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Hwang IS, Mahadik MA, Anushkkaran P, Song MS, Jo YJ, Chae WS, Park JH, Choi SH, Jang JS. In-situ Hf/Zr co-doped Fe 2O 3 nanorod decorated with CuO x/CoO x: Enhanced photocatalytic performance for antibacterial and organic pollutants. CHEMOSPHERE 2024; 360:142450. [PMID: 38801902 DOI: 10.1016/j.chemosphere.2024.142450] [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: 03/20/2024] [Revised: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Herein, we successfully synthesized Hf/Zr co-doping on Fe2O3 nanorod photocatalyst by a hydrothermal process and quenching methods. The synergistic roles of Hf and Zr double-doping on the bacteria inactivation test and decomposition of organic pollutants were investigated in detail for the 1 wt% CoOx loaded Hf/Zr-Fe2O3 NRs and CuOx/CoOx loaded Hf/Zr-Fe2O3 NRs photocatalyst. Initially, the rod-like porous morphology of the Hf/Zr-doped Fe2O3 NRs was produced via a hydrothermal method at various Hf co-doping (0, 2, 4, 7 and 10)%. Further, CoOx and CuOx loaded by a wet impregnation approach on the Hf/Zr-Fe2O3 NRs and a highly photoactive Hf(4)/Zr-Fe2O3 [CoOx/CuOx] NRs photocatalyst were developed. After the Hf(4)/Zr-Fe2O3 [CoOx/CuOx] NRs photocatalyst treatment, the Bio-TEM imagery of bacterial cells showed extensive morphological deviations in cell membranes. Hf(4)/Zr-Fe2O3 NR achieved 84.1% orange II degradation upon 3 h illumination, which is higher than that of Hf-Fe2O3 and Zr-Fe2O3 (68.7 and 73.5%, respectively). Additionally, the optimum sample, Hf(4)/Zr-Fe2O3 [CoOx/CuOx] photocatalyst, exhibited 95.5% orange II dye degradation after light radiation for 3 h. Optimized Hf(4)/Zr-Fe2O3 [CoOx/CuOx] catalysts exhibited 99.9% and 99.7% inactivation of E. coli and S. aureus with 120 min, respectively. Further, scavenger experiments revealed that the electrons are the primary responsible species for photocatalytic kinetics. This work will provide a rapid method for the development of high photocatalytic performance materials for bacterial disinfection and organic degradation.
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Affiliation(s)
- 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; School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Periyasamy Anushkkaran
- Department of Integrative Environmental Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - 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
| | - You Jin Jo
- 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
- Daegu Center, Korea Basic Science Institute, Daegu, 41566, Republic of Korea
| | - Jung-Hee Park
- Division of Biotechnology, Safety, Environment and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Sun Hee Choi
- Pohang Accelerator Laboratory, 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; Department of Integrative Environmental Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea.
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2
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Sun J, Li S, Wang H, Zhu L, Chen Y, Zhu J, Ma H, Xiao X, Liu T. Nitro-functionalization on MIL-53(Fe) for PCMX degradation: Elevating Fenton-like catalytic propelled by abundant reaction sites and iron cycle. CHEMOSPHERE 2024; 362:142707. [PMID: 38942245 DOI: 10.1016/j.chemosphere.2024.142707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 06/03/2024] [Accepted: 06/24/2024] [Indexed: 06/30/2024]
Abstract
To address the issue of excessive residues of 4-chloro-3,5-dimethylphenol (PCMX) in the water environment. In a one-step solvothermal process, iron-based metal-organic frameworks (Fe-MOFs) material MIL-53(Fe) undergoes a synthetic modification strategy. 2-Nitroterephthalic acid as an organic ligand reacted with Fe3+ in a solvothermal process lasting 18 h to yield the nitro-functionalized MIL-53(Fe)-NO2(18h). The objective was to augment the abundance of Fe central unsaturated coordination sites (Fe CUCs) and expedite the Fe(III)/Fe(II) redox cycle, thereby enhancing the heterogeneous Fenton-like treatment capability of pollutants. MIL-53(Fe)-NO2(18h) has excellent hydrogen peroxide (H2O2) catalytic activity and PCMX degradation across a broad pH spectrum (4.0∼8.0). Almost complete removal of PCMX was achieved within 30 min, while pseudo-first-order kinetic rate constants (kobs) increased 4.37 times over MIL-53(Fe). The confirmation of increased Fe CUCs abundance in MIL-53(Fe)-NO2(18h) was achieved through Lewis acidity, oxygen vacancies (OVs) signals, and Fe-O coordination characterization results. Density functional theory (DFT) calculations revealed that Fe CUCs in MIL-53(Fe)-NO2(18h) exhibits heightened affinity for H2O2 adsorption, showcasing stronger charge transfer and enhanced H2O2 dissociation ability. The Fe(III)/Fe(II) redox cycle, a driving force of Fenton-like reactions, was notably improved in the nitro-modified materials. These enhancements significantly expedited the Fenton-like process, resulting in the generation of increased amounts of reactive oxygen species (ROSs), with hydroxyl radicals (OH·) being pivotal components in degradation. The MIL-53(Fe)-NO2(18h)/H2O2 system has demonstrated versatility in treating a variety of emerging contaminants, achieving removal efficiencies exceeding 99.7% for other antibiotics and endocrine disruptors within 60 min. Furthermore, MIL-53(Fe)-NO2(18h) demonstrated outstanding reusability and adaptability in actual water environments. This study introduces a straightforward and environmentally friendly strategy for remediating environmental pollution using Fe-MOF-catalysed heterogeneous Fenton-like technology.
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Affiliation(s)
- Jian Sun
- Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China; Shenzhen Polytechnic University, Shenzhen, 518055, PR China
| | - Shaofeng Li
- Shenzhen Polytechnic University, Shenzhen, 518055, PR China.
| | - Huan Wang
- Shenzhen Polytechnic University, Shenzhen, 518055, PR China
| | - Lijun Zhu
- Shenzhen Polytechnic University, Shenzhen, 518055, PR China
| | - Yihua Chen
- Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China
| | - Jiaxin Zhu
- Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China
| | - Hang Ma
- Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China
| | - Xiong Xiao
- Shenzhen Xiaping Environmental Park, Shenzhen, 518047, PR China
| | - Tongzhou Liu
- Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China.
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Subash V, Manikandan V, Soup Song K, Sethuraman V, Elango D, Muthusamy G, Kim W, Jayanthi P. Tailoring CuO x loading on CoFe 2O 4 nanocubes photocatalyst for superior photocatalytic degradation of triclosan pollutants under VL irradiation and toxicological evaluation. ENVIRONMENTAL RESEARCH 2024; 258:119395. [PMID: 38909944 DOI: 10.1016/j.envres.2024.119395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/13/2024] [Accepted: 06/09/2024] [Indexed: 06/25/2024]
Abstract
In this study, we report the development of a novel CuOx(3 wt%)/CoFe2O4 nanocubes (NCs) photocatalyst through simple co-precipitation and wet impregnation methods for the efficient photocatalytic degradation of triclosan (TCS) pollutants. Initially, rod-shaped bare CoFe2O4 was synthesized using a simple co-precipitation technique. Subsequently, CuOx was loaded in various percentages (1, 2, and 3 wt%) onto the surface of bare CoFe2O4 nanorods (NRs) via the wet impregnation method. The synthesized materials were systematically characterized to evaluate their composition, structural and electrical characteristics. The CuOx(3 wt%)/CoFe2O4 NCs photocatalyst exhibited superior photocatalytic degradation efficiency of TCS (89.9%) compared to bare CoFe2O4 NRs (62.1 %), CuOx(1 wt%)/CoFe2O4 (80.1 %), CuOx(2 wt%)/CoFe2O4 (87.0 %) under visible light (VL) irradiation (λ ≥ 420 nm), respectively. This enhanced performance was attributed to the improved separation effectiveness of photogenerated electron (e-) and hole (h+) in CuOx(3 wt%)/CoFe2O4 NCs. Furthermore, the optimized CuOx(3 wt%)/CoFe2O4 NCs exhibited strong stability and reusability in TCS degradation, as demonstrated by three successive cycles. Genetic screening on Caenorhabditis elegans showed that CuOx(3 wt%)/CoFe2O4 NCs reduced ROS-induced oxidative stress during TCS photocatalytic degradation. ROS levels decreased at 30, 60, and 120-min intervals during TCS degradation, accompanied by improved egg hatching rates. Additionally, expression levels of stress-responsible antioxidant proteins like SOD-3GFP and HSP-16.2GFP were significantly normalized. This study demonstrates the efficiency of CuOx(3 wt%)/CoFe2O4 NCs in degrading TCS pollutants, offers insights into toxicity dynamics, and recommends its use for future environmental remediation.
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Affiliation(s)
- Velu Subash
- Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India; Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea
| | - Velu Manikandan
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, South Korea; Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamilnadu, 600077, India
| | - Kwang Soup Song
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, South Korea
| | - Veeran Sethuraman
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, 603203 Chennai, Tamilnadu, India
| | - Duraisamy Elango
- Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India
| | - Govarthanan Muthusamy
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea.
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea.
| | - Palaniyappan Jayanthi
- Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India.
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Feng P, He R, Gu Y, Yang F, Pan H, Shuai C. Construction of antibacterial bone implants and their application in bone regeneration. MATERIALS HORIZONS 2024; 11:590-625. [PMID: 38018410 DOI: 10.1039/d3mh01298k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Bacterial infection represents a prevalent challenge during the bone repair process, often resulting in implant failure. However, the extensive use of antibiotics has limited local antibacterial effects at the infection site and is prone to side effects. In order to address the issue of bacterial infection during the transplantation of bone implants, four types of bone scaffold implants with long-term antimicrobial functionality have been constructed, including direct contact antimicrobial scaffold, dissolution-penetration antimicrobial scaffold, photocatalytic antimicrobial scaffold, and multimodal synergistic antimicrobial scaffold. The direct contact antimicrobial scaffold involves the physical penetration or disruption of bacterial cell membranes by the scaffold surface or hindrance of bacterial adhesion through surface charge, microstructure, and other factors. The dissolution-penetration antimicrobial scaffold releases antimicrobial substances from the scaffold's interior through degradation and other means to achieve local antimicrobial effects. The photocatalytic antimicrobial scaffold utilizes the absorption of light to generate reactive oxygen species (ROS) with enhanced chemical reactivity for antimicrobial activity. ROS can cause damage to bacterial cell membranes, deoxyribonucleic acid (DNA), proteins, and other components. The multimodal synergistic antimicrobial scaffold involves the combined use of multiple antimicrobial methods to achieve synergistic effects and effectively overcome the limitations of individual antimicrobial approaches. Additionally, the biocompatibility issues of the antimicrobial bone scaffold are also discussed, including in vitro cell adhesion, proliferation, and osteogenic differentiation, as well as in vivo bone repair and vascularization. Finally, the challenges and prospects of antimicrobial bone implants are summarized. The development of antimicrobial bone implants can provide effective solutions to bacterial infection issues in bone defect repair in the foreseeable future.
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Affiliation(s)
- Pei Feng
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Ruizhong He
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Yulong Gu
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Feng Yang
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Hao Pan
- Department of Periodontics & Oral Mucosal Section, Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha 410013, China.
| | - Cijun Shuai
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
- Institute of Additive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China
- College of Mechanical Engineering, Xinjiang University, Urumqi 830017, China
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Mahadik MA, Anushkkaran P, Chae WS, Lee HH, Cho M, Jang JS. TiO 2 nanorod/nanotube interface reconstruction and synergistic role of oxygen vacancies and gold in H-Au-TiO 2 NR/NT for photoelectrochemical bacterial inactivation and water splitting. CHEMOSPHERE 2023; 341:139968. [PMID: 37643649 DOI: 10.1016/j.chemosphere.2023.139968] [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: 06/28/2023] [Revised: 08/14/2023] [Accepted: 08/24/2023] [Indexed: 08/31/2023]
Abstract
Photoelectrochemical (PEC) water splitting by semiconductor photoanodes is limited by sluggish water oxidation kinetics coupled with serious charge recombinations. In this paper, an effective strategy of TiO2 nanorod/nanotube nanostructured interface reconstruction, oxygen vacancies and surface modification were employed for stability and efficient charge transport in the photoanodes. Successive anodization and hydrothermal routes were adopted for the TiO2 NR/NT photoanodes interface reconstruction, followed by Au nanoparticles/clusters (Au NP) loading and hydrogen treatment. This resulted in H-Au-TiO2 NR/NT photoanodes. A three-dimensional structure of TiO2 NR on TiO2 NT/Ti foil nanotubes achieved the highest photocurrent density (1.42 mA cm-2 at 0.3 V vs. Ag/AgCl). The optimal oxygen vacancies and Au NP loading on TiO2 NR/NT exhibited 1.62 mA cm-2 photocurrent density at 0.3 V vs. Ag/AgCl in H-Au-TiO2 NR/NT photoelectrode, which is eight times higher than the TiO2 NT/Ti foil. TRPL analyses confirm the hydrogen treatments to TiO2 exhibited the emission lifetime (46 ns) in the H-Au-TiO2 NR/NT photoanodes due to newly formed lower Ti3+-related trapped electron states and Au NP. The optimum H-Au (4)-TiO2 NR/NT photoanodes achieved 95% photoelectrochemical (PEC) bacterial inactivation and effective PEC water splitting with (278 and 135.4) μmol of hydrogen and oxygen generation, respectively. In this study, oxygen vacancies combined with gold particles and interface reconstruction provide an innovative way to design effective photoelectrodes.
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Affiliation(s)
- 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
| | - Periyasamy Anushkkaran
- Department of Integrative Environmental Biotechnology, Safety, Environment and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Weon-Sik Chae
- Daegu Center, Korea Basic Science Institute, Daegu, 41566, Republic of Korea
| | - Hyun Hwi Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Min Cho
- Division of Biotechnology, Safety, Environment and Life Science Institute, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, 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; Department of Integrative Environmental 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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6
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Garg P, Mohapatra L, Poonia AK, Kushwaha AK, Adarsh KNVD, Deshpande U. Single Crystalline α-Fe 2O 3 Nanosheets with Improved PEC Performance for Water Splitting. ACS OMEGA 2023; 8:38607-38618. [PMID: 37867698 PMCID: PMC10586280 DOI: 10.1021/acsomega.3c05726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023]
Abstract
We report the photoelectrochemical (PEC) performance of a densely grown single crystalline hematite (α-Fe2O3) nanosheet photoanode for water splitting. Unlike expensive ITO/FTO substrates, the sheets were grown on a piece of pure Fe through controlled thermal oxidation, which is a facile low cost and one-step synthesis route. The sheets grow with a widest surface parallel to basal plane (0001). Iron oxide formed on Fe consisting of layer structure α-Fe2O3-Fe3O4-Fe is elucidated from GIXRD and correlated to spectral features observed in Raman and UV-vis spectroscopy. The top α-Fe2O3 nanosheet layer serves as a photoanode, whereas the conducting Fe3O4 layer serves to transport photogenerated electrons to the counter electrode through its back contact. Time-resolved photoluminescence (TRPL) measurements revealed significantly prolonged carrier lifetime compared to that of bulk. Compared to the thin film of α-Fe2O3 grown on the FTO substrate, ∼3 times higher photocurrent density (0.33 mA cm-2 at 1.23 VRHE) was achieved in the nanosheet sample under solar simulated AM 1.5 G illumination. The sample shows a bandgap of 2.1 eV and n-type conductivity with carrier density 9.59 × 1017 cm-3. Electrochemical impedance spectroscopy (EIS) measurements reveal enhanced charge transport properties. The results suggest that nanosheets synthesized by the simple method yield far better PEC performance than the thin film on the FTO substrate. The anodic shifts of flat band potential, delayed electron-hole recombination, and growth direction parallel to the highly conducting basal plane (0001) being some of the contributing factors to the higher photocurrent observed in the NS photoanode are discussed. Characterizations carried out before and after the PEC reaction show excellent stability of the nanosheets in an alkaline electrochemical environment.
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Affiliation(s)
- Parveen Garg
- UGC-DAE
Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452001, Madhya Pradesh, India
| | - Lokanath Mohapatra
- Department
of Metallurgical Engineering and Materials Science, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Ajay Kumar Poonia
- Department
of Physics, Indian Institute of Science
Education and Research Bhopal, Bhopal 462066, India
| | - Ajay Kumar Kushwaha
- Department
of Metallurgical Engineering and Materials Science, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | | | - Uday Deshpande
- UGC-DAE
Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452001, Madhya Pradesh, India
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7
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Zhang H, He Y, Bao X, Wang Z, Jiang W, Zheng L, Fan Y, Zheng Z, Cheng H, Wang P, Liu Y, Wang Z, Huang B. Fabrication of Hematite Photoanode Consisting of (110)-Oriented Single Crystals. CHEMSUSCHEM 2023; 16:e202300666. [PMID: 37505451 DOI: 10.1002/cssc.202300666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/06/2023] [Indexed: 07/29/2023]
Abstract
In this work, α-Fe2 O3 photoanode consisted of (110)-oriented α-Fe2 O3 single crystals were synthesized by a facile hydrothermal method. By using particular additive (C4 MimBF4 ) and regulation of hydrothermal reaction time, the Fe-25 consisted of a single-layer of highly crystalline (110)-oriented crystals with fewer grain boundaries, which was vertically grown on the substrate. As a result, the charge separation efficiency and photoelectrochemical (PEC) performance of Fe-25A (Fe-25 after dehydration treatment) have been greatly improved. Fe-25A yields a photocurrent of 1.34 mA cm-2 (1.23 V vs RHE) and an incident photon-to-current conversion efficiency (IPCE) of 31.95 % (380 nm). With the assistance of cobalt-phosphate water oxidation catalyst (Co-Pi), the PEC performance could be further improved by enhancing the holes transfer at electrode/electrolyte interface and inhibiting surface recombination. Fe-25A/Co-Pi yields a photocurrent of 2.67 mA cm-2 (1.23 V vs RHE) and IPCE value of 50.8 % (380 nm), which is 3.67 times and 2.39 times as that of Fe-2A/Co-Pi. Our work provides a simple method to fabricate highly efficient Fe2 O3 photoanodes consist of characteristic (110)-oriented single crystals with high crystallinity and high quality interface contact to enhance charge separation efficiencies.
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Affiliation(s)
- Haipeng Zhang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yujie He
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xiaolei Bao
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Zhaoqi Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Weiyi Jiang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Liren Zheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yuchen Fan
- Department of Hepatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250100, P. R. China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Hefeng Cheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Peng Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yuanyuan Liu
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Zeyan Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Baibiao Huang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
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8
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Alshammari GM, Al-Ayed MS, Abdelhalim MA, Al-Harbi LN, Qasem AA, Abdo Yahya M. Fabrication of hierarchical flower-like WO 3 nanoparticles for effective metal ions sensing and catalytic degradation of organic dyes. ENVIRONMENTAL RESEARCH 2023; 233:116468. [PMID: 37343748 DOI: 10.1016/j.envres.2023.116468] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/15/2023] [Accepted: 06/18/2023] [Indexed: 06/23/2023]
Abstract
In this work, we report on the synthesis of flower-like tungsten oxide nanoparticles (WO3 NPs) using a simple precipitation method. This paper reports a simple method for synthesizing flower-like WO3 NPs, which can be used for environmentally treating hazardous organic pollutants. The photocatalytic degradation of model artificial Orange II and Congo red was assessed under natural sunlight irradiation. The surface morphologies, crystallinity, and binding energy of the synthesized WO3 NPs were determined. The synthesized WO3 NPs exhibited good photodegradation percentages of approximately Orange II (97.6%) and Congo red dye (98.2%) after 120 min of irradiation. Furthermore, the WO3 NPs maintained their degradation ability for up to three cycles. In addition, WO3 NPs were examined in different metal ions sensing (Hg2+, Fe2+, Cu2+, Ni2+, and Cd2+) in an aqueous solution. The results showed that the WO3 NPs exhibited excellent Cd2+ ion sensing. Based on the investigations, WO3 NPs proved to be an efficient photocatalyst and hold promise as the best material for future applications in preventing water pollution.
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Affiliation(s)
- Ghedeir M Alshammari
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Mohammed S Al-Ayed
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed Anwar Abdelhalim
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Laila Naif Al-Harbi
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Akram A Qasem
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed Abdo Yahya
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
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9
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Zhou Z, Xu L, Zhu X, Wang Q, Meng X, Huhe T. Anti-fouling PVDF membranes incorporating photocatalytic biochar-TiO 2 composite for lignin recycle. CHEMOSPHERE 2023:139317. [PMID: 37392800 DOI: 10.1016/j.chemosphere.2023.139317] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/20/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
In this study, a photocatalytic biochar-TiO2 (C-Ti) composite was prepared using lignin as carbon precursor, and blended with PVDF polymer to fabricate PVDF/C-Ti MMMs via non-solvent induced phase inversion. The prepared membrane demonstrates both 1.5 times higher initial and recovered fluxes than the similarly prepared PVDF/TiO2 membrane, suggesting the C-Ti composite can help maintain higher photodegradation efficiency and better anti-fouling performance. In addition, the comparison of PVDF/C-Ti membrane against pristine PVDF membrane show that the reversible fouling and photodegradation reversible fouling of BSA increased from 10.1% to 6.4%-35.1% and 26.6%, respectively. And the FRR of PVDF/C-Ti membrane was 62.12%, 1.8 times that of PVDF membrane. The PVDF/C-Ti membrane was also applied for lignin separation, where the rejection to sodium lignin sulfonate was maintained at about 75%, and the flux recovery ratio after UV irradiation reached 90%. The demonstrated the advantages of PVDF/C-Ti membrane in photocatalytic degradation and antifouling performance.
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Affiliation(s)
- Zhengzhong Zhou
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China; Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization, Changzhou University, Changzhou, 213164, China.
| | - Lili Xu
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China
| | - Xue Zhu
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China
| | - Qian Wang
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China; Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization, Changzhou University, Changzhou, 213164, China.
| | - Xiaoshan Meng
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China; Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization, Changzhou University, Changzhou, 213164, China
| | - Taoli Huhe
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, China; Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization, Changzhou University, Changzhou, 213164, China
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10
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Manikandan V, Anushkkaran P, Hwang IS, Song MS, Kumar M, Chae WS, Lee HH, Ryu J, Mahadik MA, Jang JS. Influence of CoO x surface passivation and Sn/Zr-co-doping on the photocatalytic activity of Fe 2O 3 nanorod photocatalysts for bacterial inactivation and photo-Fenton degradation. CHEMOSPHERE 2023:139255. [PMID: 37356589 DOI: 10.1016/j.chemosphere.2023.139255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/27/2023]
Abstract
Hydrothermal and wet impregnation methods are presented in this study for synthesizing CoOx(1 wt%)/Sn-Zr codoped-Fe2O3 nanorod photocatalysts for the degradation of organic pollutants and deactivation of bacteria. A hydrothermal route was used to synthesize self-assembled rod-like hierarchical structures of Sn(0-6%) doped Zr-Fe2O3 NRs. Additionally, a wet impregnation method was used to load CoOx onto the surface of photocatalysts (Sn(0-6%)-doped Zr-Fe2O3 NRs). A series of 1 wt% CoOx modified Sn(0-6%)-doped Zr-Fe2O3 NRs were synthesized, characterized, and utilized for the photocatalytic decomposition of organic contaminants, along with the killing of E. coli and S. aureus. In comparison with 0, 2, and 6% Sn co-doped Zr-Fe2O3 NRs, the CoOx(1 wt%)/4%Sn/Zr-Fe2O3 NRs photocatalyst exhibited an E. coli and S. aureus inactivation efficiencies (90 and 98%). A bio-TEM study of treated and untreated bacterial cells revealed that the CoOx(1 wt%)/4%Sn/Zr-Fe2O3 NRs photocatalyst led to considerable changes in the bacterial cell membranes' morphology. The optimal CoOx(1 wt%)/Sn(4%) co-doped Zr-Fe2O3 NRs photocatalyst achieved degradation efficiencies of 98.5% and 94.6% for BPA and orange II dye. As a result, this work will provide a facile and effective method for developing visible light-active photocatalysts for bacterial inactivation and organic pollutants degradation.
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Affiliation(s)
- Velu Manikandan
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Periyasamy Anushkkaran
- Department of Integrative Environmental Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - In Seon Hwang
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Min Seok Song
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Manish Kumar
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Weon-Sik Chae
- Daegu Center, Korea Basic Science Institute, Daegu, 41566, Republic of Korea
| | - Hyun-Hwi Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jungho Ryu
- Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, South Korea.
| | - Mahadeo A Mahadik
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea.
| | - Jum Suk Jang
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea; Department of Integrative Environmental Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, Republic of Korea.
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11
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Sivarasan G, Manikandan V, Periyasamy S, AlSalhi MS, Devanesan S, Murphin Kumar PS, Pasupuleti RR, Liu X, Lo HM. Iron-engineered mesoporous biocarbon composite and its adsorption, activation, and regeneration approach for removal of paracetamol in water. ENVIRONMENTAL RESEARCH 2023; 227:115723. [PMID: 37003548 DOI: 10.1016/j.envres.2023.115723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/11/2023] [Accepted: 03/18/2023] [Indexed: 05/08/2023]
Abstract
Three-dimensional multi-porous Iron Oxide/carbon (Fe2O3/C) composites derived from tamarind shell biomass were synthesized by a single-step co-pyrolysis technique and utilized for Paracetamol (PAC) dismissal in the combined adsorption, and advanced oxidation such as electrochemical regeneration techniques. The Fe2O3/C composites were prepared by different pyrolysis temperatures, and named as TS750 (without Fe2O3at 750 °C), MTS450 BCs (Low-450 °C), MTS600 BCs (Moderate-600 °C) and MTS750 BCs (high-750 °C), respectively. As-prepared Fe2O3/C composite was characterized by FE-SEM, XRD, BET, and XPS analysis. The specific surface area and the spatial interaction between the interlayers of Fe2O3 and C were significantly improved by increasing the pyrolysis temperatures from 450 to 750 °C, which improved the adsorption capacity of Fe2O3/C composites in terms of higher rate constants and chemisorption kinetics. The Pseudo-second-order kinetics model fitted in the adsorption test results of Fe2O3/C composites with the highest correlation co-efficiency. The Langmuir-isotherms model fitted in the adsorption test of the TS750 and MTS450 BCs. The Freundlich isotherms model is more fit with MTS600 and MTS750 BCs. Based on the isotherm results, the MTS750 BCs achieved 46.9 mg/g of maximum PAC adsorption capacity. The optimized MTS750 composites could be completely recovered by using an advanced electrochemical oxidation regeneration approach within 180 min. Also, with the adsorption and recovery process, the TOC removal rate improved to ∼79.4%. After the 6th cycle electrochemical oxidation process, the obtained results of the re-adsorption test showed the stabile adsorption activity of the sorbent material. The data outcomes herein propose that this type of combined adsorption and electrochemical approach will be useful in commercial water treatment plants.
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Affiliation(s)
- Ganesan Sivarasan
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 41349, Taiwan
| | - Velu Manikandan
- Department of Food Science and Technology, Seoul Women's University, 621, Hwarangro, Nowon-gu, Seoul, 01797, Republic of Korea; Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, 600 077, India
| | - Selvendiran Periyasamy
- Environmental and Water Resources Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | | | - Raghavendra Rao Pasupuleti
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Xinghui Liu
- Department of Chemistry, Sungkyunkwan University (SKKU), Jangan-Gu, Suwon, 16419, Republic of Korea; School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China.
| | - Huang-Mu Lo
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 41349, Taiwan.
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12
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Manikandan V, Palanisamy G, Lee J, F Albeshr M, Fahad Alrefaei A, Pragasan LA, Zhang F, Liu X. Development of silver oxide-loaded reduced graphene oxide nanohybrids for enhanced photocatalytic activity under visible light in aqueous solutions. CHEMOSPHERE 2023:139227. [PMID: 37327825 DOI: 10.1016/j.chemosphere.2023.139227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/30/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023]
Abstract
We report on the synthesis of silver oxide/reduced graphene oxide nanocomposites (Ag/rGO NCs) using a hydrothermal technique. This paper presents a simple method for synthesizing Ag/rGO hybrid nanocomposites, which can be used for environmentally treating hazardous organic pollutants. The photocatalytic degradation of model artificial Rhodamine B dye and bisphenol A was assessed under visible light illumination. The crystallinity, binding energy, and surface morphologies of the synthesized samples were determined. The silver oxide loading sample resulted in a decrease in the rGO crystallite size. SEM and TEM images demonstrate strong adhesion of the Ag NPs to the rGO sheets. XPS analysis validated the binding energy and elemental composition of the Ag/rGO hybrid nanocomposites. The objective of the experiment was to enhance the photocatalytic efficiency of rGO in the visible region using Ag nanoparticles. The synthesized nanocomposites in the visible region exhibited good photodegradation percentages of approximately 97.5% and 98.6% after 120 min of irradiation for pure rGO, Ag NPs, and Ag/rGO nanohybrid, respectively. Furthermore, the Ag/rGO nanohybrid maintained their degradation ability for up to three cycles. The synthesized Ag/rGO nanohybrid demonstrated enhanced photocatalytic activity, expanding their potential for environmental remediation. Based on the investigations, Ag/rGO nanohybrid proved to be an effective photocatalyst and holds promise as an ideal material for future applications in preventing water pollution.
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Affiliation(s)
- Velu Manikandan
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China; Department of Food Science and Technology, Seoul Women's University, 621 Hwarangno, Nowon-gu, Seoul, South Korea; Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, 600 077, India
| | - Govindasamy Palanisamy
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea.
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
| | - Mohammed F Albeshr
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - L Arul Pragasan
- Department of Environmental Sciences, Bharathiar University, Coimbatore, 641 046, India
| | - Fuchun Zhang
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China.
| | - Xinghui Liu
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China.
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13
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Ahmad Wadaan M. Zinc oxide doped on reduced graphene oxide nanosheets activated by solar radiation for degradation of organic pollutants and bacterial inactivation. CHEMOSPHERE 2023:139105. [PMID: 37327823 DOI: 10.1016/j.chemosphere.2023.139105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/18/2023] [Accepted: 05/31/2023] [Indexed: 06/18/2023]
Abstract
Metal ion-based nanocomposite materials were recognized to exhibit a wide range of photocatalytic and biological applications. This study aims to synthesize zinc oxide doped reduced graphene oxide (ZnO/RGO) nanocomposite in sufficient quantities through the sol-gel method. The physical characters of the synthesized ZnO/RGO nanocomposite were determined by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscope (SEM), Energy-dispersive X-ray (EDS) and Transmission electron microscopy (TEM) techniques. The TEM image results revealed rod-like morphology of the ZnO/RGO nanocomposite. The X-ray photoelectron spectral data revealed the formation of ZnO nanostructures representing the banding energy gap value of 1044.6 and 1021.5 eV positions. Moreover, ZnO/RGO nanocomposites displayed excellent photocatalytic degradation with a degradation efficiency of 98.6%. This research not only demonstrates the photocatalytic efficiency of zinc oxide-doped RGO nanosheets but also illustrates the antibacterial efficacy against two different bacterial pathogens including Gram-positive E. coli and Gram-negative S. aureus. Furthermore, this research highlights an eco-friendly and inexpensive preparation of nanocomposite material for a wide range of environmental applications.
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Affiliation(s)
- Mohammad Ahmad Wadaan
- Bio-Products Research Department of Zoology, College of Sciences, King Saud University, P.O. Box; 2455, Riyadh, 11451, Saudi Arabia.
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14
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A P, Palanisamy G, L AP, F Albeshr M, Fahad Alrefaei A, Lee J, Liu X. Photocatalytic degradation of organic pollutants and inactivation of pathogens under visible light via SnO 2/rGO composites. CHEMOSPHERE 2023:139102. [PMID: 37290513 DOI: 10.1016/j.chemosphere.2023.139102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/17/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
The domains of environmental cleanup and pathogen inactivation are particularly interesting in nanocomposites (NCs) due to their exceptional physicochemical properties. Tin oxide/reduced graphene oxide nanocomposites (SnO2/rGO NCs) have potential uses in the biological and environmental fields, but little is known about them. This study aimed to investigate the photocatalytic activity and antibacterial efficiency of the nanocomposites. The co-precipitation technique was used to prepare all the samples. XRD, SEM, EDS, TEM, and XPS analyses were employed to characterize the physicochemical properties of SnO2/rGO NCs for structural analysis. The rGO loading sample resulted in a decrease in the crystallite size of SnO2 nanoparticles. TEM and SEM images demonstrate the firm adherence of SnO2 nanoparticles to the rGO sheets. The chemical state and elemental composition of the nanocomposites were validated by the XPS and EDS data. Additionally, the visible-light active photocatalytic and antibacterial capabilities of the synthesized nanocomposites were assessed for the degradation of Orange II and methylene blue, as well as the suppression of the growth of S. aureus and E. coli. As a result, the synthesized SnO2/rGO NCs are improved photocatalysts and antibacterial agents, expanding their potential in the fields of environmental remediation and water disinfection.
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Affiliation(s)
- Priyadharsan A
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077, India
| | - Govindasamy Palanisamy
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea.
| | - Arul Pragasan L
- Department of Environmental Sciences, Bharathiar University, Coimbatore, 641 046, India
| | - Mohammed F Albeshr
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
| | - Xinghui Liu
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China; Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong, China.
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15
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Alshammari GM, Al-Ayed MS, Abdelhalim MA, Al-Harbi LN, Qasem AA, Abdo Yahya M. Development of luminescence carbon quantum dots for metal ions detection and photocatalytic degradation of organic dyes from aqueous media. ENVIRONMENTAL RESEARCH 2023; 226:115661. [PMID: 36913999 DOI: 10.1016/j.envres.2023.115661] [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: 02/09/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
In the present study, fish scale waste was used for the organic synthesis of luminescence CQDs by the hydrothermal method. The impact of CQDs on improved photocatalytic degradation of organic dyes and metal ions detection is examined in this study. The synthesized CQDs had a variety of characteristics that were detected, such as crystallinity, morphology, functional groups, and binding energies. The luminescence CQDs showed outstanding photocatalytic effectiveness for the destruction of methylene blue (96.5%) and reactive red 120 dye (97.8%), respectively after 120 min exposure to visible light (420 nm). The high electron transport properties of the CQDs edges, which make it possible to efficiently separate electron-hole pairs, are attributed to the enhanced photocatalytic activity of the CQDs. These degradation results prove that the CQDs are the outcome of a synergistic interaction between visible light (adsorption); a potential mechanism is also suggested, and the kinetics is analyzed to use a pseudo-first-order model. Additionally, the metal ions detection of CQDs was studied by various metal ions (Hg2+, Fe2+, Cu2+, Ni2+, and Cd2+) in an aqueous solution and results revealed that the PL intensity of CQDs in presence of cadmium ions decreased. Studies show that the organic fabrication of CQDs are effective photocatalyst and may one day serve as the ideal material to reduce water pollution.
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Affiliation(s)
- Ghedeir Muslem Alshammari
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Mohammed Suliman Al-Ayed
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed Anwar Abdelhalim
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Laila Naif Al-Harbi
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Akram Ahmed Qasem
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed Abdo Yahya
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
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16
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Al-Ansari MM, Al-Humaid L, Aldawsari M, Al-Dahmash ND, Selvankumar T, Mythili R. Synergistic role of metal oxide loading cocatalysts on photocatalytic degradation of organic pollutants and inactive bacteria over template-free ZnFe 2O 4 nanocubes. ENVIRONMENTAL RESEARCH 2023; 223:115459. [PMID: 36764432 DOI: 10.1016/j.envres.2023.115459] [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: 01/11/2023] [Revised: 02/05/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
For wastewater treatment, a highly reliable and ecologically friendly oxidation method is always preferred. This work described the production of a new extremely effective visible light-driven Ag2Ox loaded ZnFe2O4 nanocomposties photocatalyst using a wet impregnation technique. Under visible light irradiation, the produced Ag2Ox loaded ZnFe2O4 nanocomposties were used in the photodegradation of rhodamine B (RhB) and Reactive Red 120 (RR120) dyes. Analysis using X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy revealed that Ag2Ox nanoparticles were well dispersed on the surface of ZnFe2O4 NPs and that the Ag2Ox loaded ZnFe2O4 NPs were created. When compared with bare ZnFe2O4 NPs, Ag2Ox-loaded ZnFe2O4 nanocomposites showed better photocatalytic activity for RhB and RR120 degradation under visible light (>420 nm) illumination. The reaction kinetics and degradation methodology, in addition to the photocatalytic degradation functions of Ag2Ox-loaded ZnFe2O4 nanocomposites, were thoroughly investigated. The 3 wt% Ag2Ox loaded ZnFe2O4 nanocomposites have a 99% removal efficiency for RhB and RR120, which is about 2.4 times greater than the ZnFe2O4 NPs and simple combination of 1 wt% and 2 wt% Ag2Ox loaded ZnFe2O4 nanocomposites. Furthermore, the 3 wt% Ag2Ox loaded ZnFe2O4 nanocomposites demonstrated consistent performance without decreasing activity throughout 3 consecutive cycles, indicating a potential approach for the photo-oxidative destruction of organic pollutants as well as outstanding antibacterial capabilities. According to the findings of the experiments, produced new nanoparticles are an environmentally friendly, cost-efficient option for removing dyes, and they were successful in suppressing the development of Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Mysoon M Al-Ansari
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Latifah Al-Humaid
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Majdoleen Aldawsari
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Nora Dahmash Al-Dahmash
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - T Selvankumar
- PG & Research Department of Biotechnology, Mahendra Arts & Science College, Kalippatti, 637501, Tamil Nadu, India
| | - R Mythili
- AMR and Nanotherapeutics Laboratory, Department of Pharmacology, Saveetha Dental College, Chennai, 600077, India
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17
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AlSalhi MS, Devanesan S, Asemi NN, Aldawsari M. Construction of SnO 2/CuO/rGO nanocomposites for photocatalytic degradation of organic pollutants and antibacterial applications. ENVIRONMENTAL RESEARCH 2023; 222:115370. [PMID: 36716804 DOI: 10.1016/j.envres.2023.115370] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/13/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Water contamination by reactive dyes is a serious concern for human health and the environment. In this study, we prepared high efficient SnO2/CuO/rGO nanocomposites for reactive dye degradation. For structural analysis of SnO2/CuO/rGO nanocomposites, XRD, UV-Vis DRS, SEM, TEM-EDAX, and XPS analysis were used to characterize the physicochemical properties of the material. The characterization results confirmed great crystallinity, purity, and optical characteristics features. For both Rhodamine B (RhB) and Reactive Red 120 (RR120) degradation processes, SnO2/CuO/rGO nanocomposites were tested for their photocatalytic degradation performance. The SnO2/CuO/rGO nanocomposites have expressed the degradation rate exposed to 99.6% of both RhB and RR120 dyes. The main reason behind the photocatalytic degradation was due to the formation of OH radical's generation by the composite materials. Moreover, the antibacterial properties of synthesized SnO2/CuO/rGO nanocomposites were studied against E. coli, S. aureus, B. subtilis and P. aeroginosa and exhibited good antibacterial activity against the tested bacterial strains. Thus, the synthesized SnO2/CuO/rGO nanocomposites are a promising photocatalyst and antibacterial agent. Furthermore, mechanisms behind the antibacterial effects will be ruled out in near future.
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Affiliation(s)
- Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia.
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia.
| | - Nassar N Asemi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - Majdoleen Aldawsari
- Department of Botany and Microbiology, Female Campus, College of Science, King Saud University, Riyadh, Saudi Arabia
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18
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AlSalhi MS, Devanesan S, Asemi N, Ahamed A. Concurrent fabrication of ZnO-ZnFe 2O 4 hybrid nanocomposite for enhancing photocatalytic degradation of organic pollutants and its bacterial inactivation. CHEMOSPHERE 2023; 318:137928. [PMID: 36706811 DOI: 10.1016/j.chemosphere.2023.137928] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/24/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
In this research, we looked at how heterostructure fabrication, phase ratio, and crystalline nature affect the photocatalytic activity of ZnO/ZnFe2O4 nanocomposite for the degradation of Rhodamine B (RhB) dye when exposed to sunlight irradiation. Magnetic ZnO/ZnFe2O4 hybrid nanocomposites were made using a co-precipitation technique. The synthesized hybrid nanocomposite were analyzed using a variety of characterization techniques to understand more about their chemical, crystallinity, and photoactive characteristics. Using UV-Visible spectra, the absorption and photocatalytic efficiency of photocatalysts were investigated. By using XPS and FTIR measurements, the surface composition and functionalization of the produced nanocomposite were observed. The synthesized ZnO/ZnFe2O4 nanocomposites exhibit irregular morphologies, and the average crystallite size is about 30 nm, by the findings of the transmission electron microscope. When exposed to solar light for 90 min, the prepared photocatalysts exceed ZnO nanoparticles in terms of photocatalytic performance by more than 45%. Pseudo-first-order kinetics governs the adsorption of RhB onto nanocomposite surfaces. Finally, the ZnO/ZnFe2O4 nanocomposites were employed for antibacterial treatments against the waterborne pathogens Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus). The outcomes demonstrated that the optimal disinfection efficiency against E. coli and S. aureus germs were 98.6 and 97.4%, respectively, associated with superior cycling durability. Therefore, this work offers a simple and rapid approach to the development of hybrid nanocomposites that could be used to create various photocatalytic and optical materials.
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Affiliation(s)
- Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
| | - Nassar Asemi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Anis Ahamed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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