Photochemical Degradation of Organic Matter in the Atmosphere

Hu, Wei; Liu, Dandan; Su, Sihui; Ren, Lujie; Ren, Hong; Wei, Lianfang; Yue, Siyao; Xie, Qiaorong; Zhang, Zhimin; Wang, Zihan; Yang, Ning; Wu, Liguang; Deng, Junjun; Qi, Yulin; Fu, Pingqing

doi:10.1002/adsu.202100027

Cited by 20 publications

(5 citation statements)

References 221 publications

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“…BrC primarily comes from biomass burning and fossil fuel combustion, whereas the secondary sources include photochemical reactions of anthropogenic or biogenic secondary organic aerosol precursors, [209][210][211][212] and heterogenous reactions with NO x . [210][211][212][213] The complex matrices of BrC make it difficult to determine every component of BrC, but there are several representative compounds that have been proved to be BrC, such as HULIS, nitroaromatics, PAHs, and vanillin. [210][211][212]214 LACs can undergo long-range atmospheric transport (LRAT) and then deposit on the surface of snow and glaciers.…”

Section: Sources Of Lacsmentioning

confidence: 99%

Snow particles physiochemistry: feedback on air quality, climate change, and human health

Rangel-Alvarado

Ariya

2022

Environ. Sci.: Atmos.

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Section: Sources Of Lacsmentioning

confidence: 99%

Snow particles physiochemistry: feedback on air quality, climate change, and human health

Rangel-Alvarado

Ariya

2022

Environ. Sci.: Atmos.

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“…OVOCs can form SVOCs and NVOCs through free-radical reactions, thus forming SOA [43]. OVOCs can also be further oxidized and decomposed into small molecules, such as alcohols, aldehydes, ketones, ethers, or acids, and finally oxidized to CO 2 [6,117]. There are three main ways by which the effects of small-molecule organic matter on atmospheric heterogeneous reactions are produced:…”

Section: Heterogeneous Reactions Of Mixedmentioning

confidence: 99%

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

et al. 2022

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Haze is the phenomenon of visibility degradation caused by extinction effects related to the physicochemical properties of atmospheric particulate matter (APM). Atmosphere heterogeneous reactions can alter the physicochemical properties of APM. Therefore, it is important to understand the atmospheric heterogeneous reactions of APM in order to reveal the cause of haze. Herein, the current situation, developmental trend, source, and composition of APM pollution in China are reviewed. Additionally, we introduce the reaction characteristics and key chemical processes of common inorganic, organic, and mixed pollutant gases on the surface of mineral particles. The effects of mineral particulate matter on aggregation, regulation, and catalysis in the formation of atmospheric aerosols and the synergistic reaction mechanism of SO2, NO2, O3, and VOCs on the surfaces of different mineral particles are summarized. The problems existing in the current research on heterogeneous reactions on the surfaces of mineral particles are also evaluated. This paper aims to gain a deep understanding of the mechanism of mineral particulate matter promoting the formation of secondary aerosols and attempts to provide theoretical support for effective haze control.

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“…Over the past several years, photochemistry has undergone a renaissance. 31 In addition, metal-based photocatalysts were involved in studies of Sharma et al 32 where magnetic spinel ferrites MFe 2 O 4 (M = Cu, Zn, Ni, and Co) were used in the photo-Fenton process which described the degradation of MB; the addition of H 2 O 2 showed that CuFe 2 O 4 has high reactivity as compared to others such as ZnFe 2 O 4 , NiFe 2 O 4 , CoFe 2 O 4 , 33 TiO 2 , ZnO, and plasmonic metals (like Ag, Au, and pt) which were also successfully employed for efficient degradation but their potential for photoredox catalysis to create novel reactivity is limited by conventional polar reactions. 34 Many efficient catalysts have been introduced by researchers in the past, but organo-photooxidative materials have been recently explored because of their oxidative properties and stability.…”

Section: Introductionmentioning

confidence: 99%

Green Organo-Photooxidative Method for the Degradation of Methylene Blue Dye

Majeed,

Ibrahim,

Al-Rawi

et al. 2024

ACS Omega

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This study used an organophoto-oxidative material to degrade the toxic azo dye, methylene blue (MB), due to its hazardous effects on aquatic life and humans. MB is traditionally degraded using metal-based catalysts, resulting in high costs. Several organic acids were screened for organo-photooxidative applications against various azo dyes, and ascorbic acid (AA), also known as vitamin C, was found to be best for degradation due to its high photooxidative activity. It is an eco-friendly, edible, and efficient photooxidative material. A photocatalytic box has been developed for the study of organo-photooxidative activity. It was found that when AA was added, degradation efficiency increased from 42 to 95% within 240 min. Different characterization techniques, such as HPLC and GC-MS, were used after degradation for the structural elucidation of degraded products. DFT study was done for the investigation of the mechanistic study behind the degradation process. A statistical tool, RSM, was used for the optimization of parameters (concentration of dye, catalyst, and time). This study develops sustainable and effective solutions for wastewater treatment.

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Photochemical Degradation of Organic Matter in the Atmosphere

Abstract: Scheme 7. Proposed photochemical reaction pathways for some prominent NACs and ONs in •NO 3 processed wood tar aerosols. Denitration due to both A) photolysis and B) •OH photooxidation are summarized. R' could be alky or hydrogen. Reproduced under the terms of a CC-BY license. [17]

Cited by 20 publications

References 221 publications

Snow particles physiochemistry: feedback on air quality, climate change, and human health

Snow particles physiochemistry: feedback on air quality, climate change, and human health

Research Progress on Heterogeneous Reactions of Pollutant Gases on the Surface of Atmospheric Mineral Particulate Matter in China

Green Organo-Photooxidative Method for the Degradation of Methylene Blue Dye

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