题目：

Supra-photothermal CO₂ methanation over greenhouse-like plasmonic superstructures of ultra-small cobalt nanoparticles

作者：

Mujin Cai¹, Chaoran Li^1,3, Xingda An^1,2, Biqing Zhong¹, Yuxuan Zhou¹, Kun Feng¹, Shenghua Wang¹, Chengcheng Zhang¹, Mengqi Xiao¹, Zhiyi Wu¹, Jiari He¹, Chunpeng Wu¹, Jiahui Shen¹, Zhijie Zhu¹, Kai Feng^1,2, Jun Zhong^1,2, Le He^1,2*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China

²Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, Jiangsu, PR China

³Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, Jiangsu, PR China

摘要：

Improving the solar-to-thermal energy conversion efficiency of photothermal nanomaterials at no expense of other physicochemical properties, e.g. the catalytic reactivity of metal nanoparticles, is highly desired for diverse applications but remains a big challenge. Herein, we develop a synergistic strategy for enhanced photothermal conversion by a greenhouse-like plasmonic superstructure of 4-nm cobalt nanoparticles while maintaining their intrinsic catalytic reactivity.The silica shell plays a key role in retaining the plasmonic superstructures for efficient use of the full solar spectrum, and reducing the heat loss of cobalt nanoparticles via the nano-greenhouse effect. The optimized plasmonic superstructure catalyst exhibits supra-photothermal CO₂ methanation performance with a record-high rate of 2.3 mol·g_Co^-1·h^-1, close to 100% CH₄ selectivity, and desirable catalytic stability.This work reveals the great potential of nanoscale greenhouse effect in enhancing photothermal conversions through the combination with conventional promoting strategies, shedding light on the design of efficient photothermal nanomaterials for demanding applications.

影响因子：

29.4

分区情况：

一区

链接：

https://doi.org/10.1002/adma.202308859