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Song MS, Patil RP, Hwang IS, Mahadik MA, Jang TH, Oh BT, Chae WS, Choi SH, Lee HH, Jang JS. In situ fabrication of Ag decorated porous ZnO photocatalyst via inorganic-organic hybrid transformation for degradation of organic pollutant and bacterial inactivation. CHEMOSPHERE 2023; 341:140057. [PMID: 37673185 DOI: 10.1016/j.chemosphere.2023.140057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/08/2023]
Abstract
In this study, in situ silver (Ag) - porous ZnO photocatalysts were synthesized via solvothermal and post-annealing treatment. The formation of the porous ZnO structure due to the removal of organic moieties from the inorganic-organic hybrids Ag-ZnS(en)0.5 during the annealing process. The optimal Ag-ZnO photocatalyst showed excellent photocatalytic degradation activity, with 95.5% orange II dye and 97.2% bisphenol A (BPA) degradation under visible light conditions. Additionally, the photocatalytic inactivation of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) led to a 97% inactivation rate after 2 h under dark conditions. Trapping experiments suggest that the superoxide anion (O2-) radicals are the main active species to degrade the organic dye. The improved photocatalytic dye degradation activity and inactivation of bacteria were attributed to the synergistic effect of Ag and porous ZnO structure, increased surface area, and efficiently separated the photoexcited charge carriers. This work could provide an effective strategy for the synthesis of porous structures toward organic pollutant degradation and bacterial inactivation in wastewater.
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Affiliation(s)
- Min Seok Song
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Ruturaj P Patil
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - In Seon Hwang
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Mahadeo A Mahadik
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Tae-Hu Jang
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Byung Taek Oh
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Weon-Sik Chae
- Analysis Research Division, Daegu Center, Korea Basic Science Institute, Daegu, 702-701, Republic of Korea
| | - Sun Hee Choi
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hyun Hwi Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
| | - Jum Suk Jang
- Division of Biotechnology, Safety, Environment, and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea.
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Strengthen Air Oxidation of Refractory Humic Acid Using Reductively Etched Nickel-Cobalt Spinel Catalyst. Catalysts 2022. [DOI: 10.3390/catal12050536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Nickel-cobalt spinel catalyst (NCO) is a promising catalyst for air oxidation of humic acid, which is a typical natural refractory organic matter and a precursor of toxic disinfection by-products. In this study, reductive etchers, NaBH4 or Na2SO3, were used to adjust the NCO surface structure to increase the performance. The modified catalyst (NCO-R) was characterized, and the relationship between its intrinsic properties and catalytic paths was discovered. The results of O2-temperature programmed desorption, NH3-temperature programmed desorption, and X-ray photoelectron spectroscopy (XPS) demonstrated that reductant etching introduced oxygen vacancies to the surface of NCO and increased active surface oxygen species and surface acidity. In addition, the modification did not change the raw hollow sphere structure of NCO. The crystallinity and specific surface area of NCO-R increased, and average pore size of NCO-R decreased. XPS results showed that the ratio of Co3+/Co2+ in NCO-R decreased compared with NCO, while the ratio of Ni3+/Ni2+ increased. The results of H2-temperature programmed reduction showed that the H2 reduction ability of NCO-R was stronger. Due to these changes in chemical and physical properties, NCO-R exhibited much better catalytic performance than NCO. In the catalytic air oxidation of humic acid at 25 °C, the total organic carbon (TOC) removal rate increased significantly from 44.4% using NCO to 77.0% using NCO-R. TOC concentration of humic acid decreased by 90.0% after 12 h in the catalytic air oxidation using NCO-R at 90 °C.
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Kumar A, Prasad B. Mechanistic approach of SO4•−/•OH radical toward target pollutants degradation simultaneously enhanced activity and stability of perovskite-like catalyst SrCuxNi1-xO3. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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4
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A comparative study on dark adsorption of dyes using mesoporous MCM-41 catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04631-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xie J, Ma J, Zhao S, Waite TD. Flow anodic oxidation: Towards high-efficiency removal of aqueous contaminants by adsorbed hydroxyl radicals at 1.5 V vs SHE. WATER RESEARCH 2021; 200:117259. [PMID: 34058481 DOI: 10.1016/j.watres.2021.117259] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/08/2021] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
Electrochemical advanced oxidation processes (EAOPs) have emerged as a promising water treatment alternative but major breakthroughs are still needed in order for EAOPs to be competitive with traditional treatment technologies in terms of energy cost. Most existing studies have been conducted at high potentials to generate the powerful hydroxyl radical oxidant (aqueous •OH). While adsorbed hydroxyl radicals (OH*) may form at a much lower energy cost, their possible utilization is limited due to the poor mass transfer of this highly reactive species on solid electrodes. In this report, we describe a novel flow anode system using 4-16 μm Magnéli phase titanium suboxide particles as the anode material which enables the generation of a high steady state •OH concentration (5.4 × 10-12 mol m-2) at only 1.5 V (vs SHE) in a dilute electrolyte (5 mM KH2PO4). The energy cost of removal per order of selected water contaminants (tetracycline and orange II in this study) using the flow anode is 1.5--6.7 Wh m-3, which is 1 - 4 orders of magnitude lower than that of existing techniques. The anode material used demonstrates great stability with the configuration readily scaled up. The results of this study provide new insight into a high efficiency, low cost water treatment technology for organic contaminant degradation.
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Affiliation(s)
- Jiangzhou Xie
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jinxing Ma
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Shixin Zhao
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - T David Waite
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province, 214206, PR China.
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6
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Solid-state preparation of mesoporous Ce–Mn–Co ternary mixed oxide nanoparticles for catalytic degradation of methylene blue. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2020.10.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Song J, Zhang F, Hu Q, Jiang W, Li D, Zhang B. A Novel CeO
2
/Cu
2
O/CuO Nanocomposite Designed from a CeAlCu Glass Precursor as an Excellent Dual Function Catalyst in Dye Wastewater Remediation. ChemCatChem 2020. [DOI: 10.1002/cctc.202001717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jingjing Song
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
- School of Material and Chemical Engineering Bengbu University Bengbu 233030 P. R. China
| | - Fabao Zhang
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
| | - Qingzhuo Hu
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
| | - Wei Jiang
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
| | - Dongdong Li
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
| | - Bo Zhang
- Engineering Research Center of High Performance Copper Alloy Materials and Processing Ministry of Education Hefei University of Technology Hefei 230009 P. R. China
- School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
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Abstract
Catalytic air oxidation (CAO) is an economical, environmentally friendly, and efficient
technology used to treat wastewater that contains refractory organics. This review analyzes recent
studies regarding five common types of CAO that use external energy sources (heat, light radiation,
microwave, and electricity) or non-oxidizing chemical promoters (nitrites and sulfites). Methods
include hydrothermal, electro-assisted, photocatalytic, microwave-assisted, and non-oxidizing
chemical-assisted CAO. The associated catalytic mechanisms are discussed in detail in order to explain
the connections between CAO catalytic pathways. Mechanisms include O2 activation via excitation,
free-radical autocatalytic reactions, and coordination catalysis. Classical kinetic mechanisms,
including Mars-van Krevelen and Langmuir-Hinshelwood, are also proposed to reveal
overall CAO dynamic processes. The catalysts used in each CAO technology are summarized, with
a focus on their catalytic pathways and the methods by which they might be improved. Finally, important
challenges and research directions are proposed. The proposals focus on further research regarding
catalyst mechanisms, mechanism-guided catalyst design, and process improvement.
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Affiliation(s)
- Qi Jing
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Huan li
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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Kebede WL, Kuo DH, Ahmed KE, Abdullah H. Dye degradation over the multivalent charge- and solid solution-type n-MoS2/p-WO3 based diode catalyst under dark condition with a self-supporting charge carrier transfer mechanism. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.04.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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10
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Chen H, Motuzas J, Martens W, Diniz da Costa JC. Improved dark ambient degradation of organic pollutants by cerium strontium cobalt perovskite. J Environ Sci (China) 2020; 90:110-118. [PMID: 32081308 DOI: 10.1016/j.jes.2019.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
This work investigates the effect of cerium substation into strontium cobalt perovskites (CeSrCoO) for the oxidative degradation of Orange II (OII) in dark ambient conditions without the aid of any external stimulants such as light, heating or chemical additives. The OII degradation rate by CeSrCoO reached 65% in the first hour, whilst for the blank sample without cerium (SrCoO) took over 2 hr to reach the same level of OII degradation. Hence, the cerium substitution improved the catalytic activity of the perovskite material, mainly associated with the Ce0.1Sr0.9CoO3 perovskite phase. Upon contacting CeSrCoO, the -NN- azo bonds of the OII molecules broke down resulting in electron donation and the formation of by-products. The electrons are injected into the CeSrCoO and resulted in a redox pair of Co3+/Co2+, establishing a bridge for the electron transfer between OII and the catalysts. Concomitantly, the electrons also formed reactive species (·OH) responsible for OII degradation as evidenced by radical trapping experiment. Reactive species were formed via the reaction between O2 and donated electrons from OII with the aid of cobalt redox pair. As the prepared materials dispensed with the need for light irradiation and additional oxidants, it opens a window of environmental applications for treating contaminated wastewaters.
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Affiliation(s)
- Huihuang Chen
- The University of Queensland, FIM(2)Lab - Functional Interfacial Materials and Membranes Laboratory, School of Chemical Engineering, Brisbane, Qld 4072, Australia; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui 230026, China
| | - Julius Motuzas
- The University of Queensland, FIM(2)Lab - Functional Interfacial Materials and Membranes Laboratory, School of Chemical Engineering, Brisbane, Qld 4072, Australia.
| | - Wayde Martens
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, Qld 4000, Australia
| | - João C Diniz da Costa
- The University of Queensland, FIM(2)Lab - Functional Interfacial Materials and Membranes Laboratory, School of Chemical Engineering, Brisbane, Qld 4072, Australia; LAQV-REQUIMTE, (Bio)Chemical Process Engineering, Department of Chemistry, Faculty of Science and Technology, Universidade NOVA de Lisboa, Caparica 2829-516, Portugal
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11
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Hassan QU, Yang D, Zhou JP. Controlled Fabrication of K 2Ti 8O 17 Nanowires for Highly Efficient and Ultrafast Adsorption toward Methylene Blue. ACS APPLIED MATERIALS & INTERFACES 2019; 11:45531-45545. [PMID: 31729228 DOI: 10.1021/acsami.9b12422] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Advanced adsorbents need high adsorption rate and superior adsorption capability to clean up organic methylene blue (MB) from wastewater. We prepared K2Ti8O17 nanowires grown along the [0 1 0] direction with a one-step hydrothermal method. The K2Ti8O17 nanowires with tens of nanometers in diameter and tens of micrometers in length were achieved with smooth surfaces and twisted wire-like morphology. The K2Ti8O17 nanowires exhibit high uptake capacity of ∼208.8 mg·g-1 in the MB removal under equilibrium pH = 7. The adsorption equilibrium of MB onto the K2Ti8O17 adsorbent is achieved with a 97% removal rate of MB within only ∼21 min, which is the shortest adsorption time among the recently reported inorganic adsorbents toward MB. The adsorption process has a good agreement with the well-known pseudo-second-order kinetic model (k2 = 0.2) and the Langmuir isotherm model. Fourier transform infrared measurements suggest that the adsorption can be assigned to the hydrogen bonding and electrostatic attraction between MB and K2Ti8O17. This ultrafast removal ability is due to the larger (0 2 0) interplanar spacing and zigzag surface structure of the nanowires, which provide abundant active adsorption sites. Thermodynamic parameters reflect the spontaneous, exothermic, and feasible uptake of MB. Besides, K2Ti8O17 nanowires enjoy high adsorptive ability for chromium(VI) ions and photocatalytic removal toward NO. This work highlights the great significance of K2Ti8O17 nanowires as a low-cost promising material used for the adsorptive elimination of organic contaminations in fast water purification on a large scale.
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Affiliation(s)
- Qadeer Ul Hassan
- School of Physics and Information Technology , Shaanxi Normal University , Xi'an 710119 , People's Republic of China
| | - Dou Yang
- School of Physics and Information Technology , Shaanxi Normal University , Xi'an 710119 , People's Republic of China
| | - Jian-Ping Zhou
- School of Physics and Information Technology , Shaanxi Normal University , Xi'an 710119 , People's Republic of China
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Van HT, Nguyen LH, Hoang TK, Tran TP, Vo AT, Pham T, Nguyen X. Using FeO-constituted iron slag wastes as heterogeneous catalyst for Fenton and ozonation processes to degrade Reactive Red 24 from aqueous solution. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Chen H, Fu W, Xing Y, Zhang J, Ku J. Engineering SrCu xO composition to tailor the degradation activity toward organic pollutant under dark ambient conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:16449-16456. [PMID: 30980377 DOI: 10.1007/s11356-019-05047-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
The composition of SrCuxO mixed metal oxides (MMOs) was engineered via varying the amount of copper relative to strontium. As-synthesized SrCuxO were highly active for degrading methyl orange (MO) pollutant at dark ambient conditions without the aid of other reagents. The catalytic activity of SrCuxO demonstrated a reverse-volcano relationship with copper content. Copper-rich MMOs (SrCu2O) exhibited the highest degradation activity for MO by far and degraded ca. 96% MO within 25 min. MO degradation over SrCu2O was a surface-catalytic reaction and fitted pseudo-first-order reaction kinetics. The contact between MO molecules and catalyst surface initiated the reaction via the catalytic-active phase (Cu+/Cu2+ redox pair), which serves as an electron-transfer shuttle ([Formula: see text]) from MO to dissolved O2, inducing the consecutive generation of reactive oxygen species, which resulted in MO degradation as evidenced by radical trapping experiment. XPS and XRD analysis revealed that active phases in SrCu2O materials underwent irreversible transformation after reaction, contributing to the observed deactivation in the cycling experiment. The observations in this study demonstrate the significance of chemical composition tailoring in catalyst synthesis for environmental remediation under dark ambient conditions. Graphical abstract.
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Affiliation(s)
- Huihuang Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China.
- College of Zijin Mining, Fuzhou University, Fuzhou, 350116, Fujian, China.
| | - Weng Fu
- School of Chemical Engineering, The University of Queensland, Brisbane, Qld, 4072, Australia
| | - Yulin Xing
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Jinxuan Zhang
- School of Chemical Engineering, The University of Queensland, Brisbane, Qld, 4072, Australia
| | - Jiangang Ku
- College of Zijin Mining, Fuzhou University, Fuzhou, 350116, Fujian, China.
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