检索结果-南通市图书馆

Metal-encapsulated nitrogen-doped carbon nanotube arrays electrode for enhancing sulfion oxidation reaction and hydrogen evolution reaction by regulating of intermediate adsorption

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第8期35卷 533-538页

作者： Xiao Li Wanqiang yu yujie Wang Ruiying Liu Qingquan yu Riming Hu Xuchuan Jiang Qingsheng Gao Hong Liu jiayuan yu Weijia Zhou Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJi’nan 250022China Institute for Smart Materials&Engineering School of Materials Science and EngineeringUniversity of JinanJi’nan 250022China College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsJinan UniversityGuangzhou 510632China State Key Laboratory of Crystal Materials Shandong UniversityJi’nan 250100China

For treatment of sulfion-containing wastewater,coupling the electrochemical sulfion oxidation reaction(SOR)with hydrogen evolution reaction(HER)can be an ideal way for sulfur and H_(2)resources ***,we synthesize a metal-modified carbon nanotube arrays electrode(Co@N-CNTs/CC)for SOR and *** electrode has excellent performance for SOR and HER attributed to the unique array *** can achieve 99.36 mA/cm^(2)at 0.6 V for SOR,and 10 mA/cm^(2)at 0.067 V for *** functional theory calculations verify that metal modification is able to regulate the electronic structure of carbon nanotube,which is able to optimize the adsorption of *** Co@N-CNTs/CC as bifunctional elec-trodes to establish a hybrid electrolytic cell can reduce about 67%of energy consumption compared with the traditional water splitting electrolytic ***,the hybrid electrolytic cell is used to treat actual sulfion-containing wastewater,achieving the sulfur yield of 30 mg h^(−1)cm^(−2)and the hydrogen production of 0.64 mL/min.

关键词： Sulfion oxidation reaction Hydrogen evolution reaction Nitrogen-doping carbon nanotube Core-shell structure Resource upgrade

中国石化双氧水法制环氧丙烷工业开发及关键科技问题

在线全文

学校读者我要写书评

暂无评论

石油炼制与化工 2024年第1期55卷 130-134页

作者：夏长久于佳元林民朱斌彭欣欣舒兴田中石化石油化工科学研究院有限公司石油化工分子转化与反应工程全国重点实验室北京100083

为克服现有环氧丙烷(PO)生产技术弊端,中国石化采用表面富硅空心钛硅分子筛为活性组元的催化剂,开发了新型双氧水法制备环氧丙烷(HPPO)成套技术,建成了国内首套100 kt a HPPO工业装置。催化剂以表面富硅多空心钛硅分子筛为活性组元,采... 详细信息

为克服现有环氧丙烷(PO)生产技术弊端,中国石化采用表面富硅空心钛硅分子筛为活性组元的催化剂,开发了新型双氧水法制备环氧丙烷(HPPO)成套技术,建成了国内首套100 kt a HPPO工业装置。催化剂以表面富硅多空心钛硅分子筛为活性组元,采用高效羟基偶联黏结剂,提高了活性组元含量和催化剂强度。开发了器内低温原位复活技术。以复合助剂调控双氧水与骨架钛形成“五元环”过渡态,大幅提升PO选择性。开发出PO低温分离、萃取蒸馏和化学脱杂耦合的产品分离精制技术,提升产品质量。将PO废水作为炼油厂催化裂化装置的终止剂,使有机物裂解成乙烯、丙烯等低碳烃。与国外先进技术相比:双氧水转化率高3.3%,PO选择性高3.6%;产品中杂质总醛含量低80%,水分低50%;产品纯度达99.99%,优级品率达到100%。

关键词：空心钛硅分子筛 HPPO 环氧丙烷环氧化

A novel synthetic method of porous and nanoflower-like Al_(2)O_(3)/MoS_(2)catalyst for reduction of SO_(2)to elemental sulfur

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 6076-6084页

作者： Yiqian Yang jiayuan yu yu Chen Gang Wang Chunshan Li Erqiang Wang Zhijian Peng School of Engineering and Technology China University of GeosciencesBeijing 100083China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

MoS_(2)nanoflowers are favored for their potential in the production of elemental sulfur due to abundant surface area and good catalytic performance for reducing SO_(2).A novel synthetic strategy of porous Al_(2)O_(3)supported on the MoS_(2)with nanoflower structure was *** effects of preparation concentration,calcination atmosphere,Al_(2)O_(3)contents on the growth of catalysts with nanoflower structure were systematically studied via X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),transmission electron microscopy(TEM),Fourier transform infrared(FTIR)spectroscopy,Brunauer–Emmett–Teller(BET).The surface area was increased to 295.502 m^(2)/g and the amount of Lewis acid on the surface of the Al_(2)O_(3)/MoS_(2)catalyst was increased by adjusting the ratio of Al/*** porous and nanoflower structures of Al_(2)O_(3)/MoS_(2)catalysts promoted the sulfur selectivity without inhibiting the catalytic performance of MoS_(2).The conversion of SO_(2)and the selectivity of sulfur were 100%and 92%after 100 h life evaluation.

关键词： porous catalyst nanoflower reduction of SO_(2) sulfur production hydrogen

外周血淋巴细胞亚群与颈动脉粥样硬化发生的关联性分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

吉林大学学报（医学版） 2024年第5期50卷 1400-1405页

作者：于佳园赵娣姜新徐静姜丽丽姜宏宇吉林大学第一医院体检中心吉林长春130021

目的:分析外周血淋巴细胞亚群与颈动脉粥样硬化(CAS)发生的关联性,探讨CAS发生的危险因素,为CAS的风险预测和早期干预提供依据。方法:按照纳入和排除标准选取419名体检者作为研究对象,行颈动脉超声检查和T淋巴细胞、B淋巴细胞及自然杀伤... 详细信息

目的:分析外周血淋巴细胞亚群与颈动脉粥样硬化(CAS)发生的关联性,探讨CAS发生的危险因素,为CAS的风险预测和早期干预提供依据。方法:按照纳入和排除标准选取419名体检者作为研究对象,行颈动脉超声检查和T淋巴细胞、B淋巴细胞及自然杀伤(NK)细胞亚群检测,根据颈动脉内中膜厚度(IMT)将研究对象分为颈动脉正常组(n=166)和CAS组(n=253),收集2组研究对象的基本资料和实验室检查指标,包括年龄、性别、血压、既往病史、吸烟史、用药史、血脂及T淋巴细胞、B淋巴细胞和NK细胞亚群百分率等,采用Logistic回归分析研究对象CAS发生的危险因素。结果:单因素分析,与颈动脉正常组比较,CAS组患者年龄、高血压患病率、糖尿病患病率和吸烟率均升高(P<0.05),外周血中CD4+T淋巴细胞百分率、CD4+T淋巴细胞计数、CD4+/CD8+比值、CD16+CD56+NK细胞计数及低密度脂蛋白胆固醇(LDL-c)水平升高(P<0.05), CD8+T淋巴细胞百分率降低(P<0.05)。多因素Logistic回归分析,年龄(OR=1.112,95%CI:1.083~1.142, P<0.001)、吸烟(OR=1.997, 95%CI:1.192~3.346, P=0.009)、LDL-c (OR=1.427, 95%CI:1.017~2.001, P=0.039)和CD4+T淋巴细胞百分率(OR=1.044,95%CI:1.002~1.087,P=0.039)是CAS发生的独立危险因素。结论:CD4+T淋巴细胞百分率与CAS发生有关联,是CAS的危险预测因素。

关键词：动脉粥样硬化颈动脉粥样硬化危险因素自然杀伤细胞低密度脂蛋白胆固醇

维普期刊数据库博看期刊

Enhanced electrocatalytic activity of Co@N-doped carbon nanotubes by ultrasmall defect-rich TiO2 nanoparticles for hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2017年第8期10卷 2599-2609页

作者： jiayuan yu Weijia Zhou Tanli Xiong Aili Wang Shaowei Chen Benli Chu School of Environment and Energy Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China School of Physics and Telecommunication Engineering South China Normal University Guangzhou Higher Education Mega Center Guangzhou 510006 China Department of Chemistry and Biochemistry University of California 1156 High Street Santa Cruz CA 95064 USA

Despite being technically possible, splitting water to generate hydrogen is practically unfeasible, mainly because of the lack of sustainable and efficient earth-abundant catalysts for the hydrogen-evolution reaction （HER）. Herein, we report a durable and highly active electrochemical HER catalyst based on defect-rich TiO2 nanoparticles loaded on Co nanoparticles@N-doped carbon nanotubes （D-TiOdCo@NCT） synthesized by electrostatic spinning and a subsequent calcining process. The ultrasmall TiO2 nanoparticles are 1.5-2 nm in size and have a defect-rich structure of oxygen vacancies. D-TiO2/Co@NCT exhibits excellent HER catalytic activity in an acidic electrolyte （0.5 M H2SO4）, with a low onset potential of -57.5 mV （1 mA·cm^-2）, a small Tafel slope of 73.5 mV·dec^-1, and extraordinary long-term durability. X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy, and theoretical calculations confirm that the Ti3. defect-rich structure can effectively regulate the catalytic activity for electrochemical water splitting.

关键词： ultrasmall nanoparticle TiO2 defect structure carbon nanotube hydrogen-evolution reaction

Water Splitting:From Electrode to Green Energy System

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2020年第10期12卷 103-131页

作者： Xiao Li Lili Zhao jiayuan yu Xiaoyan Liu Xiaoli Zhang Hong Liu Weijia Zhou Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinan 250022People’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100People’s Republic of China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China

Hydrogen(H2)production is a latent feasibility of renewable clean *** industrial H2 production is obtained from reforming of natural gas,which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon *** water splitting is a promising approach for the H2 production,which is sustainable and ***,developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the *** utilization of green energy systems to reduce overall energy consumption is more important for H2 *** and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption.A variety of green energy systems for efficient producing H2,such as two-electrode electrolysis of water,water splitting driven by photoelectrode devices,solar cells,thermoelectric devices,triboelectric nanogenerator,pyroelectric device or electrochemical water-gas shift device,have been developed *** this review,some notable progress made in the different green energy cells for water splitting is discussed in *** hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H2 energy,which will realize the whole process of H2 production with low cost,pollution-free and energy sustainability conversion.

关键词： Water splitting Electrode Green energy system Renewable energy Hydrogen production

Chromium phosphide nanoparticles embedded in porous nitrogen-/phosphorus-doped carbon as efficient electrocatalysts for a nitrogen reduction reaction

在线全文

学校读者我要写书评

暂无评论

Carbon Energy 2022年第2期4卷 237-245页

作者： jiayuan yu Bin Chang Wanqiang yu Xiao Li Dufu Wang Zhinian Xu Xiaoli Zhang Hong Liu Weijia Zhou Institute for Advanced Interdisciplinary Research(IAIR) Shandong Collaborative Innovation Center of Technology and Equipements for Biological Diagnosis and TherapyUniversity of JinanJinanChina Shandong Best Environmental Technology Co.Ltd. JinanChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhouChina State Key Laboratory of Crystal Materials Shandong UniversityJinanChina

The resource recovery of heavy metals from effluent has significant environmental implications and potential commercial *** phosphide nanoparticles embedded in a nitrogen-/phosphorus-doped porous carbon matrix(CrP/NPC)are synthesized via a consecutive Cr^(6+)leachate treatment and resource recovery *** testing shows that CrP/NPC shows excellent nitrogen reduction reaction(NRR)performance,which yields the highest NH_(3) production rate of 22.56μg h^(−1) mg^(−1)_(cat).and Faradaic efficiency(16.37%)at−0.5 V versus the reversible hydrogen electrode in a 0.05M Na_(2)SO_(4) aqueous solution,as well as robust catalytic *** isotopic experiments using ^(15)N^(2) as a nitrogen source confirm that the detected NH_(3) is derived from the NRR ***,density functional theory(DFT)calculations show that the electron deficiency environment of the Cr site can significantly reduce the barrier of the NRR process and promote the formation of intermediate species.

关键词： biosynthesis carbon-based materials chromium phosphide leachate treatment nitrogen reduction reaction resource recovery

Waste-yeast biomass as nitrogen/phosphorus sources and carbon template:Environment-friendly synthesis of N,P-Mo_(2)C nanoparticles on porous carbon matrix for efficient hydrogen evolution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第6期33卷 3231-3235页

作者： jiayuan yu Wanqiang yu Bin Chang Xiao Li Jin Jia Dufu Wang Zhinian Xu Xiaoli Zhang Hong Liu Weijia Zhou Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJi'nan 250022China Shandong Best Environmental Technology Co. Ltd.Ji'nan 250J01 China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Crystal Materials Shandong UniversityJi'nan 250100China

Tailor-made advanced electrocatalysts with high active and stable for hydrogen evolution reaction(HER)play a key role in the development of hydrogen ***,a N,P-co-doped molybdenum carbide confined in porous carbon matrix(N,P-Mo_(2)C/NPC)with a hierarchical structure is prepared by a resources recovery *** N,P-Mo_(2)C/NPC compound exhibits outstanding HER activity with a low overpotential of 84 mV to achieve 10 mA/cm^(2),and excellent stability in alkaline *** electrochemical measurements confirm that the enhanced HER activity of N,P-Mo_(2)C/NPC is ascribe to the synergy of N,P-codoped and porous carbon *** functional theory calculations further reveal that the electron density of active sites on Mo_(2)C can be regulated by the N/P doping,leading to optimal H adsorption *** this work,the proof-of-concept resource utilization,a microorganism derived molybdenum carbide electrocatalyst for HER is fabricated,which may inaugurate a new way for designing electrocatalysts by the utilization of solid waste.

关键词： Hydrogen evolution reaction Molybdenum carbide Non-metal doping Resource utilization Solid waste management

Single-atom catalyst application in distributed renewable energy conversion and storage

在线全文

学校读者我要写书评

暂无评论

SusMat 2023年第2期3卷 160-179页

作者： Xiao Li Wenxiu Xu yuhan Fang Riming Hu jiayuan yu Hong Liu Weijia Zhou Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJinanChina School of Biological Science and Technology University of JinanJinanChina Institute for Smart Materials&Engineering University of JinanJinanChina State Key Laboratory of Crystal Materials Shandong UniversityJinanChina

In recent years,owing to the depletion of fossil energy and the aggravation of environmental pollution,the conversion and storage of distributed renewable energy(such as solar energy,wind energy,and tidal energy)based on electrochemical technology have attracted extensive *** processes with high efficiency and high selectivity play a key role in clean energy conversion and *** the nearly 100%atomic utilization rate and unique catalytic activity,single-atom catalysts(SACs)have been rapidly developed and widely used in the field of energy conversion and *** this review,we first introduce the characteristics of ***,we focus on the application of SACs in energy conversion,including water electrolysis reaction,nitrogen reduction reaction,nitrate reduction reaction,oxygen reduction reaction,and carbon dioxide reduction *** terms of energy storage,we focus on supercapacitors and Li–S ***,we enumerate some of the methods for the synthesis of SACs in high metal loading or large ***,the main challenges and opportunities for this emerging field in the future are discussed and prospected.

关键词： electrocatalytic energy conversion energy storage single-atom catalysts