A comprehensive study on the adsorption-photocatalytic processes using CoFe2O4/SiO2/MnO2 magnetic nanocomposite as a novel photo-catalyst for removal of Cr (VI) under simulated sunlight: Isotherm, kinetic and thermodynamic studies

被引:2
作者
Dorri, Hadigheh [1 ]
Moghaddam, Ali Zeraatkar [1 ]
Ghiamati, Ebrahim [1 ]
Barikbin, Behnam [2 ,3 ]
机构
[1] Univ Birjand, Coll Sci, Dept Chem, Birjand 97175615, Iran
[2] Birjand Univ Med Sci, Social Determinants Hlth Res Ctr, Birjand 97175379, Iran
[3] Mashhad Univ Med Sci, Social Determinants Hlth Res Ctr, Mashhad, Razavi Khorasan, Iran
关键词
CoFe2O4/SiO2/MnO2 magnetic nano-composite; Adsorption photocatalyst; Characterization; Cr(VI); Central composite design; HIGHLY EFFICIENT ABSORBENTS; HEXAVALENT CHROMIUM; CITRIC-ACID; CR(VI); FLOWER; WATER; NANOPARTICLES; DEGRADATION; COMPOSITE; DYE;
D O I
10.1007/s40201-021-00763-1
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Purpose The present study aimed to investigate the efficiency of CoFe2O4/SiO2/flower-like MnO2 nanoparticles as a catalyst for Cr (VI) adsorption-photocatalytic processes. Methods The magnetic nanocomposite used was first synthesized and then characterized using TEM, SEM, EDX, XRD, FTIR, XRF and BET advanced techniques. The removal of the Cr (VI) was performed through a batch adsorption approach and the effects of sample pH (A; 2-6), initial chromate concentration (B; 50-100 ppm) and adsorbent weight to sample volume ratio (C; 1-3 mg ml(-1)), hole scavenger (0.1 -0.3%w/v) and time (E; 30-60 min), to evaluate the individual and interactive effects under ultraviolet light conditions, were also studied by the central composite design in the photocatalytic process of adsorption. Results The adsorption-photocatalytic performance of the CoFe2O4/SiO2/MnO2 composite was high in which 98.1% of Cr(VI) after 30 min of photocatalytic treatment in optimum conditions (i.e. pH =3, catalyst concentration =2 mg L-1, Cr(VI) concentration =200 mg L-1, and hole scavenger concentration =0.4% (w/ v), At laboratory temperature, speed =400 rpm, under UV radiation).Under optimum conditions, Cr(VI) reductive followed pseudo-second-order kinetics and followed the Langmuir and Temkin isotherms, also, positive value of Delta H degrees indicates endothermic nature. Conclusions The results showed that the synthesized CoFe2O4/SiO2/MnO2 magnetic nanocomposite holds a great potential for use as a photocatalyst to remove Cr (VI) in adsorption reactions. It can be used as an effective catalyst in the eradication of Cr (VI) wastewater.
引用
收藏
页码:147 / 165
页数:19
相关论文
共 66 条
[1]   Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs [J].
Ambroz, Filip ;
Macdonald, Thomas J. ;
Martis, Vladimir ;
Parkin, Ivan P. .
SMALL METHODS, 2018, 2 (11)
[2]   Efficient Removal of Cobalt(II) and Strontium(II) Metals from Water using Ethylene Diamine Tetra-acetic Acid Functionalized Graphene Oxide [J].
Amer, Hany ;
Moustafa, Wafaa M. ;
Farghali, Ahmed A. ;
El Rouby, Waleed M. A. ;
Khalil, Waleed F. .
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2017, 643 (22) :1776-1784
[3]  
[Anonymous], 1988, MANGANESE SOILS PLAN
[4]  
[Anonymous], 2021, APPL MATER TODAY, DOI DOI 10.1016/j.apmt.2021.101027
[5]   Photocatalytic reduction of Cr(VI) by char/TiO2 composite photocatalyst: optimization and modeling using the response surface methodology (RSM) [J].
Antonopoulou, M. ;
Chondrodimou, I. ;
Bairamis, F. ;
Giannakas, A. ;
Konstantinou, I. .
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2017, 24 (02) :1063-1072
[6]   Simultaneous Photocatalytic Reduction of Cr(VI) and Oxidation of Benzoic Acid in Aqueous N-F-Codoped TiO2 Suspensions: Optimization and Modeling Using the Response Surface Methodology [J].
Antonopoulou, Maria ;
Giannakas, Aris ;
Konstantinou, Ioannis .
INTERNATIONAL JOURNAL OF PHOTOENERGY, 2012, 2012
[7]   Rapid and efficient ultrasonic assisted adsorption of diethyl phthalate onto FeIIFe2IIIO4@GO: ANN-GA and RSM-DF modeling, isotherm, kinetic and mechanism study [J].
Azari, Ali ;
Mahmoudian, Mohammad Hassan ;
Niarie, Maryam Hazrati ;
Es, Ismail ;
Dehganifardg, Emad ;
Kiani, Amin ;
Javidi, Allahbakhsh ;
Azari, Hossein ;
Fakhri, Yadolah ;
Khaneghah, Amin Mousavi .
MICROCHEMICAL JOURNAL, 2019, 150
[8]  
Berridge, 1987, TRAC TRENDS ANAL CHE, V6, pXVIII
[9]   Applications of Nanotechnology in Wastewater Treatment-A Review [J].
Bora, Tanujjal ;
Dutta, Joydeep .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2014, 14 (01) :613-626
[10]   Photocatalytic activity of β-MnO2 nanotubes grown on PET fibre under visible light irradiation [J].
Chan, Yim-Leng ;
Pung, Swee-Yong ;
Sreekantan, Srimala ;
Yeoh, Fei-Yee .
JOURNAL OF EXPERIMENTAL NANOSCIENCE, 2016, 11 (08) :603-618