题目：

Greenhouse-inspired Supra-photothermal CO₂ Catalysis

作者：

Mujin Cai^1†, Zhiyi Wu^1†, Zhao Li^1,2†, Lu Wang³, Wei Sun², Athanasios A. Tountas², Chaoran Li¹, Shenghua Wang¹, Kai Feng¹, Ao-Bo Xu⁴, Sanli Tang², Alexandra Tavasoli², Meiwen Peng¹, Wenxuan Liu¹, Amr S. Helmy⁵, Le He¹*, Geoffrey A. Ozin²* and Xiaohong Zhang¹*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren’ai Road, Suzhou, P.R. China

²Solar Fuels Group, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada

³The Chinese University of Hong Kong, Shenzhen, China

⁴Department of Chemistry, University of Western Ontario, London, Ontario, Canada

⁵The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada

摘要：

Converting carbon dioxide photocatalytically into fuels using solar energy is an attractive route to move away from a reliance on fossil fuels. Photothermal CO₂ catalysis is one approach to achieve this, but improved materials that can more efficiently harvest and use solar energy are needed. Here, we report a supra-photothermal catalyst architecture—inspired by the greenhouse effect—that boosts the performance of a catalyst for CO₂ hydrogenation compared to traditional photothermal catalyst designs. The catalyst consists of a nanoporous-silica-encapsulated nickel nanocrystal (Ni@p-SiO₂), which is active for methanation and reverse water–gas shift reactions. Under illumination, the local temperatures achieved by Ni@p-SiO₂ exceed those of Ni-based catalysts without the SiO₂ shell. We suggest that the heat insulation and infrared shielding effects of the SiO₂ sheath confine the photothermal energy of the nickel core, enabling a supra-photothermal effect. Catalyst sintering and coking is also lessened in Ni@p-SiO₂, which may be due to spatial confinement effects.

影响因子：

46.495

分区情况：

1区

链接：

https://www.nature.com/articles/s41560-021-00867-w