Affiliation:
1. Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou 215123 P. R. China
2. Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Soochow University Suzhou Jiangsu 215123 P. R. China
3. Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Suzhou Jiangsu 215123 P. R. China
Abstract
AbstractImproving 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, a synergistic strategy is developed 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 gCo−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.
Funder
National Basic Research Program of China
National Natural Science Foundation of China
China Postdoctoral Science Foundation
Natural Science Foundation of Jiangsu Province
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
2 articles.
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