Efficient solar-light conversion for optimizing the catalytic ozonation of gaseous toluene with PdOx-LaFeO3

被引：26

作者：

Gao, Junxian ^{[1
]}

Tang, Lingling ^{[1
]}

Shen, Zhizhang ^{[1
]}

Dong, Yuming ^{[4
]}

Wang, Zhenyu ^{[1
]}

Lyu, Jinze ^{[1
,3
]}

Li, Ji ^{[1
,3
]}

Yu, Hanqing ^{[2
]}

机构：

[1] Jiangnan Univ, Sch Environm & Civil Engn, Wuxi 214122, Jiangsu, Peoples R China

[2] Univ Sci & Technol China, Sch Chem & Mat Sci, Hefei 230026, Anhui, Peoples R China

[3] Jiangnan Univ, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Jiangsu, Peoples R China

[4] Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Jiangsu, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 288卷

基金：

中国国家自然科学基金;

关键词：

Photothermal conversion; Photoelectric effect; Volatile organic compounds; Solarenergy; PHOTOCATALYTIC DEGRADATION; GAS-PHASE; AIR-POLLUTANTS; ANATASE TIO2; UV254+185 NM; OZONE; PEROVSKITE; TEMPERATURE; OXIDATION; DECOMPOSITION;

D O I：

10.1016/j.apcatb.2021.120004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solar-energy conversion is a promising strategy to enhance efficiency and save energy for pollutant elimination. In this study, we combined LaFeO3 and PdOx to simultaneously convert the energy from ultraviolet (UV), visible, and infrared (IR) light and thus enhance the catalytic ozonation of toluene. The contribution of photothermal and photoelectric effect for the prepared samples was evaluated by temperature and light-controlled experiments. Results revealed that the removal and mineralization efficiencies of toluene for 10%PdOx-LaFeO3 reached 52.9% and 40.2%, respectively, under full-spectrum illumination. The synergistic factor of full-spectrum light and ozone for 10%PdOx-LaFeO3 was 3.19 times higher than that for LaFeO3. The incident-light and absorbed-light photothermal-conversion efficiencies of full-spectrum for 10%PdOx-LaFeO3 were 2.0 and 1.7 times higher than that for LaFeO3, respectively. PdOx loading also significantly promoted the separation efficiency of photogenerated charge carriers and expanded the valid spectrum of photoelectric effect from the ultraviolet to visible regions.

引用

页数：10

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