| Autor: |
Yin, Sheng, Zhong, Kang, Yu, Qing, Wang, Zhaolong, Li, Qidi, Feng, Ziyi, Du, Huishuang, Yang, Jinman, Hua, Yingjie, Zhu, Xingwang, Xu, Hui |
| Předmět: |
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| Zdroj: |
Physica Status Solidi. A: Applications & Materials Science; May2021, Vol. 218 Issue 9, p1-7, 7p |
| Abstrakt: |
The activity and efficiency of photocatalytic CO2 conversion are limited by a narrow spectral response range and fast electron–hole pair recombination. As plasmonic photocatalysts have become novel catalytic materials for visible light, herein, a typical Bi2O3 photocatalyst as a template to achieve simultaneous in situ bismuth reduction and coupling on the material surface via hydrogen–argon plasma alteration is used. Combining the surface plasmon resonance effect of Bi nanoparticles and the characteristics of composite photocatalytic materials, Bi–Bi2O3 exhibits excellent efficiency in light absorption and separation of photogenerated carriers; photocatalytic activity is significantly enhanced. The CO yields are changed with plasma‐treated duration; the maximum is reached at a treatment time of 3 min, where the rate of CO production is 29.87 μmol h−1 g−1 and CH4 production rate increases from 0 to 6.29 μmol h−1 g−1. The reaction mechanism is further confirmed by in situ Fourier‐transform infrared spectroscopy. Both the efficient light‐generated carrier separation and intense light absorption contribute to the high activity of the well‐designed Bi–Bi2O3 catalyst. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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