检索结果-内蒙古大学图书馆

engineering Unsaturated Sulfur Site in Three-Dimension Mos2@Rgo Nanohybrids with Expanded Interlayer Spacing and Disordered Structure for Gaseous Elemental Mercury Trap

SSRN

引用

SSRN 2022年

作者： Li, Jiayuan Liang, Zhikang Chen, Zhikang Zhang, Zhiheng Liu, Hui Liu, Zhilou Xu, Zhifeng School of Chemistry and Environmental Science Xiangnan University Chenzhou423000 China School of Metallurgical Engineering JiangXi University of Science and Technology Ganzhou341000 China Ganzhou Engineering Technology Research Center of Green Metallurgy and Process Intensification Ganzhou341000 China School of Metallurgy and Environment Central South University Changsha410083 China Key Laboratory of Ionic Rare Earth Resources and Environment Ministry of Natural Resources Jiangxi Ganzhou341000 China

Rapid and effective capture of gaseous elemental mercury (Hg 0 ) over a wide operating temperature range is significant for the green and sustainable development of nonferrous smelting industry. The high mercury affinity and strong sulfur resistance of two-dimensional layered MoS 2 render it an outstanding adsorbent for Hg 0 trap. However, the relative lack of serviceable active sites greatly suppresses its extensive application. Herein, a feasible strategy to expand interlayer spacing, build disordered structure and engineer unsaturated sulfur adsorption sites was provided through the construction of three-dimension MoS 2 @rGO nanohybrids. As expected, compared with bulk and ordered MoS 2 , the prepared MoS 2 @rGO hybrids exhibit a remarkable performance improvement for Hg 0 adsorption. The average Hg 0 adsorption rate of MoS 2 @rGO is 2.28 μg/g/min and its saturated adsorption capacity reaches 20.91 mg/g. The typical components in nonferrous flue gas have almost no effect on Hg 0 adsorption performance. X-ray photoelectron spectroscopy confirms that the formation of abundant unsaturated coordination sulfurs sites with high thermostability is critical for Hg 0 adsorption performance improvement. Moreover, the density functional theory calculation results further demonstrate the high adsorption activity of unsaturated coordination sulfur sites for Hg 0 capture. Among these sulfur sites, edge sulfur vacancy site plays a dominant role for Hg 0 adsorption because of the lowest Hg 0 adsorption energy. The final adsorption production is HgS which has negligible environmental toxicity due to its extreme stability. This work not only provides a promising adsorbent for Hg 0 removal in industrial application, but also open up an avenue to engineer unsaturated sulfur for other layered transition metal dichalcogenides. © 2022, The Authors. All rights reserved.

关键词： Molybdenum compounds

来源：评论

学校读者我要写书评

暂无评论

Digital earth:yesterday,today,and tomorrow

引用

International Journal of Digital Earth 2023年第1期16卷 1022-1072页

作者： Alessandro Annoni Stefano Nativi ArzuÇöltekin Cheryl Desha Eugene Eremchenko Caroline M.Gevaert Gregory Giuliani Min Chen Luis Perez-Mora Joseph Strobl Stephanie Tumampos International Society for Digital Earth BeijingPeople’s Republic of China National Research Council RomeItaly University of Applied Sciences and Arts Northwestern Switzerland FHNW School of EngineeringInstitute of Interactive Technologies IITBrugg-WindischSwitzerland Nathan Campus Griffith UniversityCities Research InstituteBrisbaneAustralia Lomonosov Moscow State University MoscowRussia Department of Earth Observation Science University of TwenteTwenteThe Netherland Institute for Environmental Sciences/enviroSPACE University of GenevaGenevaSwitzerland Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC) Nanjing Normal UniversityNanjingPeople’s Republic of China Cities Research Institute Nathan CampusGriffith UniversityBrisbaneAustralia Department of Geoinformatics University of SalzburgSalzburgAustria Chair of Remote Sensing Technology Technical University of MunichMunichGermany Big Geospatial Data Management Technical University of MunichMunichGermany

The concept of Digital Earth(DE)was formalized by Al Gore in *** that time the technologies needed for its implementation were in an embryonic stage and the concept was quite *** then digital technologies have progressed significantly and their speed and pervasiveness have generated and are still causing the digital transformation of our *** creates new opportunities and challenges for the realization of DE.‘What is DE today?’,‘What could DE be in the future?’,and‘What is needed to make DE a reality?’.To answer these questions it is necessary to examine DE considering all the technological,scientific,social,and economic aspects,but also bearing in mind the principles that inspired its *** understanding the lessons learned from the past,it becomes possible to identify the remaining scientific and technological challenges,and the actions needed to achieve the ultimate goal of a‘Digital Earth for all’.This article reviews the evolution of the DE vision and its multiple definitions,illustrates what has been achieved so far,explains the impact of digital transformation,illustrates the new vision,and concludes with possible future scenarios and recommended actions to facilitate full DE implementation.

关键词： Digital Earth digital transformation sustainable development data governance and ethic citizen empowerment and industry engagement

来源：评论

学校读者我要写书评

暂无评论

Mn-Ce-Nb-O_x/P84 catalytic filters prepared by a novel method for simultaneous removal of particulates and NO

引用

Journal of Rare Earths 2019年第3期37卷 273-281页

作者： Bo Yang Qiong Huang Mindong Chen Yuesong Shen Shemin Zhu Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) College of Materials Science and Engineering Nanjing Tech University

The Mn-Ce-Nb-O_x/P84 catalytic filter for removal of particulates and NO simultaneous was prepared by a novel method(foam coating method). The process parameters including the concentrations of PTFE emulsion, particle size of catalyst and calcination temperature for preparation of catalytic filters were analyzed. In addition, the physical properties and performance for removal of NO(NH_3-SCR) and particulates of Mn-Ce-Nb-O_x/P84 catalytic filter prepared under the optimized parameters, were also systematic studied. Results show that the process parameters had significant influences on stability and performance of catalytic filter, The Mn-Ce-Nb-O_x/P84 catalytic filter prepared by foam coating method under the optimized parameters, has satisfactory physical properties and catalytic performance for removal of NO and particulates at 140-220 ℃. The NO removal efficiency of catalytic filter can reach95.3% at 200 ℃ as the catalyst loading amount is 450 g/m^2, Moreover,the dust removal efficiency of MnGe-Nb-O_x/P84 catalytic filter reaches as high as 99.98%, and the PM2.5 removal efficiency also reaches99.98%. The anti-sulfur performance of Mn-Ce-Nb-O_x catalytic filter is also attractive, after injecting150 ppm SO_2, the NO removal efficiency still retains up to 85%. It is indicated that the foam coating method can not only make a bond of high strength between catalyst and filter, but also make the catalytic filter possessing an excellent and stable performance for removal of NO and particulates.

关键词： Foam coating method Simultaneous removal Mn-Ce-Nb-O_x/P84 catalytic filters NO Particulates Preparation method

来源：评论

学校读者我要写书评

暂无评论

Dual-Defect Agbio 3 /Dcn S-Scheme Heterojunction For Booted Photocatalytic Removal of Norfloxacin: Interfacial Charge Transfer, Mechanism And Toxicity Assessment Insights

SSRN

引用

SSRN 2024年

作者： Liu, Haiping Liu, Zhiwei Guo, Li Zhao, Xinna Liang, Jing Zhang, Xinyue Gao, Qiancheng Tian, Xuefei Jia, Xiaofeng Sun, Yu Zhou, Jianguo Liu, Haitao School of Civil Engineering and Environmental Zhengzhou University of Aeronautics Zhengzhou450002 China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Materials Science and Engineering Zhengzhou University of Aeronautics Zhengzhou450002 China Ecological Environment Monitoring and Safety Center of Henan Province Zhengzhou450018 China Thermo Fisher Beijing100020 China School of chemistry and chemical engineering Henan Normal University Henan Xinxiang453007 China College of Resources and Environmental Sciences Henan Agricultural University Zhengzhou450002 China

Antibiotics pollution may pose a great risk to ecosystem and human health. In this work, an innovative dual-defect AgBiO3/DCN S-scheme heterojunction was constructed to overcome the sluggish charge separation and transfer issue and showed exceptional photodegradation performance towards norfloxacin (NFL) pollution under the visible light. The degradation efficiency of NFL reached 95.30% within 120 min respectively, the rate constant was 3.64 times higher than that of defective g-C3N4 (DCN). The systematically characterizations proved that the enhanced photocatalytic activity was benefited from optimized band structures, improved carrier separation efficiency, due to dual defects and S-scheme heterojunction in AgBiO3/DCN. the intermediate degradation products and degradation pathway of NFL were speculated by UPLC-HRMS, and the environmental toxicity degree of degradation products was analyzed according to the T.E.S.T software. The charge transfer pathway was confirmed as an S-scheme mechanism through a combination of band structure analysis, alongside electron paramagnetic resonance (EPR) *** quenching experiments and ESR analyses indicated that h+ and O2•− radicals played predominant roles. The efficient and stable photocatalytic NFL degradation efficiency and broad environmental adaptability proved potential practical application. This work may shed light on designing new dual-defect heterojunction with photocatalytic antibiotic removal capability in the innovative water treatment process. © 2024, The Authors. All rights reserved.

关键词： Defects

来源：评论

学校读者我要写书评

暂无评论

Modulating Coordination environment of Fe Single Atoms for High-Efficiency All-Ph-Tolerated H2o2 Electrochemical Production

SSRN

引用

SSRN 2022年

作者： Wu, Yuhan Ding, Yifan Han, Xiao Li, Beibei Wang, Yifei Dong, Shuying Li, Qilu Dou, Shixue Sun, Jingyu Sun, Jianhui School of Environment Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control-Ministry of Education Henan Normal University Henan Xinxiang453007 China College of Energy Soochow Institute for Energy and Materials Innovations Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies Soochow University Suzhou215006 China National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering Beijing University of Technology Beijing100124 China Institute for Superconducting and Electronic Materials University of Wollongong WollongongNSW2522 Australia

Designing atomically dispersed non-precious metal catalysts for 2e− oxygen reduction reaction (ORR) is an appealing strategy to harness O2-to-H2O2 chemistry. Nevertheless, prevailing M–N–C single-atom catalysts (SACs) still cannot satisfy the directional regulation of ORR selectivity, hence fail to uphold scalable H2O2 electrosynthesis with a high yield. Herein, we report the precise synthesis of (O,N)-coordinated Fe SAC (FeN2O2) and relating investigation of its performance in H2O2 production over a wide pH range, in comparison with the FeN4 counterpart. Density functional theory simulations reveal that the coordination chemistry engineering has a profound influence on the strength of the intermediate adsorption. The thus-derived FeN2O2 exhibits impressive selectivity in a wide pH range. Furthermore, our constructed gas-diffusion electrode enables a favorable H2O2 yield (350 mmol L–1) for 50 h. This work might inspire the rational design of definitive SAC architecture for practically feasible electrochemical production of H2O2 toward environmental remediation. © 2022, The Authors. All rights reserved.

关键词： Density functional theory

来源：评论

学校读者我要写书评

暂无评论

Modes of genetic adaptations underlying functional innovations in the rumen

引用

science China(Life sciences) 2021年第1期64卷 1-21页

作者： Xiangyu Pan Yudong Cai Zongjun Li Xianqing Chen Rasmus Heller Nini Wang Yu Wang Chen Zhao Yong Wang Han Xu Songhai Li Ming Li Cunyuan Li Shengwei Hu Hui Li Kun Wang Lei Chen Bin Wei Zhuqing Zheng Weiwei Fu Yue Yang Tingting Zhang Zhuoting Hou Yueyang Yan Xiaoyang Lv Wei Sun Xinyu Li Shisheng Huang Lixiang Liu Shengyong Mao Wenqing Liu Jinlian Hua Zhipeng Li Guojie Zhang Yulin Chen Xihong Wang Qiang Qiu Brian PDalrymple Wen Wang Yu Jiang Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling712100China School of Ecology and Environment Northwestern Polytechnical UniversityXi’an710072China Section for Computational and RNA Biology Department of BiologyUniversity of CopenhagenCopenhagenDK-2100Denmark University of Chinese Academy of Sciences Beijing100049China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming650223China CEMS NCMISMDISAcademy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100080China Marine Mammal and Marine Bioacoustics Laboratory Institute of Deep-sea Science and EngineeringChinese Academy of SciencesSanya572000China College of Life Sciences Shihezi UniversityShihezi832003China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of Animal Science and TechnologyGuangxi UniversityNanning530005China College of Animal Science and Technology Yangzhou UniversityYangzhou225009China Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China Yangzhou UniversityYangzhou225009China Key Laboratory for Major Obstetric Diseases of Guangdong Province The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150China School of Life Science and Technology Shanghai Tech UniversityShanghai201210China College of Animal Science and Technology Nanjing Agricultural UniversityNanjing210095China College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering&TechnologyNorthwest A&F UniversityYangling712100China Department of Special Economic Animal Nutrition and Feed Science Institute of Special Animal and Plant SciencesChinese Academy of Agricultural SciencesChangchun130112China Section for Ecology and Evolution Department of BiologyUniversity of CopenhagenCopenhagenDK-2100Denmark China National GeneBank BGI-ShenzhenShen

The rumen is the hallmark organ of ruminants and hosts a diverse ecosystem of microorganisms that facilitates efficient digestion of plant *** analyzed 897 transcriptomes from three Cetartiodactyla lineages:ruminants,camels and cetaceans,as well as data from ruminant comparative genomics and functional assays to explore the genetic basis of rumen functional *** identified genes with relatively high expression in the rumen,of which many appeared to be recruited from other *** genes show functional enrichment in ketone body metabolism,regulation of microbial community,and epithelium absorption,which are the most prominent biological processes involved in rumen *** modes of genetic change underlying rumen functional innovations were uncovered,including coding mutations,genes newly evolved,and changes of regulatory *** validated that the key ketogenesis rate-limiting gene(HMGCS2)with five ruminant-specific mutations was under positive selection and exhibits higher synthesis activity than those of other *** newly evolved genes(LYZ1 and DEFB1)are resistant to Gram-positive bacteria and thereby may regulate microbial community ***,we confirmed that the changes of regulatory elements accounted for the majority of rumen gene *** results greatly improve our understanding of rumen evolution and organ evo-devo in general.

关键词： rumen innovations comparative transcriptomics comparative genomics evo-devo evolution of organs

来源：评论

学校读者我要写书评

暂无评论

Highly Efficient Acetone Oxidation Over Homogeneous Mn-Al Oxides with Enhanced Oms-2 Active Phase

SSRN

引用

SSRN 2022年

作者： Li, Ying-Ying Zhang, Wan-Peng Zhao, Junyi Wu, Kun Xiao, Hang Li, Jian-Rong Xiamen Key Laboratory of Gaseous Pollutant Control Materials Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China Zhongke Haixi Industrial Technology Innovation Center Ningbo315021 China Department of Environmental Science and Engineering Fuzhou University Fuzhou350108 China

The homogeneous dispersed material with enhanced active species plays a dominant role in the catalytic activity. The Mn-Al oxides are facilely synthesized by the hydrolysis-driven redox-precipitation method. The OMS-2 active phase and surface property can be effectiveness adjusted by Al/Mn molar ratio, which alter the acetone conversion and CO2 selectivity of prepared catalysts. Among them, MnAl0.15 exhibits the best catalytic performance (90% of acetone converted at 168 °C) with CO2 selectivity higher than 95%, mainly owing to its abundant Olatt and Mn3+ with weaker Mn-O bond. Although the presence of H2O results in the slow consumption rate of acetic acid that leads to the slightly reduction of acetone conversion and CO2 yield, the MnAl0.15 still exhibits superior catalytic stability. The PTR-MS and in situ DRIFTS demonstrate that the acetone can firstly be oxidized to acetaldehyde and ethanol, and then further decomposed to acetic acid and formic acid before totally mineralization. © 2022, The Authors. All rights reserved.

关键词： Acetone

来源：评论

学校读者我要写书评

暂无评论

A Metal-Free Z-Scheme Ppy/Mcn Heterojunction for Antibiotic Removal Via Synergism of Photocatalysis and Peroxymonosulfate Activation

SSRN

引用

SSRN 2024年

作者： Kou, Lidong Lei, Jinye Li, Qingyuan Zhang, Siyu Jia, Junjun Jiang, Kai Zhang, Ming Wang, Jing School of Environment Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control Ministry of Education Henan Key Laboratory for Environmental Pollution Control Henan Normal University Henan Xinxiang453007 China Institute of Chemistry Henan Academy of Sciences Henan Zhengzhou450002 China College of Chemistry and Molecular Sciences Henan University Henan Kaifeng450046 China School of Materials Science and Engineering Zhengzhou University Henan Zhengzhou450001 China School of Materials and Energy University of Electronic Science and Technology of China Sichuan Chengdu611731 China No. 56 Hongzhuan Road Zhengzhou450002 China

Herein, a metal-free Z-scheme polypyrrole (PPy)/melamine-derived graphitic carbon nitride (MCN) heterojunction photocatalyst was synthesized via calcination and in-situ loading for catalyzing the degradation of ciprofloxacin (CIP) and other emerging pollutants in a light-emitting diode (LED)/PMS synergistic system. The optimal 0.5%PPy/MCN performed well under a wide pH range (3-11), while exhibiting superior anti-interference for common water constituents and outstanding reusability and stability. Mechanistic investigation and theoretical calculations revealed that the high conductivity and strong light absorption of PPy facilitated the generation and separation of electrons (e-) and holes (h+) in 0.5%PPy/MCN/LED and activated PMS for generating reactive species such as •O2- and 1O2 for CIP degradation. The possible CIP degradation pathways were ammonia oxidation, ring-opening, cracking hydroxylation, and elimination reactions. These reactions could substantially reduce the toxicity of degradation by-products as revealed by antibacterial tests. This study promotes the development of efficient metal-free catalysts for treating and remediating emerging pollutants. © 2024, The Authors. All rights reserved.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Catalytic Hydrothermal Liquefaction of Heavy Metal-Accumulating Plants Over Attapulgite Catalyst for Bio-Oil Production: Characterization, Heavy Metals Migration and Mechanisms

SSRN

引用

SSRN 2022年

作者： Yu, Xiaofeng Zhu, Zhe Guo, Xiangyu Zhang, Shuo Sun, Zhiqiang Bai, Ying Li, Qian Chen, Guanyi Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology School of Environmental Science and Safety Engineering Tianjin University of Technology Tianjin300384 China Hengshui Comprehensive Law Enforcement Detachment of Ecological Environment Protection Hengshui053000 China School of Mechanical Engineering Tianjin University of Commerce Tianjin300134 China

Harmless treatment of metal-accumulating plants and control the distribution of heavy metals is a crucial step for industrialization of phytoremediation. In this study, hydrothermal liquefaction (HTL) of low metal-accumulating plants (Jute, Solanum nigrum, and Sorghum) was conducted at temperatures of 280 to 360 oC for bio-oil production. Attapulgite (ATP) or Co/ATP was prepared and applied in HTL process, which aimed to catalyze the formation of bio-oil and assist heavy metal recovery from polluted plants. The maximum bio-oil yield reached 32.04% with HHV of 29.61 MJ/kg from HTL of Solanum nigrum with Co/ATP at 300 oC, and phenols accounted for 60.33% of total volatile compounds in bio-oil through GC-MS analysis. Besides, the O/C decreased from 0.32 to 0.26. Characterization analysis of hydrochar showed that high temperature or addition of ATP or Co/ATP was beneficial for immobilization of Mn, Zn and Cr in solid phase. Especially, more than 90.81% of Mn mainly remained in the hydrochar for Jute and Sorghum, and higher than 83.16% of Zn converted in hydrochar for Solanum nigrum. Notably, Mn and Cd were not detected in any bio-oil. Further XPS and XRD analysis indicated that Mn and Zn existed in the form of Mn3O4, Mn, ZnO and Zn(OH)2 in hydrochar. Finally, potential transformation pathway of heavy metals migration-transformation behaviors during HTL was proposed. © 2022, The Authors. All rights reserved.

关键词： Heavy metals

来源：评论

学校读者我要写书评

暂无评论

Seep-Carbonate Clumped Isotopes Revealing Ocean Warming-Induced Gas Hydrate Dissociation

SSRN

引用

SSRN 2023年

作者： Liu, Lei Guan, Hongxiang Wu, Nengyou Chang, Biao Chen, Fang Feng, Dong Li, Sanzhong Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Lab of Submarine Geosciences and Prospecting Techniques MOE and College of Marine Geosciences Ocean University of China Qingdao266100 China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao266061 China Department of Environment Science and Engineering Ocean University of China Qingdao266100 China Key Laboratory of Gas Hydrate Qingdao Institute of Marine Geology Ministry of Natural Resources Qingdao266071 China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan430074 China MNR Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological Survey Guangzhou510075 China College of Marine Sciences Shanghai Ocean University Shanghai201306 China

The dissociation of marine hydrate due to increased ocean temperature may be widespread in the context of global warming. However, there is limited direct evidence for this phenomenon. We reported the carbon and oxygen isotope measurements in this study, and we further employed clumped isotopes (Δ47) of coring seep carbonates generated during the MIS5e sea-level highstand. The extremely low δ13C and high δ18O values of bulk carbonates (averaged as −48.10/00 and 4.40/00, respectively), indicated that the authigenic carbonates formed from the anaerobic oxidation of methane (AOM) and methane hydrate dissociation. The Δ47 values ranged from 0.714 to 0.745, indicating a higher bottom-water temperature (averaged at 7.5°C) during MIS5e compared with the current temperature (5.4°C). This provides direct evidence that the dissociation of hydrate is triggered by ocean warming. This study provides new insights into the temperature-induced gas hydrate dissociations under global climate warming. © 2023, The Authors. All rights reserved.

关键词： Gas hydrates

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：