材料科学
光催化
纳米点
纳米复合材料
量子产额
辐照
产量(工程)
选择性
阳光
可见光谱
光化学
化学工程
甲醇
纳米技术
催化作用
光电子学
有机化学
复合材料
化学
光学
荧光
物理
工程类
核物理学
作者
Dinesh Kumar,Richa Jaswal,Chan Hee Park,Cheol Sang Kim
标识
DOI:10.1021/acsami.3c06730
摘要
Here, we report monodispersed tricomponent MnNSs–SnO2@Pt and MnNFs–SnO2@Pt nanocomposites prepared by simultaneous SnO2 and Pt nanodot coating on Mn nanospheres (MnNSs) and Mn nanoflowers (MnNFs) for highly efficient CO2 photoreduction in visible–NIR–sunlight irradiation. MnNFs–SnO2@Pt showed higher efficiency with a quantum yield of 3.21% and a chemical yield of 5.45% for CO2 conversion under visible light irradiation for HCOOH formation with 94% selectivity. Similarly, MnNFs–SnO2@Pt displayed significant photocatalytic efficiency in NIR and sunlight irradiation for HCOOH yield. MnNFs–SnO2@Pt nanocomposites also showed robust morphology and sustained structural stability with shelf-life for at least 1 year and were utilized for at least 10 reaction cycles without losing significant photocatalytic efficiency. The high surface area (94.98 m2/g), efficient electron–hole separation, and Pt-nanodot support in MnNFs-–SnO2@Pt contributed to a higher photocatalytic efficacy toward CO2 reduction.
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