检索结果-南通市图书馆

ZnO/PANI nanoflake arrays sensor for ultra-low concentration and rapid detection of NO_(2)at room temperature

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2023年第2期42卷 536-544页

作者： Qiu-Yue Zheng Meng Yang Xin Dong Xian-Fa Zhang Xiao-Li Cheng Li-Hua Huo Zoltán Major ying-ming xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin150080China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Chemistryand State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-Senen UniversityGuangzhou510275China Institute of Polymer Product Engineering Johannes Kepler University Linz124040LinzAustria

With the development of environmental monitoring,it is urgent to establish NO_(2)sensor with good sensing *** with the traditional NO_(2)sensors made of metal oxides,NO_(2)sensors made of n-p heterostructure nanocomposites have good sensing performance in detection limit and operating *** nanoflake arrays with polyaniline film grown on the surface were prepared on ceramic tubes by hydrothermal and vapor diffusion *** gas-phase diffusion method can control the heterostructure by adjusting the diffusion *** room temperature(25℃),the construction of rich n-p heterogeneous interface enables the sensor prepared by the nanocomposite to respond to NO_(2),showing the sensing performance with the response value of 28.00 to10.00×10^(-6)NO_(2);the detection limit improved to0.01×10^(-6)and the recovery time of 18 *** this work,the sensing mechanism of NO_(2)at heterogeneous interface is analyzed,which provides a promising material for the detection of low concentration NO_(2)at room temperature.

关键词： ZnO/polyaniline(PANI)nanoflake arrays n-p heterostructure Ultra-low concentration NO_(2)gas sensor Rapid detection

Er_(2)O_(3) nanospheres with fast response to humidity for non-contact sensing

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2023年第1期42卷 56-63页

作者： Yi-Fan Jiang Chuan-Yu Guo Xian-Fa Zhang Xiao-Li Cheng Li-Hua Huo Ting-Ting Wang ying-ming xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin150080China

As a kind of lanthanide oxide functional material,Er_(2)O_(3) as aroused widespread scientific interest due to its exceptional properties;however,its humidity sensing performance remains to be ***,the rational designed Er_(2)O_(3) anospheres were prepared by one-step solvothermal and high-temperature calcined *** structure and morphology of the samples were analyzed by X-ray diffractometer(XRD),scanning electron microscope(SEM)and transmission electron microscope(TEM),and the effect of calcination temperatures on humidity sensing characteristics was also investigated.

关键词： method. spheres diffractometer

Recent advances of emerging tin disulfide for room temperature gas sensing

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2023年第12期42卷 3897-3913页

作者： Ting-Ting Wang Bao-Shuai Xing Chuan-Yu Guo Juan-Yuan Hao You Wang Li-Hua Huo Xiao-Li Cheng ying-ming xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of ChemistryChemical Engineering and MaterialsHeilongjiang UniversityHarbin 150080China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Effectively monitoring of hazardous gases has become increasingly important for ecological environment and human *** an emerging component of two-dimensional materials,layered metal dichalcogenides are gaining significant attention due to their unique physical and chemical properties,thus catering well to the gas sensing ***,tin disulfide(SnS_(2))has been widely examined recently owing to its low-cost,earth-abundant,and environmental friendliness features,which meet the requirements of advanced sensing ***,the booming research advancements of SnS_(2)-based gas sensors have been ***,the basic attributes of SnS_(2) and its ability to detect various hazardous gases are ***,innovative approaches that have demonstrated the effectiveness of improving the room temperature sensing performance of SnS_(2) are ***,the major challenges and future opportunities of SnS_(2) are also *** is ultimately expected that this timely review could offer guidance for designing high-performance gas sensing materials and further push forward their potential applications.

关键词： Gas sensors Tin disulfide Advanced approaches Room temperature sensing

Si/TiO2 carbon fiber core encapsulated in hierarchical multiple MXene@Co-MoS2 shells for constructing a free-standing anode of lithium storage

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第9期43卷 4222-4233页

作者： Xian-ping Du ying Huang Jia-ming Wang Zhen-he Feng xu Sun MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions School of Chemistry and Chemical Engineering Northwestern Polytechnical University Shanghai Institute of Space Power-Sources Ningbo Institute of Northwestern Polytechnical University

Silicon-based（Si-based） materials offer more possibilities for generating new portable electronic devices due to their high specific capacities. However, their inferior electrical conductivity and volume expansion during cycling seriously limit their development. The optimum solution is to select specific materials to establish an exceptionally conductive and volume buffer structure,which can assist Si materials in developing their excellent lithium storage properties. In this study, Si particles were confined in TiO2carbon fibers（TiO2CFs） via electrospinning, after which they were encapsulated with MXene and Co-MoS2（CMS） nanosheets to fabricate hierarchical ST-2@MXene@CMS films. TiO2CF, MXene and CMS were employed to establish a coherent conductive network with one-, two-and three-dimensional electronic pathways to permit the unimpeded flow of electrons inside the electrode material. TiO2CF, MXene and CMS acted precisely as multilayered buffers to ameliorate the volume change of Si particles during cycling. In addition, the CMS nanosheets were involved in lithium storage, contributing to the final electrochemical performance. Ultimately, the ST-2@MXene@CMS films served as free-standing electrodes, avoiding the impact of inactive interfaces on the electrochemical performance and fulfilling the lightweight requirement for new energy storage devices.

关键词： Co-MoS2 nanosheets Hierarchical structure Lithium-ion batteries MXene Si particles

Biohythane production from two-stage anaerobic digestion of food waste:A review

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第5期139卷 334-349页

作者： Xiaona An ying xu Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

The biotransformation of food waste(FW)to bioenergy has attracted considerable research attention as a means to address the energy crisis and waste disposal *** this end,a promising technique is two-stage anaerobic digestion(TSAD),in which the FW is transformed to biohythane,a gaseous mixture of biomethane and *** review summarises the main characteristics of FW and describes the basic principle of ***,the factors influencing the TSAD performance are identified,and an overview of the research status;economic aspects;and strategies such as pre-treatment,co-digestion,and regulation of microbial consortia to increase the biohythane yield from TSAD is ***,the challenges and future considerations associated with the treatment of FW by TSAD are *** paper can provide valuable reference for the improvement and widespread implementation of TSAD-based FW treatment.

关键词： Two-stage anaerobic digestion(TSAD) Food waste(FW) Methane production Hydrogen production

Heparin is an effective treatment for preventing liver failure after hepatectomy

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第22期30卷 2881-2892页

作者： Zhi-ying xu Min Peng ming-ming Fan Qi-Fei Zou Yi-Ran Li Dong Jiang Hepatic Surgery IV Shanghai Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai 200433China Ultrasound Diagnosis PLA Naval Medical CenterShanghai 200437China Department of Ultrasound Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai 200433China

BACKGROUND Posthepatectomy liver failure(PHLF)is one of the most important causes of death following liver ***,an established anticoagulant,can protect liver function through a number of mechanisms,and thus,prevent liver *** To look at the safety and efficacy of heparin in preventing hepatic dysfunction after *** The data was extracted from Multiparameter Intelligent Monitoring in Intensive Care III(MIMIC-III)v1.4 pinpointed patients who had undergone hepatectomy for liver cancer,subdividing them into two cohorts:Those who were injected with heparin and those who were *** statistical evaluations used were unpaired ttests,Mann-Whitney U tests,chi-square tests,and Fisher’s exact tests to assess the effect of heparin administration on PHLF,duration of intensive care unit(ICU)stay,need for mechanical ventilation,use of continuous renal replacement therapy(CRRT),incidence of hypoxemia,development of acute kidney injury,and ICU *** regression was utilized to analyze the factors related to PHLF,with propensity score matching(PSM)aiming to balance the preoperative disparities between the two *** In this study,1388 patients who underwent liver cancer hepatectomy were *** yielded 213 matched pairs from the heparin-treated and control *** univariate analyses indicated that heparin potentially reduces the risk of PHLF in both matched and unmatched *** analysis in the matched cohorts confirmed a significant association,with heparin reducing the risk of PHLF(odds ratio:0.518;95%confidence interval:0.295-0.910;P=0.022).Additionally,heparin treatment correlated with improved short-term postoperative outcomes such as reduced ICU stay durations,diminished requirements for respiratory support and CRRT,and lower incidences of hypoxemia and ICU *** Liver failure is an important hazard following hepatic *** ICU care heparin administration has been proved to decr

关键词： Liver resection Posthepatectomy liver failure Prophylactic treatment Heparin Prognosis of hepatectomy

Scattering for the Radial Schrodinger Equation with Combined Power-type and Choquard-type Nonlinearities

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

Acta Mathematica Sinica,English Series 2024年第4期40卷 1029-1041页

作者： ying WANG Cheng Bin xu The Graduate School of China Academy of Engineering Physics Beijing 100088P.R.China School of Mathematics and Statistics Qinghai Normal UniversityXining 810008P.R.China

In this paper,we show the scattering of the radial solution for the nonlinear Schrodinger equation with combined power-type and Choquard-type nonlinearities iut+△u=λ1|u|p1-1u+λ2(Iα*|u|^(p2))|u|p^(2-2)*** the energy space H^(1)(R^(N))forλ_(1)λ_(2)=-*** establish a scattering criterion for radial solution together with Morawetz estimate which implies the scattering *** show that the defocusing perturbation terms does not determine the scattering solution in energy space.

关键词： Schrodinger equation Choquard-type Scattering theory

Prospects for green steelmaking technology with low carbon emissions in China

在线全文

学校读者我要写书评

暂无评论

Carbon Energy 2024年第2期6卷 1-24页

作者： Zhang Fucheng Hong Lukuo xu ying College of Metallurgy and Energy North China University of Science and TechnologyTangshanHebeiChina Hebei Iron and Steel Laboratory TangshanHebeiChina

The steel industry is a major source of CO_(2) emissions,and thus,the mitigation of carbon emissions is the most pressing challenge in this *** this paper,international environmental governance in the steel industry is reviewed,and the current state of development of low-carbon technologies is ***,low-carbon pathways for the steel industry at the current time are proposed,emphasizing prevention and treatment ***,the prospects of low-carbon technologies are explored from the perspective of transitioning the energy structure to a“carbon-electricity-hydrogen”***,steel enterprises should adopt hydrogen-rich metallurgical technologies that are compatible with current needs and process flows in the short term,based on the carbon substitution with hydrogen(prevention)and the CCU(CO_(2) capture and utilization)concepts(treatment).Additionally,the capture and utilization of CO_(2) for steelmaking,which can assist in achieving short-term emission reduction targets but is not a long-term solution,is *** conclusion,in the long term,the carbon metallurgical process should be gradually supplanted by a hydrogen-electric synergistic approach,thus transforming the energy structure of existing steelmaking processes and attaining near-zero carbon emission steelmaking technology.

关键词： carbon capture and utilization carbon emission hydrogen metallurgy low-carbon technology steel industry

Progress and prospect of Pt-based catalysts for electrocatalytic hydrogen oxidation reactions

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

Nano Research 2024年第3期17卷 960-981页

作者： xu Zhang ying Xie Lei Wang Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China

To achieve the goals of the peak carbon dioxide emissions and carbon neutral,the development and utilization of sustainable clean energy are extremely *** fuel cells are an important system for converting hydrogen energy into electrical ***,the slow hydrogen oxidation reaction(HOR)kinetics under alkaline conditions has limited its ***,elucidating the catalytic mechanism of HOR in acidic and alkaline media is of great significance for the construction of highly active and stable *** terms of practicality,Pt is still the primary choice for commercialization of fuel *** the above basis,we first introduced the hydrogen binding energy theory and bifunctional theory used to describe the HOR activity,as well as the pH *** that,the rational design strategies of Pt-based HOR catalysts were systematically classified and summarized from the perspective of activity *** addition,we further emphasized the importance of theoretical simulations and in situ characterization in revealing the HOR mechanism,which is crucial for the rational design of ***,the practical application of Pt-based HOR catalysts in fuel cells was also *** closing,the current challenges and future development directions of HOR catalysts were *** review will provide a deep understanding for exploring the mechanism of highly efficient HOR catalysts and the development of fuel cells.

关键词： Pt-based catalysts hydrogen oxidation reaction(HOR) electrocatalytic mechanism hydrogen binding energy theory bifunctional theory