Tuning degradation activity and pathways of chlorinated organic pollutants over CeO2 catalyst with acid sites: Synergistic effect of Lewis and Brønsted acid sites

2021 ◽  
Author(s):  
Xuelong Lv ◽  
Songcai Cai ◽  
Jin Chen ◽  
Dong-Xu Yan ◽  
Mingzhu Jiang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Organic Compounds ◽  
Surface Acidity ◽  
Acid Sites ◽  
Effective Strategy ◽  
Chlorinated Volatile Organic Compounds ◽  
Volatile Organic ◽  
Chlorinated Organic ◽  
Degradation Activity ◽  
Chlorinated Organic Pollutants

Enhancing the surface acidity has been seen as an effective strategy to optimize the performance of catalysts for the degradation of chlorinated volatile organic compounds (CVOCs). Herein, a series of...

scholarly journals Chlorine-Resistant Hollow Nanosphere-Like VOx/CeO2 Catalysts for Highly Selective and Stable Destruction of 1,2-Dichloroethane: Byproduct Inhibition and Reaction Mechanism

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 119
Author(s):  
Yu Huang ◽  
Shiyue Fang ◽  
Mingjiao Tian ◽  
Zeyu Jiang ◽  
Yani Wu ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Acid Sites ◽  
Strong Interactions ◽  
Hollow Nanosphere ◽  
Efficient Removal ◽  
Chlorinated Volatile Organic Compounds ◽  
Molar Ratios ◽  
Volatile Organic ◽  
Redox Ability ◽  
Species Mobility

Developing economical and robust catalysts for the highly selective and stable destruction of chlorinated volatile organic compounds (CVOCs) is a great challenge. Here, hollow nanosphere-like VOx/CeO2 catalysts with different V/Ce molar ratios were fabricated and adopted for the destruction of1,2–dichloroethane (1,2–DCE). The V0.05Ce catalyst possessed superior catalytic activity, reaction selectivity, and chlorine resistance owing to a large number of oxygen vacancies, excellent low-temperature redox ability, and chemically adsorbed oxygen (O− and O2−) species mobility. Typical chlorinated byproducts (CHCl3, CCl4, C2HCl3, and C2H3Cl3) derived from the cleavage of C–Cl and C–C bonds of 1,2–DCE were detected, which could be effectively inhibited by the abundant acid sites and the strong interactions of VOx species with CeO2. The presence of water vapor benefited the activation and deep destruction of 1,2–DCE over V0.05Ce owing to the efficient removal of Cl species from the catalyst surface.

Synergistic effect of ZnO/ZIF8 heterostructure material in photodegradation of methylene blue and volatile organic compounds with sensor operating at room temperature

2020 ◽  
Vol 289 ◽  
pp. 121494
Author(s):  
Jiraporn Buasakun ◽  
Phakinee Srilaoong ◽  
Gun Chaloeipote ◽  
Ramida Rattanakram ◽  
Chatchawal Wongchoosuk ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Volatile Organic Compounds ◽  
Synergistic Effect ◽  
Organic Compounds ◽  
Room Temperature ◽  
Volatile Organic
Sign in / Sign up

Export Citation Format

Share Document