A selective Au-ZnO/TiO2 hybrid photocatalyst for oxidative coupling of methane to ethane with dioxygen

Song, Shuang; Song, Hui; Li, Luming; Wang, Shengyao; Chu, Wei; Peng, Kang; Meng, Xianguang; Wang, Qi; Deng, Bowen; Liu, Qianxia; Wang, Zhuan; Weng, Yuxiang; Hu, Huilin; Lin, Huiwen; Kako, Tetsuya; Ye, Jinhua

doi:10.1038/s41929-021-00708-9

Cited by 177 publications

(197 citation statements)

References 49 publications

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“…Recently, the report of an exquisite catalyst design work through the hybrid roles of Au-ZnO/TiO 2 indicates a breakthrough performance over C 2 H 6 formation from CH 4 by O 2 . 105 The hybrid photocatalyst integrates the functions of the enhanced photocatalytic activation by ZnO/ TiO 2 , the weak overoxidation ability of ZnO, and promoting CH 3 desorption by the Au co-catalyst, which is responsible for the high activity and selectivity.…”

Section: Solar-driven Ch 4 Coupling To C 2+mentioning

confidence: 99%

Toward solar-driven carbon recycling

Lin

Luo

Zhang

et al. 2022

Joule

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154

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Section: Solar-driven Ch 4 Coupling To C 2+mentioning

confidence: 99%

Toward solar-driven carbon recycling

Lin

Luo

Zhang

et al. 2022

Joule

Self Cite

154

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“…Very recently, Au loaded ZnO/TiO 2 hybrid is reported for photocatalytic oxidation of methane to ethane with O 2 in a flow reactor, and the ethane production rate could reach 5000 μmol·g −1 ·h −1 . [ 64 ] The formation of heterojunctions between ZnO and TiO 2 leads to an increase in photocatalytic activity, while maintaining the weak overoxidation ability as ZnO.…”

Section: Photocatalytic Methane C—c Couplingmentioning

confidence: 99%

Advances and Challenges of Photocatalytic Methane C—C Coupling

2022

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Comprehensive Summary Methane, the main component of natural gas and shale gas, can be converted to upgraded fuels, syngas and value‐added chemicals. Due to the nonpolar character of methane and large bond dissociation energy of sp3 C—H bond, methane conversion requires strong oxidants or acids/bases for its activation. Photocatalysis capable of inducing highly oxidative surrogates enables methane C—H bond scission at room temperature, thereby avoiding side reactions and coke formation caused by high reaction temperature. The scission of methane C—H bond generates •CH3 that may undergo C—C bond coupling with carbon radicals, which is a versatile way to obtain C2+ chemicals. Apart from the kinetically slow activation of methane C—H bond, photocatalysis also suffers from complex product distributions owing to the presence of varieties of radicals during photocatalytic methane conversion, and a low selectivity of desired C2+ products was achieved. In this review, we summarize the recent advances of photocatalytic methane conversion with emphasis on methane C—C bond coupling. Methods of methane C—H bond activation and radical manipulation for selective C—C bond coupling were discussed in detail. We hope this review may be a valuable guide of future work in photocatalytic methane C—C coupling.

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“…21 Since then, a rapid and exciting development in thermo-photo catalysis has been witnessed with an emphasis on catalyst design and catalytic performance enhancement. So far, thermo-photo catalysis, as a whole greater than the sum of its parts (individual thermal catalysis and photocatalysis), has been applied in a wide range of chemical processes such as CO 2 reduction, [22][23][24][25][26] CH 4 oxidation, [27][28][29][30][31][32][33] CO conversion, [34][35][36][37][38] production, 21,[39][40][41][42] N 2 fixation, [43][44][45][46] pollutant degradation, [47][48][49][50][51] and organic synthesis, [52][53][54][55][56] showing high activity, tuneable selectivity, and excellent stability under mild conditions at low cost, owing to the synergetic effects of thermal and photo energies (Fig. 2).…”

Section: Introductionmentioning

confidence: 99%