Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review

Eneşca, Alexandru; Cazan, Cristina

doi:10.3390/nano10101965

Cited by 18 publications

(10 citation statements)

References 90 publications

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“…Despite many advantages, photocatalytic purification of air or wastewater has serious limitations, such as a slow rate and low quantum efficiency. More information on the photocatalytic degradation of VOC in gas phase or decomposition of dyes, pesticides or pharmaceuticals in liquid phase can be found in recent reviews [ 265 , 268 , 269 , 270 ].…”

Section: Application Of Copper Oxide-based Materials In Photocatalysis and Photoelectrocatalysismentioning

confidence: 99%

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Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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This work aims at reviewing the most impactful results obtained on the development of Cu-based photocathodes. The need of a sustainable exploitation of renewable energy sources and the parallel request of reducing pollutant emissions in airborne streams and in waters call for new technologies based on the use of efficient, abundant, low-toxicity and low-cost materials. Photoelectrochemical devices that adopts abundant element-based photoelectrodes might respond to these requests being an enabling technology for the direct use of sunlight to the production of energy fuels form water electrolysis (H2) and CO2 reduction (to alcohols, light hydrocarbons), as well as for the degradation of pollutants. This review analyses the physical chemical properties of Cu2O (and CuO) and the possible strategies to tune them (doping, lattice strain). Combining Cu with other elements in multinary oxides or in composite photoelectrodes is also discussed in detail. Finally, a short overview on the possible applications of these materials is presented.

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Section: Application Of Copper Oxide-based Materials In Photocatalysis and Photoelectrocatalysismentioning

confidence: 99%

“… Schematic mechanism of photocatalytic formation of ROS from [ 268 ] with permission of American Chemical Society. …”

Section: Figurementioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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“…The generally accepted model of PCO [36] indicates that the electrons and holes diffuse to the surface of the photocatalysts and react with the VOCs. However, the alternate path of electrons and holes is to recombine before decomposing the VOCs, which clearly undermines the efficiency of VOC decomposition.…”

Section: Undoped Metal-containing Photocatalysts For the Removal Of Vocsmentioning

confidence: 99%

Nano Metal-Containing Photocatalysts for the Removal of Volatile Organic Compounds: Doping, Performance, and Mechanisms

et al. 2022

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Volatile organic compounds (VOCs) in indoor air are considered a major threat to human health and environmental safety. The development of applicable technologies for the removal of VOCs is urgently needed. Nowadays, photocatalytic oxidation (PCO) based on metal-containing photocatalysts has been regarded as a promising method. However, unmodified photocatalysts are generally limited in applications because of the narrow light response range and high recombination rate of photo-generated carriers. As a result, nano metal-containing photocatalysts doped with elements or other materials have attracted much attention from researchers and has developed over the past few decades. In addition, different doping types cause different levels of catalyst performance, and the mechanism for performance improving is also different. However, there are few reviews focusing on this aspect, which is really important for catalyst design and application. This work aims to give a comprehensive overview of nano metal-containing photocatalysts with different doping types for the removal of VOCs in an indoor environment. First, the undoped photocatalysts and the basic mechanism of PCO is introduced. Then, the application of metal doping, non-metal doping, co-doping, and other material doping in synthetic metal-containing photocatalysts are discussed and compared, respectively, and the synthesis methods, removal efficiency, and mechanisms are further investigated. Finally, a development trend for using nano metal-containing photocatalysts for the removal of VOCs in the future is proposed. This work provides a meaningful reference for selecting effective strategies to develop novel photocatalysts for the removal of VOCs in the future.

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“…In particular, VOCs, which are indoor air pollutants, are affected by the environment, such as closed places and humidity. The concentration can be higher indoors than outdoors, resulting in dangerous conditions [ 6 , 7 , 8 ]. The most well-known term associated with indoor air quality pollution is sick building syndrome (SBS).…”

Section: Introductionmentioning

confidence: 99%

Functional Microfiber Nonwoven Fabric with Copper Ion-Immobilized Polymer Brush for Detection and Adsorption of Acetone Gas

Kim

Uezu

2021

Sensors

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The detection and removal of volatile organic compounds (VOCs) are emerging as an important problem in modern society. In this study, we attempted to develop a new material capable of detecting or adsorbing VOCs by introducing a new functional group and immobilizing metal ions into a microfiber nonwoven fabric (MNWF) made through radiation-induced graft polymerization. The suitable metal complex was selected according to the data in “Cambridge Crystallographic Data Center (CCDC)”. 4-picolylamine (4-AMP), designated as a ligand through the metal complex data of CCDC, was introduced at an average mole conversion rate of 63%, and copper ions were immobilized at 0.51 mmol/g to the maximum. It was confirmed that degree of grafting (dg) 170% 4-AMP-Cu MNWF, where copper ions are immobilized, can adsorb up to 50% of acetone gas at about 50 ppm, 0.04 mmol/g- 4-AMP-Cu-MNWF, at room temperature and at a ratio of copper ion to adsorbed acetone of 1:10.

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Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review

Cited by 18 publications

References 90 publications

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Nano Metal-Containing Photocatalysts for the Removal of Volatile Organic Compounds: Doping, Performance, and Mechanisms

Functional Microfiber Nonwoven Fabric with Copper Ion-Immobilized Polymer Brush for Detection and Adsorption of Acetone Gas

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