Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants
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A review on advanced photochemical processes influencing properties of materials is presented. Particular emphasis is given on photolytic processes for the removal of pollutants. Separately are presented methods for the removal of biological pollution. Major concern is paid to the methods for removal of persistent chemical pollutants. Two major groups of processes are known: homogenous and heterogeneous photocatalytic methods. The heterogeneous photocatalysis is usually done with semiconductor nanoparticles, capable to absorb light. In semiconductor the absorption of light quanta is connected with the promotion of electron(s) from valence to conduction band, leaving a positively charged hole(s) in CB. Electrons and holes can react with adsorbed molecules including water molecules. In this way the reactive intermediates are produced, which upon the sequence of reactions end with complete mineralization of ingredients. The scaling-up of heterogeneous photocatalytic process is closely con...nected with efficacy of them. As a matter of fact, many factors are involved in kinetics of photocatalysis: concentration of pollutants; concentration of catalyst; temperature; radiant flux; quantum yield; dopants; etc. The interrelations among various parameters are mostly nonlinear, and construction of the photoreactor is very demanding task. In last 30 years a lot of study was done, and general conclusion is that TiO2 (mostly anatase) is most efficient photocatalyst, but there is a lot of work needed on improvement of such processes.
Кључне речи:
photocatalysis / semiconductor photocatalysts / enhanced degradation of pollutants / doped photocatalystsИзвор:
Journal of Engineering & Processing Management, 2014, 6, 1, 15-48Издавач:
- Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology
Финансирање / пројекти:
URI
https://jepm.tfzv.ues.rs.ba/index.php/Journal/article/view/53https://cer.ihtm.bg.ac.rs/handle/123456789/3907
Институција/група
IHTMTY - JOUR AU - Juranić, Ivan PY - 2014 UR - https://jepm.tfzv.ues.rs.ba/index.php/Journal/article/view/53 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3907 AB - A review on advanced photochemical processes influencing properties of materials is presented. Particular emphasis is given on photolytic processes for the removal of pollutants. Separately are presented methods for the removal of biological pollution. Major concern is paid to the methods for removal of persistent chemical pollutants. Two major groups of processes are known: homogenous and heterogeneous photocatalytic methods. The heterogeneous photocatalysis is usually done with semiconductor nanoparticles, capable to absorb light. In semiconductor the absorption of light quanta is connected with the promotion of electron(s) from valence to conduction band, leaving a positively charged hole(s) in CB. Electrons and holes can react with adsorbed molecules including water molecules. In this way the reactive intermediates are produced, which upon the sequence of reactions end with complete mineralization of ingredients. The scaling-up of heterogeneous photocatalytic process is closely connected with efficacy of them. As a matter of fact, many factors are involved in kinetics of photocatalysis: concentration of pollutants; concentration of catalyst; temperature; radiant flux; quantum yield; dopants; etc. The interrelations among various parameters are mostly nonlinear, and construction of the photoreactor is very demanding task. In last 30 years a lot of study was done, and general conclusion is that TiO2 (mostly anatase) is most efficient photocatalyst, but there is a lot of work needed on improvement of such processes. PB - Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology T2 - Journal of Engineering & Processing Management T1 - Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants VL - 6 IS - 1 SP - 15 EP - 48 DO - 10.7251/JEPMEN1406015J ER -
@article{ author = "Juranić, Ivan", year = "2014", abstract = "A review on advanced photochemical processes influencing properties of materials is presented. Particular emphasis is given on photolytic processes for the removal of pollutants. Separately are presented methods for the removal of biological pollution. Major concern is paid to the methods for removal of persistent chemical pollutants. Two major groups of processes are known: homogenous and heterogeneous photocatalytic methods. The heterogeneous photocatalysis is usually done with semiconductor nanoparticles, capable to absorb light. In semiconductor the absorption of light quanta is connected with the promotion of electron(s) from valence to conduction band, leaving a positively charged hole(s) in CB. Electrons and holes can react with adsorbed molecules including water molecules. In this way the reactive intermediates are produced, which upon the sequence of reactions end with complete mineralization of ingredients. The scaling-up of heterogeneous photocatalytic process is closely connected with efficacy of them. As a matter of fact, many factors are involved in kinetics of photocatalysis: concentration of pollutants; concentration of catalyst; temperature; radiant flux; quantum yield; dopants; etc. The interrelations among various parameters are mostly nonlinear, and construction of the photoreactor is very demanding task. In last 30 years a lot of study was done, and general conclusion is that TiO2 (mostly anatase) is most efficient photocatalyst, but there is a lot of work needed on improvement of such processes.", publisher = "Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology", journal = "Journal of Engineering & Processing Management", title = "Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants", volume = "6", number = "1", pages = "15-48", doi = "10.7251/JEPMEN1406015J" }
Juranić, I.. (2014). Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants. in Journal of Engineering & Processing Management Bosnia and Herzegovina : University of East Sarajevo, Faculty of Technology., 6(1), 15-48. https://doi.org/10.7251/JEPMEN1406015J
Juranić I. Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants. in Journal of Engineering & Processing Management. 2014;6(1):15-48. doi:10.7251/JEPMEN1406015J .
Juranić, Ivan, "Effect of light on the aging, corrosion, and degradation of materials, in relation to the enhanced removal of organic pollutants" in Journal of Engineering & Processing Management, 6, no. 1 (2014):15-48, https://doi.org/10.7251/JEPMEN1406015J . .