Bismuth oxychloride-mediated and laser-induced efficient reduction of Cr(VI) in aqueous suspensions

M. Qamar; Z. H. Yamani

doi:10.1016/j.apcata.2012.07.004

Bismuth oxychloride-mediated and laser-induced efficient reduction of Cr(VI) in aqueous suspensions

M. Qamar^*, Z. H. Yamani

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The reduction of Cr(VI) was investigated in aqueous suspensions of BiOCl and Degussa P25 using a 355 nm laser radiation and conventional lamp. BiOCl showed better photocatalytic activity than Degussa P25 and ∼95% Cr(VI) was reduced within short time (30 min) of laser exposure in presence of BiOCl without the use of any additive. Effects of critical parameters, such as laser energy, catalyst amount and chromium concentration on the photocatalytic reduction process were investigated. The photocatalytic removal of metal was fitted to first-order kinetic and reaction rate was estimated. Structural and compositional stability of BiOCl before and after photocatalytic reaction were determined by XRD, Raman, FT-IR, TGA/DSC analyses.

Original language	English
Pages (from-to)	187-191
Number of pages	5
Journal	Applied Catalysis A: General
Volume	439-440
DOIs	https://doi.org/10.1016/j.apcata.2012.07.004
State	Published - 2012

Bibliographical note

Funding Information:
The support by Center of Excellence in Nanotechnology (CENT) , King Fahd University of Petroleum and Minerals (KFUPM) is gratefully acknowledged.

Keywords

BiOCl
Chromium reduction
Photocatalysis
Water purification

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2012.07.004

Cite this

@article{116695fcb31a469a9c63bbfcbd521153,

title = "Bismuth oxychloride-mediated and laser-induced efficient reduction of Cr(VI) in aqueous suspensions",

abstract = "The reduction of Cr(VI) was investigated in aqueous suspensions of BiOCl and Degussa P25 using a 355 nm laser radiation and conventional lamp. BiOCl showed better photocatalytic activity than Degussa P25 and ∼95\% Cr(VI) was reduced within short time (30 min) of laser exposure in presence of BiOCl without the use of any additive. Effects of critical parameters, such as laser energy, catalyst amount and chromium concentration on the photocatalytic reduction process were investigated. The photocatalytic removal of metal was fitted to first-order kinetic and reaction rate was estimated. Structural and compositional stability of BiOCl before and after photocatalytic reaction were determined by XRD, Raman, FT-IR, TGA/DSC analyses.",

keywords = "BiOCl, Chromium reduction, Photocatalysis, Water purification",

author = "M. Qamar and Yamani, \{Z. H.\}",

note = "Funding Information: The support by Center of Excellence in Nanotechnology (CENT) , King Fahd University of Petroleum and Minerals (KFUPM) is gratefully acknowledged. ",

year = "2012",

doi = "10.1016/j.apcata.2012.07.004",

language = "English",

volume = "439-440",

pages = "187--191",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Bismuth oxychloride-mediated and laser-induced efficient reduction of Cr(VI) in aqueous suspensions

AU - Qamar, M.

AU - Yamani, Z. H.

N1 - Funding Information: The support by Center of Excellence in Nanotechnology (CENT) , King Fahd University of Petroleum and Minerals (KFUPM) is gratefully acknowledged.

PY - 2012

Y1 - 2012

N2 - The reduction of Cr(VI) was investigated in aqueous suspensions of BiOCl and Degussa P25 using a 355 nm laser radiation and conventional lamp. BiOCl showed better photocatalytic activity than Degussa P25 and ∼95% Cr(VI) was reduced within short time (30 min) of laser exposure in presence of BiOCl without the use of any additive. Effects of critical parameters, such as laser energy, catalyst amount and chromium concentration on the photocatalytic reduction process were investigated. The photocatalytic removal of metal was fitted to first-order kinetic and reaction rate was estimated. Structural and compositional stability of BiOCl before and after photocatalytic reaction were determined by XRD, Raman, FT-IR, TGA/DSC analyses.

AB - The reduction of Cr(VI) was investigated in aqueous suspensions of BiOCl and Degussa P25 using a 355 nm laser radiation and conventional lamp. BiOCl showed better photocatalytic activity than Degussa P25 and ∼95% Cr(VI) was reduced within short time (30 min) of laser exposure in presence of BiOCl without the use of any additive. Effects of critical parameters, such as laser energy, catalyst amount and chromium concentration on the photocatalytic reduction process were investigated. The photocatalytic removal of metal was fitted to first-order kinetic and reaction rate was estimated. Structural and compositional stability of BiOCl before and after photocatalytic reaction were determined by XRD, Raman, FT-IR, TGA/DSC analyses.

KW - BiOCl

KW - Chromium reduction

KW - Photocatalysis

KW - Water purification

UR - https://www.scopus.com/pages/publications/84865116928

U2 - 10.1016/j.apcata.2012.07.004

DO - 10.1016/j.apcata.2012.07.004

M3 - Article

AN - SCOPUS:84865116928

SN - 0926-860X

VL - 439-440

SP - 187

EP - 191

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

ER -

Bismuth oxychloride-mediated and laser-induced efficient reduction of Cr(VI) in aqueous suspensions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this