Visible light-driven photocatalytic degradation and mineralization of the malachite green dye in a slurry photoreactor

被引：9

作者：

Sarwan, Bhawna ^{[1
,2
]}

Acharya, A. D. ^{[2
]}

Pare, Brijesh ^{[1
]}

机构：

[1] Vikram Univ, Govt Madhav Sci Post Grad Coll, Dept Chem, Lab Photocatalysis, Ujjain 456010, Madhya Pradesh, India

[2] Lovely Profess Univ, Jalandhar, India

来源：

PARTICULATE SCIENCE AND TECHNOLOGY | 2017年 / 35卷 / 04期

关键词：

Heterogeneous photocatalysis; malachite green; mineralization; ADVANCED OXIDATION PROCESS; WASTE-WATER; AZO-DYE; REMOVAL; BIOCL; TIO2; ZNO; PHOTODEGRADATION; IRRADIATION; BLUE;

D O I：

10.1080/02726351.2016.1168893

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The as-synthesized BiOCl nanoparticles were characterized by x-ray diffraction (XRD) and ultraviolet-visible (UV-Vis) techniques. The XRD pattern showed that a highly pure and crystalline phase has been obtained. The UV-vis diffuse reflectance spectroscopy (DRS) studies revealed the indirect band gap value of about 3.32eV for the fabricated semiconductor. The disappearance of the dye, monitored spectrophotometrically, follows approximately pseudo-first-order kinetics according to the Langmuir-Hinshelwood model. Besides, the effect of some parameters such as the influence of the initial pH, catalyst weight, initial dye concentration, oxidant concentration, and salt concentration on the degradation of malachite green dye solution under visible light irradiation were investigated. The optimum conditions for the degradation of dye were 25mgL(-1) dye concentration, pH of 8, and a catalyst amount of 0.7gmL(-1). The addition of an optimal amount of hydrogen peroxide and potassium persulfate increases the degradation rate while NaCl and Na2CO3 decrease the rate. Complete mineralization has been confirmed by UV-Vis spectroscopy

引用

页码：472 / 478

页数：7

共 32 条

[1] Cadmium selenide@sulfide nanoparticle composites: Facile precipitation preparation, characterization, and investigation of their photocatalyst activity [J].

Amiri, Omid ;

Salavati-Niasari, Masoud ;

Hosseinpour-Mashkani, S. Mostafa ;

Rafiei, Ali ;

Bagheri, Samira .

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2014, 27 :261-266

[2] TiO2 Thin Film: Preparation, Characterization, and its Photocatalytic Degradation of Basic Yellow 28 Dye [J].

Behpour, M. ;

Mehrzad, M. ;

Hosseinpour-Mashkani, S. M. .

JOURNAL OF NANOSTRUCTURES, 2015, 5 (02) :183-187

[3] Study of the photocatalytic activity of nanocrystalline S, N-codoped TiO2 thin films and powders under visible and sun light irradiation [J].

Behpour, Mohsen ;

Atouf, Vajiheh .

APPLIED SURFACE SCIENCE, 2012, 258 (17) :6595-6601

[4] Solar photocatalytic degradation of azo-dyes by photo-Fenton process [J].

Chacón, JM ;

Leal, MT ;

Sánchez, M ;

Bandala, ER .

DYES AND PIGMENTS, 2006, 69 (03) :144-150

[5] Photocatalytic degradation of azo dye acid red 14 in water on ZnO as an alternative catalyst to TiO2 [J].

Daneshvar, N ;

Salari, D ;

Khataee, AR .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2004, 162 (2-3) :317-322

[6]

Daneshvar N., 2007, INT J CHEM MOL NUCL, V1, P91

[7] Strong blue photoluminescence from single-crystalline bismuth oxychloride nanoplates [J].

Deng, Zhengtao ;

Tang, Fangqiong ;

Muscat, Anthony J. .

NANOTECHNOLOGY, 2008, 19 (29)

[8] Semiconductor-sensitized photodegradation of dichlorvos in water using TiO2 and ZnO as catalysts [J].

Evgenidou, E ;

Fytianos, K ;

Poulios, I .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 59 (1-2) :81-89

[9] Cadmium removal and recovery from aqueous solutions by novel adsorbents prepared from orange peel and Fe2O3 nanoparticles [J].

Gupta, V. K. ;

Nayak, Arunima .

CHEMICAL ENGINEERING JOURNAL, 2012, 180 :81-90

[10] Photo-catalytic degradation of toxic dye amaranth on TiO2/UV in aqueous suspensions [J].

Gupta, Vinod K. ;

Jain, Rajeev ;

Mittal, Alok ;

Saleh, Tawfik A. ;

Nayak, Arunima ;

Agarwal, Shilpi ;

Sikarwar, Shalini .

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 2012, 32 (01) :12-17

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