Journal of Environmental Sciences-china最新文献

Roles of naturally occurring biogenic iron-manganese oxides (BFMO) in PMS-based environmental remediation: A complete electron transfer pathway

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-03-01 DOI: 10.1016/j.jes.2024.11.011

Feng Hu , Lite Meng , Mei Wang , Yunhui Zhang , Zuxin Xu

Bisphenol A (BPA) is a pervasive endocrine disruptor that enters the environment through anthropogenic activities, posing significant risks to ecosystems and human health. Advanced oxidation processes (AOPs) are promising methods for the removal of organic microcontaminants in the environment. Biogenic manganese oxides (BMO) are reported as catalysts due to their transition metal nature, and are also readily generated by manganese-oxidizing microorganisms in the natural environment, and therefore their roles and effects in AOPs-based environmental remediation should be investigated. However, biogenic iron-manganese oxides (BFMO) are actually generated rather than BMO due to the coexistence of ferrous ions which can be oxidized to iron oxides. Therefore, this study produced BFMO originating from a highly efficient manganese-oxidizing fungus Cladosporium sp. XM01 and chose peroxymonosulfate (PMS) as a typical oxidant for the degradation of bisphenol A (BPA), a model organic micropollutant. Characterization results indicate that the formed BFMO was amorphous with a low crystallinity. The BFMO/PMS system achieved a high degradation performance that 85 % BPA was rapidly degraded within 60 min, and therefore the contribution of BFMO cannot be ignored during PMS-based environmental remediation. Different from the findings of previous studies (mostly radicals and singlet oxygen), the degradation mechanism was first proven as a 100 % electron-transfer pathway mediated by high-valence Mn under acidic conditions provided by PMS. The findings of this study provide new insights into the degradation mechanisms of pollutants using biogenic metal oxides in PMS activation and the contribution of their coexistence in AOPs-based environmental remediation.

{"title":"Roles of naturally occurring biogenic iron-manganese oxides (BFMO) in PMS-based environmental remediation: A complete electron transfer pathway","authors":"Feng Hu , Lite Meng , Mei Wang , Yunhui Zhang , Zuxin Xu","doi":"10.1016/j.jes.2024.11.011","DOIUrl":"10.1016/j.jes.2024.11.011","url":null,"abstract":"<div><div>Bisphenol A (BPA) is a pervasive endocrine disruptor that enters the environment through anthropogenic activities, posing significant risks to ecosystems and human health. Advanced oxidation processes (AOPs) are promising methods for the removal of organic microcontaminants in the environment. Biogenic manganese oxides (BMO) are reported as catalysts due to their transition metal nature, and are also readily generated by manganese-oxidizing microorganisms in the natural environment, and therefore their roles and effects in AOPs-based environmental remediation should be investigated. However, biogenic iron-manganese oxides (BFMO) are actually generated rather than BMO due to the coexistence of ferrous ions which can be oxidized to iron oxides. Therefore, this study produced BFMO originating from a highly efficient manganese-oxidizing fungus Cladosporium sp. XM01 and chose peroxymonosulfate (PMS) as a typical oxidant for the degradation of bisphenol A (BPA), a model organic micropollutant. Characterization results indicate that the formed BFMO was amorphous with a low crystallinity. The BFMO/PMS system achieved a high degradation performance that 85 % BPA was rapidly degraded within 60 min, and therefore the contribution of BFMO cannot be ignored during PMS-based environmental remediation. Different from the findings of previous studies (mostly radicals and singlet oxygen), the degradation mechanism was first proven as a 100 % electron-transfer pathway mediated by high-valence Mn under acidic conditions provided by PMS. The findings of this study provide new insights into the degradation mechanisms of pollutants using biogenic metal oxides in PMS activation and the contribution of their coexistence in AOPs-based environmental remediation.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 795-805"},"PeriodicalIF":5.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of photocatalytic activity of novel PrBiFeO3 perovskite composites in visible-light photocatalytic decomposition reaction 新型 PrBiFeO3 包晶石复合材料在可见光光催化分解反应中的光催化活性评估

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-26 DOI: 10.1016/j.jes.2025.02.033

Sang-Chul Jung, Kyong-Hwan Chung

In this study, the visible-light photocatalytic reaction properties of perovskite catalysts was investigated with excellent visible-light sensitivity. Titanate-based and ferrite-based perovskites were introduced as light-responsive catalysts. A novel ferrite-based perovskite composite, PrBiFeO₃, was synthesized, which demonstrated significantly enhanced light absorption under both visible light and UV illumination. The composite was prepared according to a combined sol-gel and solvothermal method. The newly synthesized PrBiFeO₃ exhibited excellent absorption capabilities for both UV and visible light, with a band gap energy of about 2.0 eV. These perovskites showed photocatalytic activity in the decomposition of methylene blue and formaldehyde under visible light LED lamp illumination. Notably, the ferrite-based perovskites, including PrFeO₃, displayed better photocatalytic activity under visible light compared to the titanate-based perovskites. The novel PrBiFeO₃ composite also produced hydrogen and oxygen through water splitting under artificial sunlight and liquid plasma discharging. The amount of hydrogen produced by photocatalytic water splitting in PrBiFeO₃ under liquid plasma irradiation was approximately 50 times higher than that produced under artificial sunlight irradiation.

{"title":"Assessment of photocatalytic activity of novel PrBiFeO3 perovskite composites in visible-light photocatalytic decomposition reaction","authors":"Sang-Chul Jung, Kyong-Hwan Chung","doi":"10.1016/j.jes.2025.02.033","DOIUrl":"10.1016/j.jes.2025.02.033","url":null,"abstract":"<div><div>In this study, the visible-light photocatalytic reaction properties of perovskite catalysts was investigated with excellent visible-light sensitivity. Titanate-based and ferrite-based perovskites were introduced as light-responsive catalysts. A novel ferrite-based perovskite composite, PrBiFeO3, was synthesized, which demonstrated significantly enhanced light absorption under both visible light and UV illumination. The composite was prepared according to a combined sol-gel and solvothermal method. The newly synthesized PrBiFeO3 exhibited excellent absorption capabilities for both UV and visible light, with a band gap energy of about 2.0 eV. These perovskites showed photocatalytic activity in the decomposition of methylene blue and formaldehyde under visible light LED lamp illumination. Notably, the ferrite-based perovskites, including PrFeO3, displayed better photocatalytic activity under visible light compared to the titanate-based perovskites. The novel PrBiFeO3 composite also produced hydrogen and oxygen through water splitting under artificial sunlight and liquid plasma discharging. The amount of hydrogen produced by photocatalytic water splitting in PrBiFeO3 under liquid plasma irradiation was approximately 50 times higher than that produced under artificial sunlight irradiation.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 549-561"},"PeriodicalIF":5.9,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental catalytic city: New engine for air pollution control

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-25 DOI: 10.1016/j.jes.2025.02.019

Jinzhu Ma , Biwu Chu , Xiaotong Li , Huihui Wang , Qingxin Ma , Guangzhi He , Qian Liu , Shuxiao Wang , Kebin He , Jincai Zhao , Hong He

Air pollution is a major challenge to the improvement of urban environmental quality. The control of air pollution still faces severe challenges, especially in developing countries, such as ozone pollution control. Ozone is a typical secondary air pollutant, and its formation chemistry from its precursors (NO_x and volatile organic compounds) is highly nonlinear, which caused the emission reduction of its precursors is not always effective and therefore new assisted approaches to control of ozone pollution are needed. Photocatalysis and ambient catalysis technology are expected to be applied in open atmosphere as a new booster to the direct purification of air pollutants in emission sources. In this perspective, we summarize the current knowledge about the photocatalysis and ambient catalysis technology for the removal of air pollutants under natural photothermal conditions. Based on these technologies, we propose the concept of “Environmental Catalytic City”, which refers to the spontaneous purification of low concentration urban air pollutants in the atmosphere by catalytic materials coating on the artificial surfaces, such as building surfaces in the city. In this way, the urban city with self-purification function can remove air pollution without additional energy consumption. The further improvement, development, and application of the “Environmental Catalytic City” is also discussed.

{"title":"Environmental catalytic city: New engine for air pollution control","authors":"Jinzhu Ma , Biwu Chu , Xiaotong Li , Huihui Wang , Qingxin Ma , Guangzhi He , Qian Liu , Shuxiao Wang , Kebin He , Jincai Zhao , Hong He","doi":"10.1016/j.jes.2025.02.019","DOIUrl":"10.1016/j.jes.2025.02.019","url":null,"abstract":"<div><div>Air pollution is a major challenge to the improvement of urban environmental quality. The control of air pollution still faces severe challenges, especially in developing countries, such as ozone pollution control. Ozone is a typical secondary air pollutant, and its formation chemistry from its precursors (NOx and volatile organic compounds) is highly nonlinear, which caused the emission reduction of its precursors is not always effective and therefore new assisted approaches to control of ozone pollution are needed. Photocatalysis and ambient catalysis technology are expected to be applied in open atmosphere as a new booster to the direct purification of air pollutants in emission sources. In this perspective, we summarize the current knowledge about the photocatalysis and ambient catalysis technology for the removal of air pollutants under natural photothermal conditions. Based on these technologies, we propose the concept of “Environmental Catalytic City”, which refers to the spontaneous purification of low concentration urban air pollutants in the atmosphere by catalytic materials coating on the artificial surfaces, such as building surfaces in the city. In this way, the urban city with self-purification function can remove air pollution without additional energy consumption. The further improvement, development, and application of the “Environmental Catalytic City” is also discussed.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 576-583"},"PeriodicalIF":5.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bentonite supported cobalt catalyst prepared by blending method for the catalytic oxidation of desulfurization by-product sulfite: Catalytic performance and mechanism

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-24 DOI: 10.1016/j.jes.2025.02.032

Fanbo Zeng , Jing Zhu , Feng Liu , Guoyu Zhang , Weirun Li , Wenye Li , Zhiwei Shang , Hong You , Shuxiao Wang , Zhipeng Li

Wet flue gas desulfurization (WFGD) could effectively reduce sulfur dioxide emission. However, magnesium sulfite (MgSO₃), a by-product of desulfurization, was easy to result in secondary pollution. In this study, the solid catalyst Co-Bent (bentonite supported cobalt) was prepared by blending method for MgSO₃ oxidation with bentonite as the carrier and cobalt as the active component. At the calcination temperature of 550 °C and the Co loading level of 3 wt.%, the catalyst showed excellent catalytic performance for the oxidation of high concentration MgSO₃ slurry, and the oxidation rate of MgSO₃ was 0.13 mol/(L·h). The research indicated that the active component was uniformly distributed within porous structure of the catalyst as Co₃O₄, which facilitated the oxidation of SO₃²⁻ catalyzed by Co₃O₄. Kinetic researches indicated the oxidation rate of MgSO₃ was influenced by the catalyst dosage, the reaction temperature, the solution pH, the airflow rate, and the SO₃²⁻ concentration. Additionally, after recycling experiments, the regenerated catalyst retained its high catalytic performance for the MgSO₃ oxidation. The reaction mechanism for the catalytic oxidation of MgSO₃ by Co-Bent catalyst was also proposed. The generation of active free radicals (OH·, SO₄⁻·, SO₃⁻·, SO₅⁻·) accelerated the MgSO₃ oxidation. These results provide theoretical support for the treatment of MgSO₃ and the development of durable catalyst.

{"title":"Bentonite supported cobalt catalyst prepared by blending method for the catalytic oxidation of desulfurization by-product sulfite: Catalytic performance and mechanism","authors":"Fanbo Zeng , Jing Zhu , Feng Liu , Guoyu Zhang , Weirun Li , Wenye Li , Zhiwei Shang , Hong You , Shuxiao Wang , Zhipeng Li","doi":"10.1016/j.jes.2025.02.032","DOIUrl":"10.1016/j.jes.2025.02.032","url":null,"abstract":"<div><div>Wet flue gas desulfurization (WFGD) could effectively reduce sulfur dioxide emission. However, magnesium sulfite (MgSO3), a by-product of desulfurization, was easy to result in secondary pollution. In this study, the solid catalyst Co-Bent (bentonite supported cobalt) was prepared by blending method for MgSO3 oxidation with bentonite as the carrier and cobalt as the active component. At the calcination temperature of 550 °C and the Co loading level of 3 wt.%, the catalyst showed excellent catalytic performance for the oxidation of high concentration MgSO3 slurry, and the oxidation rate of MgSO3 was 0.13 mol/(L·h). The research indicated that the active component was uniformly distributed within porous structure of the catalyst as Co3O4, which facilitated the oxidation of SO32− catalyzed by Co3O4. Kinetic researches indicated the oxidation rate of MgSO3 was influenced by the catalyst dosage, the reaction temperature, the solution pH, the airflow rate, and the SO32− concentration. Additionally, after recycling experiments, the regenerated catalyst retained its high catalytic performance for the MgSO3 oxidation. The reaction mechanism for the catalytic oxidation of MgSO3 by Co-Bent catalyst was also proposed. The generation of active free radicals (OH·, SO4−·, SO3−·, SO5−·) accelerated the MgSO3 oxidation. These results provide theoretical support for the treatment of MgSO3 and the development of durable catalyst.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 584-595"},"PeriodicalIF":5.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing anti-freezing hydrogel electrolyte based on deep eutectic solvent for wide temperature range aqueous zinc-ion battery

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-24 DOI: 10.1016/j.jes.2025.02.022

Yuqi Jiang , Yifan Liao , Jiayi Chen , Kun Ma

Hydrogels based on Deep Eutectic Solvents (DES) demonstrate remarkable anti-freezing, resilience, and toughness, presenting a promising avenue to the operation of aqueous zinc-ion batteries under extreme conditions. A gel electrolyte capable of operating over a wide temperature range is developed based on a DES comprising 1 mol/kg (m) Zn(ClO₄)₂ + 3.5 m Mg(ClO₄)₂. Spectral characterization confirms the synergistic influence of both anions and cations on the freezing point of the DES. With four hydrogen bond (HB) acceptors, Mg²⁺ exhibits strong electrostatic attraction towards the O atoms of H₂O, while ClO₄⁻ forms numerous HBs with H₂O molecules. This dual interaction allows for precise adjustment of the chemical environment around the H and O atoms of H₂O, resulting in an exceptionally low freezing point of -116.92 °C for the DES. The gel electrolyte derived from this DES demonstrates an impressive ionic conductivity of 0.285 mS/cm at -70 °C. Leveraging its excellent low-temperature performance and compatibility with a zinc anode, the flexible Zn-Mn battery constructed with this electrolyte exhibits robust electrochemical performance at low temperatures. Specifically, at -70 °C, it achieves a high specific capacity of 76.83 mAh/g, displays excellent rate capability, and maintains stable cycling performance. Moreover, the Zn-Mn battery operates reliably across a broad temperature range from -70 to 80 °C. This study presents innovative insights for advancing Zn-Mn batteries capable of efficient operation across diverse environmental conditions, thereby opening new avenues for their development.

{"title":"Advancing anti-freezing hydrogel electrolyte based on deep eutectic solvent for wide temperature range aqueous zinc-ion battery","authors":"Yuqi Jiang , Yifan Liao , Jiayi Chen , Kun Ma","doi":"10.1016/j.jes.2025.02.022","DOIUrl":"10.1016/j.jes.2025.02.022","url":null,"abstract":"<div><div>Hydrogels based on Deep Eutectic Solvents (DES) demonstrate remarkable anti-freezing, resilience, and toughness, presenting a promising avenue to the operation of aqueous zinc-ion batteries under extreme conditions. A gel electrolyte capable of operating over a wide temperature range is developed based on a DES comprising 1 mol/kg (m) Zn(ClO4)2 + 3.5 m Mg(ClO4)2. Spectral characterization confirms the synergistic influence of both anions and cations on the freezing point of the DES. With four hydrogen bond (HB) acceptors, Mg2+ exhibits strong electrostatic attraction towards the O atoms of H2O, while ClO4− forms numerous HBs with H2O molecules. This dual interaction allows for precise adjustment of the chemical environment around the H and O atoms of H2O, resulting in an exceptionally low freezing point of -116.92 °C for the DES. The gel electrolyte derived from this DES demonstrates an impressive ionic conductivity of 0.285 mS/cm at -70 °C. Leveraging its excellent low-temperature performance and compatibility with a zinc anode, the flexible Zn-Mn battery constructed with this electrolyte exhibits robust electrochemical performance at low temperatures. Specifically, at -70 °C, it achieves a high specific capacity of 76.83 mAh/g, displays excellent rate capability, and maintains stable cycling performance. Moreover, the Zn-Mn battery operates reliably across a broad temperature range from -70 to 80 °C. This study presents innovative insights for advancing Zn-Mn batteries capable of efficient operation across diverse environmental conditions, thereby opening new avenues for their development.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 596-605"},"PeriodicalIF":5.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Palygorskite-CaIn2S4 composite for rapid Cr(VI) reduction under visible light 开发用于在可见光下快速还原六价铬的鳞片石-CaIn2S4 复合材料

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-22 DOI: 10.1016/j.jes.2025.02.021

Yuanyuan Wang, Shijun Jia, Shiqiang Ding, Wenyan Zhang, Rui Shu, Yingfei Hu

Using natural minerals to eliminate harmful Cr(VI) under sustainable sunshine has significant potential. Herein, Palygorskite nanorods were utilized as carriers for the in-situ synthesis of CaIn₂S₄ photocatalysts through a simple one-pot thermal process, enabling the efficient reduction of Cr(VI). With a Palygorskite to CaIn₂S₄ mass ratio of 5 %, the conversion rate of Cr(VI) reached 98 % after 60 min of visible-light exposure, with a remarkable reaction rate of 0.0633 min⁻¹. The effective integration of CaIn₂S₄ with Palygorskite led to a more uniform dispersion of CaIn₂S₄, exposing more reactive sites. Moreover, the establishment of a heterojunction between CaIn₂S₄ and Palygorskite facilitated the transport of photogenerated electrons from CaIn₂S₄, enhancing the efficiency of charge separation. These factors contribute to the improved photocatalytic performance. Additionally, the developed composite photocatalysts demonstrated excellent stability under light exposure and could be reused efficiently. Trapping tests on active substances revealed that e⁻ played key roles in the Cr(VI) reduction. This research suggests the potential of using natural minerals to fabricate composite photocatalysts capable of effectively removing pollutants from the environment using solar energy.

{"title":"Development of Palygorskite-CaIn2S4 composite for rapid Cr(VI) reduction under visible light","authors":"Yuanyuan Wang, Shijun Jia, Shiqiang Ding, Wenyan Zhang, Rui Shu, Yingfei Hu","doi":"10.1016/j.jes.2025.02.021","DOIUrl":"10.1016/j.jes.2025.02.021","url":null,"abstract":"<div><div>Using natural minerals to eliminate harmful Cr(VI) under sustainable sunshine has significant potential. Herein, Palygorskite nanorods were utilized as carriers for the in-situ synthesis of CaIn2S4 photocatalysts through a simple one-pot thermal process, enabling the efficient reduction of Cr(VI). With a Palygorskite to CaIn2S4 mass ratio of 5 %, the conversion rate of Cr(VI) reached 98 % after 60 min of visible-light exposure, with a remarkable reaction rate of 0.0633 min−1. The effective integration of CaIn2S4 with Palygorskite led to a more uniform dispersion of CaIn2S4, exposing more reactive sites. Moreover, the establishment of a heterojunction between CaIn2S4 and Palygorskite facilitated the transport of photogenerated electrons from CaIn2S4, enhancing the efficiency of charge separation. These factors contribute to the improved photocatalytic performance. Additionally, the developed composite photocatalysts demonstrated excellent stability under light exposure and could be reused efficiently. Trapping tests on active substances revealed that e− played key roles in the Cr(VI) reduction. This research suggests the potential of using natural minerals to fabricate composite photocatalysts capable of effectively removing pollutants from the environment using solar energy.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 562-575"},"PeriodicalIF":5.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ engineering 2D/3D CuCo2S4@Co3O4 heterojunction for sensing and photocatalytic degradation of diclofenac sodium in environmental water

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-22 DOI: 10.1016/j.jes.2025.02.020

Chunmei Chen , Yunjie Yang , Qiong Wang , Hui Li , Chun Chang

Accurate determination and rapid degradation of organic pollutants are essential works in environmental improvement. Herein, the CuCo₂S₄@Co₃O₄ heterojunction with fascinating 2D-on-3D hierarchical nanoflowers architecture and highly distributed interface sites were successfully synthesized by CuCo-LDH topological transformation combine with in situ exterior sulfurization strategy. The 2D-on-3D nanoflowers architecture could improve light harvesting ability, provide large surface area, open channels and abundant edge sites. In particular, the intensive M-O-S-M heterojunction interface not only promote the photoexcited charge shuttling but provide abundant interface sites to enhance catalytic activity. As expected, the photocatalytic degradation rate of diclofenac sodium (DCF) on CuCo₂S₄@Co₃O₄ was approximately 100% within 30 min under 300 W mercury lamp, which was 1.28 times and 1.45 times higher than that of CuCo-LDH and CuCo₂O₄. The degradation rate for real samples were more than 80%, the mineralization rate was 90%, and the biological toxicity of degradation products decreased significantly. Furthermore, a novel photoelectrochemistry (PEC) sensor with CuCo₂S₄@Co₃O₄ as a photoanode was successfully constructed for directly sensing DCF, showing a wide linear range and satisfactory detection limit. The results indicate that the CuCo₂S₄@Co₃O₄ possess dual-functional peculiarity, hold vast potential for sensing and degradation environmental pollutants in wastewater.

{"title":"In situ engineering 2D/3D CuCo2S4@Co3O4 heterojunction for sensing and photocatalytic degradation of diclofenac sodium in environmental water","authors":"Chunmei Chen , Yunjie Yang , Qiong Wang , Hui Li , Chun Chang","doi":"10.1016/j.jes.2025.02.020","DOIUrl":"10.1016/j.jes.2025.02.020","url":null,"abstract":"<div><div>Accurate determination and rapid degradation of organic pollutants are essential works in environmental improvement. Herein, the CuCo2S4@Co3O4 heterojunction with fascinating 2D-on-3D hierarchical nanoflowers architecture and highly distributed interface sites were successfully synthesized by CuCo-LDH topological transformation combine with in situ exterior sulfurization strategy. The 2D-on-3D nanoflowers architecture could improve light harvesting ability, provide large surface area, open channels and abundant edge sites. In particular, the intensive M-O-S-M heterojunction interface not only promote the photoexcited charge shuttling but provide abundant interface sites to enhance catalytic activity. As expected, the photocatalytic degradation rate of diclofenac sodium (DCF) on CuCo2S4@Co3O4 was approximately 100% within 30 min under 300 W mercury lamp, which was 1.28 times and 1.45 times higher than that of CuCo-LDH and CuCo2O4. The degradation rate for real samples were more than 80%, the mineralization rate was 90%, and the biological toxicity of degradation products decreased significantly. Furthermore, a novel photoelectrochemistry (PEC) sensor with CuCo2S4@Co3O4 as a photoanode was successfully constructed for directly sensing DCF, showing a wide linear range and satisfactory detection limit. The results indicate that the CuCo2S4@Co3O4 possess dual-functional peculiarity, hold vast potential for sensing and degradation environmental pollutants in wastewater.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 606-618"},"PeriodicalIF":5.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ship emissions and reduction potential under domestic policies and international cooperation: A case study in Hainan, China

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-02-12 DOI: 10.1016/j.jes.2025.02.006

Weiwei Zhang , Wen Yi , Tingkun He , Xin Peng , Qiao Xing , Xiaochen Wu , Zhaohui Yang , Rongfu Xie , Aidan Xian , Huan Liu , Jiming Hao

Ship emissions contribute considerably to air pollution and are expected to decline under domestic policies and international cooperation such as green shipping corridors (GSCs). However, evaluation of the emission reduction potential by the Domestic Emission Control Area (DECA) policy and GSC cooperation is still lacking. Here, a series of multi-year high spatiotemporal ship emission inventories around Hainan, a representative island province of China, were developed with the state-of-the-art Shipping Emission Inventory Model. The improved origin-destination identification algorithm allowed emission allocation to port level. The emission reduction potential of the DECA policy and Hainan's joining GSC was analyzed. In 2022, ship emission intensity in waters 12 Nm from Hainan (Hainan-12Nm) were 6.4 %-7.4 % of that in waters 12 Nm from China. From 2019 to 2022, Hainan-12Nm emissions dropped by 66.7 %-77.8 % for SO₂ and PM_2.5. Ideally, with adequate ultra-low-sulfur fuel, DECA can reduce SO₂ and PM_2.5 emissions by 16.6 % and 22.4 % yearly compared with no-DECA scenario. However, emission reduction would drop markedly if ultra-low-sulfur fuel is short in supply. Emissions of voyages passing through 200 Nm from Hainan took up 1 %-4 % of international shipping emissions, implying great emission reduction potential for Hainan's establishing GSCs, especially considering the flourishing South-South trade. This study provides a thorough assessment of the current state of shipping emissions around Hainan as well as offers excellent data support for Hainan to further advance the future upgrade of ship emission management policies.

船舶排放在很大程度上造成了空气污染，在国内政策和国际合作（如绿色航运走廊）的推动下，船舶排放有望减少。然而，目前仍缺乏对国内排放控制区（DECA）政策和 GSC 合作的减排潜力的评估。在此，利用最先进的航运排放清单模型，在中国具有代表性的岛屿省份海南周围建立了一系列多年高时空船舶排放清单。改进后的始发地识别算法可将排放分配到港口层面。分析了 DECA 政策和海南加入 GSC 的减排潜力。2022 年，距海南 12Nm 水域（海南-12Nm）的船舶排放强度是距中国 12Nm 水域的 6.4%-7.4%。从 2019 年到 2022 年，海南-12Nm 的二氧化硫和 PM2.5 排放量下降了 66.7%-77.8%。在理想情况下，如果有足够的超低硫燃料，与无 DECA 情景相比，DECA 可使二氧化硫和 PM2.5 排放量每年分别减少 16.6% 和 22.4%。然而，如果超低硫燃料供应不足，减排量将显著下降。通过海南 200 海里的航程的排放量占国际航运排放量的 1%-4%，这意味着海南建立全球供应链的减排潜力巨大，特别是考虑到蓬勃发展的南南贸易。本研究对海南周边航运排放现状进行了全面评估，为海南未来进一步推进船舶排放管理政策升级提供了良好的数据支持。

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引用次数: 0

HCHO and NO2 profile characteristics under different synoptic patterns in Shanghai, China

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-01-31 DOI: 10.1016/j.jes.2025.01.028

Yuhan Shi , Shanshan Wang , Sanbao Zhang , Jiaqi Liu , Dan Jin , Juntao Huo , Ruibin Xue , Jian Zhu , Chuanqi Gu , Bin Zhou

Large-scale synoptic patterns significantly affect meteorological conditions and air pollution, yet their impacts on the vertical distribution of formaldehyde (HCHO) and nitrogen dioxide (NO₂) have been little studied. From 1 June 2020 to 31 December 2021, Multi-AXis-Differential Optical Absorption Spectroscopy (MAX-DOAS) was used to observe NO₂ and HCHO vertical profiles in three typical environments of Shanghai, China, representing urban, suburban and coastal rural environments, respectively. HCHO level is the highest at suburban site, NO₂ is the highest at urban site. HCHO is mainly distributed between 0 and 1 km in altitude, and NO₂ is concentrated near the ground. The ratio of HCHO to NO₂ is used to identify ozone formation regimes, ozone sensitivities vary with environmental area, season and altitude. The principal component analysis in the T-mode approach and typhoon “In-Fa” case is applied to analyze the effects of synoptic patterns on HCHO and NO₂ vertically. HCHO concentrations show a pattern of low-pressure type > uniform-pressure type > high-pressure type at each altitude layer, while NO₂ concentrations follow the opposite pattern. Meteorological factors (especially radiation, temperature, relative humidity, cloud cover and wind), external transport and initial emissions contribute to the differences in HCHO and NO₂ levels across synoptic types. The “In-Fa” case shows how this special synoptic pattern elevates HCHO and NO₂ levels by improving meteorological conditions, boosting biogenic precursors and shifting air mass directions. This study assesses the impacts of synoptic patterns on HCHO and NO₂ vertical distribution in Shanghai, offering insights into understanding causes of pollution.

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引用次数: 0

UV-light-promoted synthesis of a double Z-scheme BN/C60/g-C3N4 heterojunction with enhanced photodegradation performance for antibiotics

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-01-25 DOI: 10.1016/j.jes.2025.01.020

Yong Guo , Haoran Xu , Shugui Hua , Zixuan Xu

Developing environmental-friendly non-metal photocatalysts for the efficient removal of antibiotics from environment is a significant challenge. The construction of heterojunction is regarded as a powerful strategy to enhance the photodegradation efficiency of photocatalysts for pollutants, being due that this strategy can effectively suppress the recombination of the photo-induced electron and hole. In this research, a novel double Z-scheme BN/C₆₀/g-C₃N₄ heterojunction was successfully synthesized via one-step synthetic approach. Based on a series of experimental characterization, BN/C₆₀/g-C₃N₄ is most likely formed via the interaction between N element of BN and g-C₃N₄ with C₆₀ under UV-light irradiation. The band structures of BN, C₆₀, g-C₃N₄ and the internal electric field among them suggest that BN/C₆₀/g-C₃N₄ may has a direct double z-type band arrangement, which facilitates efficient charge transfer. The photodegradation rate of BN/C₆₀/g-C₃N₄ for tetracycline reached 90.1 %, which is 2.9 times higher than that observed with BN and 2.3 times higher than that of g-C₃N₄. BN/C₆₀/g-C₃N₄ exhibits remarkable photocatalytic performance across a wide pH range and in the influence of different anions. This study offers significant insights about how to design double z-scheme metal-free photocatalyst with high photodegradation efficiency for antibiotic.

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引用次数: 0