Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates

doi:10.1021/acsomega.1c04769

GIEC OpenIR

	Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates
	Zhu, Chen 1; Guan, Shengnan 1; Li, Wenzhi 1; Ogunbiyi, Ajibola T.1; Chen, Kun 1; Zhang, Qi2
	2021-12-14
发表期刊	ACS OMEGA
ISSN	2470-1343
页码	12
通讯作者	Li, Wenzhi(liwenzhi@ustc.edu.cn) ; Zhang, Qi(zhangqi@ms.giec.ac.cn)
摘要	Here, we prepare a MnO2/CeO2 hollow sphere catalyst using the carbon sphere as a self-sacrificing template for formaldehyde (HCHO) removal. In the feed gas of 20 ppm of HCHO (balanced by N-2) + 20 vol % O-2, a HCHO removal efficiency of 70% was achieved at 20 degrees C and full conversion was reached at around 47 degrees C at GHSV = 50,000 mL (g(cat) h)(-1) for MnO2/CeO2 hollow spheres. The catalytic performance and structural and chemical properties of MnO2/CeO2 hollow spheres for the removal of core carbon spheres were explored, and the influence of using the carbon sphere as a self-sacrificing template was proved by comparing with carbon@MnO2/CeO2 (a core carbon sphere with a MnO2/CeO2 shell) and nonmorphologic MnO2/CeO2. The properties of the MnO2/CeO2 hollow spheres are significantly improved compared to carbon@MnO2/CeO2 (removal efficiency of 45% at 150 degrees C) and MnO2/CeO2 (removal efficiency of 46% at 20 degrees C) as a result of an evolution in the interaction between Mn/Ce and carbon. This increase in the interaction strength seems to (i) increase the oxygen vacancy, (ii) promote the oxygen species mobility, and (iii) improve the chemical stability of the MnO2/CeO2 hollow spheres. We believe that these results are beneficial to the fabrication of binary transition metal oxides and applications of them in HCHO removal.
DOI	10.1021/acsomega.1c04769
关键词[WOS]	CATALYTIC PERFORMANCE ; OXIDATION ; REMOVAL ; OXIDES
收录类别	SCI
语种	英语
资助项目	Major Science and Technology Projects of Anhui Province[202003a05020022] ; Key Research and Development Projects in Anhui Province[202004a06020053]
WOS研究方向	Chemistry
项目资助者	Major Science and Technology Projects of Anhui Province ; Key Research and Development Projects in Anhui Province
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000731994200001
出版者	AMER CHEMICAL SOC
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/35545
专题	中国科学院广州能源研究所
通讯作者	Li, Wenzhi; Zhang, Qi
作者单位	1.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Lab Basic Res Biomass Convers & Utilizat, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Chen,Guan, Shengnan,Li, Wenzhi,et al. Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates[J]. ACS OMEGA,2021:12.
APA	Zhu, Chen,Guan, Shengnan,Li, Wenzhi,Ogunbiyi, Ajibola T.,Chen, Kun,&Zhang, Qi.(2021).Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates.ACS OMEGA,12.
MLA	Zhu, Chen,et al."Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates".ACS OMEGA (2021):12.