Reusable Platinum-Deposited Anatase/Hexa-Titanate Nanotubes: Roles of   Reduced and Oxidized Platinum on Enhanced Solar-Light-Driven   Photocatalytic Activity

doi:10.1021/acssuschemeng.6b01931

CORC > 北京大学 > 环境科学与工程学院

	Reusable Platinum-Deposited Anatase/Hexa-Titanate Nanotubes: Roles of Reduced and Oxidized Platinum on Enhanced Solar-Light-Driven Photocatalytic Activity
	Cai, Zhengqing ; Zhao, Xiao ; Wang, Ting ; Liu, Wen ; Zhao, Dongye
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2017
关键词	Catalyst Photocatalysis Photodegradation PAH Reusability Water treatment POLYCYCLIC AROMATIC-HYDROCARBONS CALCINATION TEMPERATURE HYDROTHERMAL METHOD DOPED TIO2 SIMULTANEOUS REMOVAL DEGRADATION ADSORPTION OXIDATION PT/TIO2 WATER
DOI	10.1021/acssuschemeng.6b01931
英文摘要	A new class of photocatalysts, referred to as Pt(0)- or Pt(IV)deposited anatase/hexa-titanate nanotubes (Pt(0)-TNTs-600 and Pt(IV)-TNTs-600), were prepared through a three-step process: hydrothermal conversion of commercial TiO2 to titanate nanotubes and subsequent deposition of Pt and calcination. At the optimal Pt dosage (0.1 wt %) and calcination temperature (600 degrees C), Pt(0)-TNTs-600 showed the highest photocatalytic activity for degrading phenanthrene. The apparent pseudo-first order rate constant (k(1)) was determined to be 0.12 h(-1), which was similar to 2 and 3 times of that for Pt(IV)-TNTs-600 and P25. TEM, XRD, FTIR, and XPS analyses indicate that Pt(0)-TNTs-600 is a composite of anatase and hexa-titanate with metallic Pt deposited, where Pt facilitates transport of photogenerated electrons, thus inhibiting recombination of the electron hole pairs. Moreover, DRS UV vis analysis revealed a narrower optical energy gap of materials, resulting in enhanced absorbance in the visible region. The new photocatalyst could also produce more reactive oxygen species, i.e. center dot OH, than the P25 and pristine TNTs. The material can be reused in multiple cycles of water treatment operations (with almost no activity loss after six consecutive cycles). The new photocatalyst appears promising for efficient photodegradation of a host of organic pollutants in water under solar light.; U.S. Department of the Interior Bureau of Ocean Energy Management [M12AC00013]; National Natural Science Foundation of China [51508006]; SCI(E); ARTICLE; 1; 547-555; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/476485]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Cai, Zhengqing,Zhao, Xiao,Wang, Ting,et al. Reusable Platinum-Deposited Anatase/Hexa-Titanate Nanotubes: Roles of Reduced and Oxidized Platinum on Enhanced Solar-Light-Driven Photocatalytic Activity[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017.
APA	Cai, Zhengqing,Zhao, Xiao,Wang, Ting,Liu, Wen,&Zhao, Dongye.(2017).Reusable Platinum-Deposited Anatase/Hexa-Titanate Nanotubes: Roles of Reduced and Oxidized Platinum on Enhanced Solar-Light-Driven Photocatalytic Activity.ACS SUSTAINABLE CHEMISTRY & ENGINEERING.
MLA	Cai, Zhengqing,et al."Reusable Platinum-Deposited Anatase/Hexa-Titanate Nanotubes: Roles of Reduced and Oxidized Platinum on Enhanced Solar-Light-Driven Photocatalytic Activity".ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2017).