Photocatalytic oxidation of nitric oxide over AgNPs/TiO2-loaded carbon fiber cloths

被引：26

作者：

Kusiak-Nejman, Ewelina ^{[1
]}

Czyzewski, Adam ^{[1
]}

Wanag, Agnieszka ^{[1
]}

Dubicki, Mateusz ^{[1
]}

Sadlowski, Marcin ^{[1
]}

Wrobel, Rafal J. ^{[2
]}

Morawski, Antoni W. ^{[1
]}

机构：

[1] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Dept Inorgan Chem Technol & Environm Engn, Pulaskiego 10, PL-70322 Szczecin, Poland

[2] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Engn Catalyt & Sorbent Mat Dept, Pulaskiego 10, PL-70322 Szczecin, Poland

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2020年 / 262卷

关键词：

Titanium dioxide; Silver nanoparticles; Nitric oxide photooxidation; Carbon fiber cloths; SELECTIVE CATALYTIC-REDUCTION; TITANIUM-DIOXIDE; LOW-TEMPERATURE; TIO2; FILMS; NOX; AG; PERFORMANCE; SILVER; DECOMPOSITION; NANOPARTICLES;

D O I：

10.1016/j.jenvman.2020.110343

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Series of AgNPs/TiO2-loaded carbon fiber cloth (CFC) composites were prepared by incorporation of pristine TiO2 and three AgNPs-modified TiO2 additives onto the surface of four commercial CFCs. AgNPs/TiO2 photocatalysts were synthesized by the wet impregnation method, including NaBH4 reduction of silver ions. The silver content in the modified photocatalyst was assessed by inductively coupled plasma optical emission spectrometry (ICP-OES) as well as XRD analysis. It can be indicated that silver was successfully reduced to Ag nanoparticles what was confirmed by UV-Vis/DRS as well as XRD methods. The photocatalytic activity of the AgNPs/TiO2-loaded CFCs was evaluated during the photocatalytic oxidation (PCO) tests of nitric oxide (NO) acting as a model air contaminant under UV light. It was found that the highest NO removal rate was observed for the AgNPs/TiO2-loaded CFC material containing 3.70 wt% of AgNPs. Modification of TiO2 with AgNPs stabilized the photocatalytic efficiency of the composites during 5 as well as 24 consecutive NO photooxidation cycles. It was also concluded that the presence of AgNPs was a key factor responsible for hindering NO2 formation.

引用

页数：10

共 55 条

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