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Zeng J, Desmond P, Ngo HH, Lin W, Liu X, Liu B, Li G, Ding A. Membrane modification in enhancement of virus removal: A critical review. J Environ Sci (China) 2024; 146:198-216. [PMID: 38969448 DOI: 10.1016/j.jes.2023.07.003] [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: 04/25/2023] [Revised: 07/04/2023] [Accepted: 07/04/2023] [Indexed: 07/07/2024]
Abstract
Many waterborne diseases are related with viruses, and COVID-19 worldwide has raised the concern of virus security in water into the public horizon. Compared to other conventional water treatment processes, membrane technology can achieve satisfactory virus removal with fewer chemicals, and prevent the outbreaks of viruses to a maximal extent. Researchers developed new modification methods to improve membrane performance. This review focused on the membrane modifications that enhance the performance in virus removal. The characteristics of viruses and their removal by membrane filtration were briefly generalized, and membrane modifications were systematically discussed through different virus removal mechanisms, including size exclusion, hydrophilic and hydrophobic interactions, electronic interactions, and inactivation. Advanced functional materials for membrane modification were summarized based on their nature. Furthermore, it is suggested that membranes should be enhanced through different mechanisms mainly based on their ranks of pore size. The current review provided theoretical support regarding membrane modifications in the enhancement of virus removal and avenues for practical application.
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Affiliation(s)
- Jie Zeng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Peter Desmond
- Institute of Environmental Engineering (ISA), RWTH Aachen University, Aachen 52056, Germany
| | - Huu Hao Ngo
- Faculty of Engineering, University of Technology Sydney, Sydney 2007, Australia
| | - Wei Lin
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiao Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Bingsheng Liu
- The Second Construction Co. Ltd. of China Construction Third Engineering Bureau, China
| | - Guibai Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - An Ding
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Norkaew S, Narikawa S, Nagashima U, Uemura R, Noda J. Efficacy of treating bacterial bioaerosols with weakly acidic hypochlorous water: A simulation chamber study. Heliyon 2024; 10:e26574. [PMID: 38434335 PMCID: PMC10907660 DOI: 10.1016/j.heliyon.2024.e26574] [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: 08/04/2023] [Revised: 01/25/2024] [Accepted: 02/15/2024] [Indexed: 03/05/2024] Open
Abstract
The COVID-19 pandemic highlighted the dangers of airborne transmission and the risks of pathogen-containing small airborne droplet inhalation as an infection route. As a pathogen control, Weakly Acidic Hypochlorous Water (WAHW) is used for surface disinfection. However, there are limited assessments of air disinfection by WAHW against airborne pathogens like bioaerosols. This was an empirical study evaluating the disinfection efficacy of WAHW in an atmospheric simulation chamber system against four selected model bacteria. The strains tested included Staphylococcus aureus (SA), Escherichia coli (EC), Pseudomonas aeruginosa (PA), and Pseudomonas aeruginosa (PAO1). Each bacterial solution was nebulized into the chamber system as the initial step, and bioaerosol was collected into the liquid medium by a bio-sampler for colony forming units (CFU) determination. Secondly, the nebulized bacterial bioaerosol was exposed to nebulized double distilled water (DDW) as the control and nebulized 150 ppm of WAHW as the experimental groups. After the 3 and 30-min reaction periods, the aerosol mixture inside the chamber was sampled in liquid media and then cultured on agar plates with different dilution factors to determine the CFU. Survival rates were calculated by a pre-exposed CFU value as a reference point. The use of WAHW decreased bacterial survival rates to 1.65-30.15% compared to the DDW control. PAO1 showed the highest survival rates and stability at 3 min was higher than 30 min in all experiments. Statistical analysis indicated that bacteria survival rates were significantly reduced compared to the controls. This work verifies the bactericidal effects against Gram-positive/negative bioaerosols of WAHW treatment. As WAHW contains chlorine in the acid solution, residual chlorine air concentration is a concern and the disinfection effect at different concentrations also requires investigation. Future studies should identify optimal times to minimize the treated time range and require measurements in a real environment.
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Affiliation(s)
- Saowanee Norkaew
- Faculty of Public Health, Thammasat University, Khlong Nueng, Klong Luang, Pathum Thani, 12121, Thailand
- Research Unit in Occupational Ergonomics, Thammasat University, Khlong Nueng, Klong Luang, Pathum Thani, 12121, Thailand
| | - Sumiyo Narikawa
- School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai-Midorimachi, Ebetsu, Hokkaido, 069-8501, Japan
| | - Ukyo Nagashima
- School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai-Midorimachi, Ebetsu, Hokkaido, 069-8501, Japan
| | - Ryoko Uemura
- Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, GakuenKibanadai-Nishi, Miyazaki, 889-2192, Japan
| | - Jun Noda
- School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai-Midorimachi, Ebetsu, Hokkaido, 069-8501, Japan
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Wei Y, Wang R, Wang M, Hu L, Zhang X, Xu Y, Liu Y, Lan F, Chen J. Research status and prospects of organic photocatalysts in algal inhibition and sterilization: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:5013-5031. [PMID: 38147259 DOI: 10.1007/s11356-023-31665-4] [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: 08/04/2023] [Accepted: 12/18/2023] [Indexed: 12/27/2023]
Abstract
An increasing amount of sewage has been discharged into water bodies in the progression of industrialization and urbanization, causing serious water pollution. Meanwhile, the increase of nutrients in the water induces water eutrophication and rapid growth of algae. Photocatalysis is a common technique for algal inhibition and sterilization. To improve the utilization of visible light and the conversion efficiency of solar energy, more organic photocatalytic materials have been gradually developed. In addition to ultraviolet light, partial infrared light and visible light could also be used by organic photocatalysts compared with inorganic photocatalysts. Simultaneously, organic photocatalysts also exhibit favorable stability. Most organic photocatalysts can maintain a high degradation rate for algae and bacteria after several cycles. There are various organic semiconductors, mainly including small organic molecules, such as perylene diimide (PDI), porphyrin (TCPP), and new carbon materials (fullerene (C60), graphene (GO), and carbon nanotubes (CNT)), and large organic polymers, such as graphite phase carbon nitride (g-C3N4), polypyrrole (PPy), polythiophene (PTH), polyaniline (PANI), and polyimide (PI). In this review, the classification and synthesis methods of organic photocatalytic materials were elucidated. It was demonstrated that the full visible spectral response (400-750 nm) could be stimulated by modifying organic photocatalysts. Moreover, some problems were summarized based on the research status related to algae and bacteria, and corresponding suggestions were also provided for the development of organic photocatalytic materials.
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Affiliation(s)
- Yushan Wei
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Renjun Wang
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Mengjiao Wang
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Lijun Hu
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Xinyi Zhang
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Yuling Xu
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Yanyan Liu
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Feng Lan
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China
| | - Junfeng Chen
- School of Life Sciences, Qufu Normal University, Qufu, 273165, People's Republic of China.
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Tong J, Zhai H, Zhao S, Song L, Wang G, Feng N, Tan P, Xie J, Pan J. Visible light-driven sliver-modified titanium dioxide / bismuth molybdenum oxide with rapid interfacial charge-transfer for dual highly efficient photocatalytic degradation and disinfection. J Colloid Interface Sci 2024; 653:285-295. [PMID: 37717429 DOI: 10.1016/j.jcis.2023.09.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/25/2023] [Accepted: 09/10/2023] [Indexed: 09/19/2023]
Abstract
Enhancing interfacial charge transfer is a promising approach to improve the efficiency of photocatalysts. This research effectively exploited an Ag-modified Z-scheme TiO2/Bi2MoO6 heterojunction for photocatalytic degradation and disinfection under visible light. The catalyst was fabricated using simple hydrothermal and photo-deposition methods, and the characterization outcomes revealed that a built-in electric field (BIEF) was generated in the TiO2/Bi2MoO6 heterojunctions, which significantly promotes the separation of photogenerated carriers and increases light absorption efficiency. Besides, the theoretical calculation demonstrated that electron migration between TiO2 and Ag resulted in a strong coupling on the surface, which serves as the foundation for driving photoelectric charge transfer. Furthermore, the TiO2/Bi2MoO6/Ag-45 displayed 459% and 512% higher degradation efficiency of tetracycline hydrochloride (TC-HCl) and ciprofloxacin (CIP) after 100 min compared to pristine TiO2. Moreover, the complexes wholly inactivated gram-negative Escherichia coli (E. coli) and significantly inhibited the growth of gram-positive Staphylococcus albus (S. albus) after 200 min. Additionally, we have deduced the potential degradation pathways of TC-HCl and CIP and photocatalytic mechanisms. The research results provide an idea to solve the problems of limited light absorption range and rapid carrier combination speed of traditional photocatalytic materials, which is expected to be applied in the field of actual wastewater treatment.
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Affiliation(s)
- Jiaxin Tong
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
| | - Huanhuan Zhai
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
| | - Shuguang Zhao
- Shenzhen Yonker Water Services Co., Ltd, Shenzhen 518000, China
| | - Leshan Song
- Shenzhen Yonker Water Services Co., Ltd, Shenzhen 518000, China
| | - Guozhen Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Ningning Feng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Pengfei Tan
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Jianping Xie
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
| | - Jun Pan
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
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Ran B, Ran L, Wang Z, Liao J, Li D, Chen K, Cai W, Hou J, Peng X. Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications. Chem Rev 2023; 123:12371-12430. [PMID: 37615679 DOI: 10.1021/acs.chemrev.3c00326] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Nowadays, the increasing emergence of antibiotic-resistant pathogenic microorganisms requires the search for alternative methods that do not cause drug resistance. Phototherapy strategies (PTs) based on the photoresponsive materials have become a new trend in the inactivation of pathogenic microorganisms due to their spatiotemporal controllability and negligible side effects. Among those phototherapy strategies, photocatalytic antimicrobial therapy (PCAT) has emerged as an effective and promising antimicrobial strategy in recent years. In the process of photocatalytic treatment, photocatalytic materials are excited by different wavelengths of lights to produce reactive oxygen species (ROS) or other toxic species for the killing of various pathogenic microbes, such as bacteria, viruses, fungi, parasites, and algae. Therefore, this review timely summarizes the latest progress in the PCAT field, with emphasis on the development of various photocatalytic antimicrobials (PCAMs), the underlying antimicrobial mechanisms, the design strategies, and the multiple practical antimicrobial applications in local infections therapy, personal protective equipment, water purification, antimicrobial coatings, wound dressings, food safety, antibacterial textiles, and air purification. Meanwhile, we also present the challenges and perspectives of widespread practical implementation of PCAT as antimicrobial therapeutics. We hope that as a result of this review, PCAT will flourish and become an effective weapon against pathogenic microorganisms and antibiotic resistance.
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Affiliation(s)
- Bei Ran
- Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu 610064, P. R. China
| | - Lei Ran
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
- Ability R&D Energy Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Zuokai Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jinfeng Liao
- West China Hospital of Stomatology Sichuan University, Chengdu 610064, P. R. China
| | - Dandan Li
- West China Hospital of Stomatology Sichuan University, Chengdu 610064, P. R. China
| | - Keda Chen
- Ability R&D Energy Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Wenlin Cai
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jungang Hou
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
- State Key Laboratory of Fine Chemicals, College of Material Science and Engineering, Shenzhen University, Shenzhen 518071, P. R. China
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Ouyang H, Wang L, Sapkota D, Yang M, Morán J, Li L, Olson BA, Schwartz M, Hogan CJ, Torremorell M. Control technologies to prevent aerosol-based disease transmission in animal agriculture production settings: a review of established and emerging approaches. Front Vet Sci 2023; 10:1291312. [PMID: 38033641 PMCID: PMC10682736 DOI: 10.3389/fvets.2023.1291312] [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: 09/08/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023] Open
Abstract
Transmission of infectious agents via aerosols is an ever-present concern in animal agriculture production settings, as the aerosol route to disease transmission can lead to difficult-to-control and costly diseases, such as porcine respiratory and reproductive syndrome virus and influenza A virus. It is increasingly necessary to implement control technologies to mitigate aerosol-based disease transmission. Here, we review currently utilized and prospective future aerosol control technologies to collect and potentially inactivate pathogens in aerosols, with an emphasis on technologies that can be incorporated into mechanically driven (forced air) ventilation systems to prevent aerosol-based disease spread from facility to facility. Broadly, we find that control technologies can be grouped into three categories: (1) currently implemented technologies; (2) scaled technologies used in industrial and medical settings; and (3) emerging technologies. Category (1) solely consists of fibrous filter media, which have been demonstrated to reduce the spread of PRRSV between swine production facilities. We review the mechanisms by which filters function and are rated (minimum efficiency reporting values). Category (2) consists of electrostatic precipitators (ESPs), used industrially to collect aerosol particles in higher flow rate systems, and ultraviolet C (UV-C) systems, used in medical settings to inactivate pathogens. Finally, category (3) consists of a variety of technologies, including ionization-based systems, microwaves, and those generating reactive oxygen species, often with the goal of pathogen inactivation in aerosols. As such technologies are typically first tested through varied means at the laboratory scale, we additionally review control technology testing techniques at various stages of development, from laboratory studies to field demonstration, and in doing so, suggest uniform testing and report standards are needed. Testing standards should consider the cost-benefit of implementing the technologies applicable to the livestock species of interest. Finally, we examine economic models for implementing aerosol control technologies, defining the collected infectious particles per unit energy demand.
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Affiliation(s)
- Hui Ouyang
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, United States
- Department of Mechanical Engineering, University of Texas-Dallas, Richardson, TX, United States
| | - Lan Wang
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN, United States
| | - Deepak Sapkota
- Department of Mechanical Engineering, University of Texas-Dallas, Richardson, TX, United States
| | - My Yang
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN, United States
| | - José Morán
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Li Li
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Bernard A. Olson
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Mark Schwartz
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN, United States
- Schwartz Farms, Sleepy Eye, MN, United States
| | - Christopher J. Hogan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Montserrat Torremorell
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN, United States
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Kuspanov Z, Baglan B, Baimenov A, Issadykov A, Yeleuov M, Daulbayev C. Photocatalysts for a sustainable future: Innovations in large-scale environmental and energy applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 885:163914. [PMID: 37149164 DOI: 10.1016/j.scitotenv.2023.163914] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/12/2023] [Accepted: 04/29/2023] [Indexed: 05/08/2023]
Abstract
The growing environmental and energy crises have prompted researchers to seek new solutions, including large-scale photocatalytic environmental remediation and the production of solar hydrogen using photocatalytic materials. To achieve this goal, scientists have developed numerous photocatalysts with high efficiency and stability. However, the large-scale application of photocatalytic systems under real-world conditions is still limited. These limitations arise at every step, including the large-scale synthesis and deposition of photocatalyst particles on a solid support, and the development of an optimal design with high mass transfer and efficient photon absorption. The purpose of this article is to provide a detailed description of the primary challenges and potential solutions encountered in scaling up photocatalytic systems for use in large-scale water and air purification and solar hydrogen production. Additionally, based on a review of current pilot developments, we draw conclusions and make comparisons regarding the main operating parameters that affect performance, as well as propose strategies for future research.
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Affiliation(s)
- Zhengisbek Kuspanov
- Satbayev University, 050013 Almaty, Kazakhstan; Institute of Nuclear Physics, 050032 Almaty, Kazakhstan; Joint Institute for Nuclear Research, 141980 Dubna, Russian Federation
| | - Bakbolat Baglan
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan; Al Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - Alzhan Baimenov
- Al Farabi Kazakh National University, 050040 Almaty, Kazakhstan; National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Aidos Issadykov
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan; National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Mukhtar Yeleuov
- Satbayev University, 050013 Almaty, Kazakhstan; Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
| | - Chingis Daulbayev
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan; National Laboratory Astana, Nazarbayev University, 010000 Astana, Kazakhstan.
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Park DH, An SH, Lee Y, Kim YJ, Han B, Kim HJ. Development of On-Demand Antiviral Electrostatic Precipitators with Electrothermal-Based Antiviral Surfaces against Airborne Virus Particles. TOXICS 2022; 10:601. [PMID: 36287881 PMCID: PMC9609375 DOI: 10.3390/toxics10100601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Particulate matter, including airborne pathogens, is of particular concern because it can cause the spread of diseases through aerosol transmission. In this study, a new concept is proposed: on-demand antiviral electrostatic precipitators (ESPs) with electrothermal-based antiviral surfaces. We applied electrothermal-based antiviral surfaces to air-purifying applications and demonstrated that the proposed method is effective with regard to collecting airborne virus particles on collection plates in a two-stage ESP. With alternating current power, MS2 bacteriophage and H1N1 viruses were completely deactivated after exposure to 50 °C for 30 min. This remarkable antiviral performance via electrothermal effects indicates that on-demand platforms for self-antiviral surfaces can perform sterilization immediately without generating secondary pollutants, thus effectively preventing the spread of infectious microorganisms in public places. We believe that the results of this study can provide useful guidelines for the design and realization of practical and wearable devices for antiviral air-purifying applications.
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Affiliation(s)
- Dae Hoon Park
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
| | - So-Hee An
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
| | - Yeawan Lee
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
| | - Yong-Jin Kim
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
| | - Bangwoo Han
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
| | - Hak-Joon Kim
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
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Prakash J, Krishna SBN, Kumar P, Kumar V, Ghosh KS, Swart HC, Bellucci S, Cho J. Recent Advances on Metal Oxide Based Nano-Photocatalysts as Potential Antibacterial and Antiviral Agents. Catalysts 2022; 12:1047. [DOI: 10.3390/catal12091047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023] Open
Abstract
Photocatalysis, a unique process that occurs in the presence of light radiation, can potentially be utilized to control environmental pollution, and improve the health of society. Photocatalytic removal, or disinfection, of chemical and biological species has been known for decades; however, its extension to indoor environments in public places has always been challenging. Many efforts have been made in this direction in the last two–three years since the COVID-19 pandemic started. Furthermore, the development of efficient photocatalytic nanomaterials through modifications to improve their photoactivity under ambient conditions for fighting with such a pandemic situation is a high research priority. In recent years, several metal oxides-based nano-photocatalysts have been designed to work efficiently in outdoor and indoor environments for the photocatalytic disinfection of biological species. The present review briefly discusses the advances made in the last two to three years for photocatalytic viral and bacterial disinfections. Moreover, emphasis has been given to the tailoring of such nano-photocatalysts in disinfecting surfaces, air, and water to stop viral/bacterial infection in the indoor environment. The role of such nano-photocatalysts in the photocatalytic disinfection of COVID-19 has also been highlighted with their future applicability in controlling such pandemics.
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Liu L, Meng G, Laghari AA, Chen H, Wang C, Xue Y. Reducing the risk of exposure of airborne antibiotic resistant bacteria and antibiotic resistance genes by dynamic continuous flow photocatalytic reactor. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128311. [PMID: 35074752 DOI: 10.1016/j.jhazmat.2022.128311] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/06/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
In this study, based on the dynamic photocatalytic reactor constructed by the new photocatalyst TiO2/MXene, the purification process of different biological particles in aerosol was systematically studied. Multidrug resistant bacteria were easier to inactivate than common bacteria of the same kind, whether under UV conditions or photocatalysis. Photocatalyst was loaded on porous polyurethane sponge filler so that the combined effect of adsorption and advanced oxidation significantly improved the antibiotic resistant bacteria (ARB) disinfection effect. The inactivation efficiency of two ARBs under UV254 increased by 1.2 lg and 2.1 lg. In addition, it was found that the microorganisms treated by UV had slight self-repair phenomenon in a short time, while the microbial activity decreased continuously after photocatalysis. With the addition of photocatalyst, the particle size distribution of airborne Escherichia coli decreased and the micro morphology of cells was more seriously damaged. Antibiotic resistance genes (ARGs) carried by ARB can be dissociated into the environment after cell destruction, but it can be removed at a high level (sul2 can achieve 2.11 lg) in the continuous reactor at the same time. While avoiding secondary pollution, it also provides a powerful solution for airborne ARGs control.
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Affiliation(s)
- Liming Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Ge Meng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Azhar Ali Laghari
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Hong Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China.
| | - Can Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China.
| | - Yimei Xue
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
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11
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Qiao Q, Chen Y, Wang Y, Ren Y, Cao J, Huang F, Bian Z. Surface modification of phosphate ion to promote photocatalytic recovery of precious metals. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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