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Science China Materials 2022年第10期65卷 2786-2792页

作者： Lian Xiao quanchao du Yi Huang Shijia Cheng Shuai Yin Teck Neng Wong Edwin Kok Lee Yeow Handong Sun Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Division of Chemistry and Biological Chemistry School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Research Institute of Aero-Engine Beihang UniversityBeijing 100083China School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore MajuLab International Joint Research Unit UMI 3654CNRSUniversitéCôte d’AzurSorbonne UniversitéNational University of SingaporeNanyang Technological UniversitySingapore 637371Singapore

Bright tunable light emission in the short wavelength range from sulfur nanodots was demonstrated with a photoluminescence quantum yield(PLQY)of up to 59.4%.A fission-aggregation mechanism was proposed for the formation of sulfur nanodots with desired *** synthetic strategy allowed for simultaneous size control from 3.2 to 5.6 nm,thus tuning the emission color from ultraviolet(UV)to deep blue(342±430 nm),and for the suppression of unwanted nonradiative recombination centers and deep level *** luminescence mechanism and quantum confinement effect of the synthesized sulfur nanodots were investigated by optical spectroscopy and theoretical *** results show promise toward the application of sulfur nanodots in UV optoelectronics,biomedical treatments,and sterilization.

关键词： sulfur nanodots ultraviolet deep blue tunable photoluminescence heavy metal free high PLQY

硫掺杂氮化碳的制备及光催化降解罗丹明B的研究

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化工新型材料 2020年第4期48卷 208-211页

作者：邵先钊杜全超刘智峰陕西省催化基础与应用重点实验室陕西理工大学汉中723001

以SiO2微球为硬模板,3-氨基-5-巯基-1,2,4-三氮唑为前驱体,经高温炭化后除去硬模板得到硫掺杂的氮化碳材料。通过扫描电镜(SEM)、物理吸附仪(BET)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和紫外-可见光谱仪(UV-Vis)等研究手段对制... 详细信息

以SiO2微球为硬模板,3-氨基-5-巯基-1,2,4-三氮唑为前驱体,经高温炭化后除去硬模板得到硫掺杂的氮化碳材料。通过扫描电镜(SEM)、物理吸附仪(BET)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和紫外-可见光谱仪(UV-Vis)等研究手段对制备的材料进行表征分析。将硫掺杂氮化碳材料应用于可见光催化降解有机污染物罗丹明B,通过改变不同条件研究其光催化活性。结果表明:掺杂后的禁带宽度减小是光催化性能提高的主要原因。

关键词：氮化碳硫掺杂光催化罗丹明B

纳米核壳型Ag@Fe_(3)O_(4)复合材料的制备、催化及抑菌性能

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复合材料学报 2021年第3期38卷 816-823页

作者：郭少波梁艳莉季晓晖兰阿峰黄佩杜全超马剑琪陕西理工大学化学与环境科学学院汉中723000 陕西理工大学生物科学与工程学院汉中723000

采用"一锅法"制备纳米核-壳结构的Ag@Fe_(3)O_(4)复合材料。利用TEM、XRD、UV-vis DRS、振动探针式磁强计(VSM)对Ag@Fe_(3)O_(4)复合材料进行表征。以甲基橙为目标污染物,研究Ag@Fe_(3)O_(4)复合材料在过量NaBH4介质中加氢还原的催化活... 详细信息

采用"一锅法"制备纳米核-壳结构的Ag@Fe_(3)O_(4)复合材料。利用TEM、XRD、UV-vis DRS、振动探针式磁强计(VSM)对Ag@Fe_(3)O_(4)复合材料进行表征。以甲基橙为目标污染物,研究Ag@Fe_(3)O_(4)复合材料在过量NaBH4介质中加氢还原的催化活性,并探讨其催化机制;以单质Ag和Fe_(3)O_(4)作参比,研究Ag@Fe_(3)O_(4)复合材料对金黄色葡萄球菌和大肠杆菌的抑菌性能。结果表明,在10 min内,Ag@Fe_(3)O_(4)复合材料对甲基橙的加氢还原催化率为98%以上,且活性Ag转移电子至甲基橙的N=N键,使其断裂还原成对氨基苯磺酸钠和对二氨基苯;抑菌实验表明,Ag@Fe_(3)O_(4)复合材料比单质Ag具有更强的抑菌活性,并对细胞壁中含有更薄的磷脂双分子层的大肠杆菌更为敏感。

关键词：复合材料 Ag 催化抑菌核壳型 Fe_(3)O_(4)

A granular adsorbent-supported Fe/Ni nanoparticles activating persulfate system for simultaneous adsorption and degradation of ciprofloxacin

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Chinese Journal of Chemical Engineering 2020年第4期28卷 1077-1084页

作者： Jiwei Liu Yufeng du Wuyang Sun quanchao Chang Changsheng Peng Key Lab of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China School of Environment Tsinghua UniversityBeijing 100084China School of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526061China

In this work,Fe/Ni nanoparticles were produced through Fe(II)and Ni(II)reduction by NaBH4 and they were stabilized by a kind of prepared granular adsorbent(Fe/Ni@PGA).Fe/Ni@PGA as an environment-friendly activator was used to activate persulfate(PS)for the removal of ciprofloxacin from aqueous ***/Ni@PGA was systematically characterized via Brunauer-Emmett-Teller(BET)method,X-ray diffraction(XRD),scanning electron microscopy(SEM),and Fourier transform infrared spectroscopy(FTIR).The effects of PS concentration,initial solution pH,Fe/Ni@PGA dosage,initial ciprofloxacin concentration,reaction temperature,anions,and natural organic matters on the removal of ciprofloxacin by Fe/Ni@PGA/PS were *** removal efficiency of ciprofloxacin by Fe/Ni@PGA/PS was 93.24%under an initial pH of 3.0,PS concentration of 10 mM,Fe/Ni@PGA dosage of 0.1 g,and reaction temperature of 30℃.Fe/Ni@PGA could still exhibit high catalytic activity after nine cycles of *** removal mechanisms for ciprofloxacin by the Fe/Ni@PGA/PS system were *** summary,the Fe/Ni@PGA/PS system could be applied as a promising technology for ciprofloxacin removal.

关键词： Fe/Ni@PGA Ciprofloxacin Persulfate Sulfate radical Oxidation Adsorption

化学专业研究生结构表征方法与技术课程思政建设探索

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云南化工 2024年第11期51卷 193-196页

作者：吴睿胡青杜全超刘存芳季晓晖陕西理工大学化学与环境科学学院陕西省催化基础与应用重点实验室陕西汉中723001 陕西省汉中中学陕西汉中723001

结构表征方法与技术是化学及相关专业硕士研究生的一门专业必修课,课程应用广,实践性强,是研究生开展科学研究的基础。将思政元素融入结构表征方法与技术教学,旨在培养学生科学思维,培养学生学科素养和思想道德修养。对研究生结构表征... 详细信息

结构表征方法与技术是化学及相关专业硕士研究生的一门专业必修课,课程应用广,实践性强,是研究生开展科学研究的基础。将思政元素融入结构表征方法与技术教学,旨在培养学生科学思维,培养学生学科素养和思想道德修养。对研究生结构表征方法与技术课程进行简介,分析结构表征方法与技术思政教学过程中存在的问题,并重点探究结构表征方法与技术融入课程思政元素的策略和途径。以课程思政教师队伍建设为基要,分别探讨在教学大纲、教学内容和教学目标,教学模式,教学评价,科研实验中融入思政元素。

关键词：结构表征方法与技术课程思政研究生融入

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金核壳结构复合纳米颗粒在生物医学中的应用

贵金属 2018年第2期39卷 69-75页

作者：吴睿张强郝亮刘存芳吴迎春夏冬辉任传青杜全超田光辉陕西理工大学化学与环境科学学院陕西省催化基础与应用重点实验室陕西汉中723000

核壳结构纳米材料是一种新型复合材料。贵金属金纳米核壳材料同时具有核和壳的性质,以及独特的光学、电学、催化性能和良好的生物相容性,因此在生物、化学、医学等领域具有巨大的应用价值。基于文献分析,综述了金及其核壳结构纳米复合... 详细信息

核壳结构纳米材料是一种新型复合材料。贵金属金纳米核壳材料同时具有核和壳的性质,以及独特的光学、电学、催化性能和良好的生物相容性,因此在生物、化学、医学等领域具有巨大的应用价值。基于文献分析,综述了金及其核壳结构纳米复合颗粒在生物及医学上的应用,包括蛋白质、DNA、细菌和病毒的检测,以及肿瘤热疗、生物成像、生物传感、药物传递与释放等。并对完善制备技术以便更好地应用于临床进行了展望。

关键词：金核壳结构纳米颗粒生物医学应用

H_∞ fault estimation for a class of linear time-delay systems in finite frequency domain

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Journal of Systems Engineering and Electronics 2010年第5期21卷 835-841页

作者： quanchao Dong Maiying Zhong Steven X. Ding School of Control Science and Engineering Shandong University Jinan 250061 E R. China School of Instrumentation Science and Opto-electronics Engineering Beihang University Beijing 100191 P. R. China Institute for Automatic Control and Complex Systems University of Duisburg-Essen Duisburg 47057 Germany

This paper deals with the problem of H∞ fault estimation for linear time-delay systems in finite frequency *** a generalized coordinate change is applied to the original system such that in the new coordinates all the time-delay terms are injected by the system＇s input and *** an observer-based H∞ fault estimator with input and output injections is proposed for fault estimation with known frequency *** the aid of Generalized Kalman-Yakubovich-Popov lemma,sufficient conditions on the existence of the H∞ fault estimator are derived and a solution to the observer gain matrices is obtained by solving a set of linear matrix ***,a numerical example is given to illustrate the effectiveness of the proposed method.

关键词： fault estimation time-delay generalized coordinate change generalized Kalman-Yakubovich-Popov lemma finite frequency domain.

Genetic diversity and population structure of the sea star Asterias amurensis in the northern coast of China

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Journal of Oceanology and Limnology 2023年第4期41卷 1593-1601页

作者： quanchao WANG Ying LIU Zirui PENG Linlin CHEN Baoquan LI Key Laboratory of Coastal Biology and Bioresource Utilization Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Ocean School Yantai UniversityYantai 264005China

The sea star Asterias amurensis is widely viewed as a severe“marine pest”because of its broad feeding *** the past few decades,*** undergoes massive and sporadic population outbreaks worldwide,causing extensive economic and ecological losses to the local aquaculture industry and marine *** the genetic diversity and population structure of *** can provide vital information for resource *** analyzing the polymorphism of the mitochondrial cytochrome C oxidase subunit I(COI)gene and ten simple sequence repeat(SSR)microsatellites markers,the genetic diversity and population structure of *** of four populations along the northern coast of China was uncovered.A total of 36 haplotypes were identified,and a main haplotype was found in four *** Qingdao(QD)population displayed the highest genetic diversity among all the *** AMOVA and pairwise F_(st)showed that there was small but statistically significant population differentiation among the four populations,especially between QD and Weihai(WH).Moreover,the principal component analysis(PCA)and admixture analysis showed that several individuals in Yantai(YT)and Dalian(DL)had little genetic association with other ***,this study provided useful information of the genetic diversity and population structure of *** and will contribute to the resource management of *** in China.

关键词： Asterias amurensis cytochrome C oxidase subunit I(COI) simple sequence repeat(SSR) population structure China seas

Geochemical characteristics and geological implication of ferromanganese crust from CM6 Seamount of the Caroline Ridge in the Western Pacific

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Journal of Oceanology and Limnology 2021年第5期39卷 1605-1621页

作者： Qing WANG Zhenyan WANG Kai LIU quanchao CUI Xingyu SHI CAS Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Ferromanganese crusts(Fe-Mn crusts)grow very slow and can be treated as condensed stratigraphic sections recording paleo-oceanographic environmental information and local key geological events during the mineralization ***,textures,mineralogy,and geochemistry of a Fe-Mn crust sample from the CM6 Seamount of the Caroline Ridge in the Western Pacific Ocean were analyzed by means of electron probe microanalysis and X-ray *** Fe-Mn crust shows three layers in textural characteristics from bottom to *** lower,middle,and upper layers presence mottled,botryoidal,and columnar textures,*** vernadite,Fe hydroxide,amorphous silicate minerals,calcite,quartz,and feldspar are the main minerals of the Fe-Mn *** cobalt chronometry method,the cumulative growth time of the Fe-Mn crust was determined to be 11 Ma or 25 Ma,of which25 Ma is inconsistent with other lines of age constraint brought by dating of the *** co-existence of abundant silicate minerals and bioclasts in the middle and lower layers of the Fe-Mn crust diluted the ferromanganese oxide deposits,thus affected the texture,minerals,and geochemical characteristics of the Fe-Mn *** in Mn Co,Ni,and other elements content and the burial of opal-A recorded the expansion of oxygen minimum zone(OMZ)in the upper layer of the Fe-Mn *** addition,the highreflectivity Fe-rich laminae might indicate the surrounding volcanic *** Fe-Mn crust sample was determined to be hydrogenic by electron probe micro-analyzer(EPM A).The findings help us understand the geochemical characteristics of the Fe-Mn crust in the Caroline Ridge Seamount in the Western Pacific and the variations of paleo-oceanographic environment clues borne by the Fe-Mn crusts.

关键词： ferromanganese crust geochemistry geological significance environment influence seamount

Nutrients of green and senesced leaves of a Robinia pseudoacacia plantation along a latitudinal gradient on the Loess Plateau,China

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Journal of Forestry Research 2021年第6期32卷 2499-2506页

作者： quanchao Zeng Yang Liu Jiajia Yang Yanan Chen Lusha Ma Shaoshan An College of Resources and Environment Huazhong Agricultural UniversityWuhan430070People’s Republic of China State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau Northwest A&F UniversityYangling712100ShaanxiPeople’s Republic of China

Plantations have been widely established to improve ecosystem services and *** locust,Robinia pseudoacacia *** a common,widely planted species to control soil erosion on the Loess *** studies have focused on economic values but the interactions between soil and plant carbon(C),nitrogen(N)and phosphorus(P)remain *** variations of soil,green and senesced leaf C,N and P levels in *** along a latitudinal gradient is useful to understanding its ecological *** results show that soil C,N and senesced leaf N and P significantly decreased with an increase in latitude,but there were no significant changes in the senesced leaf C and soil *** resorption efficiency of N was related with latitude and soil N levels,and the relation between green leaf N and soil N was *** relations suggest that soil N was the key in affecting green leaf N *** higher latitudes,senesced leaves had lower N levels associated with higher N resorption efficiency to maintain a stable N content in green *** a decrease of soil N,*** can enhance N resorption efficiency to meet the demand of ***,it is an important species for reforestation,especially in nutrient-poor environments.

关键词： Green leaves Senesced leaves Resorption efficiency Robinia pseudoacacia Loess plateau Vegetation restoration