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Chengula PJ, Charles H, Pawar RC, Lee CS. Current trends on dry photocatalytic oxidation technology for BTX removal: Viable light sources and highly efficient photocatalysts. CHEMOSPHERE 2024; 351:141197. [PMID: 38244866 DOI: 10.1016/j.chemosphere.2024.141197] [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: 09/15/2023] [Revised: 12/27/2023] [Accepted: 01/10/2024] [Indexed: 01/22/2024]
Abstract
One of the main gaseous pollutants released by chemical production industries are benzene, toluene and xylene (BTX). These dangerous gases require immediate technology to combat them, as they put the health of living organisms at risk. The development of heterogeneous photocatalytic oxidation technology offers several viewpoints, particularly in gaseous-phase decontamination without an additional supply of oxidants in air at atmospheric pressure. However, difficulties such as low quantum efficiency, ability to absorb visible light, affinity towards CO2 and H2O synthesis, and low stability continue to limit its practical use. This review presents recent advances in dry-phase heterogeneous photodegradation as an advanced technology for the practical removal of BTX molecules. This review also examines the impact of low-cost light sources, the roles of the active sites of photocatalysts, and the feasible concentration range of BTX molecules. Numerous studies have demonstrated a significant improvement in the efficiency of the photodegradation of volatile organic compounds by enhancing the photocatalytic reactor system and other factors, such as humidity, temperature, and flow rate. The mechanism for BTX photodegradation based on density functional theory (DFT), electron paramagnetic resonance (EPR) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) investigations is also discussed. Finally, the present research complications and anticipated future developments in the field of heterogeneous photocatalytic oxidation technology are discussed.
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Affiliation(s)
- Plassidius J Chengula
- Department of Materials and Chemical Engineering, Hanyang University, Ansan, South Korea
| | - Hazina Charles
- Department of Materials and Chemical Engineering, Hanyang University, Ansan, South Korea
| | - Rajendra C Pawar
- Department of Physics, Central University of Rajasthan, Ajmer, Rajasthan, 305817, India
| | - Caroline Sunyong Lee
- Department of Materials and Chemical Engineering, Hanyang University, Ansan, South Korea.
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2
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Nema A, Kaul DS, Mukherjee K. Photoactive catalysts for treatment of air pollutants: a bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9311-9330. [PMID: 36472747 DOI: 10.1007/s11356-022-24267-z] [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: 09/06/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
In recent years, photocatalysts are becoming attractive to researchers in exploring their application for treatment of air pollutants. Exposure to ultra-violet visible (UV-VIS) light on photocatalysts often makes them active in decomposing various toxic materials into less or environment-friendly products. Thus, identification, as well as simple synthesis and processing of photocatalysts, could ultimately lead to technologies for the cost-effective mitigation of environmental hazards. A bibliometric analysis has been carried out here to understand and assess the development in photocatalyst research. The data retrieved from the Scopus database on the topic for 2000-2020 were analyzed to investigate the research activities of the past to foresight the future. Various facets of bibliometry were investigated to produce this holistic article. The contribution of various countries, institutions, and authors were investigated. Numerous facets of photocatalyst such as types of photocatalysts, their modification through metal and non-metal doping, their pollutants treatment potency, types of reactors for photocatalysis, factors influencing treatment performance, and models used for designing reactors were examined. In brevity, substantial growth was observed in the last two decades. Contribution of China, the USA, Japan, and India were notable. Chinese universities contributed majorly to the research. Applied Catalysis B: Environmental Journal was the topic's main journal and Titanium dioxide was the hotspot in photocatalytic research. The research development, problem disclosure, adopted strategies, and materials explored on the photocatalysis for air pollution treatment over recent years across the world could be insightful to the researchers and eventually will be beneficial to formulate new research strategies.
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Affiliation(s)
- Akanksha Nema
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India
| | - Daya Shankar Kaul
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India.
| | - Kalisadhan Mukherjee
- Department of Chemistry, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India
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3
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de la Hoya FC, Castanedo-Pérez R, Márquez-Marín J, Hernández-García F, Torres-Delgado G. Study of the water content on the CdO + CdTiO3 crystalline grains distribution in thin films obtained by sol-gel and their effect on the morphological, optical, and photocatalytic properties. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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4
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Bathla A, Vikrant K, Kukkar D, Kim KH. Photocatalytic degradation of gaseous benzene using metal oxide nanocomposites. Adv Colloid Interface Sci 2022; 305:102696. [PMID: 35640317 DOI: 10.1016/j.cis.2022.102696] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/20/2022] [Accepted: 05/09/2022] [Indexed: 01/12/2023]
Abstract
Rapid industrial growth has been accompanied by the pollution of hazardous volatile organic pollutants (VOCs) in air. Among various options available for the treatment of VOCs, the use of metal oxide composites as photocatalysts has been adopted preferably due to their potential to induce the synergistic interactions between the metal nanoparticles (NPs) and metal oxides (especially titanium dioxide (TiO2)). In this context, an in-depth review is offered to describe the fundamental mechanism of metal oxide-based photocatalysis for the oxidation of gaseous benzene as a model VOC. The discussion has been extended further to evaluate their performances in terms of key performance metrics (e.g., quantum yield (QY), space-time yield (STY), and figure of merit (FOM)). The TiO2-based metallic bi-component photocatalysts (e.g., Sr2CeO4/TiO2) generally exhibited better photodegradation efficiency with enhanced light absorption capability than monometallic-TiO2 (e.g., Pd-TiO2) composites or other modified photocatalysts (e.g., metal-organic framework (MOF)-based composites). Finally, we address the current challenges and future perspectives in this highly challenging research field.
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Affiliation(s)
- Aadil Bathla
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Kumar Vikrant
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Deepak Kukkar
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali -140413, Punjab, India; Department of Biotechnology, Chandigarh University, Gharuan, Mohali - 140413, Punjab, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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5
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Priya AK, Suresh R, Kumar PS, Rajendran S, Vo DVN, Soto-Moscoso M. A review on recent advancements in photocatalytic remediation for harmful inorganic and organic gases. CHEMOSPHERE 2021; 284:131344. [PMID: 34225112 DOI: 10.1016/j.chemosphere.2021.131344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/19/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Due to the continuous increase in industrial pollution and modern lifestyle, several types of air contaminants and their concentrations are emerging in the atmosphere. Besides, photocatalysis has gained much attention in the elimination of air pollution. Several ultraviolet and visible light active photocatalysts were tested in air pollutant treatment and thereby, the number of reports was increased in the past few years. In this context, this review describes the photocatalytic treatment of gaseous inorganic contaminants like NOx, H2S, and organic pollutants like formaldehyde, acetaldehyde, and benzene derivatives. Different photocatalysts with their air pollutant removal efficiency were explained. Improving strategies such as metal/non-metal doping, composite formation for photocatalyst activities have been studied. Moreover, an analysis is presented from each of the existing photocatalytic immobilization approaches. Also, factors responsible for effective photocatalysis were explained. Overall, the photocatalytic abatement technique is an auspicious way to eliminate different air contaminants. Besides, existing drawbacks and future challenges are also discussed.
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Affiliation(s)
- A K Priya
- Department of Civil Engineering, KPR Institute of Engineering and Technology, Coimbatore, 641027, India
| | - R Suresh
- Laboratorio de Investigaciones Ambientales Zonas Áridas, Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - Saravanan Rajendran
- Laboratorio de Investigaciones Ambientales Zonas Áridas, Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile.
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
| | - Matias Soto-Moscoso
- Departamento de Física, Facultad de Ciencias, Universidad del Bío-bío, Avenida Collao 1202, Casilla 15-C, Concepción, Chile
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Kaoien P, Dechapanya W, Khamwichit A, Suwannahong K. Natural rubber modification as a pre-vulcanized latex impregnated with TiO 2 for photo-catalytic degradation of gaseous benzene. Heliyon 2020; 6:e03912. [PMID: 32420484 PMCID: PMC7218017 DOI: 10.1016/j.heliyon.2020.e03912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/08/2020] [Accepted: 04/29/2020] [Indexed: 11/23/2022] Open
Abstract
Photocatalytic oxidation purposes an economical and environmental friendly process to remove benzene from indoor air pollution. However, the process efficiency is primarily dependent on catalytic-film. The main purpose of this study is to synthesize pre-vulcanized latex impregnated with TiO2 (PVL-TiO2 thin film) from natural rubber to be used in photo-catalytic oxidation for benzene removal in a reactor. PVL-TiO2 thin films were synthesized for 3 different dosages of TiO2, which were 5%, 15%, and 25% The outcome of this study offers the new application of modified natural rubber in terms of environmental and health care protection. Morphology of the synthesized films was analyzed by SEM. The results showed that TiO2 particles could be well dispersed all over the surface of the film, in which the best distribution could be found for the PVL-TiO2 15% thin film. Tensile stress of the films was analyzed using ASTM D412. Results showed that the stress of the films got higher with the increasing amount of TiO2 content. This indicates that TiO2 strengthened the PVL-TiO2 film because the uniformly distribution of TiO2 on the inner surface increased the strength of the film. The decomposition of PVL and PVL-TiO2 thin films was analyzed using thermo gravimetric analysis. The maximum weight loss rates in the range of 1.536-1.145 wt%/°C attained at between 380 - 382 °C TiO2 particles enhanced thermal stability of PVL-TiO2 thin films due to the high decomposition temperature of its properties and also acted as barrier for the heat transfer of the films. Specific surface area (SSA) of the films was analyzed using Brunauer-Emmett-Teller. Specific surface area increased as the increasing content of TiO2, which corresponded to the morphology analysis by SEM. The analysis of chemical functional group of thin films was performed using ATR-FTIR. The results of Crystal identification using XRD clearly showed good attachment of rutile TiO2 on the films. Finally, results of absorbance spectrums and band gap energy showed that PVL not only peg TiO2 particles but also reducing band gap energy which induced by S and ZnO. Therefore, PVL-TiO2 thin films could be used under visible light condition. The films were then used in the study of benzene removal in annular reactor. The highest removal efficiency (83%)for the PVL-TiO2 15% thin film was obtained. Comparing to the maximum removal efficiency for PVL film (28%), roughly 60% increase in efficiency was achieved. The PCO kinetics were well fit by a first order Langmuir-Hinshelwood model. The calculation of oxidation rate and percentage of residual intermediates indicated that accumulation of residual intermediates can occur on the active site and the gas phase, resulting in increasing of residual intermediates. The successful synthesis of PVL-TiO2 thin film provides new opportunity to use natural rubber in terms of environmental and health care protection.
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Affiliation(s)
- Peerapol Kaoien
- School of Engineering and Technology, Walailak University, 222, Thai Buri, Tha Sala District, Nakhon Sri Thammarat Provicne, 80160 Thailand
| | - Wipawee Dechapanya
- School of Engineering and Technology, Walailak University, 222, Thai Buri, Tha Sala District, Nakhon Sri Thammarat Provicne, 80160 Thailand
| | - Attaso Khamwichit
- School of Engineering and Technology, Walailak University, 222, Thai Buri, Tha Sala District, Nakhon Sri Thammarat Provicne, 80160 Thailand
| | - Kowit Suwannahong
- Faculty of Public Health, Burapha University, 169, Saensuk, Mueang Chon Buri District, Chon Buri Province, 20131 Thailand
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7
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Zhang L, Moralejo C, Anderson WA. A review of the influence of humidity on photocatalytic decomposition of gaseous pollutants on TiO
2
‐based catalysts. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23652] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lianfeng Zhang
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
- Laboratory of Ecological and Environmental ProtectionResearch Institute of Tsinghua University in Shenzhen Shenzhen China
| | - Carol Moralejo
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
| | - William A. Anderson
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
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8
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Platt NJ, Kaye KM, Limburn GJ, Cosham SD, Kulak AN, Palgrave RG, Hyett G. Order of magnitude increase in photocatalytic rate for hierarchically porous anatase thin films synthesized from zinc titanate coatings. Dalton Trans 2017; 46:1975-1985. [DOI: 10.1039/c6dt04431j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc titanate films are converted into porous anatase showing a 12-fold increase in rate compared to non-porous titania films.
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Affiliation(s)
| | - Karl M. Kaye
- Department of Chemistry
- University of Southampton
- Southampton
- UK
| | | | | | | | | | - Geoffrey Hyett
- Department of Chemistry
- University of Southampton
- Southampton
- UK
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9
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Singh P, Ojha A, Borthakur A, Singh R, Lahiry D, Tiwary D, Mishra PK. Emerging trends in photodegradation of petrochemical wastes: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:22340-22364. [PMID: 27566154 DOI: 10.1007/s11356-016-7373-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
Various human activities like mining and extraction of mineral oils have been used for the modernization of society and well-beings. However, the by-products such as petrochemical wastes generated from such industries are carcinogenic and toxic, which had increased environmental pollution and risks to human health several folds. Various methods such as physical, chemical and biological methods have been used to degrade these pollutants from wastewater. Advance oxidation processes (AOPs) are evolving techniques for efficient sequestration of chemically stable and less biodegradable organic pollutants. In the present review, photocatalytic degradation of petrochemical wastes containing monoaromatic and poly-aromatic hydrocarbons has been studied using various heterogeneous photocatalysts (such as TiO2, ZnO and CdS. The present article seeks to offer a scientific and technical overview of the current trend in the use of the photocatalyst for remediation and degradation of petrochemical waste depending upon the recent advances in photodegradation of petrochemical research using bibliometric analysis. We further outlined the effect of various heterogeneous catalysts and their ecotoxicity, various degradation pathways of petrochemical wastes, the key regulatory parameters and the reactors used. A critical analysis of the available literature revealed that TiO2 is widely reported in the degradation processes along with other semiconductors/nanomaterials in visible and UV light irradiation. Further, various degradation studies have been carried out at laboratory scale in the presence of UV light. However, further elaborative research is needed for successful application of the laboratory scale techniques to pilot-scale operation and to develop environmental friendly catalysts which support the sustainable treatment technology with the "zero concept" of industrial wastewater. Nevertheless, there is a need to develop more effective methods which consume less energy and are more efficient in pilot scale for the demineralization of pollutant.
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Affiliation(s)
- Pardeep Singh
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India.
- Department of Environmental Studies, PGDAV College, University of Delhi, New Delhi, 110068, India.
| | - Ankita Ojha
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
| | - Anwesha Borthakur
- Centre for Studies in Science Policy, Jawaharlal Nehru University (JNU), New Delhi, 110067, India
| | - Rishikesh Singh
- Institute of Environment and Sustainable Development (IESD), Banaras Hindu University, Varanasi, 221005, India
| | - D Lahiry
- Rajghat Education Centre, KFI, Varanasi, 221005, India
| | - Dhanesh Tiwary
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
| | - Pradeep Kumar Mishra
- Department of Chemical Engineering and Technology, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
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