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Abatement of dichloromethane with high selectivity over defect-rich MOF-derived Ru/TiO2 catalysts

文献类型：期刊论文

作者Chai, Shaohua1,2; Li, Shuangde1; Zhang, Le1,2; Fan, Guijun1,2; Nie, Linfeng1; Zhou, Xin1,2; Yang, Wuxinchen1,2; Li, Weiman1; Chen, Yunfa1,2,3
刊名NANOSCALE
出版日期2022-11-03
卷号14期号:42页码:15724-15734
ISSN号2040-3364
DOI10.1039/d2nr04261d
英文摘要The regulation of oxygen vacancies and Ru species using metal-organic frameworks was synergically adopted in a rational design to upgrade Ru/TiO2 catalysts, which are highly active for the catalytic oxidation of dichloromethane (DCM) with less undesired byproducts. In this work, Ru/M-TiO2 and Ru/N-TiO2 catalysts were synthesized by the pyrolysis of MIL-125 and NH2-MIL-125 incorporated with Ru, the existence of Ru nanoclusters and nanoparticles was detected by XAFS, respectively, and the catalytic performance was analyzed comprehensively. Complete oxidation of DCM was obtained at similar to 290 degrees C over Ru/M-TiO2 and Ru/N-TiO2 catalysts, while Ru/N-TiO2 showed quite less monochloromethane (MCM) and higher CO2 yields, and better dechlorination capacity in oxidation. The distinction comes down to that the easier desorption of chlorine could be achieved over Ru4+ which act as the main activated adsorption sites for DCM in Ru/N-TiO2, compared to oxygen vacancies that serve as the main dissociation sites in Ru/M-TiO2. Additionally, Ru/N-TiO2 exhibited superior stability and excellent resilience in moisture. An in situ DRIFTS experiment further indicated the different DCM catalytic degradation process as well as the reaction mechanism over the as-prepared catalysts.
WOS关键词DOPED TITANIUM-DIOXIDE ; METAL-ORGANIC FRAMEWORKS ; IN-SITU FTIR ; PHOTOCATALYTIC ACTIVITY ; SPECTROSCOPIC IDENTIFICATION ; FORMIC-ACID ; OXIDATION ; ADSORPTION ; NANOPARTICLES ; CH2CL2
资助项目Chinese Academy of Sciences[XDA23030300] ; Cultivating Project of Strategic Priority Research Program of Chinese Academy of Sciences[XDPB19] ; Fund of State Key Laboratory of Multi-phase Complex Systems[MPCS-2021-A-01] ; Youth Innovation Promotion Association of Chinese Academy of Sciences
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000865270900001
出版者ROYAL SOC CHEMISTRY
资助机构Chinese Academy of Sciences ; Cultivating Project of Strategic Priority Research Program of Chinese Academy of Sciences ; Fund of State Key Laboratory of Multi-phase Complex Systems ; Youth Innovation Promotion Association of Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/55159]  
专题中国科学院过程工程研究所
通讯作者Li, Shuangde; Chen, Yunfa
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式
GB/T 7714		 Chai, Shaohua,Li, Shuangde,Zhang, Le,et al. Abatement of dichloromethane with high selectivity over defect-rich MOF-derived Ru/TiO2 catalysts[J]. NANOSCALE,2022,14(42):15724-15734.
APA Chai, Shaohua.,Li, Shuangde.,Zhang, Le.,Fan, Guijun.,Nie, Linfeng.,...&Chen, Yunfa.(2022).Abatement of dichloromethane with high selectivity over defect-rich MOF-derived Ru/TiO2 catalysts.NANOSCALE,14(42),15724-15734.
MLA Chai, Shaohua,et al."Abatement of dichloromethane with high selectivity over defect-rich MOF-derived Ru/TiO2 catalysts".NANOSCALE 14.42(2022):15724-15734.

入库方式： OAI收割

来源：过程工程研究所

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