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Xin X, Liu M, Zhu P, Huang Z, Lu H. High-Visible Light Response AgNbO 3/Bi 2MoO 6/PANI Double Z-Scheme Heterojunction Photocatalytic Degradation of Antibiotics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:19751-19765. [PMID: 39215707 DOI: 10.1021/acs.langmuir.4c02487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
In this study, a novel AgNbO3/Bi2MoO6/PANI double Z-scheme heterojunction photocatalyst was created via a solvothermal method, and the method investigates its photocatalytic degradation performance toward norfloxacin (NOR) and other antibiotics. When the content of AgNbO3 is 5 wt % and the content of PANI is 1 wt %, the rate of degradation of AgNbO3/Bi2MoO6/PANI on NOR under visible light is 95.56%, the rate of removal of total organic carbon is ∼57.45%, and its pseudo-first-order reaction rate constant is 0.01878 min-1, which surpasses those of AgNbO3, Bi2MoO6, and AgNbO3/Bi2MoO6 by factors of 14.22, 2.46, and 1.35, respectively. At the same time, the AgNbO3/Bi2MoO6/PANI photocatalyst still showed good stability after three cycles. The results demonstrated that the augmented photocatalytic performance of AgNbO3/Bi2MoO6/PANI can be attributed to the formation of a double Z-scheme heterojunction and the incorporation of PANI with excellent conductivity, resulting in the higher efficiency of migration of charge carriers while retaining strong redox ability. This work affords a high-efficiency and environmentally friendly reference for the development of a Bi2MoO6-based heterojunction photocatalyst and its application in the purification of antibiotics in water.
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Affiliation(s)
- Xiya Xin
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Mei Liu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Pengfei Zhu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
- Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Zhaoxin Huang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Han Lu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
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Al Miad A, Saikat SP, Alam MK, Sahadat Hossain M, Bahadur NM, Ahmed S. Metal oxide-based photocatalysts for the efficient degradation of organic pollutants for a sustainable environment: a review. NANOSCALE ADVANCES 2024:d4na00517a. [PMID: 39258117 PMCID: PMC11382149 DOI: 10.1039/d4na00517a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Accepted: 08/14/2024] [Indexed: 09/12/2024]
Abstract
Photocatalytic degradation is a highly efficient technique for eliminating organic pollutants such as antibiotics, organic dyes, toluene, nitrobenzene, cyclohexane, and refinery oil from the environment. The effects of operating conditions, concentrations of contaminants and catalysts, and their impact on the rate of deterioration are the key focuses of this review. This method utilizes light-activated semiconductor catalysts to generate reactive oxygen species that break down contaminants. Modified photocatalysts, such as metal oxides, doped metal oxides, and composite materials, enhance the effectiveness of photocatalytic degradation by improving light absorption and charge separation. Furthermore, operational conditions such as pH, temperature, and light intensity also play a crucial role in enhancing the degradation process. The results indicated that both high pollutant and catalyst concentrations improve the degradation rate up to a threshold, beyond which no significant benefits are observed. The optimal operational conditions were found to significantly enhance photocatalytic efficiency, with a marked increase in degradation rates under ideal settings. Antibiotics and organic dyes generally follow intricate degradation pathways, resulting in the breakdown of these substances into smaller, less detrimental compounds. On the other hand, hydrocarbons such as toluene and cyclohexane, along with nitrobenzene, may necessitate many stages to achieve complete mineralization. Several factors that affect the efficiency of degradation are the characteristics of the photocatalyst, pollutant concentration, light intensity, and the existence of co-catalysts. This approach offers a sustainable alternative for minimizing the amount of organic pollutants present in the environment, contributing to cleaner air and water. Photocatalytic degradation hence holds tremendous potential for remediation of the environment.
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Affiliation(s)
- Abdullah Al Miad
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University Noakhali Bangladesh
| | - Shassatha Paul Saikat
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University Noakhali Bangladesh
| | - Md Kawcher Alam
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University Noakhali Bangladesh
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka-1205 Bangladesh
| | - Md Sahadat Hossain
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka-1205 Bangladesh
| | - Newaz Mohammed Bahadur
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University Noakhali Bangladesh
| | - Samina Ahmed
- Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka-1205 Bangladesh
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Chauhan A, Agnihotri S, Vasundhara M. Enhanced solar light-driven photocatalysis of norfloxacin using Fe-doped TiO 2: RSM optimization, DFT simulations, and toxicity study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47991-48013. [PMID: 39017867 DOI: 10.1007/s11356-024-34080-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/18/2024] [Indexed: 07/18/2024]
Abstract
This study investigates the photocatalytic degradation of norfloxacin (NFX) utilizing Fe-doped TiO2 nanocomposite under natural sunlight. TiO2-based photocatalysts were synthesized using chemical precipitation varying Fe-dopant concentration and characterized in detail. Theoretical modelling, centred on density functional theory (DFT), elucidated that Fe ions within the TiO2 lattice are effectively confined, thereby narrowing the wide band gap of TiO2. The findings strongly support that Fe3+ ions augmented the photocatalytic activity of TiO2 by facilitating an intermediate interfacial route for electron and hole transfer, particularly up to an optimal dopant concentration of 1.5 M%. Subsequently, a three-level Box-Behnken design (BBD) was developed to determine the initial pH, optimal catalyst concentration, and drug dosage. High-performance liquid chromatography-mass spectrometry (HPLC-MS) was employed to identify reaction intermediates, thereby establishing a potential degradation pathway. Notably, sustained recyclability was achieved, with 82% degradation efficiency maintained over five cycles. Additionally, the toxicity of degradation intermediates was evaluated through bacterial and phytotoxicity tests, affirming the environmental safety of treated water. In vitro toxicity of the nanomaterial was also examined, emphasizing its environmental implications. Scavenger experiments revealed that hole and hydroxyl radicals were the primary active species in Fe-TiO2-based photocatalysis. Furthermore, the antibacterial potential of the synthesized catalyst was assessed using Escherichia coli and Staphylococcus aureus to observe their respective antibacterial responses.
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Affiliation(s)
- Anjali Chauhan
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Bhadson Road, Patiala, 147004, Punjab, India
| | - Shekhar Agnihotri
- Department of Agriculture and Environmental Sciences, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonepat, Haryana, 131028, India.
- Centre for Advanced Translational Research in Food Nano-Biotechnology (CATR-FNB), National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonepat, Haryana, 131028, India.
| | - Mondem Vasundhara
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Bhadson Road, Patiala, 147004, Punjab, India
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El-Sayyad GS, Abd Elkodous M, El-Bastawisy HS, El Rouby WMA. Potential antibacterial, antibiofilm, and photocatalytic performance of gamma-irradiated novel nanocomposite for enhanced disinfection applications with an investigated reaction mechanism. BMC Microbiol 2023; 23:270. [PMID: 37752448 PMCID: PMC10521429 DOI: 10.1186/s12866-023-03016-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Water scarcity is now a global challenge due to the population growth and the limited amount of available potable water. In addition, modern industrialization, and microbial pathogenesis is resulting in water pollution on a large scale. METHODS In the present study, reusable Co0.5Ni0.5Fe2O4/SiO2/TiO2 composite matrix was incorporated with CdS NPs to develop an efficient photocatalyst, and antimicrobial agents for wastewater treatment, and disinfection purpose. The antibacterial performance of the gamma-irradiated samples was evaluated against various types of Gram-positive bacteria using ZOI, MIC, antibiofilm, and effect of UV-exposure. Antibacterial reaction mechanism was assessed by bacterial membrane leakage assay, and SEM imaging. In addition, their photocatalytic efficiency was tested against MB cationic dye as a typical water organic pollutant. RESULTS Our results showed that, the formed CdS NPs were uniformly distributed onto the surface of the nanocomposite matrix. While, the resulted CdS-based nanocomposite possessed an average particle size of nearly 90.6 nm. The antibacterial performance of the prepared nanocomposite was significantly increased after activation with gamma and UV irradiations. The improved antibacterial performance was mainly due to the synergistic effect of both TiO2 and CdS NPs; whereas, the highest photocatalytic efficiency of MB removal was exhibited in alkaline media due to the electrostatic attraction between the cationic MB and the negatively-charged samples. In addition, the constructed heterojunction enabled better charge separation and increased the lifetime of the photogenerated charge carriers. CONCLUSION Our results can pave the way towards the development of efficient photocatalysts for wastewater treatment and promising antibacterial agents for disinfection applications.
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Affiliation(s)
- Gharieb S El-Sayyad
- Drug Radiation Research Department, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - M Abd Elkodous
- Center for Nanotechnology (CNT), School of Engineering and Applied Science, Nile University, Sheikh Zayed, Giza, 16453, Egypt.
| | - Hanan S El-Bastawisy
- Drug Radiation Research Department, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Waleed M A El Rouby
- Material Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, 62511, Egypt
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Gill SS, Goyal T, Goswami M, Patel P, Das Gupta G, Verma SK. Remediation of environmental toxicants using carbonaceous materials: opportunity and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27364-9. [PMID: 37160511 DOI: 10.1007/s11356-023-27364-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 04/27/2023] [Indexed: 05/11/2023]
Abstract
Adsorption and photocatalytic properties of carbonaceous materials, viz., carbon nanotubes (CNTs), fullerene, graphene, graphene oxide, carbon nanofiber nanospheres, and activated carbon, are the legitimate weapons for the remediation of emerging and persistent inorganic/organic contaminants, heavy metals, and radionucleotides from the environment. High surface area, low or non-toxic nature, ease of synthesis, regeneration, and chemical modification of carbonaceous material make them ideal for the removal of toxicants. The research techniques investigated during the last decade for the elimination of environmental toxicants using carbonaceous materials are reviewed to offer comprehensive insight into the mechanism, efficiency, applications, advantages, and shortcomings. Opportunities and challenges associated with carbon materials have been discussed to suggest future perspectives in the remediation of environmental toxicants.
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Affiliation(s)
| | - Tanish Goyal
- ISF College of Pharmacy, Moga-142 001, Punjab, India
| | - Megha Goswami
- ISF College of Pharmacy, Moga-142 001, Punjab, India
| | - Preeti Patel
- ISF College of Pharmacy, Moga-142 001, Punjab, India
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Shan Z, Ma F, You S, Shan L, Kong D, Guo H, Cui C. Enhanced visible light photo-Fenton catalysis by lanthanum-doping BiFeO 3 for norfloxacin degradation. ENVIRONMENTAL RESEARCH 2023; 216:114588. [PMID: 36272595 DOI: 10.1016/j.envres.2022.114588] [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: 08/14/2022] [Revised: 09/25/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Efficient photo-Fenton removal of antibiotic effluent is a widely followed and significant attempt to deal with the growing environmental pollution. In this study, BiFeO3 and lanthanum doped BiFeO3 catalysts were synthesized via one-step hydrothermal method as hydrogen peroxide activator for mineralization of norfloxacin (NOR). Various characterization measurements were used to verify La was successfully doped into the lattice of perovskite and investigated the effect of La doping molar ratio on BiFeO3 through the characterization of the morphology and physicochemical properties. The degradation experiment and reaction rate constants showed that the La-doped BiFeO3 particle exhibited superior photo-Fenton catalytic performance to undoped BiFeO3. Especially, the degradation efficiency of 15% La-doped BiFeO3 could reach up to 84.94%. And the first order kinetic constant of optimized conditions was 0.01638 min-1, which was about 6.9 times than that of undoped BiFeO3.The influence of pH, oxidizer content and catalyst dosage in photo-Fenton reaction were investigated detailedly. Besides, the synthetic catalyst possessed favorable stability and reusability with little metal leaching after many cycles of use. Radical scavenger experiments and electron spin resonance tests were carried out to conclude that the ·OH and holes were regarded as the dominate active species in the catalytic process. The narrow band gap and excellent electron transfer efficiency were the key factors for La-doped BiFeO3 to have high catalytic efficiency in the photo-Fenton system. Current works demonstrated the great promise of La-doped BiFeO3 in the elimination of antibiotic organics.
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Affiliation(s)
- Zelin Shan
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Lianbin Shan
- Shenyang Academy of Environmental Sciences, Shenyang, 110167, PR China
| | - Deyong Kong
- Shenyang Academy of Environmental Sciences, Shenyang, 110167, PR China
| | - Haijuan Guo
- School of Environment, Liaoning University, Shenyang, 110036, PR China.
| | - Chongwei Cui
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
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Bharali L, Kalita J, Dhar SS, Moyon NS. Excellent Photocatalytic Activity of a Novel Hydroxyapatite Based Composite (ZnFe
2
O
4
/HAp‐Sn
2+
) Towards Degradation of Ofloxacin and Norfloxacin Antibiotics. ChemistrySelect 2022. [DOI: 10.1002/slct.202203487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Linkon Bharali
- Department of Chemistry National Institute of Technology Silchar Cachar Assam 788010 India
| | - Juri Kalita
- Department of Chemistry National Institute of Technology Silchar Cachar Assam 788010 India
| | - Siddhartha S. Dhar
- Department of Chemistry National Institute of Technology Silchar Cachar Assam 788010 India
| | - N. Shaemningwar Moyon
- Department of Chemistry National Institute of Technology Silchar Cachar Assam 788010 India
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8
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Roy N, Kannabiran K, Mukherjee A. Studies on photocatalytic removal of antibiotics, ciprofloxacin and sulfamethoxazole, by Fe3O4-ZnO-Chitosan/Alginate nanocomposite in aqueous systems. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Zhang Y, Chu W. Enhanced degradation of metronidazole by cobalt doped TiO2/sulfite process under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120900] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Jagadeesan D, Sompalli NK, Mohan AM, Rao CVSB, Nagarajan S, Deivasigamani P. ZrO 2-Ag 2O nanocomposites encrusted porous polymer monoliths as high-performance visible light photocatalysts for the fast degradation of pharmaceutical pollutants. Photochem Photobiol Sci 2022; 21:1273-1286. [PMID: 35384639 DOI: 10.1007/s43630-022-00218-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 03/23/2022] [Indexed: 11/27/2022]
Abstract
This work reports a unique ZrO2-Ag2O heterojunction nanocomposite uniformly dispersed on a macro-/meso-porous polymer monolithic template to serve as simple and effective visible light-driven heterogeneous plasmonic photocatalysts for water decontamination. The monolithic photocatalysts' structural properties and surface morphology are characterized using various surface and structural characterization techniques. The photocatalytic performance of the proposed photocatalysts is evaluated by optimizing multiple operational parameters. The photocatalytic properties of the fabricated monolithic nanocomposite are monitored through time-dependent photocatalytic disintegration of norfloxacin drug, a widely employed antimicrobial, with considerable aquatic persistence. The analytical results conclude that a (60:40) ZrO2-Ag2O nanocomposite embedded polymer monolith exhibits superior photocatalytic activity for the complete mineralization of norfloxacin molecules under optimized conditions of solution pH (3.0), photocatalyst quantity (100 mg), pollutant concentration (15 mg/L), photosensitizers (2.0 mM KBrO3), visible light intensity (300 W/cm2 tungsten lamp) and irradiation time (≤ 1 h). The proposed new-age inorganic-organic hybrid visible light photo-catalysts with superior structural and surface properties exhibit brilliant performance and fast responsiveness for water decontamination applications, in addition to their excellent chemical stability, high durability, multi-reusability, and cost-effectiveness.
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Affiliation(s)
- Dhivya Jagadeesan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - Naveen Kumar Sompalli
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - Akhila Maheswari Mohan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - C V S Brahmmananda Rao
- Homi Bhabha National Institute (HBNI), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, 603102, India
| | - Sivaraman Nagarajan
- Homi Bhabha National Institute (HBNI), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, 603102, India
| | - Prabhakaran Deivasigamani
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India.
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Cheng J, Wei N, Wang Y, Long Y, Fan G. Direct transformation of bulk cobalt foam into cobalt nanoparticles encapsulated in nitrogen-doped carbon nanotubes for peroxymonosulfate activation toward rhodamine B degradation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119441] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Promoted photocatalytic degradation and detoxication performance for norfloxacin on Z-scheme phosphate-doped BiVO4/graphene quantum dots/P-doped g-C3N4. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118692] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Yang J, Zhu W, Yao Q, Lu G, Yang C, Dang Z. Photochemical reactivity of nitrogen-doped biochars under simulated sunlight irradiation: Generation of singlet oxygen. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124547. [PMID: 33229271 DOI: 10.1016/j.jhazmat.2020.124547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
This study explored the photochemical activity of nitrogen-doped biochars (NCMs) by investigating their role in the degradation of sulfamethazine under simulated sunlight irradiation. NCMs with different doping amounts were prepared from corn straw and urea. Results showed that nitrogen doping can notably enhance the photodegradation of SMT rather than raw char. NCMs are of photochemical activity under visible light, which was confirmed by monochromatic light experiments. Quenching experiments, ESR, pH effect, and the influence of O2 were carried out to explore the involved oxidation mechanism in this system. Results showed that 1O2 was the main reactive oxygen species. 1O2 was produced from O2 by both energy transfer and electron transfer. DFT calculations showed that pyridinic N doping can decrease the energy of intersystem crossing and thus benefit the generation of 1O2 by triplet-triplet energy transfer. Results underscore the explicit importance of nitrogen element in photochemical reactivity of chars under simulated light irradiation even when the nitrogen content is low. It is a meaningful reminder for us to pay more attention to the assessment of the fate and transport of contaminants in the soil where it is rich in NCMs as well as the potential use of NCMs for pollutants remediation, since visible light is very abundant near the earth's surface.
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Affiliation(s)
- Jingjing Yang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Wen Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Qian Yao
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Guining Lu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China
| | - Chen Yang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China.
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China.
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Kaur R, Kaur A, Kaur R, Singh S, Bhatti MS, Umar A, Baskoutas S, Kansal SK. Cu-BTC metal organic framework (MOF) derived Cu-doped TiO2 nanoparticles and their use as visible light active photocatalyst for the decomposition of ofloxacin (OFX) antibiotic and antibacterial activity. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.02.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Gong H, Chu W, Huang Y, Xu L, Chen M, Yan M. Solar photocatalytic degradation of ibuprofen with a magnetic catalyst: Effects of parameters, efficiency in effluent, mechanism and toxicity evolution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116691. [PMID: 33601200 DOI: 10.1016/j.envpol.2021.116691] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
The environmental-friendly photocatalytic process with a magnetic catalyst CoFe2O4/TiO2 mediated by solar light for ibuprofen (IBP) degradation in pure water, wastewater effluent and artificial seawater was investigated systematically. The study aims to reveal the efficiency, the mechanism and toxicity evolution during IBP degradation. Hydroxyl radicals and photo-hole (h+) were found to contribute to the IBP decay. The presence of SO42- showed no significant effect, while NO3- accelerated the photodegradation, and other anions including HCO3-, Cl-, F-, and Br- showed significant inhibition. The removal efficiency was significantly elevated with the addition of peroxymonosulfate (PMS) or persulfate (PS) ([Oxidant]0:[IBP]0 = 0.4-4), with reaction rate of 5.3-13.1 and 1.3-2.9 times as high as the control group, respectively. However, the reaction was slowed down with the introduction of H2O2. A mathematic model was employed to describe the effect of ferrate, high concentration or stepwise addition of ferrate was suggested to play a positive role in IBP photodegradation. Thirteen transformation products were identified and five of them were newly reported. The degradation pathways including hydroxylation, the benzene ring opening and the oxidation of carbon were proposed. IBP can be efficiently removed when spiked in wastewater and seawater despite the decreased degradation rate by 41% and 56%, respectively. Compared to the IBP removal, mineralization was relatively lower. The adverse effect of the parent compound IBP to the green algae Chlorella vulgaris was gradually eliminated with the decomposition of IBP. The transformation product C178a which possibly posed toxicity to rotifers Brachionus calyciflorus can also be efficiently removed, indicating that the photocatalysis process is effective in IBP removal, mineralization and toxicity elimination.
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Affiliation(s)
- Han Gong
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Wei Chu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Yumei Huang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Lijie Xu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Meijuan Chen
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shan Xi, China
| | - Muting Yan
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China.
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Kar P, Shukla K, Jain P, Sathiyan G, Gupta RK. Semiconductor based photocatalysts for detoxification of emerging pharmaceutical pollutants from aquatic systems: A critical review. NANO MATERIALS SCIENCE 2021. [DOI: 10.1016/j.nanoms.2020.11.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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17
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Liu C, Liu L, Liu Y, Dang Z, Li C. Oxygen vacancy-induced donor–acceptor-conjugated microporous poly(triphenylamine–benzothiadiazole)/TiO2 as a Z-scheme heterojunction photocatalyst towards a visible-light-driven degradation of bisphenol A. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02184a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A Z-scheme TPABT/TiO2 heterostructure induced by oxygen vacancies exhibited high photocatalytic performance for the degradation of bisphenol A under visible light irradiation.
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Affiliation(s)
- Chenrui Liu
- Department of Environmental Science and Engineering
- College of Environment and Resources
- Xiangtan University
- Xiangtan
- China
| | - Lulu Liu
- Department of Environmental Science and Engineering
- College of Environment and Resources
- Xiangtan University
- Xiangtan
- China
| | - Yun Liu
- Department of Environmental Science and Engineering
- College of Environment and Resources
- Xiangtan University
- Xiangtan
- China
| | - Zhi Dang
- School of Environment and Energy
- South China University of Technology
- Guangzhou
- China
| | - Chengcheng Li
- Department of Environmental Science and Engineering
- College of Environment and Resources
- Xiangtan University
- Xiangtan
- China
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18
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J. Louw C, Hamnca S, G. L. Baker P. Voltammetric and Impedimetric Detection of Norfloxacin at Co Nanoparticle Modified Polymer Composite Electrodes. ELECTROANAL 2020. [DOI: 10.1002/elan.202060423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Clementine J. Louw
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
| | - Siyabulela Hamnca
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
| | - Priscilla G. L. Baker
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
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19
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Li J, Xia Z, Ma D, Liu G, Song N, Xiang D, Xin Y, Zhang G, Chen Q. Improving photocatalytic activity by construction of immobilized Z-scheme CdS/Au/TiO 2 nanobelt photocatalyst for eliminating norfloxacin from water. J Colloid Interface Sci 2020; 586:243-256. [PMID: 33162042 DOI: 10.1016/j.jcis.2020.10.088] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 12/21/2022]
Abstract
To improve the photocatalytic activity of TiO2 NBs under irradiation of solar light, an immobilized Z-scheme composite photocatalyst CdS/Au/TiO2 NBs has been constructed. For the unique architectures, the TiO2 NBs provide more absorption and reaction sites, the CdS nanoparticles enhance overall light harvesting, and Au acts as the electron transfer mediator, promoting the interfacial charge transfer and efficient separation of electrons and holes. The morphology, elements, crystal structure, optical and photoelectrochemical properties, and photocatalytic activity of CdS/Au/TiO2 NBs were characterized. Results showed that CdS/Au/TiO2 NBs possesses higher photocatalytic activity toward the degradation of antibiotic norfloxacin under irradiation of simulated sunlight, which is attributed to the synergetic interaction of increased light absorption and separation of photogenerated electrons and holes. Besides, the degradation of norfloxacin was promoted by HCO3-, but inhibited by NO3- and Cl-. The radicals trapping experiments proved that superoxide radicals (O2-) was the dominating active species during the photocatalysis process. The photocatalytic degradation products of norfloxacin was analyzed, and nine intermediates were identified. Moreover, the photocatalytic degradation mechanism and photostability of CdS/Au/TiO2 NBs were analyzed in detail. The matched energy levels and unique ternary Z-scheme design are the key for improved photocatalytic activity. The deactivation of CdS/Au/TiO2 NBs after recycles mainly due to the release of CdS by photocorrosion and the loss of deposited Au.
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Affiliation(s)
- Jingying Li
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Zhi Xia
- School of Food Science and Engineering, Harbin University of Commerce, Harbin 150076, PR China
| | - Dong Ma
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Guocheng Liu
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Ningning Song
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Dan Xiang
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Yanjun Xin
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Guodong Zhang
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China
| | - Qinghua Chen
- College of Resources and Environment, Qingdao Agricultural University, Qingdao Engineering Research Center for Rural Environment, Qingdao, PR China.
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20
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Lu YQ. Self-assembly and photocatalytic property of a new inorganic-organic hybrid material based on 1,4-bis(4-pyridylthio)butane. MAIN GROUP CHEMISTRY 2020. [DOI: 10.3233/mgc-200905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new hybrid compound consisting of 1,4-bis(4-pyridylthio)butane ([Bpytb]) ligand, namely {[Bpytb]Ag2I3}n (1), has been prepared and characterized by IR spectroscopy, solid UV-visible diffuse reflectance spectrum, X-ray Powder Diffraction (PXRD) and TG. Compound 1 consists of 1D anion chain structure. Crystal system: Monoclinic, Space group: P2/c, a = 4.5092(3), b = 11.1895(9), c = 21.3893(14), α= 90°, β= 92.907(2)°, γ= 90°, V = 1077.82(13) Å3, Z = 2, Dcalc = 2.693 g cm–3. The photocatalytic property of compound 1 was also studied and it exhibits a better degradation effect on organic dye MB.
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Affiliation(s)
- Yan-Qi Lu
- Department of Pharmacy, Zhengzhou Railway Vocational and Technical College, PR China
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21
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Wei Z, Liu J, Shangguan W. A review on photocatalysis in antibiotic wastewater: Pollutant degradation and hydrogen production. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63448-0] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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22
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Liu W, He T, Wang Y, Ning G, Xu Z, Chen X, Hu X, Wu Y, Zhao Y. Synergistic adsorption-photocatalytic degradation effect and norfloxacin mechanism of ZnO/ZnS@BC under UV-light irradiation. Sci Rep 2020; 10:11903. [PMID: 32681000 PMCID: PMC7368014 DOI: 10.1038/s41598-020-68517-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/25/2020] [Indexed: 11/09/2022] Open
Abstract
Norfloxacin (NOF) is an environmentally harmful and ubiquitous aquatic pollutant with extensive production and application. In this study, a novel composition named carbon-based composite photocatalytic material of zinc oxide and zinc sulphide (ZnO/ZnS@BC) was successfully obtained by the impregnation-roasting method to remove NOF under UV-light. Scanning electron microscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and energy dispersive spectrometer characterised the composition. ZnO/ZnS was successfully decorated on the surface of biochar (BC). The pH, the ZnSO4/PS ratio, and ions and quenchers, were investigated. High removal efficiency was obtained with a pH of 7 and a ZnSO4/PS ratio of 1:1, and the removal ratio of NOF reached 95% within three hours; the adsorption and degradation ratios reached 46% and 49%, respectively. Fe2+ promoted the degradation of NOF, whereas other ions inhibited it, with NO3- showing the strongest inhibitory effect. Three reactive species (tert-butanol, quinone, and ammonium oxala) were identified in the catalytic system. The decreasing order of the contribution of each reactive species was: O2- > ·OH- > h+. Additionally, a recycling experiment demonstrated the stability of the catalyst; the catalytic degradation ratio of NOF reached 78% after five successive runs. Therefore, ZnO/ZnS@BC possessed strong adsorption capacity and high ultraviolet photocatalysis ability.
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Affiliation(s)
- Wen Liu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Tianpei He
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Yonghong Wang
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Ge Ning
- International Education Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Zhenggang Xu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Xiaoyong Chen
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China.,College of Arts and Sciences, Governors State University, University Park, IL, 60484, USA
| | - Xinjiang Hu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Yaohui Wu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Yunlin Zhao
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China.
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23
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Wan L. Development, characterization and optical activity evaluation of three new benzimidazole compounds. MAIN GROUP CHEMISTRY 2020. [DOI: 10.3233/mgc-190885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Liyan Wan
- Anyang Vocational and Technical College, Anyang, P. R. China
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24
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Qiao GY, Huang WM, Li YY, Qiao XY, Zhu GH, Wu BL, Niu YY. Synthesis, structure and properties of two novel metallohelical compounds. MAIN GROUP CHEMISTRY 2020. [DOI: 10.3233/mgc-190887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Gui-Ying Qiao
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Wen-Ming Huang
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Yuan-Yuan Li
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Xiu-Ying Qiao
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Gai-Hong Zhu
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Ben-Lai Wu
- College of Chemistry, Zhengzhou University, Henan, P. R. China
| | - Yun-Yin Niu
- College of Chemistry, Zhengzhou University, Henan, P. R. China
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25
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Bi 2WO 6/C-Dots/TiO 2: A Novel Z-Scheme Photocatalyst for the Degradation of Fluoroquinolone Levofloxacin from Aqueous Medium. NANOMATERIALS 2020; 10:nano10050910. [PMID: 32397293 PMCID: PMC7279409 DOI: 10.3390/nano10050910] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 11/18/2022]
Abstract
Photocatalytic materials and semiconductors of appropriate structural and morphological architectures as well as energy band gaps are materials needed for mitigating current environmental problems, as these materials have the ability to exploit the full spectrum of solar light in several applications. Thus, constructing a Z-scheme heterojunction is an ideal approach to overcoming the limitations of a single component or traditional heterogeneous catalysts for the competent removal of organic chemicals present in wastewater, to mention just one of the areas of application. A Z-scheme catalyst possesses many attributes, including enhanced light-harvesting capacity, strong redox ability and different oxidation and reduction positions. In the present work, a novel ternary Z-scheme photocatalyst, i.e., Bi2WO6/C-dots/TiO2, has been prepared by a facile chemical wet technique. The prepared solar light-driven Z-scheme composite was characterized by many analytical and spectroscopic practices, including powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), N2 adsorption–desorption isotherm, Fourier-transform infrared spectroscopy (FT-IR), photoluminescence (PL) and UV-vis diffuse reflectance spectroscopy (DRS). The photocatalytic activity of the Bi2WO6/C-dots/TiO2 composite was evaluated by studying the degradation of fluoroquinolone drug, levofloxacin under solar light irradiation. Almost complete (99%) decomposition of the levofloxacin drug was observed in 90 min of sunlight irradiation. The effect of catalyst loading, initial substrate concentration and pH of the reaction was also optimized. The photocatalytic activity of the prepared catalyst was also compared with that of bare Bi2WO6, TiO2 and TiO2/C-dots under optimized conditions. Scavenger radical trap studies and terephthalic acid (TPA) fluorescence technique were done to understand the role of the photo-induced active radical ions that witnessed the decomposition of levofloxacin. Based on these studies, the plausible degradation trail of levofloxacin was proposed and was further supported by LC-MS analysis.
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26
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Ondon BS, Li S, Zhou Q, Li F. Simultaneous removal and high tolerance of norfloxacin with electricity generation in microbial fuel cell and its antibiotic resistance genes quantification. BIORESOURCE TECHNOLOGY 2020; 304:122984. [PMID: 32097778 DOI: 10.1016/j.biortech.2020.122984] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/03/2020] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
Norfloxacin (NFLX) is a synthetic antibiotic widely used in the treatment of infectious diseases. In this work, the performance of microbial fuel cells (MFCs) toward NFLX degradation, electricity production and the antibiotics resistances genes (ARGs) generation was investigated. NFLX degradation efficiency and COD removal reached 65.5% and 94.5% respectively. The increase in NFLX concentration (128 mg/L) had no significant influence on NFLX degradation efficiency, COD removal and MFCs voltage output while the electricity was successfully generated. The quantitative polymerase chain reaction (qPCR) indicated low absolute abundances of ARGs (mdtk, mdtm, and pmra) compared with the traditional wastewater treatment plants (WWTPs). Anodic bacteria can survive in the presence of high NFLX concentration and sustain its degradation and electricity production. In terms of NFLX degradation, COD removal, diminished ARGs generation and simultaneous energy production, MFC seems to be a promising technology for antibiotics wastewater treatment with a potential to overcome the ARGs challenge.
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Affiliation(s)
- Brim Stevy Ondon
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Shengnan Li
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Fengxiang Li
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China.
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27
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Bai J, Wu J, Li Z, Wang Z, Liu Z, Liu B, Mao Y, Guo Y, Wang X. Visible light-assisted NGO-Fe 3O 4 composite activated peroxydisulfate for degradation of oxytetracycline. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:813-823. [PMID: 32460284 DOI: 10.2166/wst.2020.164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A nitrogen-doped reduced graphene oxide/Fe3O4 composite (NGO-Fe3O4) was prepared through the simplified hydrothermal and deposition-precipitation method and characterized by X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy. The degradation efficiency of oxytetracycline (OTC) by NGO-Fe3O4 activated peroxodisulfate (PDS) under visible light irradiation was studied. The degradation efficiency reached 100% within 32.5 min (the initial OTC concentration 50 mg L-1 and PDS 1 mM; [NGO-Fe3O4]:[ PDS] = 4:1; pH = 3.0). No apparent decrease in degradation efficiency was observed after five cycles. SO4 -· and ·OH were the main active oxides for OTC degradation in this system. Moreover, four degradation pathways were proposed, namely hydroxylation, dehydration, decarbonylation and demethylation according to the analysis results of high-performance liquid chromatography mass spectrometry.
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Affiliation(s)
- Jing Bai
- School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China; Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Junfeng Wu
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Zhi Li
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Zhaodong Wang
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Zuwen Liu
- School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Biao Liu
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Yanli Mao
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Yifei Guo
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
| | - Xianli Wang
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China E-mail:
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28
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Montañés MT, García-Gabaldón M, Roca-Pérez L, Giner-Sanz JJ, Mora-Gómez J, Pérez-Herranz V. Analysis of norfloxacin ecotoxicity and the relation with its degradation by means of electrochemical oxidation using different anodes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109923. [PMID: 31711779 DOI: 10.1016/j.ecoenv.2019.109923] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 10/28/2019] [Accepted: 11/03/2019] [Indexed: 05/21/2023]
Abstract
In this work, ecotoxicological bioassays based on Lactuca sativa seeds and bioluminescent bacterium (Vibrio fischeri) have been carried out in order to quantify the toxicity of Norfloxacin (NOR) and sodium sulfate solutions, before and after treating them using electrochemical advanced oxidation. The effect of some process variables (anode material, reactor configuration and applied current) on the toxicity evolution of the treated solution has been studied. A NOR solution shows an EC50(5 days) of 336 mg L-1towards Lactuca sativa. This threshold NOR concentration decreases with sodium sulfate concentration, in solutions that contain simultaneously Norfloxacin and sodium sulfate. In every case considered in this work, the electrochemical advanced oxidation process increased the toxicity (towards both Lactuca sativa and Vibrio fischeri) of the solution. This toxicity increase is mainly due to the persulfate formation during the electrochemical treatment. From a final solution toxicity point of view, the best results were obtained using a BDD anode in a divided reactor applying the lowest current intensity.
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Affiliation(s)
- M T Montañés
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain.
| | - M García-Gabaldón
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - Ll Roca-Pérez
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - J J Giner-Sanz
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - J Mora-Gómez
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - V Pérez-Herranz
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, P.O. Box 22012, E-46071, Spain
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29
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Gholami P, Khataee A, Soltani RDC, Dinpazhoh L, Bhatnagar A. Photocatalytic degradation of gemifloxacin antibiotic using Zn-Co-LDH@biochar nanocomposite. JOURNAL OF HAZARDOUS MATERIALS 2020; 382:121070. [PMID: 31470301 DOI: 10.1016/j.jhazmat.2019.121070] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 05/27/2023]
Abstract
The aim of the present study was to investigate the photocatalytic performance of biochar (BC)-incorporated Zn-Co-layered double hydroxide (LDH) nanostructures in gemifloxacin (GMF) degradation as a model pharmaceutical pollutant. The as-prepared Zn-Co-LDH@BC showed high photocatalytic efficiency due to the enhanced separation of photo-generated charge carriers using cobalt hydroxide as well as inhibiting the agglomeration of LDH nanostructures by incorporation of BC. According to the results, 92.7% of GMF was degraded through photocatalysis in the presence of Zn-Co-LDH catalyst. The photocatalytic performance of BC-incorporated Zn-Co-LDH was highly dependent on the solute concentration and photocatalyst dosage. The addition of ethanol caused more inhibiting effect than that of benzoquinone (BQ), indicating the major role of •OH in decomposition of GMF compared to the negligible role of O2•-. A greater enhancement in the photocatalytic degradation of GMF was obtained when the photoreactor containing Zn-Co-LDH@BC nanostructures was oxygenated. Less than 10% drop in the removal efficiency of GMF was observed within five successive operational runs. The results of chemical oxygen demand (COD) analysis indicated the COD removal efficiency of about 80% within 200 min, indicating the acceptable mineralization of GMF. The reaction pathways were also proposed for the photocatalytic conversion of GMF under UV light irradiation.
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Affiliation(s)
- Peyman Gholami
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Health Promotion Research Center, Iran University of Medical Sciences, 1449614535, Tehran, Iran; Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey.
| | - Reza Darvishi Cheshmeh Soltani
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, 38196-93345, Arak, Iran
| | - Laleh Dinpazhoh
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
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30
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Li L, Yan Y, Liu H, Du J, Fu S, Zhao F, Xu SM, Zhou J. Hollow core/shell β-Bi2O3@WS2 p–n heterojunction for efficient photocatalytic degradation of fluoroquinolones: a theoretical and experimental study. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01594a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient visible-light-driven β-Bi2O3@WS2 p–n core–shell heterostructure was rationally designed using theoretical calculations and then fabricated via a facile self-assembly method.
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Affiliation(s)
- Li Li
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Yunhui Yan
- Department of Chemistry
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Haiping Liu
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Jinge Du
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Shuai Fu
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Fengying Zhao
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Si-Min Xu
- College of Chemistry
- Nankai University
- Tianjin 300071
- PR China
| | - Jianguo Zhou
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
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31
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Rocha ACDL, Kligerman DC, Oliveira JLDM. Panorama da pesquisa sobre tratamento e reúso de efluentes da indústria de antibióticos. SAÚDE EM DEBATE 2019. [DOI: 10.1590/0103-11042019s312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO Este trabalho realizou uma revisão integrativa de artigos científicos indexados entre 2007 e 2017 em diferentes bases de dados sobre o tratamento e o reúso de efluentes provenientes da indústria de antibióticos. Foram encontrados 31 artigos, sendo que somente 4 abordaram o reúso de efluente, e 1 utilizou um sistema de tratamento em escala real. A maior parte desses estudos foi realizado na Ásia, com destaque para a China. Observa-se que, no Brasil, que é um dos grandes produtores e consumidores de fármacos do mundo, esse tipo de pesquisa ainda é incipiente. Os processos mais encontrados foram os oxidativos avançados que mostraram maior eficiência na remoção de antibióticos, mas podem gerar subprodutos, o que pode representar um risco ainda maior dependendo da substância formada. Os processos biológicos devem ser primeiramente aclimatados aos antibióticos para não serem impactados, entretanto, a liberação desses micro-organismos resistentes no corpo receptor também apresenta um risco ambiental. Os sistemas integrados de membranas ao biológico também foram bem eficientes, mas atenta-se ao risco na destinação final dessas membranas que foram capazes de reter esses compostos. No geral, são necessários mais estudos sobre essa abordagem para reduzir os riscos no desenvolvimento de micro-organismos multirresistentes no meio ambiente.
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Jin X, Zhou X, Sun P, Lin S, Cao W, Li Z, Liu W. Photocatalytic degradation of norfloxacin using N-doped TiO 2: Optimization, mechanism, identification of intermediates and toxicity evaluation. CHEMOSPHERE 2019; 237:124433. [PMID: 31352100 DOI: 10.1016/j.chemosphere.2019.124433] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 05/21/2023]
Abstract
In this study, the photocatalytic degradation of Norfloxacin (NOR) has been studied using N-doped TiO2 (N-TiO2) under visible light irradiation, which was synthesized from a self-owned patent recipe and procedure. Subsequently, a three-factor five-level model, which was based on the central composite design (CCD), was developed to determine the optimal NOR concentration, N-TiO2 dosage, and initial pH in practical use. Meanwhile, the degradation pathway was identified by high-performance liquid chromatography-mass spectroscopy (HPLC-MS). Moreover, the toxicity of degradation intermediates was determined using the bacterium Escherichia coli so as to evaluate the health risk of the photocatalytic treated influent. The synthesized N-TiO2 nanoparticles were spherical, and the grain sizes were distributed from approximately 12 nm-20 nm, with a specific surface area of 148.52 m2/g. The light absorption is range from the ultraviolet region to the visible light region since the band gap was reduced to 2.92eV. It was demonstrated from the response surface method results that the initial NOR of 6.03 mg/L, N-TiO2 dose of 0.54 g/L, and pH of 6.37 could be the proposed optimal degradation conditions, which resulted in a 99.53% removal of NOR within 30 min under visible light irradiation. Two possible degradation pathways were proposed, including the replacement of F atoms by hydroxyl radicals, piperazinyl ring cleavage, hydroxylation, and decarboxylation. In the acute toxicity test, the toxicity declined 55% after photocatalytic treatment for 60 min. The results show the feasibility and novelty for photocatalytic treatment of antibiotics by N-TiO2 photocatalyst.
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Affiliation(s)
- Xindie Jin
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Xiaoqin Zhou
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing, 100083, PR China.
| | - Peng Sun
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Shuyao Lin
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Wenbin Cao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China; Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, PR China
| | - Zifu Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China
| | - Wenxiu Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China
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Investigation the High Photocatalytic Activity of Magnetically Separable Graphene Oxide Modified BiOBr Nanocomposites for Degradation of Organic Pollutants and Antibiotic. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01333-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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34
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New Evidence of the Enhanced Elimination of a Persistent Drug Used as a Lipid Absorption Inhibitor by Advanced Oxidation with UV-A and Nanosized Catalysts. Catalysts 2019. [DOI: 10.3390/catal9090761] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This work demonstrates new evidence of the efficient destruction and mineralization of an emergent organic pollutant using UV-A and titanium nanosized catalysts. The target compound considered in this work is the primary metabolite of a lipid regulator drug, clofibrate, identified in many studies as refractory during conventional wastewater treatment. The photocatalytic performance study was carried out in batch mode at laboratory scale, in aqueous suspension. Kinetic data showed that titanium dioxide P25 Aeroxide® exhibits the highest photocatalytic efficiency compared to the other investigated catalysts. Pollutant degradation and mineralization efficiencies strongly increased when decreasing the initial substrate concentration. Target molecules oxidized faster when the catalyst load increased, and the mineralization was enhanced under acidic conditions: 92% of mineralization was achieved at pH 4 after 190 min of reaction. Radical quenching assays confirmed that HO• and (
h
vb
+
)
were the reactive oxygen species involved in the photocatalytic oxidation of the considered pollutant. In addition, further results revealed that the removal efficiency decreased in real water matrices. Finally, data collected through a series of phytotoxicity tests demonstrated that the photocatalytic process considerably reduces the toxicity of the treated solutions, confirming the process’s effectiveness in the removal of persistent and biorefractory emergent organic water pollutants.
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Zhang G, Xue Y, Wang Q, Wang P, Yao H, Zhang W, Zhao J, Li Y. Photocatalytic oxidation of norfloxacin by Zn 0.9Fe 0.1S supported on Ni-foam under visible light irradiation. CHEMOSPHERE 2019; 230:406-415. [PMID: 31112863 DOI: 10.1016/j.chemosphere.2019.05.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/27/2019] [Accepted: 05/02/2019] [Indexed: 05/21/2023]
Abstract
Norfloxacin (NOR) is an emerging antibiotics contaminant due to its high resistance to microbial degradation and natural weathering. In this study, Fe-doped ZnS photocatalyst (Zn0.9Fe0.1S) was deposited on nickel foam (Ni-foam) to improve photocatalytic activity under visible light irradiation. The mass ratio of Zn0.9Fe0.1S and Ni-foam was optimized to be 0.03 g catalyst versus per g Ni-foam (0.03 Zn0.9Fe0.1S/Ni-foam), which led to the highest removal rate of 95%. The optimal degradation condition for NOR over 0.03 Zn0.9Fe0.1S/Ni-foam was pH at 7.0, initial NOR concentration of 5 mg L-1, and initial photocatalyst concentration of 11.7 g L-1, with the highest first-order reaction rate constant of 0.025 min-1 and mineralization rate of 63.1%. The NOR removal rate on 0.03 Zn0.9Fe0.1S/Ni-foam photocatalyst (95%) was approximately four times of that obtained on Zn0.9Fe0.1S photocatalyst (25%). The increased photocatalytic performance could be attributed to the function of Ni-foam as excellent electron collectors that provided efficient photoinduced charge separation from Zn0.9Fe0.1S. The reactive species responsible for the degradation of NOR were photo-generated holes, hydroxyl radical, and superoxide radicals. Nearly 90% of the photocatalytic efficiency was retained over seven cycles and the released metal ion concentrations were <0.3% of the total mass of photocatalyst, suggesting high stability of the photocatalyst during the photocatalytic reactions. The aqueous/solid mass transfer and intraparticle mass transfer for Zn0.9Fe0.1S/Ni-foam were not limiting factors for the degradation of NOR. Therefore the Zn0.9Fe0.1S/Ni-foam photocatalyst could be applied in the degradation of hazardous pollutants.
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Affiliation(s)
- Guangshan Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Yanei Xue
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Qiao Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Peng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Hong Yao
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, China.
| | - Wen Zhang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, China; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China; John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, 07102, USA.
| | - Jinbo Zhao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
| | - Yang Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
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Zhou J, Song L, Zhao X, Zhang S. Preparation, activity and photocatalysis mechanism of high‐performance AgBrO 3/AgBr photocatalysts. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Junqing Zhou
- School of Chemistry and Chemical Engineering & State Key Laboratory of Separation Membranes and Membrane Processes & Tianjin Key Laboratory of Green Chemical Technology and Process EngineeringTianjin Polytechnic University Tianjin 300387 China
| | - Limin Song
- School of Chemistry and Chemical Engineering & State Key Laboratory of Separation Membranes and Membrane Processes & Tianjin Key Laboratory of Green Chemical Technology and Process EngineeringTianjin Polytechnic University Tianjin 300387 China
| | - Xiaofei Zhao
- School of Chemistry and Chemical Engineering & State Key Laboratory of Separation Membranes and Membrane Processes & Tianjin Key Laboratory of Green Chemical Technology and Process EngineeringTianjin Polytechnic University Tianjin 300387 China
| | - Shujuan Zhang
- College of Basic SciencesTianjin Agricultural University Tianjin 300384 China
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Antibacterial Study of Gellan Gum (GG) Film Incorporated Norfloxacin. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.2.48] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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38
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Yu H, Zhang X, Zhao M, Zhang L, Dong H, Yu H. Norfloxacin degradation by a green carbon black-Ti/SnO2-Sb electrochemical system in saline water. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.04.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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39
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Recent Developments in the Photocatalytic Treatment of Cyanide Wastewater: An Approach to Remediation and Recovery of Metals. Processes (Basel) 2019. [DOI: 10.3390/pr7040225] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
For gold extraction, the most used extraction technique is the Merrill-Crow process, which uses lixiviants as sodium or potassium cyanide for gold leaching at alkaline conditions. The cyanide ion has an affinity not only for gold and silver, but for other metals in the ores, such as Al, Fe, Cu, Ni, Zn, and other toxic metals like Hg, As, Cr, Co, Pb, Sn, and Mn. After the extraction stage, the resulting wastewater is concentrated at alkaline conditions with concentrations up to 1000 ppm of metals. Photocatalysis is an advanced oxidation process (AOP) able to generate a photoreaction in the solid surface of a semiconductor activated by light. Although it is well known that photocatalytic processes can remove metals in solution, there are no compilations about the researches on photocatalytic removal of metals in wastewater with cyanide. Hence, this review comprises the existing applications of photocatalytic processes to remove metal and in some cases recover cyanide from recalcitrant wastewater from gold extraction. The use of this process, in general, requires the addition of several scavengers in order to force the mechanism to a pathway where the electrons can be transferred to the metal-cyanide matrices, or elsewhere the entire metallic cyanocomplex can be degraded by an oxidative pathway.
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40
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Wang X, Sun Y, Yang L, Shang Q, Wang D, Guo T, Guo Y. Novel photocatalytic system Fe-complex/TiO 2 for efficient degradation of phenol and norfloxacin in water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 656:1010-1020. [PMID: 30625633 DOI: 10.1016/j.scitotenv.2018.11.419] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/19/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Photocatalysis is one of the effective strategies to eliminate various organic pollutants in water body. In this paper we have prepared a series of new composite photocatalysts to degrade phenol and norfloxacin under visible light irradiation. They were [FeII(dpbpy)2(H2O)2]/TiO2, [FeII(dpbpy)(phen)2]/TiO2 and [FeII(dpbpy)(bpy)2]/TiO2 (dpbpy: 2,2'-bipyridine-4,4'-diphosphoric acid, phen: 1,10-phenanthroline, bpy: 2,2-bipyridyl). The results show that their photocatalytic performance and cyclic stability are much better than that of pure TiO2 or P25. Phenol can be degraded almost completely and the active groups or substituents of norfloxacin (NOR) can be destroyed also, which greatly reduced the biological toxicity of phenol and norfloxacin in water. The possible mechanisms of improving the photocatalytic activity and stability of TiO2 by using Fe-complex are proposed based on free radical capture test and density functional theory calculation. It is clearly that the interfacial interaction between Fe-complex and titanium dioxide directly affects the photocatalytic activity and stability of the composite photocatalyst. The conjugated structure of the complexes plays a crucial role.
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Affiliation(s)
- Xinyue Wang
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China; School of Environment, Northeast Normal University, Changchun 130024, PR China
| | - Yingnan Sun
- School of Environment, Northeast Normal University, Changchun 130024, PR China
| | - Lu Yang
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Qingkun Shang
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China.
| | - Dan Wang
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Tongtong Guo
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Yihang Guo
- School of Environment, Northeast Normal University, Changchun 130024, PR China.
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41
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Betancourt-Buitrago LA, Ossa-Echeverry OE, Rodriguez-Vallejo JC, Barraza JM, Marriaga N, Machuca-Martínez F. Anoxic photocatalytic treatment of synthetic mining wastewater using TiO2and scavengers for complexed cyanide recovery. Photochem Photobiol Sci 2019; 18:853-862. [DOI: 10.1039/c8pp00281a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new pathway for selective photocatalytic reduction using a combination of scavengers for gold mining wastewater treatment.
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Affiliation(s)
| | | | | | - J. M. Barraza
- Universidad del Valle
- Chemical Engineering School
- Cali
- Colombia
| | - N. Marriaga
- Universidad del Valle
- Chemical Engineering School
- Cali
- Colombia
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42
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Electrochemical degradation of norfloxacin using BDD and new Sb-doped SnO2 ceramic anodes in an electrochemical reactor in the presence and absence of a cation-exchange membrane. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.05.017] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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43
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Baoum AA, Amin MS, Mohamed RM. Decoration of SnO2 nanosheets by AgI nanoparticles driven visible light for norfloxacin degradation. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0890-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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44
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Peng Q, Ding Y, Zhu L, Zhang G, Tang H. Fast and complete degradation of norfloxacin by using Fe/Fe3C@NG as a bifunctional catalyst for activating peroxymonosulfate. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.049] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Enhancement of UV-assisted TiO2 degradation of ibuprofen using Fenton hybrid process at circumneutral pH. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(18)63070-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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46
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Gong H, Chu W. Permanganate with a double-edge role in photodegradation of sulfamethoxazole: Kinetic, reaction mechanism and toxicity. CHEMOSPHERE 2018; 191:494-502. [PMID: 29059556 DOI: 10.1016/j.chemosphere.2017.10.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/13/2017] [Accepted: 10/14/2017] [Indexed: 06/07/2023]
Abstract
In this study, the double-edge role of permanganate in sulfamethoxazole (SMX) photodegradation with a recyclable catalyst was revealed for the first time. The role of the catalyst under different UV wavelength, the role of permanganate in the treatment process, the effects of permanganate dosage and solution pH on the removal efficiency were investigated. Moreover, the transformation products, TOC reduction and the toxicity of the treated final product to Chlorella vulgaris and Artemia salina were determined. Sole permanganate showed no effect in SMX degradation, while its introduction to the photocatalytic process doubled the reaction rate at the optimal dosage. It is interesting to find that the reaction rate showed a fluctuation trend in terms of permanganate dosage due to the summation of positive effect of permanganate oxidation and the negative effect of the formed MnO2 at the surface of the catalyst, as well as the light attenuation due to overdosed permanganate. The determined intermediates, the higher inorganic ions release and TOC reduction provided a clue on a higher mineralization compared to SMX degradation in the same process without permanganate. Permanganate above 1 μM may pose a threat to the algae growth, therefore a good monitoring and control of residual permanganate dosage should be incorporated into the process design. A good toxicity reduction to A. salina was observed in the treated effluent; a longer detention is suggested for the complete removal of toxicity.
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Affiliation(s)
- Han Gong
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Wei Chu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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47
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Sharma S, Umar A, Mehta SK, Ibhadon AO, Kansal SK. Solar light driven photocatalytic degradation of levofloxacin using TiO2/carbon-dot nanocomposites. NEW J CHEM 2018. [DOI: 10.1039/c7nj05118b] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports the synthesis of TiO2 quantum dots, carbon dots (C-dots), and TiO2/C-dots using facile sol–gel and hydrothermal methods.
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Affiliation(s)
- Shelja Sharma
- Department of Chemistry and Centre of Advanced Studies
- Panjab University
- Chandigarh-160014
- India
| | - Ahmad Umar
- Department of Chemistry
- College of Science and Arts
- Najran University
- P. O. Box-1988
- Najran-11001
| | - Surinder Kumar Mehta
- Department of Chemistry and Centre of Advanced Studies
- Panjab University
- Chandigarh-160014
- India
| | - Alex O. Ibhadon
- Department of Chemical Engineering, University of Hull
- Hull
- UK
| | - Sushil Kumar Kansal
- Dr. S. S. Bhatnagar University Institute of Chemical Engineering and Technology
- Panjab University
- Chandigarh-160014
- India
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48
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Synchronic coupling of Cu2O(p)/CuO(n) semiconductors leading to Norfloxacin degradation under visible light: Kinetics, mechanism and film surface properties. J Catal 2017. [DOI: 10.1016/j.jcat.2017.06.036] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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49
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da Silva GTST, Carvalho KTG, Lopes OF, Gomes ES, Malagutti AR, Mastelaro VR, Ribeiro C, Mourão HAJL. Synthesis of ZnO Nanoparticles Assisted by N Sources and their Application in the Photodegradation of Organic Contaminants. ChemCatChem 2017. [DOI: 10.1002/cctc.201700756] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gelson T. S. T. da Silva
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Kele T. G. Carvalho
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Osmando F. Lopes
- Departamento de Química; Universidade Federal de São Carlos; Rodovia Washington Luiz, km 235 13.565-905 São Carlos SP Brazil
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Eliziana S. Gomes
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Andréa R. Malagutti
- Departamento de Farmácia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
| | - Valmor R. Mastelaro
- Instituto de Física de São Carlos; Universidade de São Paulo; Avenida Trabalhador São-carlense, 400 13566-590 São Carlos SP Brazil
| | - Caue Ribeiro
- Laboratório Nacional de Nanotecnologia para o Agronegócio; LNNA-Embrapa Instrumentação; Rua XV de Novembro, n° 1452 13.561-206 São Carlos SP Brazil
| | - Henrique A. J. L. Mourão
- Instituto de Ciência e Tecnologia; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Rodovia MGT 367, km 583 39.100-000 Diamantina MG Brazil
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50
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Laciste MT, de Luna MDG, Tolosa NC, Lu MC. Degradation of gaseous formaldehyde via visible light photocatalysis using multi-element doped titania nanoparticles. CHEMOSPHERE 2017; 182:174-182. [PMID: 28499178 DOI: 10.1016/j.chemosphere.2017.05.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 05/01/2017] [Accepted: 05/03/2017] [Indexed: 06/07/2023]
Abstract
This study developed a modified titanium dioxide photocatalyst doped with multi-element synthesized via sol-gel process to productize a novel photocatalyst. The study includes degradation of gaseous formaldehyde under visible light using the synthesized novel titanium dioxide photocatalyst. Varying molar ratios from 0 to 2 percent (%mole in titanium dioxide) of ammonium fluoride, silver nitrate and sodium tungstate as dopant precursors for nitrogen, fluorine, silver and tungsten were used. Photodegradation of gaseous formaldehyde was examined on glass tubular reactors illuminated with blue light emitting diodes (LEDs) using immobilized photocatalyst. The photocatalytic yield is analyzed based on the photocatalyst surface chemical properties via X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared (FTIR) Spectrophotometry, Brunauer-Emmett-Teller (BET) and X-ray Diffraction (XRD) characterization results. The applied modifications enhanced the visible light capability of the catalyst in comparison to the undoped catalyst and commercially available Degussa P-25, such that it photocatalytically degrades 88.1% of formaldehyde in 120 min. Synthesized titanium dioxide photocatalyst exhibits a unique spin orbital at 532.07 eV and 533.27 eV that came from the hybridization of unoccupied Ti d(t2g) levels.
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Affiliation(s)
- Maricris T Laciste
- Environmental Engineering Unit, College of Engineering, University of the Philippines, Diliman, Quezon City, 1101, Philippines; Research and Development Division, Environmental Management Bureau, Department of Environment and Natural Resources, Quezon City, 1101, Philippines
| | - Mark Daniel G de Luna
- Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City, 1101, Philippines
| | - Nolan C Tolosa
- Office for Research Promotion and Coordination, Malayan Colleges Laguna, Cabuyao, Laguna, 4025, Philippines
| | - Ming-Chun Lu
- Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Tainan, 71710, Taiwan.
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