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Yu J, Zhu F, Yang Y, Zhang P, Zheng Y, Chen H, Gao Y. Ultrasmall iron-doped zinc oxide nanoparticles for ferroptosis assisted sono-chemodynamic cancer therapy. Colloids Surf B Biointerfaces 2023; 232:113606. [PMID: 37898045 DOI: 10.1016/j.colsurfb.2023.113606] [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: 08/04/2023] [Revised: 10/03/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
The efficacy and biosafety of sonodynamic therapy (SDT) are closely related to the properties of sonosensitizers. Inorganic sonosensitizers with high chemical stability and low dark toxicity are generally limited by slow metabolism and accumulation in vivo. Combined treatment strategies by inducing more redox imbalance are expected to improve the efficacy of sonodynamic antitumor therapy. Herein, we report the development of ultra-small iron-doped zinc oxide nanoparticles (FZO NPs) to achieve synergistic sono-chemodynamic therapy and low accumulation in vivo. The surface of FZO NPs with diameter of 5 nm was modified with 3-aminopropyltriethoxysilane and polyethylene glycol 600 to obtain FZO-ASP with good aqueous stability. FZO-ASP with iron doping could trigger Fenton reaction and induce ferroptosis in cancer cells. With the assistance of ultrasonic energy, FZO-ASP demonstrated enhanced inhibitory effects on proliferation of various cancer cells and murine breast tumor growth than undoped counterpart. In addition, FZO-ASP injected intravenously could be effectively excreted in vivo and showed no obvious cumulative toxicity to the treated mice. Hence, this type of ultra-small iron-doped zinc oxide nanoparticles could serve as a safe and efficient sonosensitizer agent for synergistic sono-chemodynamic cancer therapy.
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Affiliation(s)
- Jing Yu
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China
| | - Fangyin Zhu
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China
| | - Ya Yang
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China
| | - Peixia Zhang
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China
| | - Yilin Zheng
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China
| | - Haijun Chen
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Yu Gao
- Cancer Metastasis Alert and Prevention Center, College of Chemistry, and Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou 350116, China.
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Oluseun Akintunde O, Hu J, Golam Kibria M, Pogosian S, Achari G. A facile synthesis process of GCN/ZnO-Cu nanocomposite and the evaluation of the performance for the photocatalytic degradation of organic pollutants and the disinfection of wastewater under visible light. CHEMOSPHERE 2023; 344:140287. [PMID: 37820879 DOI: 10.1016/j.chemosphere.2023.140287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
In this research, graphitic carbon nitride/zinc oxide-copper denoted as GCN/ZnO-Cu nanocomposite photocatalysts were synthesized using a novel facile synthesis process, the co-exfoliation method involving ultrasonic exfoliation of the mixture of GCN and ZnO-Cu in ethanol and then thermal exfoliation. Different characterization techniques such as X-ray diffraction (XRD), mean crystallite size (MCS), BET surface area, transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), particle size distribution (PSD), Fourier transform-infrared spectroscopy (FT-IR), photoluminescence (PL) spectra, and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) were conducted to study the crystallinity, morphology, elemental composition, chemical structure, and optoelectronic properties. The band gap was estimated using the UV-Vis DRS results and Tauc plots. The photocatalytic activity of the GCN/ZnO-Cu3% nanocomposites was evaluated in the degradation of 4-chlorophenol (4-CP), and the disinfection of wastewater primary influent under a narrowband visible light source, royal blue LED (λ = 450 nm). GCN/0.1ZnO-Cu3% nanocomposite showed the best performance in the degradation of 4-CP and the disinfection of municipal wastewater primary influent. For 4-CP degradation, GCN/0.1ZnO-Cu3% was 2.2 times better than GCN, 9.4 times better than ZnO-Cu3%, and 1.8 times better than the sum of the individual GCN and ZnO-Cu3%. A 5.5 log reduction was achieved for the disinfection of total coliforms in wastewater primary influent in 360 min. This enhanced photocatalytic activity of GCN/ZnO-Cu3% nanocomposite can be attributed to the synergistic of GCN and the ZnO-Cu3%, resulting in a large surface area and improved bandgap.
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Affiliation(s)
- Olufemi Oluseun Akintunde
- Department of Civil Engineering, University of Calgary, ENE 231, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, ENB 202, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Md Golam Kibria
- Department of Chemical and Petroleum Engineering, University of Calgary, ENB 202, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Samuel Pogosian
- Nemalux Industrial, 1018 72 Ave NE, Calgary, AB, T2E 8V9, Canada
| | - Gopal Achari
- Department of Civil Engineering, University of Calgary, ENE 231, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
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3
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O’Neill S, Robertson JMC, Héquet V, Chazarenc F, Pang X, Ralphs K, Skillen N, Robertson PKJ. Comparison of Titanium Dioxide and Zinc Oxide Photocatalysts for the Inactivation of Escherichia coli in Water Using Slurry and Rotating-Disk Photocatalytic Reactors. Ind Eng Chem Res 2023; 62:18952-18959. [PMID: 38020788 PMCID: PMC10655038 DOI: 10.1021/acs.iecr.3c00508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 12/01/2023]
Abstract
The application of photocatalysis for the disinfection of water has been extensively reported over the past 30 years. Titanium dioxide (TiO2) has been the most widely and successfully used photocatalyst to date; however, it is not without its limitations. Frequently observed long lag times, sometimes up to 60 min, before bacterial inactivation begins and the presence of residual microorganisms, for example, up to 104 colony forming units, remaining after treatment are ongoing challenges with this particular photocatalyst. It is therefore important to find alternative photocatalysts that can address these issues. In this study, we compared the disinfection capacity of TiO2 with that of zinc oxide (ZnO) using Escherichia coli as a model organism in both a suspended and immobilized catalyst system. Our results showed that ZnO was superior to TiO2 in a number of areas. Not only were bacterial rates of destruction much quicker with ZnO, but no lag time was observed prior to inactivation in suspended systems. Furthermore, complete bacterial destruction was observed within the treatment times under investigation. The greater efficiency of ZnO is believed to be due to the decomposition of the bacterial cell wall being driven by hydrogen peroxide as opposed to hydroxyl radicals. The results reported in this paper show that ZnO is a more efficient and cost-effective photocatalyst than TiO2 and that it represents a viable alternative photocatalyst for water disinfection processes.
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Affiliation(s)
- Sean O’Neill
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
- IMT
Atlantique, CNRS, GEPEA, UMR 6144, 4 rue Alfred Kastler, CS 20722, Nantes Cedex
3 44403, France
| | - Jeanette M. C. Robertson
- School
of Biological Sciences, Queen’s University
Belfast, Chlorine Gardens, Belfast BT9 5DL, Ireland
| | - Valérie Héquet
- IMT
Atlantique, CNRS, GEPEA, UMR 6144, 4 rue Alfred Kastler, CS 20722, Nantes Cedex
3 44403, France
| | - Florent Chazarenc
- Research
Unit REVERSAAL, Centre INRAE Lyon-Grenoble, Auvergne-Rhône-Alpes, 5 Rue de la Doua, CS 20244, Villeurbanne Cedex 69625, France
| | - Xinzhu Pang
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Kathryn Ralphs
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Nathan Skillen
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Peter K. J. Robertson
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
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4
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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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5
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Kurban M. Sulfur doping concentration effect on the electronic and structural properties of ZnO nanoparticles: Insights from DFTB calculations. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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6
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Kaushik M, Sarkar N, Singh A, Kumar P. Nanomaterials to address the genesis of antibiotic resistance in Escherichia coli. Front Cell Infect Microbiol 2023; 12:946184. [PMID: 36683704 PMCID: PMC9845789 DOI: 10.3389/fcimb.2022.946184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 12/08/2022] [Indexed: 01/05/2023] Open
Abstract
Escherichia is a genus of prokaryotic gram-negative bacteria which forms a vital component of the gut microbiota of homeotherms including humans. Many members of this genus are commensals and pathogenic strains, which are responsible for some of the most common bacterial infections and can be fatal, particularly in the case of newborns and children. The fecal matter in wastewater treatment plants serves as major environmental sinks for the accumulation of Escherichia. The rise in antibiotic pollution and the lateral gene exchange of antibiotic-resistant genes have created antibiotic-resistant Escherichia strains that are often called superbugs. Antibiotic resistance has reached a crisis level that nowadays existing antibiotics are no longer effective. One way of tackling this emerging concern is by using nanomaterials. Punitively, nanomaterials can be used by conjugating with antibodies, biomolecules, and peptides to reduce antibiotic usage, whereas, preventatively, they can be used as either nano-antimicrobial additives or nano-photocatalytic sheets to reduce the microbial population and target the superbugs of environmental Escherichia. In this review, we have explored the threat posed by pathogenic Escherichia strains in the environment, especially in the context of antibiotic-resistant strains. Along with this, we have discussed some nanomaterial-mediated strategies in which the problem can be addressed by using nanomaterials as nanophotocatalytics, antimicrobial additives, drugs, and drug conjugates. This review also presents a brief overview of the ecological threats posed by the overuse of nanomaterials which warrants a balanced and judicious approach to the problem.
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Affiliation(s)
- Mahima Kaushik
- Nano-Bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India,*Correspondence: Mahima Kaushik, ;
| | - Niloy Sarkar
- Nano-Bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India,Department of Environmental Studies, University of Delhi, Delhi, India
| | - Amit Singh
- Nano-Bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India,Department of Chemistry, University of Delhi, Delhi, India
| | - Pankaj Kumar
- Nano-Bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India,Department of Chemistry, University of Delhi, Delhi, India
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7
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Xie Y, Yin X, Jiao Y, Sun Y, Wang C. Visible-light-responsive photocatalytic inactivation of ofloxacin-resistant bacteria by rGO modified g-C 3N 4. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:63142-63154. [PMID: 35449335 DOI: 10.1007/s11356-022-20326-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
The visible light responsive graphitic nitride (g-C3N4) mediated photocatalysis has drawn extensive attention in water treatment field. Carbon doping could improve the photocatalytic activity of g-C3N4 in promoting charge separation efficiency, visible-light utilization, etc. In this paper, the g-C3N4 (as MC) was modified by barbituric acid (as MCB0.07) and further treated by reduced graphene oxide (rGO) (as n%GCN) and then applied to inactivate ofloxacin-resistant bacteria (OFLA) under light irradiation at UVA-visible wavelength. The results showed that the n%GCN presented strong photocatalytic activity when the GO mass ratio was 7.5% (as 7.5%GCN). The inactivation efficiencies of OFLA by MC, MCB0.07, and 7.5%GCN were 5.77 log, 8.48 log, and 8.25 log, respectively, under UVA-visible wavelength (λ > 305 nm), compared to 4.83 log, 5.56 log, and 6.08 log, respectively, within 16 h under visible wavelength (λ > 400 nm). The rGO-doping obviously improved the inactivation efficiency of MCB0.07 on OFLA under visible wavelength. Furthermore, the photoreactivation and dark repair phenomena of OFLA were examined after MC, MCB0.07, and 7.5%GCN treatment, respectively, and it was found that all approaches led to permanent damage to OFLA of which the regrowth was not observed after 24-48 h. Based on the quenching test, reactive oxygen species of O2-• and hole (h+) exhibited dominant roles in the photocatalytic inactivation of OFLA, which may result in oxidative stress and damage to the cell membrane. This study could shed light on the inactivation of OFLA under visible light radiation by rGO modified g-C3N4.
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Affiliation(s)
- Yuqian Xie
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Xiufeng Yin
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Yuzhu Jiao
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Yingxue Sun
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China.
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing, 100048, China.
| | - Chun Wang
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing, 100048, China
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8
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“Fe3+ modified zinc oxide nanomaterial as an efficient, multifaceted material for photocatalytic degradation of MB dye and ethanol gas sensor as part of environmental rectification”. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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High performing p-n system of CaFe2O4 coupled ZnO for synergetic degradation of Rhodamine B with white-light photocatalysis and bactericidal action. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104271] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Aftab S, Shabir T, Shah A, Nisar J, Shah I, Muhammad H, Shah NS. Highly Efficient Visible Light Active Doped ZnO Photocatalysts for the Treatment of Wastewater Contaminated with Dyes and Pathogens of Emerging Concern. NANOMATERIALS 2022; 12:nano12030486. [PMID: 35159832 PMCID: PMC8838892 DOI: 10.3390/nano12030486] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 01/27/2023]
Abstract
Water is obligatory for sustaining life on Earth. About 71% of the Earth’s surface is covered in water. However, only one percent of the total water is drinkable. The presence of contaminants in wastewater, surface water, groundwater, and drinking water is a serious threat to human and environmental health. Their toxic effects and resistance towards conventional water treatment methods have compelled the scientific community to search for an environmentally friendly method that could efficiently degrade toxic contaminants. In this regard, visible light active photocatalysts have proved to be efficient in eliminating a wide variety of water toxins. A plethora of research activities have been carried out and significant amounts of funds are spent on the monitoring and removal of water contaminants, but relatively little attention has been paid to the degradation of persistent water pollutants. In this regard, nanoparticles of doped ZnO are preferred options owing to their low recombination rate and excellent photocatalytic and antimicrobial activity under irradiation of solar light. The current article presents the roles of these nanomaterials for wastewater treatment from pollutants of emerging concern.
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Affiliation(s)
- Saima Aftab
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan;
| | - Tayyaba Shabir
- Department of Chemistry, Women University Multan, Multan 60000, Pakistan;
| | - Afzal Shah
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan;
- Correspondence: or (A.S.); (I.S.)
| | - Jan Nisar
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan;
| | - Iltaf Shah
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Correspondence: or (A.S.); (I.S.)
| | - Haji Muhammad
- Department of Chemistry, Federal Urdu University of Arts, Sciences and Technology, Karachi 75300, Pakistan;
| | - Noor S. Shah
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan;
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11
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Goyal B, Verma N, Kharewal T, Gahlaut A, Hooda V. Structural effects of nanoparticles on their antibacterial activity against multi-drug resistance. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2021.2025103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Bharti Goyal
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Neelam Verma
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Tannu Kharewal
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Anjum Gahlaut
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Vikas Hooda
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
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12
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Combined photocatalytic degradation of pollutants and inactivation of waterborne pathogens using solar light active α/β-Bi2O3. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Zheng W, Huang J, Li S, Ge M, Teng L, Chen Z, Lai Y. Advanced Materials with Special Wettability toward Intelligent Oily Wastewater Remediation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:67-87. [PMID: 33382588 DOI: 10.1021/acsami.0c18794] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Clean water resources are essential to our human society. Oil leakage has caused water contamination, which leads to serious shortage of clean water, environmental deterioration, and even increasing number of deaths. It is of great urgency to solve the oil-polluted water problems worldwide. Efficient oil/water separation, especially emulsified oil/water mixture separation, is widely used to mitigate water pollution issues. Recently, advanced materials with special wettability have been employed for oily wastewater remediation. Moreover, by endowing them with various intelligent functions, smart materials can effectively separate complex oil/water mixtures including extremely stable emulsions. In this review, oil/water separation mechanisms and various fabrication methods of special wettability separation materials are summarized. We highlight the special wettable materials with intelligent functions, including photocatalytic, self-healing, and switchable oil/water separation materials, which can achieve self-cleaning, self-healing, and efficient oily wastewater treatment. In each section, the acting mechanisms, fabricating technologies, representative studies, and separation efficiency are briefly introduced. Lastly, the challenges and outlook for oil/water separation based on the special wettability materials are discussed.
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Affiliation(s)
- Weiwei Zheng
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Jianying Huang
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Shuhui Li
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China
| | - Mingzheng Ge
- School of Textile & Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, Nantong University, Nantong 226019, P. R. China
| | - Lin Teng
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore
| | - Yuekun Lai
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China
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Paulkumar K, Jesi Reeta T, Emmanuel Joshua Jebasingh S, Mangalanagasundari S, Muthu K, Murugan K. Potential utilization of zinc nanoparticles for wastewater treatment. AQUANANOTECHNOLOGY 2021:437-466. [DOI: 10.1016/b978-0-12-821141-0.00026-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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15
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Solar Photocatalysis for Emerging Micro-Pollutants Abatement and Water Disinfection: A Mini-Review. SUSTAINABILITY 2020. [DOI: 10.3390/su122310047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This mini-review article discusses the critical factors that are likely to affect the performance of solar photocatalysis for environmental applications and, in particular, for the simultaneous degradation of emerging micro-pollutants and the inactivation of microbial pathogens in aqueous matrices. Special emphasis is placed on the control of specific operating factors like the type and the form of catalysts used throughout those processes, the intriguing role of the water matrix, and the composition of the microbial load of the sample in each case. The interplay among the visible responsive catalyst, the target pollutants/pathogens, including various types of microorganisms and the non-target water matrix species, dictates performance in an unpredictable and case-specific way. Case studies referring to lab and pilot-scale applications are presented to highlight such peculiarities. Moreover, current trends regarding the elimination of antibiotic-resistant bacteria and resistance genes by means of solar photocatalysis are discussed. The antibiotic resistance dispersion into the aquatic environment and how advanced photocatalytic processes can eliminate antibiotic resistance genes in microbial populations are documented, with a view to investigate the prospect of using those purification methods for the control-resistant microbial populations found in the environment. Understanding the interactions of the various water components (both inherent and target species) is key to the successful operation of a treatment process and its scaling up.
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16
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Li Y, Liao C, Tjong SC. Recent Advances in Zinc Oxide Nanostructures with Antimicrobial Activities. Int J Mol Sci 2020; 21:E8836. [PMID: 33266476 PMCID: PMC7700383 DOI: 10.3390/ijms21228836] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
This article reviews the recent developments in the synthesis, antibacterial activity, and visible-light photocatalytic bacterial inactivation of nano-zinc oxide. Polycrystalline wurtzite ZnO nanostructures with a hexagonal lattice having different shapes can be synthesized by means of vapor-, liquid-, and solid-phase processing techniques. Among these, ZnO hierarchical nanostructures prepared from the liquid phase route are commonly used for antimicrobial activity. In particular, plant extract-mediated biosynthesis is a single step process for preparing nano-ZnO without using surfactants and toxic chemicals. The phytochemical molecules of natural plant extracts are attractive agents for reducing and stabilizing zinc ions of zinc salt precursors to form green ZnO nanostructures. The peel extracts of certain citrus fruits like grapefruits, lemons and oranges, acting as excellent chelating agents for zinc ions. Furthermore, phytochemicals of the plant extracts capped on ZnO nanomaterials are very effective for killing various bacterial strains, leading to low minimum inhibitory concentration (MIC) values. Bioactive phytocompounds from green ZnO also inhibit hemolysis of Staphylococcus aureus infected red blood cells and inflammatory activity of mammalian immune system. In general, three mechanisms have been adopted to explain bactericidal activity of ZnO nanomaterials, including direct contact killing, reactive oxygen species (ROS) production, and released zinc ion inactivation. These toxic effects lead to the destruction of bacterial membrane, denaturation of enzyme, inhibition of cellular respiration and deoxyribonucleic acid replication, causing leakage of the cytoplasmic content and eventual cell death. Meanwhile, antimicrobial activity of doped and modified ZnO nanomaterials under visible light can be attributed to photogeneration of ROS on their surfaces. Thus particular attention is paid to the design and synthesis of visible light-activated ZnO photocatalysts with antibacterial properties.
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Affiliation(s)
- Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China;
| | - Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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Amde M, Temsgen A, Dechassa N. Ionic liquid functionalized zinc oxide nanorods for solid-phase microextraction of aflatoxins in food products. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Rahman APH, Dash S, Mohanty PS, Mishra A, Lundborg CS, Tripathy SK. Sonophotocatalytic disinfection of Shigella species under visible light irradiation: Insights into its molecular mechanism, antibacterial resistance and biofilm formation. ENVIRONMENTAL RESEARCH 2020; 187:109620. [PMID: 32416355 DOI: 10.1016/j.envres.2020.109620] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 04/25/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
Microbial contamination of water is one of the major sources of many diseases worldwide. Evolution of antibacterial resistance (ABR) alongside the caveats in most of the water treatment methods causes the severity of the current problem extremely vexing. This calls for an urgent need to develop new treatment methods aiming to reduce the microbial as well as ABR load in the environment. Herein, we successfully developed a visible light assisted sonophotocatalysis (SPC) using Fe/ZnO nanoparticles (NPs) for the disinfection of Shigella dysenteriae. A consortia containing S. dysenteriae and S. flexineri was also completely disinfected using SPC. Growth conditions of S. dysenteriae like growth phases and growth temperaturehad different outcomes on the overall efficacy of SPC. Compared with catalysts such as ZnO and TiO2, Fe/ZnO resulted in better disinfection. Multi-ROS production, mostly containing h+ and O2· radicals, due to the electron displacement in the catalyst and acoustic cavitation was identified as the factors behind bacterial lethality. The ROS produced was found to interfere with the metabolic activities of S. dysenteriae by causing membrane perturbation. We identified DNA damage inside the cells and the subsequent release of intracellular components. The compositional changes in the fatty acid makeup of the cells were altered as a result of SPC and few fatty acid markers indicating the stress posed by SPC were also identified. Loss of ABR in S. dysenteriae was also recorded post SPC treatment. Abatement in the biofilm forming ability of the injured bacterial cells was also recorded, proving the extremity of stress induced by SPC. Hence, the excellent efficacy of SPC in disinfecting bacteria is proposed for tertiary water treatment applications.
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Affiliation(s)
- A P Habeeb Rahman
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India; School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India
| | - Swagatika Dash
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India
| | - Priti Sundar Mohanty
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India
| | - Amrita Mishra
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India
| | | | - Suraj K Tripathy
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India; School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, Odisha, India.
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19
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Amde M, Yao J, Liu JF, Tan ZQ. Nano-selenium functionalized zinc oxide nanorods: A superadsorbent for mercury (II) removal from waters. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122495. [PMID: 32208313 DOI: 10.1016/j.jhazmat.2020.122495] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/18/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
In this study, nano selenium functionalized zinc oxide nanorods, NanoSe@ZnO-NR, was prepared, characterized and investigated for Hg(II) removal from waters of different types. The study results revealed that the material showed a superior adsorption capacity (qm, 1110 mg g-1) and excellent distribution coefficient (Kd, 9.11 × 108 mL g-1) which is two or more orders above most of the adsorbents reported in the literature. It should be also known that, 30 mg of the adsorbent can quickly reduce 10 mg L-1 Hg(II) to undetectable level from 10 mL of sample solution. The adsorption data were well explained with the pseudo-second order kinetic model and Langmuir adsorption isotherm model. Besides, the capturing capability of the material is independent on the pH change (2-12), selective against interfering cations, and exhibited fast kinetics (equilibrium time, ∼1 min). The NanoSe@ZnO-NR performance was also tested on real samples from different origin, surface waters (tap, lake and river) and wastewaters (effluent and influent), and complete removal and ≥99.2% removal efficiency was observed at 0.01 and 10 mg L-1 spiking levels, respectively. Therefore, NanoSe@ZnO-NR can be considered as a potential adsorbent in advancing the wastewater treatment technology.
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Affiliation(s)
- Meseret Amde
- School of Water Resource and Environment, Research Center of Environmental Sciences and Engineering, China University of Geosciences (Beijing), 100083, Beijing, China; Department of Chemistry, College of Natural and Computational Sciences, Haramaya University, Dire Dawa, Ethiopia
| | - Jun Yao
- School of Water Resource and Environment, Research Center of Environmental Sciences and Engineering, China University of Geosciences (Beijing), 100083, Beijing, China.
| | - Jing-Fu Liu
- State Key Laboratory of Eco-Toxicology and Environmental Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China.
| | - Zhi-Qiang Tan
- State Key Laboratory of Eco-Toxicology and Environmental Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China
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20
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Cai Y, Chen D, Li N, Xu Q, Li H, He J, Lu J. A Self-Cleaning Heterostructured Membrane for Efficient Oil-in-Water Emulsion Separation with Stable Flux. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001265. [PMID: 32406157 DOI: 10.1002/adma.202001265] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 04/03/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Lack of clean water is a major global challenge. Membrane separation technology is an ideal choice for the treatment of industrial, domestic sewage owing to its low energy consumption and cost. However, membranes are highly susceptible to contamination, particularly during wastewater treatment, which has limited their practical applications in this field. Similarly, the flux of the membrane decreases with prolonged use due to its reduced interlayer spacing. Preparation of membranes with anticontamination properties and stable flux is the key to addressing this problem. In this study, a 2D heterostructure membrane with visible-light-driven self-cleaning performance is prepared via a self-assembly process. Notably, the addition of palygorskite increases the interlayer spacing of the graphene and heterojunction structures, which increases the flux of the membrane and avoids a decrease of the interlayer spacing of the membrane under pressure. The presence of a heterojunction with visible light catalytic properties effectively avoids membrane fouling and avoids a sharp decrease of the permeation flux. Importantly, the prepared 2D membrane has excellent separation performance for oil-water emulsions with both high flux and efficiency. These features suggest great potential for the prepared 2D membrane in wastewater treatment applications.
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Affiliation(s)
- Yahui Cai
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Dongyun Chen
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Najun Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Qingfeng Xu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Hua Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Jinghui He
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Jianmei Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
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Affiliation(s)
- Rimzhim Gupta
- Department of Chemical EngineeringIndian Institute of Science Bangalore, Karnataka 560012 India
| | - Jayant Modak
- Department of Chemical EngineeringIndian Institute of Science Bangalore, Karnataka 560012 India
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22
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Designing Novel Photocatalysts for Disinfection of Multidrug-Resistant Waterborne Bacteria. NANOTECHNOLOGY FOR ENERGY AND ENVIRONMENTAL ENGINEERING 2020. [DOI: 10.1007/978-3-030-33774-2_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Zhang K, Meng W, Wang S, Mi H, Sun L, Tao K. One-step synthesis of ZnS@MoS2 core–shell nanostructure for high efficiency photocatalytic degradation of tetracycline. NEW J CHEM 2020. [DOI: 10.1039/c9nj04073k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four kinds of ZnS@MoS2 nanocomposite photocatalysts were successfully prepared via a facile hydrothermal method.
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Affiliation(s)
- Kejie Zhang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing
- China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Wei Meng
- Key Laboratory of Biomedical Functional Materials School of Science
- China Pharmaceutical University
- Nanjing 211198
- China
| | - Shouyu Wang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Hao Mi
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Lei Sun
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing
- China
| | - Kainan Tao
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing
- China
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24
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Kiran Kumar ABV, Billa S, Shankar EG, Subha MCS. C, N dual-doped ZnO nanofoams: a potential antimicrobial agent, an efficient visible light photocatalyst and SXAS studies. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:90-99. [PMID: 31868741 DOI: 10.1107/s160057751901364x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 10/05/2019] [Indexed: 06/10/2023]
Abstract
It is crucial to develop an environmentally friendly and low-cost method to treat industrial effluent that contains soluble dyes and microbes. Most of the photocatalysts have been studied using an external light source that increases the cost of the purification process of effluent. This study focuses on developing efficient solar photocatalytic nanofoams. The controlled growth of ZnO nanofoams (CNZ nanofoams) in a simple method of thermal oxidation using a soft template is reported. Prepared nanofoams are characterized using X-ray diffraction, scanning electon microscopy and synchrotron soft X-ray absorption spectroscopy. By photocatalysis studies under direct sunlight it was found that within 120 min CNZ nanofoams degraded 99% of the dye. In addition, antimicrobial studies of multi-drug-resistant E. Fergusonii isolated from wastewater was carried out. These antimicrobial results showed a good inhibition zone, indicating that prepared nanofoams are both an effective solar photocatalyst and an antimicrobial agent.
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Affiliation(s)
- A B V Kiran Kumar
- Amity Institute of Nanotechnology, Amity University, Sector 125, Noida, Uttar Pradesh 201301, India
| | - Sanjeev Billa
- Amity Institute of Nanotechnology, Amity University, Sector 125, Noida, Uttar Pradesh 201301, India
| | - Edugulla Girija Shankar
- Amity Institute of Nanotechnology, Amity University, Sector 125, Noida, Uttar Pradesh 201301, India
| | - M C S Subha
- Department of Chemistry, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh 515003, India
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Antimicrobials and Antimicrobial Resistance in the Environment and Its Remediation: A Global One Health Perspective. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16234614. [PMID: 31757109 PMCID: PMC6926838 DOI: 10.3390/ijerph16234614] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 01/22/2023]
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26
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Ugwuja CG, Adelowo OO, Ogunlaja A, Omorogie MO, Olukanni OD, Ikhimiukor OO, Iermak I, Kolawole GA, Guenter C, Taubert A, Bodede O, Moodley R, Inada NM, de Camargo ASS, Unuabonah EI. Visible-Light-Mediated Photodynamic Water Disinfection @ Bimetallic-Doped Hybrid Clay Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25483-25494. [PMID: 31268651 DOI: 10.1021/acsami.9b01212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study reports a new class of photocatalytic hybrid clay nanocomposites prepared from low-cost sources (kaolinite clay and Carica papaya seeds) doped with Zn and Cu salts via a solvothermal process. X-ray diffraction analysis suggests that Cu-doping and Cu/Zn-doping introduce new phases into the crystalline structure of Kaolinite clay, which is linked to the reduced band gap of kaolinite from typically between 4.9 and 8.2 eV to 2.69 eV for Cu-doped and 1.5 eV for Cu/Zn hybrid clay nanocomposites (Nisar, J.; Århammar, C.; Jämstorp, E.; Ahuja, R. Phys. Rev. B 2011, 84, 075120). In the presence of solar light irradiation, Cu- and Cu/Zn-doped nanocomposites facilitate the electron-hole pair separation. This promotes the generation of singlet oxygen which in turn improves the water disinfection efficiencies of these novel nanocomposite materials. The nanocomposite materials were further characterized using high-resolution scanning electron microscopy, fluorimetry, thermogravimetric analysis, and Raman spectroscopy. The breakthrough times of the nanocomposites for a fixed bed mode of disinfection of water contaminated with 2.32 × 107 cfu/mL E. coli ATCC 25922 under solar light irradiation are 25 h for Zn-doped, 30 h for Cu-doped, and 35 h for Cu/Zn-doped nanocomposites. In the presence of multidrug and multimetal resistant strains of E. coli, the breakthrough time decreases significantly. Zn-only doped nanocomposites are not photocatalytically active. In the absence of light, the nanocomposites are still effective in decontaminating water, although less efficient than under solar light irradiation. Electrostatic interaction, metal toxicity, and release of singlet oxygen (only in the Cu-doped and Cu/Zn-doped nanocomposites) are the three disinfection mechanisms by which these nanocomposites disinfect water. A regrowth study indicates the absence of any living E. coli cells in treated water even after 4 days. These data and the long hydraulic times (under gravity) exhibited by these nanocomposites during photodisinfection of water indicate an unusually high potential of these nanocomposites as efficient, affordable, and sustainable point-of-use systems for the disinfection of water in developing countries.
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Affiliation(s)
| | - Olawale O Adelowo
- Department of Microbiology , University of Ibadan , PMB 5116 , Ibadan , Oyo State 200284 , Nigeria
| | | | | | | | - Odion O Ikhimiukor
- Department of Microbiology , University of Ibadan , PMB 5116 , Ibadan , Oyo State 200284 , Nigeria
| | - Ievgeniia Iermak
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Gabriel A Kolawole
- Department of Chemistry , University of Zululand , Kwadlangezwa , 3886 , Republic of South Africa
| | | | | | - Olusola Bodede
- School of Chemistry and Physics , University of KwaZulu-Natal , Westville Campus , Durban , 3630 , South Africa
| | - Roshila Moodley
- School of Chemistry and Physics , University of KwaZulu-Natal , Westville Campus , Durban , 3630 , South Africa
| | - Natalia M Inada
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Andrea S S de Camargo
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Emmanuel I Unuabonah
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
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Immobilised Cerium-Doped Zinc Oxide as a Photocatalyst for the Degradation of Antibiotics and the Inactivation of Antibiotic-Resistant Bacteria. Catalysts 2019. [DOI: 10.3390/catal9030222] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The threat of antibiotic resistance to the wellbeing of societies is well established. Urban wastewater treatment plants (UWTPs) are recognised sources for antibiotic resistance dissemination in the environment. Herein a novel cerium-doped zinc oxide (Ce-ZnO) photocatalyst is compared to ZnO and the benchmark TiO2-P25 in the immobilised form on a metallic support, to evaluate a photocatalytic process as a possible tertiary treatment in UWTPs. The catalysts were compared for the removal of two antibiotics, trimethoprim (TMP) and sulfamethoxazole (SMX), and for the inactivation of Escherichia coli (E. coli) strain DH5-Alpha in isotonic sodium chloride solution and of autochthonous bacteria in real secondary wastewater. In real wastewater, E. coli and other coliforms were monitored, as well as the respective fractions resistant to ofloxacin and azithromycin. In parallel, Pseudomonas aeruginosa and the respective sub-population resistant to ofloxacin or ciprofloxacin were also monitored. Photocatalysis with both ZnO and Ce-ZnO was faster than using TiO2-P25 at degrading the antibiotics, with Ce-ZnO the fastest against SMX but slower than undoped ZnO in the removal of TMP. Ce-ZnO catalyst reuse in the immobilised form produced somewhat slower kinetics maintained >50% of the initial activity, even after five cycles of use. Approximately 3 log10 inactivation of E. coli in isotonic sodium chloride water was recorded with reproducible results. In the removal of autochthonous bacteria in real wastewater, Ce-ZnO performed better (more than 2 log values higher) than TiO2-P25. In all cases, E. coli and other coliforms, including their resistant subpopulations, were inactivated at a higher rate than P. aeruginosa. With short reaction times no evidence for enrichment of resistance was observed, yet with extended reaction times low levels of bacterial loads were not further inactivated. Overall, Ce-ZnO is an easy and cheap photocatalyst to produce and immobilise and the one that showed higher activity than the industry standard TiO2-P25 against the tested antibiotics and bacteria, including antibiotic-resistant bacteria.
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Bharat T, Shubham, Mondal S, S.Gupta H, Singh P, Das A. Synthesis of Doped Zinc Oxide Nanoparticles: A Review. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2019.03.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Das S, Ghosh S, Misra AJ, Tamhankar AJ, Mishra A, Lundborg CS, Tripathy SK. Sunlight Assisted Photocatalytic Degradation of Ciprofloxacin in Water Using Fe Doped ZnO Nanoparticles for Potential Public Health Applications. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E2440. [PMID: 30388857 PMCID: PMC6266230 DOI: 10.3390/ijerph15112440] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/27/2018] [Accepted: 10/29/2018] [Indexed: 11/24/2022]
Abstract
Antibiotic residues in the aquatic environment have the potential to induce resistance in environmental bacteria, which ultimately might get transferred to pathogens making treatment of diseases difficult and poses a serious threat to public health. If antibiotic residues in the environment could be eliminated or reduced, it could contribute to minimizing antibiotic resistance. Towards this objective, water containing ciprofloxacin was treated by sunlight-assisted photocatalysis using Fe- doped ZnO nanoparticles for assessing the degradation potential of this system. Parameters like pH, temperature, catalytic dosage were assessed for the optimum performance of the system. To evaluate degradation of ciprofloxacin, both spectrophotometric as well as microbiological (loss of antibiotic activity) methods were employed. 100 mg/L Fe-doped ZnO nanoparticle catalyst and sunlight intensity of 120,000⁻135,000 lux system gave optimum performance at pH 9 at 30 °C and 40 °C. Under these conditions spectrophotometric analysis showed complete degradation of ciprofloxacin (10 mg/L) at 210 min. Microbiological studies showed loss of antibacterial activity of the photocatalytically treated ciprofloxacin-containing water against Staphylococcus aureus (10⁸ CFU) in 60 min and for Escherichia coli (10⁸ CFU) in 75 min. The developed system, thus possess a potential for treatment of antibiotic contaminated waters for eliminating/reducing antibiotic residues from environment.
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Affiliation(s)
- Sourav Das
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Soumen Ghosh
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Ananyo Jyoti Misra
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Ashok J Tamhankar
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
- Department of Public Health Sciences, Karolinska Institutet, SE 17177 Stockholm, Sweden.
| | - Amrita Mishra
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | | | - Suraj K Tripathy
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
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30
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Misra AJ, Das S, Habeeb Rahman AP, Das B, Jayabalan R, Behera SK, Suar M, Tamhankar AJ, Mishra A, Lundborg CS, Tripathy SK. Doped ZnO nanoparticles impregnated on Kaolinite (Clay): A reusable nanocomposite for photocatalytic disinfection of multidrug resistant Enterobacter sp. under visible light. J Colloid Interface Sci 2018; 530:610-623. [PMID: 30005238 DOI: 10.1016/j.jcis.2018.07.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/05/2018] [Accepted: 07/05/2018] [Indexed: 11/27/2022]
Abstract
Water contamination by multidrug resistant (MDR) enteric bacteria can be considered as the foremost cause of gastrointestinal infections and poses a threat to global public health. Therefore, there is an urgent need to pursue unorthodox techniques with potential of community scale applications for purging of water borne pathogenic bacteria. We communicate visible-light assisted photocatalytic disinfection (PCD) of an enteric MDR bacterium; Enterobacter sp. using Fe-doped ZnO nanoparticles impregnated on Kaolinite (Clay) (ZnO/K). ZnO/K was synthesized by co-precipitation technique and was found to be more effective than Fe-doped ZnO (ZnO) and Kaolinite for PCD process. Analysis from fluorescence microscopy and electron microscopy (FESEM) proposed complete bacterial cell death via PCD due to damage of bacterial cell membrane. Experimental evidences indicated that O2- could be acting as the most significant component in disinfection of MDR Enterobacter sp. in visible-light assisted PCD process in presence of ZnO/K. Considering the experimental data of Resazurin assay, it is proposed that reactive oxygen species (ROS) generated during PCD might have impeded the oxido-reductase enzyme system of the bacteria and hence trammeling its metabolic activity. Crystal structure and particle size of ZnO/K was found to be unaltered during the photocatalytic process indicating its potential for reusability. When ZnO/K was exposed to HCT-116 Human Colorectal Carcinoma cell lines, about 79% cell survivability was noticed. The synthesized material was successful in completely disinfecting the target microorganism in Zebra Fish model, without producing any adverse effects on the Fish itself, further reinforcing its biocompatibility factor. High effectiveness of PCD process using ZnO/K under visible light in disinfecting enteric MDR bacteria, might have promising outcome as an alternative water disinfection technology to prevent the spread of infectious and resistant bacteria without producing any adverse effect on non-specific flora and fauna.
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Affiliation(s)
- Ananyo Jyoti Misra
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India
| | - Sourav Das
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India
| | - A P Habeeb Rahman
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India
| | - Bhaskar Das
- Department of Life Sciences, National Institute of Technology, Rourkela, India
| | - R Jayabalan
- Department of Life Sciences, National Institute of Technology, Rourkela, India
| | | | - Mrutyunjay Suar
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India
| | - Ashok J Tamhankar
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India; Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
| | - Amrita Mishra
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India
| | | | - Suraj K Tripathy
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India.
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Das B, Moumita S, Ghosh S, Khan MI, Indira D, Jayabalan R, Tripathy SK, Mishra A, Balasubramanian P. Biosynthesis of magnesium oxide (MgO) nanoflakes by using leaf extract of Bauhinia purpurea and evaluation of its antibacterial property against Staphylococcus aureus. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:436-444. [PMID: 30033274 DOI: 10.1016/j.msec.2018.05.059] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 03/22/2018] [Accepted: 05/17/2018] [Indexed: 01/11/2023]
Abstract
Nanobiotechnology has become a newly evolving field of interest in biomedical applications due to its biocompatibility and non-toxic nature towards the environment. Metal and metal oxide nanoparticles have been widely used as an antibacterial agent due to the emergence of antibiotic resistant pathogens, which leads to the outbreak of infectious diseases. In the present paper, biogenic synthesis of magnesium oxide (MgO) nanoflakes is reported by using Bauhinia purpurea leaf extract through alkaline precipitation method along with its detailed characterization. The average size of synthesized nanoflakes was found to be around 11 nm. Electron microscopy was used to investigate the morphology of the MgO nanoflakes. Additionally, the presence of antioxidants, phenolics and flavonoids in B. purpurea leaf extract has been studied by using different assays, which suggested the efficacy of leaf extract as a potential reducing agent for MgO nanoflakes synthesis. Antibacterial activity of synthesized MgO nanoflakes was investigated against Staphylococcus aureus, a gram positive bacteria known to cause various infections in humans. Results suggested the high efficacy of MgO nanoflakes as a potential antibacterial agent against S. aureus at meager dose size (250 μg/ml) and possible mode of action was investigated through surface morphology analysis of bacterial cells by field emission scanning electron microscopy.
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Affiliation(s)
- Bhaskar Das
- Bioenergy and Environmental Laboratory, Department of Biotechnology & Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Sahoo Moumita
- Food Microbiology and Bioprocess Laboratory, Department of Life Science, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Soumen Ghosh
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Md Imran Khan
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Dash Indira
- Food Microbiology and Bioprocess Laboratory, Department of Life Science, National Institute of Technology, Rourkela, Odisha 769008, India
| | - R Jayabalan
- Food Microbiology and Bioprocess Laboratory, Department of Life Science, National Institute of Technology, Rourkela, Odisha 769008, India.
| | - Suraj K Tripathy
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Amrita Mishra
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - P Balasubramanian
- Bioenergy and Environmental Laboratory, Department of Biotechnology & Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India.
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Taran M, Rad M, Alavi M. Biosynthesis of TiO 2 and ZnO nanoparticles by Halomonas elongata IBRC-M 10214 in different conditions of medium. BIOIMPACTS : BI 2017; 8:81-89. [PMID: 29977829 PMCID: PMC6026522 DOI: 10.15171/bi.2018.10] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 12/02/2017] [Accepted: 12/03/2017] [Indexed: 01/28/2023]
Abstract
Introduction: In the recent years, green synthesis is a novel method without some disadvantages of physical and chemical methods. In this approach, bacteria, archaebacteria, fungi, and plants may be applied without utilizing toxic and expensive materials for metal nanoparticles (MNPs) preparation. Methods: In this study, we used Taguchi method to obtain optimum conditions in titanium dioxide and zinc oxide nanoparticle (NPs) biosynthesis by Halomonas elongata IBRC-M 10214. Design and analysis of Taguchi experiments (an orthogonal assay and analysis of variance [ANOVA]) carried out by the Qualitek-4 software. Effects of TiO(OH)2, incubation temperature, and culturing time for synthesis of TiO2 NPs as well as ZnCl2 concentration, glucose concentration, and incubation temperature for the preparation of ZnO NPs were evaluated as the controllable factors with 3 levels. Characterization of TiO2 and ZnO NPs were determined by UV-Vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and dynamic light scattering (DLS) analysis. Also, the antimicrobial properties of these NPs were investigated based on agar diffusion assay of NPs dispersed in batch cultures using Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 43300 as multidrug-resistant (MDR) bacteria. Results: It was evaluated that TiO2 and ZnO NPs had respectively average diameter sizes of 104.63±27.75 and 18.11±8.93 nm with spherical shapes. In contrast to the TiO2 NPs without antibacterial activity, the ZnO NPs had antibacterial effects at 0.1 and 0.01 M of (ZnCl2). Conclusion: The ZnO NPs have the antibacterial effect that can be operative in the medicinal aspect for fighting against prominent MDR bacteria such as E. coli ATCC 25922 and S. aureus ATCC 43300. In total, this study presents a simple method in the biosynthesis of TiO2 and ZnO NPs with low the expense, eco-friendly, and high productivity properties.
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Affiliation(s)
| | | | - Mehran Alavi
- Microbiology Laboratory, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
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Affiliation(s)
| | - Ashok J Tamhankar
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
- Department of Environmental Medicine, RD Gardi Medical College, Ujjain, India
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Disinfection of the Water Borne Pathogens Escherichia coli and Staphylococcus aureus by Solar Photocatalysis Using Sonochemically Synthesized Reusable Ag@ZnO Core-Shell Nanoparticles. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14070747. [PMID: 28698514 PMCID: PMC5551185 DOI: 10.3390/ijerph14070747] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/03/2017] [Accepted: 07/05/2017] [Indexed: 11/30/2022]
Abstract
Water borne pathogens present a threat to human health and their disinfection from water poses a challenge, prompting the search for newer methods and newer materials. Disinfection of the Gram-negative bacterium Escherichia coli and the Gram-positive coccal bacterium Staphylococcus aureus in an aqueous matrix was achieved within 60 and 90 min, respectively, at 35 °C using solar-photocatalysis mediated by sonochemically synthesized Ag@ZnO core-shell nanoparticles. The efficiency of the process increased with the increase in temperature and at 55 °C the disinfection for the two bacteria could be achieved in 45 and 60 min, respectively. A new ultrasound-assisted chemical precipitation technique was used for the synthesis of Ag@ZnO core-shell nanoparticles. The characteristics of the synthesized material were established using physical techniques. The material remained stable even at 400 °C. Disinfection efficiency of the Ag@ZnO core-shell nanoparticles was confirmed in the case of real world samples of pond, river, municipal tap water and was found to be better than that of pure ZnO and TiO2 (Degussa P25). When the nanoparticle- based catalyst was recycled and reused for subsequent disinfection experiments, its efficiency did not change remarkably, even after three cycles. The sonochemically synthesized Ag@ZnO core-shell nanoparticles thus have a good potential for application in solar photocatalytic disinfection of water borne pathogens.
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