ACS Environmental Au最新文献_第6页

IF 6.7

ACS Environmental Au Pub Date : 2025-03-19

Paul D. Goring, Amelia Newman, Christopher W. Jones* and Shelley D. Minteer*,

引用次数: 0

IF 6.7

ACS Environmental Au Pub Date : 2025-03-19

引用次数: 0

IF 6.7

ACS Environmental Au Pub Date : 2025-03-19

Hang Li, Blair Hanson and Garrett McKay*,

引用次数: 0

Hydroxyl Dicarboxylic Acids at a Mountainous Site in Hong Kong: Formation Mechanisms and Implications for Particle Growth 香港山区羟基二羧酸的形成机制及其对颗粒生长的影响

IF 6.7

ACS Environmental Au Pub Date : 2025-03-14 DOI: 10.1021/acsenvironau.4c0011910.1021/acsenvironau.4c00119

Hongyong Li, Xiaopu Lyu*, Likun Xue*, Yunxi Huo, Tianshu Chen, Dawen Yao, Haoxian Lu, Beining Zhou and Hai Guo*,

{"title":"Hydroxyl Dicarboxylic Acids at a Mountainous Site in Hong Kong: Formation Mechanisms and Implications for Particle Growth","authors":"Hongyong Li, Xiaopu Lyu*, Likun Xue*, Yunxi Huo, Tianshu Chen, Dawen Yao, Haoxian Lu, Beining Zhou and Hai Guo*, ","doi":"10.1021/acsenvironau.4c0011910.1021/acsenvironau.4c00119","DOIUrl":"https://doi.org/10.1021/acsenvironau.4c00119https://doi.org/10.1021/acsenvironau.4c00119","url":null,"abstract":"Secondary organic aerosol (SOA) has been shown to significantly impact climate, air quality, and human health. Hydroxyl dicarboxylic acids (OHDCA) are generally of secondary origin and ubiquitous in the atmosphere, with high concentrations in South China. This study explored the formation of representative OHDCA species based on time-resolved measurements and explainable machine learning. Malic acid, the most commonly studied OHDCA, had higher concentrations in the noncontinental air (63.7 ± 33.3 ng m–3) than in the continental air (7.5 ± 1.4 ng m–3). Machine learning quantitatively revealed the high relative importance of aromatics and monoterpenes SOA, as well as aqueous processes, in the noncontinental air, due to either shared precursors or similar formation pathways. Isoprene SOA, particle surface area, and ozone corrected for titration loss (Ox) also elevated the concentrations of malic acid in the continental air. Aqueous photochemical formation of malic acid was confirmed given the synergy between LWC, temperature, and Ox. Moreover, the OHDCA-like SOA might have facilitated a relatively rare particle growth from early afternoon to midnight in the case with the highest malic acid concentrations. This study enhances our understanding of the formation of OHDCA and its climate impacts.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":"5 3","pages":"277–286 277–286"},"PeriodicalIF":6.7,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsenvironau.4c00119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydroxyl Dicarboxylic Acids at a Mountainous Site in Hong Kong: Formation Mechanisms and Implications for Particle Growth. 香港山区羟基二羧酸的形成机制及其对颗粒生长的影响。

IF 6.7

ACS Environmental Au Pub Date : 2025-03-14 eCollection Date: 2025-05-21 DOI: 10.1021/acsenvironau.4c00119

Hongyong Li, Xiaopu Lyu, Likun Xue, Yunxi Huo, Tianshu Chen, Dawen Yao, Haoxian Lu, Beining Zhou, Hai Guo

{"title":"Hydroxyl Dicarboxylic Acids at a Mountainous Site in Hong Kong: Formation Mechanisms and Implications for Particle Growth.","authors":"Hongyong Li, Xiaopu Lyu, Likun Xue, Yunxi Huo, Tianshu Chen, Dawen Yao, Haoxian Lu, Beining Zhou, Hai Guo","doi":"10.1021/acsenvironau.4c00119","DOIUrl":"10.1021/acsenvironau.4c00119","url":null,"abstract":"Secondary organic aerosol (SOA) has been shown to significantly impact climate, air quality, and human health. Hydroxyl dicarboxylic acids (OHDCA) are generally of secondary origin and ubiquitous in the atmosphere, with high concentrations in South China. This study explored the formation of representative OHDCA species based on time-resolved measurements and explainable machine learning. Malic acid, the most commonly studied OHDCA, had higher concentrations in the noncontinental air (63.7 ± 33.3 ng m-3) than in the continental air (7.5 ± 1.4 ng m-3). Machine learning quantitatively revealed the high relative importance of aromatics and monoterpenes SOA, as well as aqueous processes, in the noncontinental air, due to either shared precursors or similar formation pathways. Isoprene SOA, particle surface area, and ozone corrected for titration loss (O x ) also elevated the concentrations of malic acid in the continental air. Aqueous photochemical formation of malic acid was confirmed given the synergy between LWC, temperature, and O x . Moreover, the OHDCA-like SOA might have facilitated a relatively rare particle growth from early afternoon to midnight in the case with the highest malic acid concentrations. This study enhances our understanding of the formation of OHDCA and its climate impacts.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":"5 3","pages":"277-286"},"PeriodicalIF":6.7,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144143784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silver-Doped Porous Copper Catalysts for Efficient Resource Utilization of CO-Containing Flue Gases 含co烟气资源高效利用的掺银多孔铜催化剂

IF 6.7

ACS Environmental Au Pub Date : 2025-03-03 DOI: 10.1021/acsenvironau.4c0012110.1021/acsenvironau.4c00121

Zhengkai Zhuang, Guangtao Wang, Wen Zhao, Ruixin Yang, Yilin Zhou and Wenlei Zhu*,

{"title":"Silver-Doped Porous Copper Catalysts for Efficient Resource Utilization of CO-Containing Flue Gases","authors":"Zhengkai Zhuang, Guangtao Wang, Wen Zhao, Ruixin Yang, Yilin Zhou and Wenlei Zhu*, ","doi":"10.1021/acsenvironau.4c0012110.1021/acsenvironau.4c00121","DOIUrl":"https://doi.org/10.1021/acsenvironau.4c00121https://doi.org/10.1021/acsenvironau.4c00121","url":null,"abstract":"CO is both a key intermediate in the electrocatalytic conversion of CO2 and a valuable C1 resource, with the potential to reduce carbon emissions and mitigate the energy crisis. However, industrially emitted CO remains underutilized due to inefficiencies and economic challenges. Electrocatalytic CO reduction offers a promising approach for the efficient and environmentally friendly utilization of CO-containing flue gases. Nevertheless, current technologies face limitations, such as low operating currents and difficulties in adaptation to complex reaction gas components. Here, we report a low-cost silver-doped porous copper oxide (Ag-pCuO) catalyst. The doping of a moderate amount of Ag (0.875% doping) endows porous CuO with highly selective Cu–Ag active sites, enhanced CO adsorption, and improved surface valence stability, allowing Ag0.875%-pCuO to achieve remarkable catalytic performance in a carbon-doped titanium-based membrane electrode assembly electrolytic cell. It achieves a remarkable C2+ faradic efficiency of up to 94% at a high current density of −4 A under a simulated calcium carbide furnace gas atmosphere and demonstrates exceptional stability, with only a 6.08% decline in C2+ faradic efficiency after over 110 h of continuous operation. In summary, this research presents a novel approach for applying Ag-doped copper-based catalysts to industrially utilize CO-containing flue gases, especially from calcium carbide furnaces.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":"5 3","pages":"287–297 287–297"},"PeriodicalIF":6.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsenvironau.4c00121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silver-Doped Porous Copper Catalysts for Efficient Resource Utilization of CO-Containing Flue Gases. 含co烟气资源高效利用的掺银多孔铜催化剂

IF 6.7

ACS Environmental Au Pub Date : 2025-03-03 eCollection Date: 2025-05-21 DOI: 10.1021/acsenvironau.4c00121

Zhengkai Zhuang, Guangtao Wang, Wen Zhao, Ruixin Yang, Yilin Zhou, Wenlei Zhu

{"title":"Silver-Doped Porous Copper Catalysts for Efficient Resource Utilization of CO-Containing Flue Gases.","authors":"Zhengkai Zhuang, Guangtao Wang, Wen Zhao, Ruixin Yang, Yilin Zhou, Wenlei Zhu","doi":"10.1021/acsenvironau.4c00121","DOIUrl":"10.1021/acsenvironau.4c00121","url":null,"abstract":"CO is both a key intermediate in the electrocatalytic conversion of CO2 and a valuable C1 resource, with the potential to reduce carbon emissions and mitigate the energy crisis. However, industrially emitted CO remains underutilized due to inefficiencies and economic challenges. Electrocatalytic CO reduction offers a promising approach for the efficient and environmentally friendly utilization of CO-containing flue gases. Nevertheless, current technologies face limitations, such as low operating currents and difficulties in adaptation to complex reaction gas components. Here, we report a low-cost silver-doped porous copper oxide (Ag-pCuO) catalyst. The doping of a moderate amount of Ag (0.875% doping) endows porous CuO with highly selective Cu-Ag active sites, enhanced CO adsorption, and improved surface valence stability, allowing Ag0.875%-pCuO to achieve remarkable catalytic performance in a carbon-doped titanium-based membrane electrode assembly electrolytic cell. It achieves a remarkable C2+ faradic efficiency of up to 94% at a high current density of -4 A under a simulated calcium carbide furnace gas atmosphere and demonstrates exceptional stability, with only a 6.08% decline in C2+ faradic efficiency after over 110 h of continuous operation. In summary, this research presents a novel approach for applying Ag-doped copper-based catalysts to industrially utilize CO-containing flue gases, especially from calcium carbide furnaces.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":"5 3","pages":"287-297"},"PeriodicalIF":6.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100544/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144143786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Celebrating 5 Years of the ACS Au Journal Family. 庆祝ACS Au期刊家族成立五周年。

IF 6.7

ACS Environmental Au Pub Date : 2025-02-25 eCollection Date: 2025-03-19 DOI: 10.1021/acsenvironau.5c00020

Paul D Goring, Amelia Newman, Christopher W Jones, Shelley D Minteer

引用次数: 0

Celebrating 5 Years of the ACS Au Journal Family 庆祝ACS Au期刊家族成立五周年

IF 6.7

ACS Environmental Au Pub Date : 2025-02-25 DOI: 10.1021/acsenvironau.5c0002010.1021/acsenvironau.5c00020

Paul D. Goring, Amelia Newman, Christopher W. Jones* and Shelley D. Minteer*,

引用次数: 0

Evaluating Powdered Activated Carbon for Adsorption of Nitrogenous Organics in Water Using HDPairFinder 用HDPairFinder评价粉状活性炭对水中含氮有机物的吸附性能

IF 6.7

ACS Environmental Au Pub Date : 2025-02-14 DOI: 10.1021/acsenvironau.4c0013310.1021/acsenvironau.4c00133

Di Zhang, Qiming Shen and Xing-Fang Li*,

{"title":"Evaluating Powdered Activated Carbon for Adsorption of Nitrogenous Organics in Water Using HDPairFinder","authors":"Di Zhang, Qiming Shen and Xing-Fang Li*, ","doi":"10.1021/acsenvironau.4c0013310.1021/acsenvironau.4c00133","DOIUrl":"https://doi.org/10.1021/acsenvironau.4c00133https://doi.org/10.1021/acsenvironau.4c00133","url":null,"abstract":"Amino-containing compounds are key precursors to highly toxic nitrogenous disinfection byproducts (DBPs) and odorous DBPs, posing a critical challenge for drinking water utilities. This study systematically evaluated the adsorption performance of six commercial powdered activated carbons (PACs) for removing soluble amino-containing compounds using amino acids as model compounds. Among them, PHF and AN PAC demonstrated superior removal efficiencies for six tested amino acids, ranging from 77 to 98% for PHF PAC and 83 to 96% for AN PAC. Subsequent analysis focused on PHF, AN, and HB PACs to investigate adsorption kinetics and effects of water parameters, including initial amino acid concentration, pH, and natural organic matter (NOM) on removal efficiencies. Optimal removal efficiencies were observed for PHF and AN PACs at pH levels between 6 and 8, while increased NOM levels significantly reduced amino acid adsorption. Finally, a hydrogen/deuterium isotopic labeling-based nontargeted analysis was applied to evaluate the removal of amino-containing compounds from source water (represented by Suwannee River standard reference materials). PHF exhibited the highest removal efficiency, achieving a 47% reduction in the total ion chromatogram (TIC) intensity of labeled amino-containing features, followed by AN at 21% and HB at 19%. The decrease in the TIC intensity and number of labeled amino-containing features aligned with the trends observed in adsorption, establishes a consistent ranking of PHF > AN > HB PAC. PAC can be seamlessly integrated into existing drinking water treatment processes and applied on an as-needed basis. Our results could provide valuable guidance for its effective application in water treatment plants.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":"5 3","pages":"308–318 308–318"},"PeriodicalIF":6.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsenvironau.4c00133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144097986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0