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Ahtasham Iqbal M, Akram S, Khalid S, Lal B, Hassan SU, Ashraf R, Kezembayeva G, Mushtaq M, Chinibayeva N, Hosseini-Bandegharaei A. Advanced photocatalysis as a viable and sustainable wastewater treatment process: A comprehensive review. ENVIRONMENTAL RESEARCH 2024; 253:118947. [PMID: 38744372 DOI: 10.1016/j.envres.2024.118947] [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: 10/31/2023] [Revised: 03/14/2024] [Accepted: 04/14/2024] [Indexed: 05/16/2024]
Abstract
In our era, water pollution not only poses a serious threat to human, animal, and biotic life but also causes serious damage to infrastructure and the ecosystem. A set of physical, chemical, and biological technologies have been exploited to decontaminate and/or disinfect water pollutants, toxins, microbes, and contaminants, but none of these could be ranked as sustainable and scalable wastewater technology. The photocatalytic process can harmonize the sunlight to degrade certain toxins, chemicals, microbes, and antibiotics, present in water. For example, transition metal oxides (ZnO, SnO2, TiO2, etc.), when integrated into an organic framework of graphene or nitrides, can bring about more than 90% removal of dyes, microbial load, pesticides, and antibiotics. Similarly, a modified network of graphitic carbon nitride can completely decontaminate petrochemicals. The present review will primarily highlight the mechanistic aspects for the removal and/or degradation of highly concerned contaminants, factors affecting photocatalysis, engineering designs of photoreactors, and pros and cons of various wastewater treatment technologies already in practice. The photocatalytic reactor can be a more viable and sustainable wastewater treatment opportunity. We hope the researcher will find a handful of information regarding the advanced oxidation process accomplished via photocatalysis and the benefits associated with the photocatalytic-type degradation of water pollutants and contaminants.
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Affiliation(s)
| | - Sumia Akram
- Division of Science and Technology, University of Education Lahore, Pakistan
| | - Shahreen Khalid
- Department of Chemistry, Government College University Lahore, Pakistan
| | - Basant Lal
- Department of Chemistry, Institute of Applied Science and Humanities, GLA University, Mathura, 281406, India
| | - Sohaib Ul Hassan
- Department of Irrigation & Drainage, University of Agriculture, Faisalabad, Pakistan
| | - Rizwan Ashraf
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Gulmira Kezembayeva
- Mining and Metallurgical Institute Named After O.A. Baikonurov, Department Chemical Processes and Industrial Ecology, Satbayev University, Almaty, Kazakhstan
| | - Muhammad Mushtaq
- Department of Chemistry, Government College University Lahore, Pakistan.
| | | | - Ahmad Hosseini-Bandegharaei
- Faculty of Chemistry, Semnan University, Semnan, Iran; Centre of Research Impact and Outcome, Chitkara University, Rajpura-140417, Punjab, India; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai-602105, Tamil Nadu, India.
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2
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ERNAM S, AKGÜL ZE, ÜNER D. Recommendations for improving the experimental protocol for the determination of photocatalytic activity by nitric oxide oxidation measurements. Turk J Chem 2023; 47:1285-1295. [PMID: 38173752 PMCID: PMC10760864 DOI: 10.55730/1300-0527.3612] [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: 04/27/2023] [Revised: 10/31/2023] [Accepted: 09/30/2023] [Indexed: 01/05/2024] Open
Abstract
The photocatalytic nitric oxide (NO) oxidation reaction is used as a standard diagnostic tool for photocatalytic activity according to the well-defined protocol described by ISO Standard 22197-1-2007. This protocol identifies the negative peak showing a NOx concentration drop during a gas flow switch from the calibration bypass to the reactor as adsorption of NOx on the surface. Evidence is provided for this first transient to be due to a dilution effect in the gas phase within the reactor. With proper models of residence time distribution analysis, this transient revealed the internal hydrodynamics and it can be used to determine the internal volumes of the system. The second transient occurs immediately after the light is switched on. The conversions strongly depend on the time constant of this transient. Controlled measurements of the effect of illumination intensity revealed that at higher light intensities the transient takes longer to reach steady state. The longer transient was attributed to the time needed to reach a thermal steady state of the hot spots generated by the recombination of excess charge carriers. When the catalyst amount was investigated as a parameter, a saturation effect was observed. This saturation effect was correlated with the gas phase concentrations of NOx and moisture and their ratios to the available specific surface area. Hence, additional constraints with respect to the illumination intensity and catalyst amounts are recommended for accurate measurements of photocatalytic activity by NO oxidation.
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Affiliation(s)
- Selin ERNAM
- Department of Chemical Engineering, Faculty of Engineering, Middle East Technical University, Ankara,
Turkiye
| | - Zeynep Ece AKGÜL
- Department of Chemical Engineering, Faculty of Engineering, Middle East Technical University, Ankara,
Turkiye
| | - Deniz ÜNER
- Department of Chemical Engineering, Faculty of Engineering, Middle East Technical University, Ankara,
Turkiye
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3
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Fernández-Pampillón J, Palacios M, Núñez L, Pujadas M, Artíñano B. Potential ambient NO 2 abatement by applying photocatalytic materials in a Spanish city and analysis of short-term effect on human mortality. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121203. [PMID: 36738878 DOI: 10.1016/j.envpol.2023.121203] [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: 12/14/2022] [Revised: 01/20/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Road traffic is the main contributor to NO2 emissions in many European cities, causing that the current limit values for the protection of human health are exceeded. The use of photocatalytic compounds that incorporate titanium dioxide (TiO2) is frequently proposed as abatement technology but its depolluting effectiveness on a real scale is still being investigated. In this work, the potential removal capacity of NO2 that selected TiO2-based materials would have if they were implemented in a street in the municipality of Alcobendas (Community of Madrid, Spain) has been evaluated. The number of avoided NO2-related deaths over the locality across the period 2001-2019 have been inferred. Moreover, the saving associated with the estimated removal of ambient NO2 due to the use of photocatalytic materials and costs generated by their acquisition and implementation in the selected urban environment were briefly studied. Attributable mortality due to NO2 concentrations for Alcobendas has been estimated in 289 deaths, being 9241 the total deaths due to natural cause. This presents a monthly variation associated with the evolution of both mortality due to natural causes and the average concentrations of NO2. The reduction in mortality via the hypothetical implantation of photocatalytic materials throughout the municipality, assuming ideal conditions for their optimal performance, would be a maximum of 3%. In addition, a saving of €5708 yr-1 km-2 related to NOx damage costs of transport was obtained. A total cost of k€4750.5 km-2 was associated to the purchase of photocatalytic materials and their application to all surfaces in that area. This technology has a big elimination potential in controlled conditions but a low reduction of ambient NO2 is provided when implemented in real outdoor urban scenarios. Its use can be recommended incorporated into engineering designs and applications, complementing other abatement measures, to reduce NO2 mortality in urban areas.
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Affiliation(s)
- Jaime Fernández-Pampillón
- Research Centre for Energy, Environment and Technology (CIEMAT), Madrid, 28040, Spain; The National Distance Education University (UNED), Madrid, 28232, Spain
| | - Magdalena Palacios
- Research Centre for Energy, Environment and Technology (CIEMAT), Madrid, 28040, Spain
| | - Lourdes Núñez
- Research Centre for Energy, Environment and Technology (CIEMAT), Madrid, 28040, Spain.
| | - Manuel Pujadas
- Research Centre for Energy, Environment and Technology (CIEMAT), Madrid, 28040, Spain
| | - Begoña Artíñano
- Research Centre for Energy, Environment and Technology (CIEMAT), Madrid, 28040, Spain
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4
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Jin H, Lee TM, Choi H, Kim KS. Effects of process variables for NO conversion by double-layered photocatalytic mortar with TiO2 nanoparticles. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.10.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Li N, Wang C, Zhang K, Lv H, Yuan M, Bahnemann DW. Progress and prospects of photocatalytic conversion of low-concentration NO. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64139-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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6
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Lee SF, Jimenez-Relinque E, Martinez I, Castellote M. Photoelectrochemical global approach to the behaviour of nanostructured anatase under different irradiation conditions. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Acosta-Angulo B, Lara-Ramos J, Diaz-Angulo J, Torres-Palma R, Martínez-Pachon D, Moncayo-Lasso A, Machuca-Martínez F. Analysis of the Applications of Particle Swarm Optimization and Genetic Algorithms on Reaction Kinetics: A Prospective Study for Advanced Oxidation Processes. ChemElectroChem 2022. [DOI: 10.1002/celc.202200229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Jose Lara-Ramos
- Universidad del Valle Escuela de Ingeniería Química COLOMBIA
| | | | - Ricardo Torres-Palma
- Universidad de Antioquía: Universidad de Antioquia Facultad de Ciencias Exactas y Naturales COLOMBIA
| | - Diana Martínez-Pachon
- Universidad Antonio Nariño: Universidad Antonio Narino Facultad de Ciencias COLOMBIA
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Amakiri KT, Angelis-Dimakis A, Ramirez Canon A. Recent advances, influencing factors, and future research prospects using photocatalytic process for produced water treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:769-788. [PMID: 35166699 DOI: 10.2166/wst.2021.641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Oilfield-produced water is the primary by-product generated during oil and gas extraction operations. Oilfield-produced water is often severely toxic and poses substantial health, safety, and environmental issues; adequate treatment technologies can bring these streams to a quality level. Photocatalysis is a photochemical catalytic reaction that is a highly promising tool for environmental remediation due to its efficiency in mineralizing persistent and potentially toxic contaminants. However, there is limited understanding of its application to treat oilfield-produced water with a complex and highly variable water composition. This review article discusses the mechanisms and current state of heterogeneous photocatalytic systems for oilfield-produced water treatment, highlighting impediments to knowledge transfer, including the feasibility of practical applications and the identification of essential research requirements. Additionally, the effects of significant variables such as catalyst quantity, pH, organic compound concentration, light intensity, and wavelength are discussed in detail. Some solutions are proposed for scientists and engineers interested in advancing the development of industrial-scale photocatalytic water treatment technologies.
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9
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Han R, Andrews R, O’Rourke C, Hodgen S, Mills A. Photocatalytic air purification: Effect of HNO3 accumulation on NOx and VOC removal. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.04.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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de Moraes NP, Goes CM, Rocha RDS, Gouvêa MEV, de Siervo A, Silva MLCPD, Rodrigues LA. Tannin-based carbon xerogel as a promising co-catalyst for photodegradation processes based on solar light: a case study using the tin (IV) oxide/carbon xerogel composite. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1978076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nicolas Perciani de Moraes
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
| | - Clarice Moreira Goes
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
| | - Robson da Silva Rocha
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
| | - Maira Elizabeth Vicente Gouvêa
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
| | - Abner de Siervo
- Institute of Physics “Gleb Wataghin”, Applied Physics Department, State University of Campinas, Campinas, São Paulo, Brazil
| | - Maria Lucia Caetano Pinto da Silva
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
| | - Liana Alvares Rodrigues
- Department of Chemical Engineering, Escola de Engenharia de Lorena-EEL/USP, Estrada Municipal do Campinho S/N, Lorena, São Paulo, Brazil
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11
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Lu X, Luo X, Tan JZ, Maroto-Valer MM. Simulation of CO2 photoreduction in a twin reactor by multiphysics models. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.04.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Cordero JM, Hingorani R, Jimenez-Relinque E, Grande M, Cutillas F, Martinez E, Borge R, Narros A, Castellote M. Challenges in quantification of photocatalytic NO 2 abatement effectiveness under real world exposure conditions illustrated by a case study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:144393. [PMID: 33418266 DOI: 10.1016/j.scitotenv.2020.144393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Health risks due to NO2 exposure commonly exceed acceptable levels in modern societies. Among the measures to reduce such risks, photocatalytic materials present a promising technology. However, while the pollutant remediation of such materials has been extensively validated in laboratory studies, the performance under real world environmental exposure conditions is still subject to controversy. Indeed, a comparison of available in-situ monitoring studies manifests non-conclusive and highly scattered results regarding the photocatalytic effectiveness observed. The reasons for this behaviour must be carefully explored in order to prevent non-efficient photocatalytic applications from being put into practice on a larger scale. This paper presents a comprehensive large-scale study for assessing the photocatalytic NO2 remediation by active pavements in a street of Madrid (Spain), comprising different in-situ monitoring techniques. The discussion is enriched by relating the obtained results to those of other large-scale studies. The discrepancies between these results may be traced back to different circumstances, among them the distance between the active pavement and the pollutant concentration sampling inlet, as well as to significant site-specific and time-dependent variations of pollutant concentrations and climatic parameters. Under due consideration of these influences, for materials with relatively high initial effectiveness, it was concluded that in most such applications, the average NO2 removal effectiveness, if evaluated at a typical inlet height of Air Quality Stations (3 m), will not exceed a value of 4% (averaged over a sufficiently large number of measurement points in the area of application and a sustained amount of time, i.e. several months). When considering more realistic human exposure conditions (lower heights and daytime), it might be justified to assume somewhat higher average effectiveness.
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Affiliation(s)
- J M Cordero
- Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
| | - R Hingorani
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - E Jimenez-Relinque
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - M Grande
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - F Cutillas
- Departamento de Apoyo Técnico e Innovación, DG del Espacio Público, Obras e Infraestructura, Madrid City Council, Barco 20, 28004 Madrid, Spain
| | - E Martinez
- Departamento de Apoyo Técnico e Innovación, DG del Espacio Público, Obras e Infraestructura, Madrid City Council, Barco 20, 28004 Madrid, Spain
| | - R Borge
- Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - A Narros
- Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - M Castellote
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
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13
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Ebrahimi E, Irfan M, Shabani F, Kocak Y, Karakurt B, Erdem E, Demir HV, Ozensoy E. Core‐crown Quantum Nanoplatelets with Favorable Type‐II Heterojunctions Boost Charge Separation and Photocatalytic NO Oxidation on TiO
2. ChemCatChem 2020. [DOI: 10.1002/cctc.202000749] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Elnaz Ebrahimi
- Chemistry Department Bilkent University 06800 Ankara Turkey
| | - Muhammad Irfan
- Chemistry Department Bilkent University 06800 Ankara Turkey
- Nanoscience and Catalysis Department National Centre of Physics 44000 Islamabad Pakistan
| | - Farzan Shabani
- UNAM-National Nanotechnology Center Bilkent University 06800 Ankara Turkey
| | - Yusuf Kocak
- Chemistry Department Bilkent University 06800 Ankara Turkey
| | - Bartu Karakurt
- Chemistry Department Bilkent University 06800 Ankara Turkey
| | - Emre Erdem
- SUNUM Nanotechnology Research Center Sabanci University 34956 Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University 34956 Istanbul Turkey
| | - Hilmi Volkan Demir
- UNAM-National Nanotechnology Center Bilkent University 06800 Ankara Turkey
- Department of Electrical and Electronics Engineering and Department of Physics Bilkent University 06800 Ankara Turkey
- School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences and School of Materials Science and Engineering Nanyang Technological University 639798 Singapore Singapore
| | - Emrah Ozensoy
- Chemistry Department Bilkent University 06800 Ankara Turkey
- UNAM-National Nanotechnology Center Bilkent University 06800 Ankara Turkey
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14
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Gusachenko EA, Lyulyukin MN, Kozlov DV. Effect of Corona Discharge Plasma and Ozone on the Rate of the Photocatalytic Oxidation of Acetone and Benzene Vapors. CATALYSIS IN INDUSTRY 2020. [DOI: 10.1134/s207005042002004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Cordero JM, Hingorani R, Jimenez-Relinque E, Grande M, Borge R, Narros A, Castellote M. NO x removal efficiency of urban photocatalytic pavements at pilot scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:137459. [PMID: 32151396 DOI: 10.1016/j.scitotenv.2020.137459] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
Photocatalytic technology implemented in construction materials is a promising solution to contribute to alleviate air quality issues found in big cities. Photocatalysis has been proved able to mineralise most harmful contaminants. However, important problems associated with monitoring the efficiency of these solutions under real conditions still remain, including the lack of affordable analytical tools to measure NOx concentrations with enough accuracy. In this work, two pilot scale demonstration platforms were built at two different locations to assess the photocatalytic NOX removal efficiency of ten selected materials exposed outdoors for AQmesh low-cost sensor PODs were used to measure ground-level to measure NO and NO2 concentrations during nearly one year. The pollutant removal efficiency of the materials was then calculated based on a comparison with simultaneously concentration measurements carried-out on reference, non-active materials. It was found that the NO2 removal efficiency presented large variations across the seasons, with maxima during the warmer months, while NO efficiencies were comparatively steadier. Statistical analysis delivered evidence that the efficiencies significantly depend on different meteorological variables (irradiance and relative humidity) besides NO, NO2 ambient concentrations. Lower efficiencies were observed for higher concentration levels and vice versa. The influence of water vapour could be related to two different effects: a short-term contribution by the instantaneous air humidity and a long-term component associated with the hygroscopic state of the material. The contribution of wind to the pollutant removal efficiencies was principally related to the humidity of air masses moving above the location and to the advection of pollutants from specific emission sources.
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Affiliation(s)
- J M Cordero
- Universidad Politécnica de Madrid (UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
| | - R Hingorani
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - E Jimenez-Relinque
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - M Grande
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
| | - R Borge
- Universidad Politécnica de Madrid (UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - A Narros
- Universidad Politécnica de Madrid (UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - M Castellote
- Institute of Construction Science "Eduardo Torroja" IETcc-CSIC, Serrano Galvache 4, 28033 Madrid, Spain
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16
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Mendiola-Alvarez SY, Palomino-Cabello C, Hernández-Ramírez A, Turnes-Palomino G, Guzmán-Mar JL, Hinojosa-Reyes L. Coupled heterogeneous photocatalysis using a P-TiO2-αFe2O3 catalyst and K2S2O8 for the efficient degradation of a sulfonamide mixture. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112485] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Reaction Rate Study of the Photocatalytic Degradation of Dichloroacetic Acid in a Black Body Reactor. Catalysts 2019. [DOI: 10.3390/catal9080635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The light-induced degradation of dichloroacetic acid in aqueous suspensions containing the TiO2 photocatalyst Hombikat UV 100 was investigated. The reactions were performed in a black body reactor in which the rate of conversion, defined as the time derivative of the extent of conversion, is not affected by the light scattering properties of the photocatalysts. At sufficiently high concentrations of both the probe compound and the photocatalyst the rate of conversion was found to be unswayed by the initial concentration of the probe compound, the mass concentration of the photocatalyst, and the suspension volume. Thus, the chosen experimental conditions enable the determination of the rate of conversion and the quantum yield of the light induced degradation of dichloroacetic acid in aqueous photocatalyst suspension with sufficiently good reproducibility. The experimental procedure employed here seems to be generally applicable to determine rates of conversion and quantum yields that possibly allow a comparison of the activities of photocatalysts in aqueous suspensions.
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18
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Patzsch J, Berg B, Bloh JZ. Kinetics and Optimization of the Photocatalytic Reduction of Nitrobenzene. Front Chem 2019; 7:289. [PMID: 31069220 PMCID: PMC6491869 DOI: 10.3389/fchem.2019.00289] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/08/2019] [Indexed: 11/29/2022] Open
Abstract
The photocatalytic reduction of nitrobenzene to aniline in alcoholic solutions appears as an interesting alternative to the classical hydration. However, little is known about the influence of reaction parameters on the kinetics of the reaction which were therefore studied herein. The effects of light intensity, catalyst concentration, initial concentration, and temperature were systematically investigated under more than 50 different conditions and accurately described with an appropriate kinetic model. The results show that the efficiency of the reaction is extremely high and apparent quantum yields of up to 142 % were observed under optimized conditions. Particularly interesting is the fact high efficiencies were also obtained at high reaction rates of up to 74.3 mM h-1. Overall these results demonstrate that heterogeneous photocatalytic reactions can be very efficient and productive at the same time and may therefore present a powerful tool in synthetic organic chemistry.
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Affiliation(s)
| | | | - Jonathan Z. Bloh
- DECHEMA-Forschungsinstitut, Chemical Technology Group, Frankfurt, Germany
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19
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Muñoz V, Casado C, Suárez S, Sánchez B, Marugán J. Photocatalytic NOx removal: Rigorous kinetic modelling and ISO standard reactor simulation. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Bloh JZ. A Holistic Approach to Model the Kinetics of Photocatalytic Reactions. Front Chem 2019; 7:128. [PMID: 30923708 PMCID: PMC6426749 DOI: 10.3389/fchem.2019.00128] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/18/2019] [Indexed: 11/21/2022] Open
Abstract
Understanding and modeling kinetics is an essential part of the optimization and implementation of chemical reactions. In the case of photocatalytic reactions this is mostly done one-dimensionally, i.e., only considering the effect of one parameter at the same time. However, as discussed in this study, many of the relevant reaction parameters have mutual interdependencies that call for a holistic multi-dimensional approach to accurately model and understand their influence. Such an approach is described herein, and all the relevant equations given so that researchers can readily implement it to analyze and model their reactions.
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21
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Ângelo J, Magalhães P, Andrade L, Madeira LM, Mendes A. Optimization of the NO photooxidation and the role of relative humidity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 240:541-548. [PMID: 29758528 DOI: 10.1016/j.envpol.2018.04.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/31/2018] [Accepted: 04/10/2018] [Indexed: 06/08/2023]
Abstract
Photocatalysis was recognised as a suitable process for the photoabatement of atmospheric pollutants. The photooxidation mechanism on TiO2 has been widely studied. However, recent studies demonstrated that the very often-assumed photooxidation intermediated by the hydroxyl radical cannot explain all the experimental observations. Indeed, this study contributes for a new understanding of NO photooxidation. First, the adsorption equilibrium isotherms of NO, NO2 and H2O on the photocatalyst, Aeroxide® P25 from Evonik Industries, were obtained. Also, the concentration of hydroxyl radicals was determined by photoluminescence. A comprehensive design of experiments was then followed; NO conversion and selectivity were obtained as a function of the relative humidity, irradiance, NO inlet concentration and residence time, following a response surface methodology (RSM). These results were then used to discuss the photooxidation mechanism of NO.
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Affiliation(s)
- Joana Ângelo
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Pedro Magalhães
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Luísa Andrade
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Luís M Madeira
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Adélio Mendes
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal.
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22
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Folli A, Bloh JZ, Armstrong K, Richards E, Murphy DM, Lu L, Kiely CJ, Morgan DJ, Smith RI, Mclaughlin AC, Macphee DE. Improving the Selectivity of Photocatalytic NOx Abatement through Improved O2 Reduction Pathways Using Ti0.909W0.091O2Nx Semiconductor Nanoparticles: From Characterization to Photocatalytic Performance. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Andrea Folli
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Jonathan Z. Bloh
- DECHEMA Research Institute, Theodor-Heuss-Allee 25, Frankfurt am Main 60468, Germany
| | - Katherine Armstrong
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Emma Richards
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Damien M. Murphy
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Li Lu
- Department of Materials Science and Engineering, Lehigh University, Whitaker Laboratory, 5 East Packer Ave, Bethlehem, Pennsylvania 18015, United States
| | - Christopher J. Kiely
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
- Department of Materials Science and Engineering, Lehigh University, Whitaker Laboratory, 5 East Packer Ave, Bethlehem, Pennsylvania 18015, United States
| | - David J. Morgan
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Ronald I. Smith
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Abbie C. Mclaughlin
- Department of Chemistry, University of Aberdeen, Meston Building, Meston Walk, Aberdeen AB24 3UE, United Kingdom
| | - Donald E. Macphee
- Department of Chemistry, University of Aberdeen, Meston Building, Meston Walk, Aberdeen AB24 3UE, United Kingdom
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23
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Sieland F, Schneider J, Bahnemann DW. Photocatalytic activity and charge carrier dynamics of TiO2 powders with a binary particle size distribution. Phys Chem Chem Phys 2018. [DOI: 10.1039/c8cp00398j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The effects of the particle size distribution on the charge carrier dynamics and the photocatalytic activity of mixed titanium dioxide (TiO2) powder samples were investigated in this work.
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Affiliation(s)
- Fabian Sieland
- Institute of Technical Chemistry
- Leibniz University Hannover
- 30167 Hannover
- Germany
| | - Jenny Schneider
- Institute of Technical Chemistry
- Leibniz University Hannover
- 30167 Hannover
- Germany
| | - Detlef W. Bahnemann
- Institute of Technical Chemistry
- Leibniz University Hannover
- 30167 Hannover
- Germany
- Laboratory “Photoactive Nanocomposite Materials”
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24
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Patzsch J, Spencer J, Folli A, Bloh JZ. Grafted iron(iii) ions significantly enhance NO2 oxidation rate and selectivity of TiO2 for photocatalytic NOx abatement. RSC Adv 2018; 8:27674-27685. [PMID: 35542738 PMCID: PMC9084282 DOI: 10.1039/c8ra05017a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/25/2018] [Indexed: 11/21/2022] Open
Abstract
Semiconductor photocatalysis could be an effective means to combat nitrogen oxides (NOx) based air pollution through mineralisation of NOx to nitrate. However, most of the typically TiO2-based catalysts employed show a much higher reactivity towards NO than NO2, leading to an accumulation of this unwanted and toxic intermediate. By grafting the photocatalyst with small amounts (≤0.1 at%) of isolated iron(iii) ions, the reactivity towards NO2 is increased by the factor of 9, bringing it up to par with the NO-reactivity and alleviating the problem with intermediate accumulation. Consequently, the observed selectivity of the reaction is dramatically increased from less than 40% to more than 90%. The paper also discusses possible mechanisms for this very beneficial behavior. By grafting small amounts of iron ions onto TiO2, the rate of photocatalytic oxidation of NO2 is increased by a factor of 9.![]()
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Affiliation(s)
- Julia Patzsch
- DECHEMA-Forschungsinstitut
- 60486 Frankfurt am Main
- Germany
| | | | - Andrea Folli
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
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25
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Hakki A, Yang L, Wang F, Macphee DE. The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance. J Vis Exp 2017. [PMID: 28715384 PMCID: PMC5608545 DOI: 10.3791/56070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The chemical bonding of particulate photocatalysts to supporting material surfaces is of great importance in engineering more efficient and practical photocatalytic structures. However, the influence of such chemical bonding on the optical and surface properties of the photocatalyst and thus its photocatalytic activity/reaction selectivity behavior has not been systematically studied. In this investigation, TiO2 has been supported on the surface of SiO2 by means of two different methods: (i) by the in situ formation of TiO2 in the presence of sand quartz via a sol-gel method employing tetrabutyl orthotitanium (TBOT); and (ii) by binding the commercial TiO2 powder to quartz on a surface silica gel layer formed from the reaction of quartz with tetraethylorthosilicate (TEOS). For comparison, TiO2 nanoparticles were also deposited on the surfaces of a more reactive SiO2 prepared by a hydrolysis-controlled sol-gel technique as well as through a sol-gel route from TiO2 and SiO2 precursors. The combination of TiO2 and SiO2, through interfacial Ti-O-Si bonds, was confirmed by FTIR spectroscopy and the photocatalytic activities of the obtained composites were tested for photocatalytic degradation of NO according to the ISO standard method (ISO 22197−1). The electron microscope images of the obtained materials showed that variable photocatalyst coverage of the support surface can successfully be achieved but the photocatalytic activity towards NO removal was found to be affected by the preparation method and the nitrate selectivity is adversely affected by Ti-O-Si bonding.
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Affiliation(s)
- Amer Hakki
- Department of Chemistry, University of Aberdeen
| | - Lu Yang
- Department of Chemistry, University of Aberdeen; State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
| | - Fazhou Wang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
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26
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Li Z, Fang Y, Wang Y, Jiang Y, Liu T, Wang W. Visualizing the bidirectional electron transfer in a Schottky junction consisting of single CdS nanoparticles and a planar gold film. Chem Sci 2017; 8:5019-5023. [PMID: 30155222 PMCID: PMC6100258 DOI: 10.1039/c7sc00990a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 04/23/2017] [Indexed: 11/21/2022] Open
Abstract
Bidirectional electron transfer crossing the metal/semiconductor interface regulates the light absorption and carrier separation efficiency of plasmonic-semiconductor hybrid nanomaterials. Existing studies have been largely focused on a localized surface plasmon resonance (LSPR) effect contributed by an ensemble of metal nanomaterials. Herein, we constructed a Schottky junction that consisted of single CdS nanoparticles and a planar gold film, and investigated hot electrons excited by the surface plasmon polaritons (SPPs) propagating in the gold film. When illuminating the interface with blue light, photoinduced electrons were found to inject from the CdS nanoparticle to the gold film. In a reverse process, SPPs were generated on shining a red beam into the gold film via a Kretschmann configuration, resulting in the injection of hot electrons into CdS nanoparticles. A recently developed plasmonic microscopy method was employed to monitor the entire process, providing the ability to image a single nanoparticle to visualize the bidirectional electron transfer dynamics in a Schottky junction involving propagating SPPs. The present study advances the understanding of the mechanism of hot electron transfer, which is anticipated to aid in the rational design and optimization of plasmonic-semiconductor hybrid nanomaterials with broad applications in photocatalysis, photovoltaic devices, and photoelectrochemical sensing.
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Affiliation(s)
- Zhimin Li
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
| | - Yimin Fang
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
| | - Yongjie Wang
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
| | - Yingyan Jiang
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
| | - Tao Liu
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
| | - Wei Wang
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , China .
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27
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Yang L, Hakki A, Wang F, Macphee DE. Different Roles of Water in Photocatalytic DeNOx Mechanisms on TiO 2: Basis for Engineering Nitrate Selectivity? ACS APPLIED MATERIALS & INTERFACES 2017; 9:17034-17041. [PMID: 28474882 DOI: 10.1021/acsami.7b01989] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The nitrate selectivity of TiO2 has important consequences for its efficiency as a NOx depollution photocatalyst. Most emphasis is typically given to photocatalyst activity, a measure of the rate at which NOx concentrations are reduced, but a reduction in NOx concentration (mainly NO + NO2) is not necessarily a reduction in atmospheric NO2 concentration because the catalytic process itself generates NO2. With NO2 being considerably more toxic than NO, more emphasis on nitrate selectivity, a measure of the NOx conversion to nitrate, and how to maximize it, should be given in engineering photocatalytic systems for improved urban air quality. This study, on the importance of adsorbed water in the photocatalytic oxidation of NOx, has identified important correlations which differentiate the role that water plays in the oxidation of NO and NO2. This observation is significant and offers insights into controlling nitrate selectivity on TiO2 and the potential for increased effectiveness in environmental photocatalyst applications.
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Affiliation(s)
- Lu Yang
- Department of Chemistry, University of Aberdeen , Meston Building, Meston Walk, AB24 3UE Aberdeen, Scotland, United Kingdom
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology , 122# Luoshi Road, Wuhan 430070, China
| | - Amer Hakki
- Department of Chemistry, University of Aberdeen , Meston Building, Meston Walk, AB24 3UE Aberdeen, Scotland, United Kingdom
| | - Fazhou Wang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology , 122# Luoshi Road, Wuhan 430070, China
| | - Donald E Macphee
- Department of Chemistry, University of Aberdeen , Meston Building, Meston Walk, AB24 3UE Aberdeen, Scotland, United Kingdom
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28
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Bloh JZ, Marschall R. Heterogeneous Photoredox Catalysis: Reactions, Materials, and Reaction Engineering. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601591] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jonathan Z. Bloh
- DECHEMA Research Institute; Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Roland Marschall
- Institute of Physical Chemistry; Justus Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
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29
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Mikhaylov RV, Glazkova NI, Nikitin KV. Photostimulated oxygen isotope exchange between N18O and anatase TiO2 under light irradiation. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.09.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Patzsch J, Folli A, Macphee DE, Bloh JZ. On the underlying mechanisms of the low observed nitrate selectivity in photocatalytic NOxabatement and the importance of the oxygen reduction reaction. Phys Chem Chem Phys 2017; 19:32678-32686. [DOI: 10.1039/c7cp05960d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Semiconductor photocatalysis could be an effective means to combat air pollution, especially nitrogen oxides, which can be mineralized to nitrate.
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Affiliation(s)
- Julia Patzsch
- DECHEMA-Forschungsinstitut
- Theodor-Heuss-Allee 25
- Germany
| | - Andrea Folli
- School of Chemistry
- Cardiff University
- Main Building
- Cardiff CF10 3AT
- Wales
| | - Donald E. Macphee
- University of Aberdeen
- Department of Chemistry
- Meston Walk
- Aberdeen AB24 3UE
- UK
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31
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Mothes F, Böge O, Herrmann H. A chamber study on the reactions of O3, NO, NO2 and selected VOCs with a photocatalytically active cementitious coating material. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:15250-15261. [PMID: 27102618 DOI: 10.1007/s11356-016-6612-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
Chamber studies were performed to investigate the efficiency of a photocatalytically active cementitious coating material to depollute contaminated air. The results showed a photocatalytic effect on ozone (O3), proven by an increase of the geometric uptake coefficient from 5.2 × 10(-6) for the inactive to 7.7 × 10(-6) for the active material under irradiation. Measured first-order rate constants for nitrogen oxides (NOx) under irradiation are in the range of 2.6-5.9 × 10(-4) s(-1), which is significantly higher compared to the inactive material (7.3-9.7 × 10(-5) s(-1)) demonstrating the photocatalytic effect. However, no significant photocatalytic degradation was observed for the studied volatile organic compounds (VOCs) toluene and isoprene resulting in only an upper limit uptake coefficient of 5.0 × 10(-7) for both VOCs. In all experiments using the photocatalytically active material, a clear formation of small carbonyl (C1-C5) gas phase compounds was identified which is suggested to result from the photocatalytic degradation of organic additives. In contrast to the uptake observed for pure O3, during the experiments with NOx (≥50 % relative humidity), a clear photocatalytic formation of O3 was observed. For the material investigated, an empirically derived overall zero-order rate constant of k 0 (O3) ≈ 5 × 10(7) molecules cm(-3) s(-1) was determined. The results demonstrate the necessity of detailed studies of heterogeneous reactions on such surfaces under more complex simulated atmospheric conditions as enabled by simulation chambers.
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Affiliation(s)
- F Mothes
- Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Permoserstraße 15, 04318, Leipzig, Germany
| | - O Böge
- Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Permoserstraße 15, 04318, Leipzig, Germany
| | - H Herrmann
- Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Permoserstraße 15, 04318, Leipzig, Germany.
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32
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33
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Nitrogen-modified nano-titania: True phase composition, microstructure and visible-light induced photocatalytic NO abatement. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2015.08.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Todorova N, Giannakopoulou T, Pomoni K, Yu J, Vaimakis T, Trapalis C. Photocatalytic NOx oxidation over modified ZnO/TiO2 thin films. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.11.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Yamamoto A, Mizuno Y, Teramura K, Hosokawa S, Tanaka T. Noble-Metal-Free NOx Storage over Ba-Modified TiO2 Photocatalysts under UV-Light Irradiation at Low Temperatures. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00151] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akira Yamamoto
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yuto Mizuno
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kentaro Teramura
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8520, Japan
- Precursory
Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Saburo Hosokawa
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8520, Japan
| | - Tsunehiro Tanaka
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8520, Japan
- Precursory
Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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36
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Abstract
Photocatalytic NOxabatement is typically accompanied by the release of several potentially dangerous intermediates during the reaction. Herein, we discuss and offer solutions to this problem
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Affiliation(s)
- Jonathan Z. Bloh
- University of Aberdeen
- Department of Chemistry
- Aberdeen AB24 3UE, UK
| | - Andrea Folli
- University of Aberdeen
- Department of Chemistry
- Aberdeen AB24 3UE, UK
- Danish Technological Institute
- 2630 Taastrup, Denmark
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