynthesis

摘要：Mimicking natural photosynthesis to convert CO2 into small energy molecules (e.g., CH4 and CH3OH) is of great significance for carbon neutralization. However, achieving catalytic reactions with high selectivity in the absence of sacrificial reagents or extra photosensitizers remains a huge challenge. Here, we demonstrated that sodium species on MoO2 (Na/MoO2) can act as an effective photocatalyst for selectively converting CO2 into CH3OH under visible light irradiation. Na/MoO2 showed good catalytic activity, exhibiting a rate of 82.7 mu mol h-1 g-1 of CH3OH formation in a 16-h reaction with 79.4% selectivity to CH3OH compared to CO evolution when 10 mg of the catalyst was applied. The catalytic activity and selectivity of Na/MoO2 are much higher than those of pure MoO2, which only showed 3.5 mol h-1 g-1 of CH3OH formation in a 1-h reaction with 39.7% selectivity to CO, without the need for a sacrificing agent or photosensitizer. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and theoretical calculations explained that the Na atom on the (100) crystal plane could lower the CO2 activation energy barrier by reducing the reaction energy of the rate-determining path from COOH* to COH2* from 1.47 eV to 0.75 eV. Therefore, this work provides a novel view for promoting the activity of photocatalysts by introducing alkaline metal species onto metal oxides.