CuO improved energy band of AgO/fibrous SiO2-ZrO2 for optimized simultaneous photocatalytic redox of chromium (VI) and p-cresol using response surface methodology

被引：13
作者：
Aziz, F. F. A. [1 ]
Jalil, A. A. [1 ,2 ]
Hassan, N. S. [1 ]
Fauzi, A. A. [1 ]
Khusnun, N. F. [1 ]
Ali, M. W. [1 ,2 ]
Bahari, M. B. [3 ]
Nabgan, W. [4 ]
机构：
[1] Univ Teknol Malaysia, Fac Chem & Energy Engn, UTM Johor Bahru S81310, Johor, Malaysia
[2] Inst Future Energy, Ctr Hydrogen Energy, UTM Johor Bahru 81310, Johor, Malaysia
[3] Univ Teknol Malaysia, Fac Sci, UTM Johor Bahru 81310, Johor, Malaysia
[4] Univ Rovira & Virgili, Engn Quim, Paisos Catalans 26, Tarragona 43007, Spain
来源：
ENVIRONMENTAL RESEARCH | 2023年 / 220卷
关键词：
Chromium (VI); Fibrous silica zirconia; P-cresol; Photoredox; Ternary photocatalyst; Water treatment; ENHANCED PHOTODEGRADATION; EFFICIENT PHOTOCATALYST; LIGHT; DEGRADATION; REDUCTION; OXIDATION; CR(VI); NANOPARTICLES; NANOPOWDERS; POLLUTANTS;
D O I：
10.1016/j.envres.2022.115151
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Ternary CuO/AgO/FSZr photocatalysts were fabricated via the hydrothermal and electrochemical methods with three different CuO loading (1, 3 and 5 wt%), indicated as 1CuO/AgO/FSZr, 3CuO/AgO/FSZr and 5CuO/AgO/ FSZr. The photocatalytic reaction was tested towards simultaneous chromium (VI) photoreduction and p-cresol photooxidation and the performance in order as follow: 3CuO/AgO/FSZr > 5CuO/AgO/FSZr > 1CuO/AgO/FSZr > AgO/FSZr > FSZr. CuO/AgO/FSZr photocatalysts showed an improvement in photocatalytic activity compared to AgO/FSZr and FSZr due to the reduction potential of chromium (VI) aligned closer to the conduction band of CuO and provided abundant free active electrons (e- ) and holes (h+) with efficient transportation and migration. Interestingly, the 3CuO/AgO/FSZr was established as the best photocatalyst with 98% reduction of chromium (VI) and 83% oxidation ofp-cresol simultaneously, owing to its strong corporation between the metal oxides and support and higher total pore volume. The Langmuir-Hinshelwood model were employed for kinetics which followed the pseudo-first-order kinetics model well. Based on the simultaneous photocatalytic mechanism, chromium (VI) and p-cresol were directly reduced and oxidized by e- and h+, respectively. The response surface methodology (RSM) discovered that the quadratic term initial concentration of chromium (VI) is the main sig-nificant factor in photocatalytic performance. The optimum parameters for simultaneous photoredox of chro-mium (VI) and p-cresol predicted from RSM are 9.6 mg L-1 of chromium (VI) concentration, 9.8 mg L-1 of p -cresol concentration and 0.32 g L-1 of catalyst dosage. Under these conditions the error between the predicted and experimental values is only 3.7%. The 3CuO/AgO/FSZr sustained the photocatalytic performance after reused for five cycles and could oxidized various organic pollutants as well as reduced chromium (VI) simultaneously.
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页数：12
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共 67 条
[1]   Structural and optical properties of Cu-doped ZnAl2O4 and its application as photocatalyst for Cr(VI) reduction under sunlight [J].
Akika, F. Z. ;
Benamira, M. ;
Lahmar, H. ;
Trari, M. ;
Avramova, I ;
Suzer, S. .
SURFACES AND INTERFACES, 2020, 18
[2]   Synthesis of Co doped ZnWO4 for simultaneous oxidation of RhB and reduction of Cr(VI) under UV-light irradiation [J].
Alam, Umair ;
Khan, Azam ;
Bahnemann, Detlef ;
Muneer, M. .
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2018, 6 (04) :4885-4898
[3]   Effect of zinc oxide amounts on the properties and antibacterial activities of zeolite/zinc oxide nanocomposite [J].
Alswat, Abdullah A. ;
Bin Ahmad, Mansor ;
Saleh, Tawfik A. ;
Bin Hussein, Mohd Zobir ;
Ibrahim, Nor Azowa .
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 2016, 68 :505-511
[4]   Green carbonaceous material-fibrous silica-titania composite photocatalysts for enhanced degradation of toxic 2-chlorophenol [J].
Azami, M. S. ;
Jalil, A. A. ;
Hassan, N. S. ;
Hussain, I ;
Fauzi, A. A. ;
Aziz, M. A. A. .
JOURNAL OF HAZARDOUS MATERIALS, 2021, 414
[5]   A review on synergistic coexisting pollutants for efficient photocatalytic reaction in wastewater remediation [J].
Aziz, F. F. A. ;
Jalil, A. A. ;
Hassan, N. S. ;
Fauzi, A. A. ;
Azami, M. S. ;
Jusoh, N. W. C. ;
Jusoh, R. .
ENVIRONMENTAL RESEARCH, 2022, 209
[6]   Simultaneous photocatalytic reduction of hexavalent chromium and oxidation of p-cresol over AgO decorated on fibrous silica zirconia [J].
Aziz, F. F. A. ;
Jalil, A. A. ;
Hassan, N. S. ;
Fauzi, A. A. ;
Azami, M. S. .
ENVIRONMENTAL POLLUTION, 2021, 285
[7]   Enhanced visible-light driven multi-photoredox Cr(VI) and p-cresol by Si and Zr interplay in fibrous silica-zirconia [J].
Aziz, F. F. A. ;
Jalil, A. A. ;
Hassan, N. S. ;
Hitam, C. N. C. ;
Rahman, A. F. A. ;
Fauzi, A. A. .
JOURNAL OF HAZARDOUS MATERIALS, 2021, 401
[8]   Controllable structure of fibrous SiO2-ZSM-5 support decorated with TiO2 catalysts for enhanced photodegradation of paracetamol [J].
Aziz, F. F. A. ;
Jalil, A. A. ;
Triwahyono, S. ;
Mohamed, M. .
APPLIED SURFACE SCIENCE, 2018, 455 :84-95
[9]   Synergistic effect of sono-photocatalytic process for the degradation of organic pollutants using CuO-TiO2/rGO [J].
Babu, Sundaram Ganesh ;
Karthik, Peramaiah ;
John, Miriam C. ;
Lakhera, Sandeep Kumar ;
Ashokkumar, Muthupandian ;
Khim, Jeehyeong ;
Neppolian, Bernaurdshaw .
ULTRASONICS SONOCHEMISTRY, 2019, 50 :218-223
[10]   Synergy removal of Cr (VI) and organic pollutants over RP-MoS2/rGO photocatalyst [J].
Bai, Xue ;
Du, Yanyan ;
Hu, Xiaoyun ;
He, Yudong ;
He, Chunliang ;
Liu, Enzhou ;
Fan, Jun .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 239 :204-213
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