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Selenium vacancies regulate d-band centers in Ni_(3)Se_(4)toward paired electrolysis in anion-exchange membrane electrolyzers for upgrading N-containing compounds

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Science China Chemistry 2023年第7期66卷 2109-2120页

作者： Feng Yue chuantao wang Wen Duan Huijuan Pang Tingting Wei Kaixin Xue Danjun wang Feng Fu Chunming Yang Research Institute of Comprehensive Energy Industry Technology College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China

Paired electrolysis in anion-exchange membrane(AEM)electrolyzers toward the cathodic nitrate reduction reaction(NO_(3)RR)and anodic benzylamine oxidation reaction(BOR)could generate high value-added N-containing compounds simultaneously.The key challenge is to develop bifunctional electrocatalysts with a wide potential window,which can achieve highly efficient conversion of anode and cathode reactants.Herein,Ni_(3)Se_(4)with Se vacancies was prepared and employed as the cathode and anode of AEM electrolyzers for NO_(3)RR and BOR.^(15)N isotope-labeling online differential electrochemical mass spectrometry(DEMS)proved that ammonium was reduced from nitrates and revealed the reaction pathway of NO_(3)RR.The density functional theory calculation clarified that Se vacancies regulate d-band centers,and then further modulate the adsorption energy of adsorbed hydrogen,NO_(3)^(-)and intermediates on the Ni_(3)Se_(4)-60s surface in NO_(3)RR,so as to optimize the hydrogenation of NO_(3)^(-)into ammonia.Moreover,during the BOR,the Se vacancy can promote the adsorption of OH^(-),which is easier to form the active species of Ni OOH.The technical and economic evaluation exhibited that the cost of paired electrolysis is 1.21 times lower and the profit is 1.42 times higher than that of the unpaired electrolysis,which shows the economic attraction of paired electrolysis.This work delivers the guidance for the design of efficient catalysts for paired electrolysis in AEM electrolyzer toward the sustainable synthesis of value-added chemicals.

关键词： Ni_(3)Se_(4) controllable selenium vacancy paired electrolysis AEM electrolyzer upgrading N-containing compounds

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Selenium vacancies regulate d-band centers in NiSetoward paired electrolysis in anion-exchange membrane electrolyzers for upgrading N-containing compounds

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Science China Chemistry 2023年

Paired electrolysis in anion-exchange membrane(AEM) electrolyzers toward the cathodic nitrate reduction reaction(NO3RR)and anodic benzylamine oxidation reaction(BOR) could generate high value-added N-containing compounds simultaneously.The key challenge is to develop bifunctional electrocatalysts with a wide potential window, which can achieve highly efficient conversion of anode and cathode reactants. Herein, Ni3Se4with Se vacancies was prepared and employed as the cathode and anode of AEM electrolyzers for NO3RR and BOR.15N isotope-labeling online differential electrochemical mass spectrometry(DEMS) proved that ammonium was reduced from nitrates and revealed the reaction pathway of NO3RR. The density functional theory calculation clarified that Se vacancies regulate d-band centers, and then further modulate the adsorption energy of adsorbed hydrogen, NO3-and intermediates on the Ni3Se4-60s surface in NO3RR, so as to optimize the hydrogenation of NO3-into ammonia. Moreover, during the BOR, the Se vacancy can promote the adsorption of OH-, which is easier to form the active species of NiOOH. The technical and economic evaluation exhibited that the cost of paired electrolysis is 1.21 times lower and the profit is 1.42 times higher than that of the unpaired electrolysis, which shows the economic attraction of paired electrolysis.This work delivers the guidance for the design of efficient catalysts for paired electrolysis in AEM electrolyzer toward the sustainable synthesis of value-added chemicals.

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面向流域治理与城镇发展统筹的城市水系统规划协同机制探讨 ——广东东莞生态园实证研究

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水利学报 2024年第3期55卷 278-287页

作者：王成坤黄纪萍王川涛蔡婳婳王俊佳刘悦忆中国城市规划设计研究院深圳分院广东深圳518000 东莞理工学院生态环境与建筑工程学院广东东莞523000

统筹流域治理与城镇发展是系统解决当前城市发展过程中遇到的水资源短缺、水生态破坏、洪涝灾害频发的关键路径。本文在辨析流域治理与城镇发展统筹面临的主要问题及其辩证关系的基础上,以东莞市中部地区的生态园及其所在的寒溪河流域... 详细信息

统筹流域治理与城镇发展是系统解决当前城市发展过程中遇到的水资源短缺、水生态破坏、洪涝灾害频发的关键路径。本文在辨析流域治理与城镇发展统筹面临的主要问题及其辩证关系的基础上,以东莞市中部地区的生态园及其所在的寒溪河流域为研究对象,系统探讨了城市水系统规划在流域治理与城镇发展统筹中的协同作用机制。结果表明,以城镇-流域水系统耦合模型为支撑,城市水系统规划及其协同机制可通过空间、设施等要素的协同,实现保障城市及流域防洪排涝安全、保护水环境和节约水资源的目标,促进流域安全与城镇发展的良性互动。

关键词：流域治理与城镇发展统筹城市水系统规划协同机制实证研究

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Prediction of Coal Bed Methane Recovery Rate and Its Improvement Measures in Dafosi Mine Field

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Journal of Power and Energy Engineering 2017年第11期5卷 37-49页

作者： Dongmin Ma Chenyang Zhang chuantao wang Xiaoyan Tang College of Geology and Environment Xi’an University of Science and Technology Xi’an China National Energy Key Laboratory of Coal and CBM Simultaneous Extraction Jincheng China

The recovery rate of coalbed methane (CBM) can reflect the mining situation and the residual gas in coal reservoir. It plays an important role in the calculation of the recoverable resources. This paper mainly uses isothermal adsorption curve method and hydraulic model method to predict recovery rate of CBM. The isothermal adsorption curve method considering desorption lag problem in the prediction process, which is more in line with the actual situation. In the hydraulic model method, the recovery rate of “V” type well is the largest in the early stage. But with the time going on, the recovery rate of multilateral horizontal well is greater than vertical well, “U” type well and “V” type well finally. The factors affecting CBM recovery rate include geological characteristics, development conditions and economic factors. The geological characteristics of coal reservoir are the main factors affecting CBM recovery rate, and corresponding measures can be adopted to improve the recovery rate.

关键词： Recovery Rate Isothermal Adsorption Curve Method Hydraulic Model Method

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Pore Characteristics of Vitrain and Durain in Low Rank Coal Area

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Journal of Power and Energy Engineering 2017年第11期5卷 10-20页

作者： Dongmin Ma Qian Li Qian He chuantao wang College of Geology and Environment Xi’an University of Science and Technology Xi’an China National Energy Key Laboratory of Coal and CBM Simultaneous Extraction Jincheng China

The low rank coalbed methane (CBM) has great potential for exploration and development in China, but its exploitation level is low at present stage. The pores are the storage space of CBM, so recognizing its structural characteristics has very important practical significance for the development of CBM. The samples of No. 4 and upper No. 4 coalbed in Dafosi were selected to carry out the analysis of mercury injection test, nitrogen adsorption test and scanning electron microscopy to study the different lithotypes of the pore structure, pore throat distribution and fracture character of low rank coal reservoir. The results showed that micropore of low rank coal in Dafosi relatively developed and the pore volume of vitrain was equivalent to durain. The pore throat of durain was larger than vitrain, the connectivity was better and the fissures were more developed. The percolation capacity and reservoir performance of upper No. 4 coal was better than No. 4 coal. Generally, the potential of exploration and development of upper No. 4 coal in the study area was better than that of No. 4, and the developed area of durain was more beneficial for the development of CBM.

关键词： Low Rank Coal Vitrain Durain Pore Characteristic Coalbed Methane

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Optimization Design of Fracturing Parameters for Coalbed Methane Wells in Dafosi Mine Field

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Journal of Power and Energy Engineering 2017年第9期5卷 121-131页

作者： chuantao wang Dongmin Ma Qian He Qian Li Pengcheng Liu College of Geology and Environment Xi’an University of Science and Technology Xi’an China National Energy Key Lab of Coal and CBM Simultaneous Extraction Jincheng China

Being controlled by the gas content of the reservoir, the productivity of CBM well is also mainly determined by its engineering quality and the physical property of the reservoir. In Dafosi mine field, 22 vertical wells from the “26 + 1” CBM wells project that was implemented since 2014 showed great difference in productivity after fracturing construction. With the consistent geological condition of coal reservoirs, fracturing construction parameters are suggested as the priority factor that controlling the well productivity. In this study, being combined with historical production and geological data, an optimized designation of fracturing construction parameters was established based on systematically comparative analysis of construction parameters such as discharge, the total volume of fracturing fluid, the quality of sand, sand ratio, which provides engineering basis for further fracturing construction of CBM wells.

关键词： Dafosi Mine Field “26 + 1” CBM Wells Project Fracturing Construction Parameters Gas Production Effect

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低阶煤不同宏观煤岩组分孔隙发育特征及甲烷吸附/解吸性能差异

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河南理工大学学报（自然科学版） 2024年第2期43卷 57-67页

作者：李卫波李菲史利燕周少伟马东民王传涛陈跃陕西省地质科技中心陕西西安710054 西安科技大学地质与环境学院陕西西安710054 延安大学化学与化工学院陕西延安716000

目的针对煤储层非均质性较强,不同宏观煤岩组分由于物质成分和孔隙结构差异导致煤层气吸附解吸性能和气水运移特征迥异的问题,方法以黄陇煤田彬长矿区延安组低阶煤为研究对象,采集并分离镜煤和暗煤组分,综合运用显微组分测定、元素分析... 详细信息

目的针对煤储层非均质性较强,不同宏观煤岩组分由于物质成分和孔隙结构差异导致煤层气吸附解吸性能和气水运移特征迥异的问题,方法以黄陇煤田彬长矿区延安组低阶煤为研究对象,采集并分离镜煤和暗煤组分,综合运用显微组分测定、元素分析、压汞、低温液氮吸附、吸附解吸试验等测试方法,研究低阶镜煤和暗煤的孔隙发育特征差异和对甲烷吸附/解吸性能的影响。结果结果表明:(1)镜煤的镜质组质量分数、挥发分及H,O,N,S元素质量分数高于暗煤的,而惰质组、壳质组、矿物、灰分、固定碳和C元素质量分数低于暗煤的。(2)煤样孔隙度为2.92%~10.29%,总体孔隙较发育,暗煤孔隙度略高于镜煤的,孔喉更粗,大孔更发育,连通性更好。镜煤BET比表面积和BJH总孔容均略大于暗煤的,微孔更发育,且多以半封闭型和墨水瓶型孔隙为主。(3)镜煤微小孔更发育,比表面积更大,吸附能力更强。结论煤中甲烷吸附/解吸过程普遍存在解吸滞后现象,暗煤孔隙连通性相对较好,解吸滞后程度低于镜煤的,理论解吸效率高于镜煤的。研究结果可为彬长矿区低阶煤煤层气储层物性认识提供参考。

关键词：黄陇煤田低煤阶煤岩组分孔隙结构吸附解吸

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系统化全域推进海绵城市建设实施方案编制思考——以东莞市为例

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中国防汛抗旱 2024年第6期34卷 33-40页

作者：蔡婳婳王川涛王成坤曹喆牛宇琛熊凯里中国城市规划设计研究院深圳分院深圳518000

自2012年起,国家倡导各地以海绵城市建设试点为契机,打造宜居、绿色、韧性、智慧、人文城市,经过10余年的发展,建设海绵城市已成为重要的城市发展理念。在全新的系统化全域海绵城市建设背景下,以东莞市为例,以全域生态红线、城市蓝线、... 详细信息

自2012年起,国家倡导各地以海绵城市建设试点为契机,打造宜居、绿色、韧性、智慧、人文城市,经过10余年的发展,建设海绵城市已成为重要的城市发展理念。在全新的系统化全域海绵城市建设背景下,以东莞市为例,以全域生态红线、城市蓝线、城市绿线、蓄滞洪区等重要的生态蓝绿空间管控为基础,构建连续完整的全域生态基础设施体系。在此基础上,为进一步突出示范特色,选取中心城区、松山湖高新区、谢岗镇作为重点示范建设区域(相关流域范围一并纳入),分别从老城区、新城区、小城镇3种不同区域,探索总结系统化全域推进海绵城市建设的经验做法,拟为类似城市开展相关研究提供借鉴与参考。

关键词：海绵城市系统化全域实施方案东莞市

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Ligand-dependent aggregation-enhanced photoacoustic of atomically precise metal nanocluster

Aggregate

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Aggregate 2024年第1期5卷 196-203页

作者： Changlin Zhou Meng wang Qiaofeng Yao Yu Zhou chuantao Hou Jianfei Xia Zonghua wang Jishi Chen Jianping Xie College of Chemistry and Chemical Engineering Shandong Sino-Japanese Center for Collaborative Research of Carbon NanomaterialsInstrumental Analysis Center of Qingdao UniversityQingdao UniversityQingdaoP.R.China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin UniversityTianjinP.R.China Qingdao Boting Hydrogen Age Ocean Technol R&D Ctr. Qingdao Boting Technol Co.Ltd.Shandong Hydrogen Times Marine Technology Co.Ltd.QingdaoP.R.China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhouP.R.China

Atomically precise metal nanoclusters(MNCs),as a potential type of photoacoustic(PA)contrast agent,are limited in application due to their low PA conversion efficiency(PACE).Here,with hydrophilic Au25SR18(SR=thiolate)as model NCs,we present a result that weakly polar solvent induces aggregation,which effectively enhances PA intensity and PACE.The PA intensity and PACE are highly dependent on the degree of aggregation,while the aggregation-enhanced PA intensity(AEPA)positively correlates to the protected ligands.Such an AEPA phenomenon indicates that aggregation actually accelerates the intramolecular motion of Au NCs,and enlarges the proportion of excited state energy dissipated through vibrational relaxation.This result conflicts with the restriction of intramolecular motion mechanism of aggregation-induced emission.Further experiments show that the increased energy of AEPA originates from the aggregation inhibiting the intermolecular energy transfer from excited Au NCs to their surrounding medium molecules,including solvent molecule and dissolved oxygen,rather than restricting radiative relaxations.This study develops a new strategy for enhancing the PA intensity of Au NCs,and contributes to a deeper understanding of the origin of the PA signal and the excited state energy dissipation processes for MNCs.

关键词： aggregation-enhanced photoacoustic gold nanocluster intermolecular excited state energy transfer intramolecular motion ligand effect

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Recent progress in the applications of presynaptic dopaminergic positron emission tomography imaging in parkinsonism

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Neural Regeneration Research 2025年第1期20卷 93-106页

作者： Yujie Yang Xinyi Li Jiaying Lu Jingjie Ge Mingjia Chen Ruixin Yao Mei Tian Jian wang Fengtao Liu chuantao Zuo Key Laboratory of Arrhythmias Ministry of EducationDepartment of Medical GeneticsShanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina Department of Neurology National Research Center for Aging and MedicineNational Center for Neurological Disordersand State Key Laboratory of Medical NeurobiologyHuashan HospitalFudan UniversityShanghaiChina Department of Nuclear Medicine&PET Center National Center for Neurological Disordersand National Clinical Research Center for Aging and MedicineHuashan HospitalFudan UniversityShanghaiChina International Human Phenome Institutes(Shanghai) ShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Nowadays,presynaptic dopaminergic positron emission tomography,which assesses deficiencies in dopamine synthesis,storage,and transport,is widely utilized for early diagnosis and differential diagnosis of parkinsonism.This review provides a comprehensive summary of the latest developments in the application of presynaptic dopaminergic positron emission tomography imaging in disorders that manifest parkinsonism.We conducted a thorough literature search using reputable databases such as PubMed and Web of Science.Selection criteria involved identifying peer-reviewed articles published within the last 5 years,with emphasis on their relevance to clinical applications.The findings from these studies highlight that presynaptic dopaminergic positron emission tomography has demonstrated potential not only in diagnosing and differentiating various Parkinsonian conditions but also in assessing disease severity and predicting prognosis.Moreover,when employed in conjunction with other imaging modalities and advanced analytical methods,presynaptic dopaminergic positron emission tomography has been validated as a reliable in vivo biomarker.This validation extends to screening and exploring potential neuropathological mechanisms associated with dopaminergic depletion.In summary,the insights gained from interpreting these studies are crucial for enhancing the effectiveness of preclinical investigations and clinical trials,ultimately advancing toward the goals of neuroregeneration in parkinsonian disorders.

关键词： aromatic amino acid decarboxylase brain imaging dopamine transporter Parkinson’s disease parkinsonism positron emission tomography presynaptic dopaminergic function vesicle monoamine transporter type 2

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