Insights into Chlorobenzene Catalytic Oxidation over Noble Metal Loading {001}-TiO2: The Role of NaBH4 and Subnanometer Ru Undergoing Stable Ru0 <-> Ru4+Circulation
文献类型：期刊论文
| 作者 | Sun, Bohua ; Li, Qianqian; Su, Guijin; Meng, Bowen; Wu, Mingge; Zhang, Qifan; Meng, Jing; Shi, Bin
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-09-20 |
| 期号 | 0页码:1-11 |
| ISSN号 | 0013-936X |
| 关键词 | SINGLE-ATOM 001 FACETS TIO2 DEGRADATION FORMALDEHYDE COMBUSTION PERFORMANCE ACTIVATION ADSORPTION REDUCTION |
| 英文摘要 | Catalytic combustion of ubiquitous chlorinated volatile organic compounds (CVOCs) encounters bottlenecks regarding catalyst deactivation by chlorine poisoning and generation of toxic polychlorinated byproducts. Herein, Ru, Pd, and Rh were loaded on {001}-TiO2 for thermal catalytic oxidation of chlorobenzene (CB), with Ru/{001}-TiO2 representing superior reactivity, CO2 selectivity, and stability in the 1000 min on-stream test. Interestingly, both acid sites and reactive active oxygen species (ROS) were remarkably promoted via adding NaBH4. But merely enhancing these active sites of the catalyst in CVOC treatment is insufficient. Continuous deep oxidation of CB with effective Cl desorption is also a core issue successfully tackled through the steady Ru0 <-> Ru4+ circulation. This circulation was facilitated by the observed higher subnanometer Ru dispersion on {001}-TiO2 than the other two noble metals that was supported by single atom stability DFT calculation. Nearly 88 degradation products in off-gas were detected, with Ru/{001}-TiO2 producing the lowest polychlorinated benzene byproducts. An effective and sustainable CB degradation mechanism boosted by the cooperation of NaBH4 enhanced active sites and Ru circulation was proposed accordingly. Insights gained from this study open a new avenue to the rational design of promising catalysts for the treatment of CVOCs. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47660]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 通讯作者 | Su, Guijin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Bohua,Li, Qianqian,Su, Guijin,et al. Insights into Chlorobenzene Catalytic Oxidation over Noble Metal Loading {001}-TiO2: The Role of NaBH4 and Subnanometer Ru Undergoing Stable Ru0 <-> Ru4+Circulation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022(0):1-11. |
| APA | Sun, Bohua.,Li, Qianqian.,Su, Guijin.,Meng, Bowen.,Wu, Mingge.,...&Shi, Bin.(2022).Insights into Chlorobenzene Catalytic Oxidation over Noble Metal Loading {001}-TiO2: The Role of NaBH4 and Subnanometer Ru Undergoing Stable Ru0 <-> Ru4+Circulation.ENVIRONMENTAL SCIENCE & TECHNOLOGY(0),1-11. |
| MLA | Sun, Bohua,et al."Insights into Chlorobenzene Catalytic Oxidation over Noble Metal Loading {001}-TiO2: The Role of NaBH4 and Subnanometer Ru Undergoing Stable Ru0 <-> Ru4+Circulation".ENVIRONMENTAL SCIENCE & TECHNOLOGY .0(2022):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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