检索结果-南通市图书馆

Construction of porous disc-like lithium manganate for rapid and selective electrochemical lithium extraction from brine

引用

Chinese Journal of Chemical Engineering 2023年第2期54卷 316-322页

作者： Guolang Zhou Xiaowei Li Linlin Chen Guiling Luo Jun Gu Jie Zhu Jiangtao Yu jingzhou Yin Yanhong Chao Wenshuai Zhu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China College of Chemical Engineering and Environment State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing 102249China School of Pharmacy Jiangsu UniversityZhenjiang 212013China School of Chemistry and Chemical Engineering Huaiyin Normal UniversityHuai'an 223001China

In order to satisfy the growing global demand for lithium, selective extraction of lithium from brine has attracted extensive attention. LiMn_(2)O_(4)-based electrochemical lithium recovery system is one of the best choices for commercial applications because of its high selectivity and low energy ***, the low ion diffusion coefficient of lithium manganate limits the further development of electrochemical lithium recovery system. In this work, a novel porous disc-like LiMn_(2)O_(4) was successfully synthesized for the first time via two-step annealing manganese(Ⅱ) precursors. The as-prepared LiMn_(2)O_(4) exhibits porous disc-like morphology, excellent crystallinity, high Li^(+)diffusion coefficient(average 7.6×10^(-9)cm^(2)·s^(-1)), high cycle stability(after 30 uninterrupted extraction and release cycles, the crystal structure hardly changed) and superior rate capacity(93.5% retention from 10-120 mA·g^(-1)). The porous structure and disc-like morphology further promote the contact between lithium ions and electrode materials. Therefore, the assembled electrochemical lithium extraction device with LiMn_(2)O_(4) as positive electrode and silver as negative electrode can realize the rapid and selective extraction of lithium in simulated brine(adsorption capacity of lithium can reach 4.85 mg·g^(-1) in 1 h). The mechanism of disc-like LiMn_(2)O_(4) in electrochemical lithium extraction was proposed based on the analysis of electrochemical characterization and quasi in situ XRD. This novel structure may further promote the practical application of electrochemical lithium extraction from brine.

关键词： LiMn_(2)O_(4) Desalination Diffusion coefficient Electrochemistry Brine Selectivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Construction of truncated-octahedral LiMn2O4 for battery-like electrochemical lithium recovery from brine

引用

Green Energy & Environment 2023年第4期8卷 1081-1090页

作者： Guolang Zhou Linlin Chen Xiaowei Li Guiling Luo Zhendong Yu jingzhou Yin Lei Fan Yanhong Chao Lei Jiang Wenshuai Zhu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013JiangsuChina School of Pharmacy Jiangsu UniversityZhenjiang212013JiangsuChina School of Chemistry and Chemical Engineering Huaiyin Normal UniversityHuai'an223001JiangsuChina School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225002JiangsuChina Jiangsu Topfine New Materials Science&Technology Co. Ltd.Zhenjiang212013JiangsuChina

The extraction of lithium from salt lakes or seawater has attracted worldwide attention because of the explosive growth of global demand for lithium products. The LiMn_(2)O_(4)-based electrochemical lithium recovery system is one of the strongest candidates for commercial application due to its high inserted capacity and low energy consumption. However, the surface orientation of LiMn_(2)O_(4)that facilitates Li diffusion happens to be prone to manganese dissolution making it a great challenge to obtain high lithium inserted capacity and long life simultaneously. Herein, we address this problem by designing a truncated octahedral LiMn_(2)O_(4)(Tr-oh LMO) in which the dominant(111) facets minimize Mn dissolution while a small portion of(100) facets facilitate the Li diffusion. Thus, this Tr-oh LMO-based electrochemical lithium recovery system shows excellent Li recovery performance with high inserted capacity(20.25 mg g^(-1)per cycle) in simulated brine. In addition, the dissolution rate of manganese per 30 cycles is only 0.44% and the capacity maintained 85% of the initial after 30 cycles. These promising findings accelerate the practical application of LiMn_(2)O_(4)in electrochemical lithium recovery.

关键词： LiMn_(2)O_(4) Crystal facets Electrochemistry Lithium recovery Brine

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Passing Down Memories of the Central Axis of Beijing

引用

China Today 2023年第1期72卷 60-61页

作者： CAO jingzhou expert panel on Central Axis study at the Beijing Institute of Urban Development

The Central Axis of Beijing, running though the city, retains the memories of a generation.I was born and raised in Majuan Hutong, which lies to the northeast of the Forbidden City in Beijing. Across from my home’s courtyard was Caoduo Hutong. Walking west out of Caoduo Hutong, you can see the northeastern corner tower of the Forbidden City and its moat, with Jingshan Park opposite the moat.

关键词： Axis northeast Central

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CALCULATION FOR STANDARD ENTROPIES OF IONIC CRYSTAL HALIDES, ALKALI OXIDES AND SULFIDES

引用

Chinese Science Bulletin 1989年第10期34卷 876-877页

作者：余训民 jingzhou Education College Hubei

Since Latimer proposed that the standard entropies of solid compounds can be gained by the sum of each ionic entropy, many scholars have improved and spread. this method. But they are still limited by Latimer method. Since the properties of chemicals are not the same as properties of each ion to be plused together, this simple additive method is not satisfactory in its accuracy.

关键词： satisfactory entropy gained chemicals additive ionic deviation posed alkali spread

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Terahertz generation from Si3N4 covered photoconductive dipole antenna

引用

Chinese Optics Letters 2003年第5期1卷 308-310页

作者：施卫 jingzhou Xu X.-C. Zhang Department of Applied Physics Xi'an Universty of TechnologyXi'an 710048 Center for Terahertz Research Rensselaer Polytechnic Institute Troy NY 12180 USA

We observe enhanced terahertz (THz) radiation generated from a Si3N4 film-coated GaAs photoconductive dipole antenna. Compared to an uncoated antenna with identical electrode geometry and optical excitation power, the Si3N4 film-coated antenna has a higher effective DC resistance and larger breakdown voltage. As a result, the peak amplitude of generated THz radiation is significantly enhanced due to the Si3N4 film-coated layer.

关键词： PDA THz Terahertz generation from Si3N4 covered photoconductive dipole antenna from Si

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Differentiation and tumorigenicity of neural stem cells from human cord blood mesenchymal stem cells

引用

Neural Regeneration Research 2009年第10期4卷 769-774页

作者： Jing Xiang Changming Wang jingzhou Wang Department of Neurology Research Institute of Surgery Daping Hospital Third Military Medical University of Chinese PLA Chongqing 400042 China

BACKGROUND： Mesenchymal stem cells （MSCs） are capable of differentiating into a variety of tissues and exhibit low immunogenicity. OBJECTIVE： To investigate isolation and in vitro cultivation methods of human cord blood MSCs, to observe expression of neural stem cell （NSC） marker mRNA under induction, and to detect tumorigenicity in animals. DESIGN, TIME AND SETTING： A cell biological, in vitro trial and a randomized, controlled, in vivo experiment were performed at the Department of Neurology, Daping Hospital at the Third Military Medical University of Chinese PLA from August 2006 to May 2008. MATERIALS： Umbilical cord blood was collected from full-term-delivery fetus at the Department of Gynecology and Obstetrics of Daping Hospital, China. Eighteen BALB/C nu/nu nude mice were randomly assigned to three groups： back subcutaneous, cervical subcutaneous, and control, with 6 mice in each group. METHODS： Monocytes were isolated from heparinized human cord blood samples by density gradient centrifugation and then adherent cultivated in vitro to obtain MSC clones. After the cord blood MSCs were cultured for 7 days with nerve growth factor and retinoic acid to induce differentiation into NSCs, the cells （adjusted density of 1 × 10^7/mL） were prepared into cell suspension. In the back subcutaneous and cervical subcutaneous groups, nude mice were hypodermically injected with a 0.5-mL cell suspension into the back and cervical regions, respectively. In the control group, nude mice received a subcutaneous injection of 0.5 mL physiological saline into the back or cervical regions, respectively. MAIN OUTCOME MEASURES： Cellular morphology was observed by inverted microscopy, cultured cord blood MSCs were examined by flow cytometry, expression of nestin and musashi-1 mRNA was detected by reverse-transcriptase polymerase chain reaction prior to and after induction, and tumorigenicity following cord blood MSC transplantation was assayed by hematoxylin-eosin staining. RESULTS： Follo

关键词： cord blood mesenchymal stem cells neural stem cells induced differentiation nestin tumorigenicity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sonochemical effect of a bifrequency irradiation

引用

Chinese Science Bulletin 2000年第2期45卷 142-145页

作者： ZHU Changping, FENG Ruo & ZHAO Yiyun Department of Physics. jingzhou Normal College, jingzhou 434100, China State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China Chemistry Department of Yunnan University, Kunming 650091, Ch Department of Physics Jingzhou Normal College Jingzhou China State Key Laboratory of Modern Acoustics Nanjing University Nanjing China Chemistry Department of Yunnan University Kunming China

The sonochemical effect of a bifrequency orthogonal ultrasonic irradiation has been studied by using two different detecting methods. It has been shown that the sonochemical yield produced by the bifrequency irradiation appears to be much more than the sum of the yields produced separately by the two irradiations. The bifrequency irradiation, therefore, can be expected to exert a great influence on the development of sonohemical

关键词： bifrequency sonochemistry effect.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Seismic geomorphology and main controls of deep-water gravity flow sedimentary process on the slope of the northern South China Sea

引用

Science China Earth Sciences 2012年第10期55卷 747-757页

作者： LI Lei WANG YingMin XU Qiang ZHAO jingzhou LI Dong School of Petroleum Resources Xi'an Shiyou UniversityXi'an 710065China College of Geosciences China University of PetroleumBeijing 102249China CNOOC Research Institute Beijing 100027China

The Quaternary continental slope of the Baiyun Sag in northern South China Sea is characterized by a complex topography and abundant gravity flow ***-resolution 3-D seismic data in this area allow for a detailed study of the seismic geomorphology and deep-water gravity flow depositional *** Quaternary continental slope in the northern South China Sea is an above-graded *** intraslope basin lies within the above-grade continental ***,erosion,and deposition processes tend to develop a gentle topography and consequently a graded *** upper continental slope,which is above the slope equilibrium profile,is dominated by erosion and ***,slumps and erosional channels are developed within this continental *** intraslope basin is located below the slope equilibrium profile and is potential accommodation space where sediments transported by gravity flows could be deposited,forming lobe *** the influence of gravity flow supply,gravity flow duration,continental slope topography,equilibrium profile,and accommodation,a slump-erosional channel-lobe depositional system is developed in the Quaternary continental slope in the Baiyun *** deep-water gravity flow depositional process and the distribution of gravity flow sediments are greatly influenced by the continental slope topography,while the continental slope topography at the same time is reshaped by deep-water gravity flow depositional process and its *** study of the interplay between the continental slope and gravity flow is helpful in predicting the distribution of the deep-water gravity flow sediments and the variation of sediment quality.

关键词： seismic geomorphology deep water gravity flow sedimentary process South China Sea

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Differences between Marine and Terrestrial Shale Gas Accumulation:Taking Longmaxi Shale Sichuan Basin and Yanchang Shale Ordos Basin as Examples

引用

Acta Geologica Sinica(English Edition) 2015年第A01期89卷 200-206页

作者： PU Boling DONG Dazhong ZHAO jingzhou ER Chuang HUANG Jinliang School of Earth Sciences and Engineering Xi'an Shiyou University Xi'an Shaanxi 710065 China CNPC Research Institute of Petroleum Exploration & Development Beijing 100083 China

1 Introduction With the rapid development of theory and practice, shale gas has gradually become an important part in diversified energy structure. Though a lot of research have been done mainly for shale gas exploration prospects, geological conditions and shale gas accumulation have been analyzed and summarized, prospective resources have been preliminarily predicted, and favorable exploration and development zones have been proposed, shale gas exploration and development is still at the exploratory stage in China.

关键词： SHALE gas NATURAL gas -- Prospecting BASINS (Geology) GAS reservoirs PETROLEUM geology CHINA

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

J’ai grandi dans l’Axe central de Beijing

引用

今日中国（法文版） 2022年第8期60卷 30-31页

作者： CAO jingzhou Centre de recherche sur la culture de l’Axe central à l'Institut de recherche sur le développement urbain de Beijing

J’ai grandi à Beijing et j’ai vécu dans le lnitong(allée)de Majuan,à l’angle nord-est de la Cité interdite,et en face de la cour,il y avait le hutong de *** sortant à l’ouest,vous voyez la tour d'angle nord-... 详细信息

关键词： les angle Beijing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：