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Tuning CoPi stability in electrochemical water oxidation via surface modification with an organic ligand shell

International Journal of Hydrogen Energy 2024年 76卷 141-151页

作者： Khattak, Zafar A.K. Younus, Hussein A. Ahmad, Nazir Alomar, Muneerah Ullah, Habib Al-Abri, Mohammed Al-Hajri, Rashid Kao, Chih-Ming Verpoort, Francis State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Nanotechnology Research Center Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman 6 Miklukho-Maklaya Str. Moscow117198 Russia Department of Chemistry Government College University Lahore Lahore54000 Pakistan Department of Chemistry University of Buner Swari Khyber Pakhtunkhwa Buner Pakistan Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Materials Science and Engineering Chungnam National University Daejeon34134 Korea Republic of Chemistry Department Faculty of Science Fayoum University Fayoum63514 Egypt Department of Chemical and Petroleum Engineering College of Engineering Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan

In electrocatalytic applications, catalyst interface crucially influences electrochemical activity and selectivity, balancing adsorption, desorption, and transport of intermediates and electrons. Capitalizing on this fact, this study unveils a novel approach to enhance CoOx surfaces, a promising electrocatalyst for water oxidation, through organic shell functionalization via electrodeposition. Utilizing a dinuclear cobalt complex 1, resembling CoOx's structure, we crafted a modified film exhibiting remarkable stability. This film consistently delivered a current density of 2.0 mA/cm2 for oxygen evolution at 1.5 V vs. NHE, sustaining over 25 h under neutral conditions with only a minimal 5% activity reduction. Conversely, the standard CoPi catalyst underwent rapid deterioration, losing about 40% of its initial catalytic current in just 14 h. Further investigations revealed that the organic shell effectively reduces catalyst dissolution, in contrast to the severe dissolution of CoPi, directly impacting its catalytic activity. This approach offers a straightforward means to functionalize various nanostructured materials, potentially enhancing their electrochemical activities and stabilities. © 2024 Hydrogen Energy Publications LLC

关键词： Dissolution

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Recycling Waste Fresh Paste Through a Dormancy—Awakening Method Using CO2 as the Awakener

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SSRN 2024年

作者： Chen, Peiyuan Zong, Zijian Qian, Xinliang Li, Jin Wang, Liping Wang, Jialai Fang, Yi School of Civil Engineering and Architecture Anhui University of Science and Technology Huainan232001 China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan232001 China Department of Engineering Science Faculty of Innovation Engineering Macau University of Science and Technology 999078 China College of Mechanics and Materials Hohai University Jiangsu Nanjing211100 China School of Civil Engineering and Architecture Chongqing University of Science and Technology Chongqing401331 China Department of Civil Construction and Environmental Engineering The University of Alabama TuscaloosaAL35487 United States

This paper proposed a dormancy—awakening method for the collection and recycling of waste fresh paste (WFP), generated from waste fresh concrete from concrete mixing plant. Sodium citrate was employed to put WFP into the state of dormancy with low rates of cement hydration;whereas gaseous CO2 was injected, serving as an awakener for the dormant WFP. Experimental results demonstrated that sodium citrate treatment effectively impeded the cement hydration of WFP, allowing a sufficient operational time for further accumulation and centralized processing. CO2 injection facilitated the in-situ generation of fine-sized CaCO3 within dormant concrete, providing nucleation sites for accelerated hydration of cement. Consequently, dormant WFP can be awakened through the in-situ generation of fine-sized CaCO3. Application of CO2 injection for 45 mins or 60 mins resulted in the restoration of 28d compressive strength of WFP to values comparable to those of the blank mixture. This approach holds promise for eco-friendly concrete production and effective utilization of WFP, contributing to sustainable construction practices. © 2024, The Authors. All rights reserved.

关键词： Cements

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Study on the Co-Culture Mechanism of Urea-Hydrolysis Bacteria and Biosurfactant Bacteria for Dust Suppression

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SSRN 2023年

作者： Cheng, Wei-Min Liu, Jin-Di Feng, Yue Hu, Xiang-Ming Zhao, Yan-Yun Liu, Yu College of Safety and Environmental Engineering Shandong University of Science and Technology Shandong Qingdao266590 China State Key Laboratory of Mine Lab Disaster Prevention and Control Co-found by Shandong Province Ministry of Science and Technology Shandong University of Science and Technology Shandong Qingdao266590 China

To solve the problems of poor wettability and difficult penetration of microbial dust suppressants caused by the strong hydrophobicity of coal dust, a biosurfactant bacteria (previously screened in coal dust, strain P) and a urea-hydrolysis bacteria (also screened in coal dust, strain X) were co-cultured. In addition, the growth characteristics, mineralization, and emulsification performance of the compound bacteria under different inoculation sequences (P14X, X14P, PX, P24X, and X24P) were studied. Results showed that strain P may inhibit the diffusion of the strain X, but ultimately can synergistically grow and increase the urease activity of co-culture system. It also can be found that the compound bacteria P14X exhibits quite high mineralization and emulsification characteristics. Non-targeted gene metabolomics analysis found that strain X in co-culture systems can provide fatty acids for the production of biosurfactants and promote the synthesis of rhamnolipids. At the same time, strain P can provide an alkaline environment for the occurrence of mineralization in co-culture systems and promote the generation of CaCO3. The preparation of microbial dust suppressants based on compound bacteria can provide theoretical basis and data support for the application of microbial dust suppressants in the field of coal dust prevention and control. © 2023, The Authors. All rights reserved.

关键词： Bacteria

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Fabrication of Structurally Improved Knatio3 Pellets Derived from Cheap Rutile Sand for High-Temperature Co2 Capture

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SSRN 2023年

作者： Fan, Wenqi Zhang, Tianyu Huang, Liang Li, Hailong Wang, Lidong Wang, Qiang Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Engineering Research Center for Water Pollution Source Control & Eco-remediation College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China School of Energy Science and Engineering Central South University Changsha410083 China MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

For the practical applications of CO2 sorbents, more studies on pellet- rather than powder-type sorbents is highly demanded. In addition, high sorption kinetics, excellent cycling stability, and cheap raw precursors are far more important than its initial CO2 uptake value to certain extent. KNaTiO3 is a promising high-temperature CO2 sorbent due to its high CO2 sorption capacity and excellent cyclic stability. In order to promote its practical application in industry, low-price titanium ore was selected for the synthesis of KNaTiO3, and the optimized KR3 sorbent maintained a rapid and reversible sorption capacity of 15.5 wt% after 100 cycles. Spherical pellets were fabricated by extrusion-spheronization method with cellulose and alumisol additives. The optimal pellets exhibited a relative compression strength of 4.15 MPa and an attrition rate of 1.2 wt%, maintained a sorption capacity of 14.3 wt% after 50 cycles. It also showed superior CO2 capture kinetics, reaching a high CO2 removal rate of 92.5% within only 4 min (under 20% CO2). The role and mechanism of cellulose as pore-former were explored by SEM analysis and diffusion model fitting. In all, the high CO2 uptake, superior sorption kinetics, excellent cyclic stability, physico-chemical properties and the low cost ensure this newly developed KR3 pellets a highly promising high-temperature CO2 sorbents for practical applications in industries. © 2023, The Authors. All rights reserved.

关键词： Titanium dioxide

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Structural regulation of Ti_(3)C_(2)2D-nanosheets for enhancing photothermal and electrochemical catalytic properties

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Nano Research 2025年第5期18卷 659-671页

作者： Yaoyang Pu Shaojun Liu Yujun Yang Zhixian Mao Yufeng Zhou Huajie Yin Liangcan He Xiang Mao College of Biomedical Engineering Chongqing Medical UniversityChongqing 400016China State Key Laboratory of Ultrasound in Medicine and Engineering Chongqing Medical UniversityChongqing 400016China Key Laboratory of Laboratory Medical Diagnostics Ministry of EducationDepartment of Laboratory MedicineChongqing Medical Laboratory Microfluidics and SPRi Engineering Research CenterChongqing Medical UniversityChongqing 400016China Key Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China School of Medicine and Health Key Laboratory of Micro-Systems and Micro-structures Manufacturing(Ministry of Education)Harbin Institute of TechnologyHarbin 150001China Zhengzhou Research Institute Harbin Institute of TechnologyZhengzhou 450046China

Two-dimensional(2D)MXene materials are promising candidates for the development of heterogeneous materials,yet deciphering structural impacts on their inherent physical properties poses significant *** introduce structurally regulated 2D Ti_(3)C_(2)nanosheets that were fabricated using high intensity focused ultrasound(HIFU)*** nanosheets were easily produced in large quantities with a high yield of 94.4%and exhibited excellent photothermal and electrochemical catalytic *** utilizing this monolayer H-Ti_(3)C_(2)(HIFU-treated Ti_(3)C_(2)),the heterogeneous integration exhibited promising performance in subsequent *** integrating with a hydrogel matrix(H-Ti_(3)C_(2),0.1 wt.%),it demonstrated a photothermal conversion efficiency reaching 43.08%,and the maximum temperature increased by 48.14%under near-infrared(NIR)***,these 2D nanosheets were also utilized in fabricating electrochemical sensors to evaluate electrochemical-catalytic ***,it confirmed that the electrocatalytic activity of heterogeneous Au/H-Ti_(3)C_(2)in electrochemical dopamine(DA)detection,and it proved the exhibition of sensitivity(0.012μA/μM),low detection limit(0.15μM),and excellent anti-interference performance and *** enhanced activity was ascribed to synergistic effect of Au and the increased number of accessible active sites on the *** work not only sheds light on the structure-property relationship of 2D Ti_(3)C_(2)but also broadens the application scope of typical dimensional materials for controlling and producing in biological and sensing applications.

关键词： Ti_(3)C_(2)nanosheet heterogeneous-gel photothermal antibacterial catalyst electrochemical sensing

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Characteristics of Spatial and Temporal Vegetation Index Variability and Its Responses to Temperature and Precipitation in Mongolia

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Journal of Resources and Ecology 2024年第5期15卷 1175-1184页

作者： YANG Meihuan LI Yawen WANG Tao WANG Juanle LI Pengfei LI Ting HUANG Jing Ochir ALTANSUKH Davaadorj DAVAASUREN School of Geomatics and Geoinformation Xi’an University of Science and TechnologyXi’an 710054China Institute of Land and Space Xi’an University of Science and TechnologyXi’an 710054China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChineseAcademy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China Department of Environment and Forest Engineering School of Engineering and Technology and Environmental Engineering LaboratoryNationalUniversity of MongoliaUlaanbaatar 14201Mongolia Department of Geography School of Art and SciencesNational University of MongoliaUlaanbaatar 14201Mongolia

The Mongolian Plateau,a vital ecological barrier in northern China,is of great importance for studying vegetation dynamics in Mongolia against the background of climate *** studies can enhance our understanding of regional vegetation responses to global warming and contribute to the establishment of a stronger ecological barrier in northern ***,we analyzed the spatial and temporal characteristics of the NDVI(normalized difference vegetation index)in Mongolia using 8 km resolution GIMMS NDVI3g data from 1990 to 2022,along with temperature,precipitation,and elevation *** analysis and correlation methods were used to examine the relationships between the NDVI and temperature,as well as *** results showed four important aspects of these relationships.(1)The NDVI in Mongolia increased significantly from 1990 to 2022 at a rate of 0.0015 yr^(-1)(P<0.05).(2)Mongolia’s NDVI increased from 1990 to 2022 in 60.73%of the *** this total,the area with a significant increase accounted for 31.67%and was concentrated on the eastern and western *** area experiencing a significant decrease accounted for 15.67%and was mainly located on the southwestern edges.(3)The NDVI analysis revealed significant increasing trends in all regions except for those at elevations of 1500-2000 *** greatest rate of increase was observed between 500 and 1000 m,and the increasing trend weakened as elevation continued to increase before gradually becoming significant ***,the NDVI increased significantly across different slopes,and the rate of increase decreased as the slope increased.(4)From 1990 to 2022,Mongolia’s NDVI was mostly negatively correlated with *** occurred over 66.75%of the total land area,with 17.21%of the region exhibiting a significant negative correlation,mainly in the ***,the NDVI demonstrated a positive correlation with precipitation,encompassing 86.71%of the total land *** 4

关键词： normalized difference vegetation index slope elevation trend analysis correlation analysis Mongolia

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The economic burden of a carbon tax on Chinese residents: A gender and income perspective

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Energy Economics 2025年 147卷

作者： Yu, Yan-Yan Zhong, Chao-Yun Zhang, Shu-Xin Jiang, Hong-Dian Center for Energy and Environmental Policy Research Beijing Institute of Technology Beijing100081 China School of Management Beijing Institute of Technology Beijing100081 China NSFC Basic Science Center for Energy and Climate Change Beijing100081 China Beijing Laboratory for System Engineering of Carbon Neutrality Beijing100081 China

Consumption-based carbon accounting helps identify key groups that influence emission reduction efforts, but current research primarily focuses on consumption differences among different income groups, neglecting the impact of gender characteristics on emissions and the potential differentiated effects of emission reduction policies on different gender groups. Therefore, on the basis of a detailed description of the consumption structure of residents grouped by income and gender, this study takes China as an example to examine the indirect carbon emissions from residents' product consumption. This study uses an input–output structural decomposition analysis model to investigate the contributions of five influencing factors to changes in consumption-based carbon emissions in China and uses an input–output price model to explore the economic burden of a carbon tax on residents grouped by gender and income. The results show that low-income females have the largest carbon tax burden ratio (i.e., the proportion of the carbon tax cost in the residents' total consumption expenditure), which is 1.12 times and 1.32 times higher than that of low-income residents and the average level, respectively. Specifically, 64.9 % (185.2 yuan) of females' carbon tax cost is related to housing consumption. Targeted implementation of supporting policies can obviously decrease the carbon tax cost of low-income residents and female residents, which can provide support for enhancing the fairness and inclusivity of emission reduction policies. © 2024

关键词： Carbon tax Economic burden Gender Income Input–output price model

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Corrosion protection of Aluminium Alloy 2024 through an epoxy coating embedded with smart microcapsules: The responses of smart microcapsules to corrosive entities

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Corrosion Communications 2021年第1期1卷 1-9页

作者： Miaomiao Cui Demian I.Njoku Bowen Li Lihui Yang Zuankai Wang Baorong Hou Ying Li Corrosion and Protection Division Institute of Metal Research Chinese Academy of Sciences Department of Mechanical Engineering City University of Hong Kong Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of Oceanology Chinese Academy of Sciences Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology (Qingdao) Shenyang National Laboratory for Materials Science Northeastern University

This article employed a layer-by-layer approach to modify the interfacial boundary of halloysite clay nanotubes（HNTs） using (poly （diallyldimethylammonium chloride）)（PDDA） and poly （styrene sulfonate）(PSS) polyelectrolytes to form core （inhibitor-loaded HNTs）-shell (polyelectrolytes layers （PDDA/PSS）) structured smart microcapsules or *** of the smart microcapsules to changes in pH （H+）,Cl-,OH-and H2O during the release of the loaded inhibitor (2-mecaptobenzothiazole inhibitor （2-MBT）) coupled with the number of PDDA/PSS polyelectrolytes layers （n） required to obtain optimal response were *** anticorrosion efficacies of several organic compounds were screened to identify the most suitable inhibitor for the protection of Al alloy 2024 in 3.5 wt.%NaCl.2-MBT which exhibits the best inhibition efficiency was successfully loaded into the HNTs lumen as demonstrated by TGA and DSC *** release profiles of 2-MBT reveal that the sensitivity of the smart microcapsules to the various external stimuli decreased in the following order:pH>Cl->H2O>OH-;and three-layered polyelectrolyte （3n） displays the highest sensitivity amongst the studied layer numbers （n）.The release profiles were fitted to the Pappas and Weibull’s models which describe the release *** of the smart microcapsules with epoxy coating coupled with the anticorrosion effect on Al alloy 2024 substrate were evaluated by means of long-term salt spray and immersion tests.

关键词： Microcapsule Smart anticorrosive coating Sustained release Inhibitor

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Construction of Microchannel Charcoal Cathodes with Spatial- Constraint Capability for Enhancing Reduction of NO3¯ In High-Salinity Water

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SSRN 2022年

作者： Wu, Yueyao Gu, Yuwei Kang, Wenda Yu, Hongtao Chen, Shuo Quan, Xie Lu, Na Key Laboratory of Industrial Ecology and Environmental Engineering Ministry of Education School of Environmental Science and Technology Dalian University of Technology Dalian116024 China School of Electrical Engineering Dalian University of Technology Dalian116024 China

Electrochemistry is a potential technology to remove nitrate from high-salinity water. Due to electrostatic repulsion of cathodes to NO3¯ anions, NO3¯ will be pushed to anodes thus limiting the reduction reaction at cathodes. To restrain the electrostatic repulsion, an alkali-etched microchannel charcoal (AEMC) was fabricated as a cathode. Its channel radius was less than 10 μm but the channel length was more than 4 cm. The function of alkali etching was to create the oxygen-containing groups as active site. During reaction, NO3¯ anions can flow through cathodic microchannel with high aspect ratio and be reduced by electrons at active sites throughout microchannel surface. The spatial constraint is confirmed to have the function of counteracting electrostatic repulsion. Compared to electrodes without spatial constraint, AEMC displayed 1.6 times of nitrate reduction ratio (from 43.9% to 70.8%) and 5.2 times of Faraday efficiency (from 11.6% to 60.4%). This AEMC cathode also displayed a good nitrogen selectivity (100%) and low energy consumption (0.18 kWh/g (NO3¯-N)). The highest NO3¯-N removal capability reached 31.3 mg L-1h-1cm-2, which was higher than those of most reported metal electrodes. These results demonstrated a novel approach to improve nitrate reduction reaction employing a spatial-constraint cathode. © 2022, The Authors. All rights reserved.

关键词： Nitrates

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A review of biosensor for environmental monitoring: principle, application, and corresponding achievement of sustainable development goals

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Bioengineered 2023年第1期14卷 58-80页

作者： Chi-Wei Huang Chitsan Lin Minh Ky Nguyen Adnan Hussain Xuan-Thanh Bui Huu Hao Ngo Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan. Ph.D. Program in Maritime Science and Technology College of Maritime National Kaohsiung University of Science and TechnologyPh.D. Program in Maritime Science and Technology Kaohsiung Taiwan. Ph. D. Program of Aquatic Science and Technology College of Hydrosphere Science National Kaohsiung University of Science and Technology Kaohsiung Taiwan. Department Water Science & Technology Key Laboratory of Advanced Waste Treatment Technology Ho Chi Minh City University of Technology (HCMUT) Vietnam National University Ho Chi Minh (VNU-HCM) Ho Chi Minh City Vietnam. Department Water Science & Technology Faculty of Environment & Natural Resources Ho Chi Minh City University of Technology (HCMUT) Ho Chi Minh City Vietnam. Department Water Science & Technology Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering Faculty of Engineering and Information Technology University of Technology Sydney Sydney NSW Australia.

Human health/socioeconomic development is closely correlated to environmental pollution, highlighting the need to monitor contaminants in the real environment with reliable devices such as biosensors. Recently, variety of biosensors gained high attention and employed as application, in real-time, and cost-effective analytical tools for healthy environment. For continuous environmental monitoring, it is necessary for portable, cost-effective, quick, and flexible biosensing devices. These benefits of the biosensor strategy are related to the Sustainable Development Goals (SDGs) established by the United Nations (UN), especially with reference to clean water and sources of energy. However, the relationship between SDGs and biosensor application for environmental monitoring is not well understood. In addition, some limitations and challenges might hinder the biosensor application on environmental monitoring. Herein, we reviewed the different types of biosensors, principle and applications, and their correlation with SDG 6, 12, 13, 14, and 15 as a reference for related authorities and administrators to consider. In this review, biosensors for different pollutants such as heavy metals and organics were documented. The present study highlights the application of biosensor for achieving SDGs. Current advantages and future research aspects are summarized in this paper. ATP: Adenosine triphosphate; BOD: Biological oxygen demand; COD: Chemical oxygen demand; Cu-TCPP: Cu-porphyrin; DNA: Deoxyribonucleic acid; EDCs: Endocrine disrupting chemicals; EPA: U.S. environmental Protection Agency; Fc-HPNs: Ferrocene (Fc)-based hollow polymeric nanospheres; FeO@3D-GO: FeO@three-dimensional graphene oxide; GC: Gas chromatography; GCE: Glassy carbon electrode; GFP: Green fluorescent protein; GHGs: Greenhouse gases; HPLC: High performance liquid chromatography; ICP-MS: Inductively coupled plasma mass spectrometry; ITO: Indium tin oxide; LAS: Linear alkylbenzene sulfonate; : Laser-induced g

关键词： Biosensor bioavailability heavy metals organic pollutants sustainable development goals (SDGs)

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