| Title: | Self-Accelerating Interfacial Catalytic Elimination of Gaseous Sulfur-Containing Volatile Organic Compounds as Microbubbles in a Facet-Engineered Three-Dimensional BiOCl Sponge Fenton-Like Process |
| Author(s): | Qu W; Tang Z; Liu W; Liao Y; Huang Y; Xia D; Lian Q; Tian S; He C; Shu D; |
| Address: | "School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China. Key Lab of Technology on Electrochemical Energy Storage and Power Generation in Guangdong Universities, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "The elimination of gaseous sulfur-containing volatile organic compounds (S-VOCs) by a microbubble-assisted Fenton-like process is an innovative strategy. Herein, we established a microbubble-assisted Fenton-like process to eliminate malodorous microbubble CH(3)SH as representative gaseous S-VOCs, in which BiOCl nanosheets loaded on a three-dimensional sponge were exposed to (001) or (010) facets and induced Fenton-like interface reactions. Intriguingly, the microbubble-assisted Fenton-like process significantly removed 99.9% of CH(3)SH, higher than that of the macrobubble-assisted Fenton-like process (39.0%). The self-accelerating interfacial catalytic mechanism was in-depth identified by in situ ATR-FTIR, PTR-TOF-MS, EPR, and DFT computational study. The extraordinary elimination performance of microbubble-assisted Fenton-like process lies in the enhancing dissolution/mass transfer of gaseous CH(3)SH in the gas/liquid phase and the tight contact between CH(3)SH-microbubbles and 3D-BiOCl sponge due to the low rising velocity (0.13 mm s(-1)) and negative charge (-45.53 mV) of CH(3)SH-microbubbles, as well as the effective generation of (1)O(2) by activating the enriched dissolved oxygen in CH(3)SH-microbubble via effective electron-polarized sites on 3D-BiOCl sponge. Furthermore, CH(3)SH-microbubbles transferred electrons to H(2)O(2) through electron-rich oxygen vacancy centers of the 3D-BiOCl sponge to generate more *OH, thus achieving excellent elimination performance. Overall, this study demonstrates the enhanced self-accelerating interfacial catalytic elimination by S-VOC microbubble and provides the underlying mechanisms" |
| Keywords: | Gases Hydrogen Peroxide *Microbubbles Oxygen Sulfur *Volatile Organic Compounds Fenton-like process facet-engineered BiOCl sponge microbubbles oxygen vacancy self-accelerating interfacial catalysis; |
| Notes: | "MedlineQu, Wei Tang, Zhuoyun Liu, Wei Liao, Yuhong Huang, Yajing Xia, Dehua Lian, Qiyu Tian, Shuanghong He, Chun Shu, Dong eng Research Support, Non-U.S. Gov't 2022/07/27 Environ Sci Technol. 2022 Aug 16; 56(16):11657-11669. doi: 10.1021/acs.est.2c01798. Epub 2022 Jul 26" |
