Rapid and efficient photocatalytic reduction of hexavalent chromium by using "water dispersible" TiO2 nanoparticles

被引：6

作者：

Wang, Lei ^{[1
]}

Kang, Shi-Zhao ^{[1
]}

Li, Xiangqing ^{[1
]}

Qin, Lixia ^{[1
]}

Yan, Hao ^{[1
]}

Mu, Jin ^{[1
]}

机构：

[1] Shanghai Inst Technol, Sch Chem & Environm Engn, 100 Haiquan Rd, Shanghai 201418, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 178卷

基金：

中国国家自然科学基金;

关键词：

Inorganic compounds; Semiconductors; Nanostructures; Surface properties; AQUEOUS CR(VI); REMOVAL; EVOLUTION; DEGRADATION; FABRICATION; MEMBRANE; METALS; OXIDE;

D O I：

10.1016/j.matchemphys.2016.05.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, "water dispersible" TiO2 nanoparticles were prepared, and meanwhile, their photocatalytic activity was systematically tested for the reduction of aqueous Cr(VI) ions. It is found that the as-prepared "water dispersible" TiO2 nanoparticles are a highly efficient photocatalyst for the reduction of Cr(VI) ions in water under UV irradiation, and suitable for the remediation of Cr(VI) ions wastewater with low concentration. Compared with commercial TiO2 nanoparticles (P25), the "water dispersible" TiO2 nanoparticles exhibit 3.8-fold higher photocatalytic activity. 100% Cr (VI) ions can be reduced into Cr(III) ions within 10 min when the Cr (VI) ions initial concentration is 10 mg L-1. Moreover, the electrical energy consumption can be obviously decreased using the "water dispersible" TiO2 nanoparticles. These results suggest that the "water dispersible" TiO2 nanoparticles are a promising photocatalyst for rapid removal of Cr (VI) in environmental therapy. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：190 / 195

页数：6

共 50 条

[41] Photocatalytic reduction of hexavalent chromium and degradation of di-N-butyl phthalate in aqueous Tio2 suspensions under ultraviolet light irradiation
Xu, X.-R.
Li, H.-B.
Gu, J.-D.
ENVIRONMENTAL TECHNOLOGY, 2007, 28 (09) : 1055 - 1061
[42] Photocatalytic reduction of selenite and selenate using TiO2 photocatalyst
Nguyen, VNH
Beydoun, D
Amal, R
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2005, 171 (02) : 113 - 120
[43] Multilayer UF membrane assisted by photocatalytic NZVI@TiO2 nanoparticle for removal and reduction of hexavalent chromium
Kazemi, Maryamossadat
Peyravi, Majid
Jahanshahi, Mohsen
JOURNAL OF WATER PROCESS ENGINEERING, 2020, 37
[44] Reduction of Supercooling of Water by TiO2 Nanoparticles as Nucleating Agent
Mo, Songping
Chen, Ying
Jia, Lisi
Li, Xing
Luo, Xianglong
APPLICATION OF CHEMICAL ENGINEERING, PTS 1-3, 2011, 236-238 : 1935 - 1938
[45] A novel screen-printed TiO2 photoelectrochemical sensor for direct determination and reduction of hexavalent chromium
Moakhar, Roozbeh Siavash
Goh, Gregory Kia Liang
Dolati, Abolghasem
Ghorbani, Mohammad
ELECTROCHEMISTRY COMMUNICATIONS, 2015, 61 : 110 - 113
[46] Synthesis and Characterization of TiO2 Nanoparticles for the Reduction of Water Pollutants
Lusvardi, Gigliola
Barani, Corrado
Giubertoni, Federica
Paganelli, Giulia
MATERIALS, 2017, 10 (10):
[47] Electrochemical detection and photochemical detoxification of hexavalent chromium (Cr(VI)) by Ag doped TiO2 nanoparticles
Ravishankar, T. N.
Muralikrishna, S.
Kumar, K. Suresh
Nagaraju, G.
Ramakrishnappa, T.
ANALYTICAL METHODS, 2015, 7 (08) : 3493 - 3499
[48] Magnetic separation of water suspensions containing TiO2 photocatalytic nanoparticles
Bakhteeva, Iu A.
Medvedeva, I., V
Zhakov, S., V
Byzov, I., V
Filinkova, M. S.
Uimin, M. A.
Murzakaev, A. M.
SEPARATION AND PURIFICATION TECHNOLOGY, 2021, 269
[49] Reduction of supercooling of water by TiO2 nanoparticles as observed using differential scanning calorimeter
Mo, Songping
Chen, Ying
Jia, Lisi
Luo, Xianglong
JOURNAL OF EXPERIMENTAL NANOSCIENCE, 2013, 8 (04) : 533 - 539
[50] A Highly Efficient PhotocatalystHydrogenated Black TiO2 for the Photocatalytic Splitting of Water
Hu, Yun Hang
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (50) : 12410 - 12412

← 1 2 3 4 5 →