TiO2-x nanoparticles dispersed in center-radial channels of dendritic mesoporous silica nanospheres (DMSNs) as novelly structured photocatalysts

doi:10.1007/s10853-021-06049-z

	TiO2-x nanoparticles dispersed in center-radial channels of dendritic mesoporous silica nanospheres (DMSNs) as novelly structured photocatalysts
	Wang, Yabin; Ma, Hui; Guo, Jingjing; Han, Yu; Ding, Xiuping; Zhang, Yantu
刊名	JOURNAL OF MATERIALS SCIENCE
	2021-09
卷号	56 期号:26 页码:14659-14671
ISSN号	0022-2461
DOI	10.1007/s10853-021-06049-z
英文摘要	The center-radial channels throughout dendritic mesoporous silica nanospheres (DMSNs) give rise to easily approachable internal spaces, high specific surface area, large pore volumes, etc. Some other substances with matchable sizes could be decorated into DMSNs' channels. As a result, DMSNs are very fascinating platforms for catalysis, tumor therapy, drug delivery, and so on. In this study, we demonstrate a facile approach of introducing black TiO2- x nanoparticles into DMSNs' center-radial channels. Dendritic mesoporous silica&titania nanospheres (DMSTNs) were initially manufactured by coating DMSNs with tetrabutyl orthotitanate precursor and calcination in air. Black dendritic mesoporous silica&titania nanospheres (b-DMSTNs) with TiO2-x particles dispersed in DMSTNs channels were then developed by reducing DMSTNs with NaBH4 under Ar atmosphere. There exist abundant Ti3+ and oxygen vacancies in TiO2-x bulks. Even though the as-prepared structured material cannot work as cathode materials for lithium-ion battery, they can satisfactorily serve as photocatalysts for H-2 production and CO2 reduction under simulated sunlight. The b-DMSTNs can yield ca. (i) 11,939 mu mol.g(-1) H-2 with a 2387 mu mol.g(-1).h(-1) rate in 5 h with the assistance of chloroplatinic acid, greater than that of white DMSTNs which produce about 9578 mu mol.g(-1) H-2 with a 1915 mu mol.g(-1).h(-1) rate; (ii) 14.78 mu mol.g(-1) CO (74.43%) and 5.07 mu mol.g(-1) CH4 (25.57%) with its specific selectivity.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34310]
专题	青海盐湖研究所_管理部门
推荐引用方式 GB/T 7714	Wang, Yabin,Ma, Hui,Guo, Jingjing,et al. TiO2-x nanoparticles dispersed in center-radial channels of dendritic mesoporous silica nanospheres (DMSNs) as novelly structured photocatalysts[J]. JOURNAL OF MATERIALS SCIENCE,2021,56(26):14659-14671.
APA	Wang, Yabin,Ma, Hui,Guo, Jingjing,Han, Yu,Ding, Xiuping,&Zhang, Yantu.(2021).TiO2-x nanoparticles dispersed in center-radial channels of dendritic mesoporous silica nanospheres (DMSNs) as novelly structured photocatalysts.JOURNAL OF MATERIALS SCIENCE,56(26),14659-14671.
MLA	Wang, Yabin,et al."TiO2-x nanoparticles dispersed in center-radial channels of dendritic mesoporous silica nanospheres (DMSNs) as novelly structured photocatalysts".JOURNAL OF MATERIALS SCIENCE 56.26(2021):14659-14671.