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Chinese Journal of Chemistry 2024年第14期42卷 1599-1605页

作者： Kairui Liu Chunhang Zhao Liji Gu Xiang Li Jiali Yan Siqi Lao weiwei huan Yan Zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials and Drug Discovery&Innovation CenterCollege of Chemistry and Materials ScienceZhejiang Normal UniversityJinhuaZhejiang321004 China Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass College of Chemistry and Materials EngineeringZhejiang A&F UniversityHangzhouZhejiang311300 China

Functionalized free radical addition/cyclization reactions represent an efficient way for introducing new functionality or coupling fragments to *** are good regional selectivity radical acceptors in organic synthesis,and many of bio-relevant cyclic compounds could be easily obtained by direct radical cyclization ***,we report a photocatalytic cascade radical addition of biaryl ynones,for the divergent synthesis of privileged carbon ***,further transformation of the multi-functional group product into a variety of other derivatives demonstrates the synthetic value of this developed method.

关键词： Ynones Photocatalysis Cascade cyclization Alkoxycarbonyl radical Dearomatization Biaryls Regioselectivity Radical reactions

Imide-based covalent organic framework with excellent cyclability as an anode material for lithium-ion battery

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Chinese Chemical Letters 2024年第6期35卷 206-210页

作者： Yue Qian Zhoujia Liu Haixin Song Ruize Yin Hanni Yang Siyang Li weiwei Xiong Saisai Yuan Junhao Zhang huan Pang School of Environmental&Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Chemistry&Chemical Engineering Yangzhou UniversityYangzhou 225009China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China

Covalent organic frameworks(COFs)exhibiting reversible redox behaviors have been identified as promising candidates for constructing electrode materials in lithium-ion batteries(LIBs).However,their extensive application has been limited due to finite redox sites and poor structural *** this study,we design and synthesize a novel polyimide covalent organic framework(PI-COF)using the traditional solvothermal method and successfully apply it as an anode material for *** large conjugated structure of PI-COF accelerates charge transfer,while its large surface area provides more active sites,making PI-COF an attractive anode material for ***,the PI-COF anode material demonstrates high reversible specific capacity and excellent long-term cycling stability due to its COF ***,the PI-COF electrodes deliver a specific capacity of 800 m Ah/g at a current density of 200 m A/g after 200 cycles,while a specific capacity of 450 m Ah/g at a current density of 1000 m A/g is sustained after 800 *** outstanding lithium storage capacity,particularly the satisfactory long-term cycling stability,establishes PI-COF as a promising material for LIBs.

关键词： Ethylenediaminetetraacetic dianhydride Covalent organic frameworks Polyimide Lithium-ion battery Anode material

Degradation of 2,4-DCP by the Immobilized Laccase on the Carrier of Fe304@SiO2-NH2

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Chinese Journal of Chemistry 2012年第12期30卷 2849-2860页

作者： huan weiwei Yang Yuxiang Wu Bin Yuan Hongming Zhang Yani Liu Xiangnong School of Chemistry and Molecular Engineering East China University of Science & Technology Shanghai 200237 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun Jilin 130012 China Analysis Test Center Yangzhou University Yangzhou Jiangsu 225009 China

In this paper, the laccase immobilized on Fe304@SiO2-NH2 nanoparticles was successfully prepared by the glutaraldehyde cross-linking method. The degradations of 2,4-diehlorophenol （2,4-DCP） catalyzed by laccase and immobilized laccase were carried out. The optimal conditions regarding degradation efficiency were also discussed, which include reaction time, pH value, temperature, concentration of 2,4-DCP and laccase. When laccase was immobilized on Fe304@SiO2-NH2 carrier by crosslinking with glutaraldehyde, the stability and repetition were im- proved significantly. The removal efficiency of 2,4-DCP by immobilized laccase still remained over 59% after six cycles of operation. Degradation of 2,4-DCP is a first-order reaction and the activation energies of 2,4-DCP catalyzed by laccase and immobilized laccase are 51.93 kJ·mol-1 strate the immobilized laccase had a faster degradation Fe304@MSS-NH2 can promote the degradation reaction. and 44.12 kJ·mol-1, respectively. The results demonrate than the free laccase; the magnetic carrier

关键词： Fe3O4@SiO2-NH2 nanoparticles immobilized laccase degradation rate repetition magneto-inducedeffect

矿物钾肥在中国典型植烟土壤中钾素转化特性及对烟叶提钾效果的初步评估

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中国农学通报 2024年第21期40卷 84-90页

作者：李冬雪刘新源宋正熊李豪豪赵世民王一柳郇威威王火焰卢殿君陈小琴王玉洁中国科学院南京土壤研究所土壤与可持续农业国家重点实验室南京210008 中国科学院大学北京100049 河南省烟草公司三门峡分公司河南三门峡472000 河南省烟草公司洛阳分公司河南洛阳471023

本研究旨在探究不同形态钾肥对提高烟田土壤质量和生产力的影响。通过室内培养试验和田间试验,评估了施用不同钾肥后土壤中钾素的生物有效性。在室内培养试验中,分析了3种钾肥处理后土壤中非交换性钾(NEK)、交换性钾(EK)和水溶性钾(WSK... 详细信息

本研究旨在探究不同形态钾肥对提高烟田土壤质量和生产力的影响。通过室内培养试验和田间试验,评估了施用不同钾肥后土壤中钾素的生物有效性。在室内培养试验中,分析了3种钾肥处理后土壤中非交换性钾(NEK)、交换性钾(EK)和水溶性钾(WSK)的含量变化。结果显示,这三种钾素形态分别占17.7%~83.9%、11.1%~56.0%和2.3%~36.3%。在不同地区(西南、黄淮和东北)的实验中,施用硅基钾肥显著提高了EK和NEK含量,提升幅度分别为26.3%和18.1%、30.8%和24.5%、36.3%和42.7%。利用灰色关联分析发现,土壤全钾含量、质地和矿物组成是影响NaBPh4提钾量的主要影响因子。在田间试验中,与不施钾处理相比,部分用硅基钾肥替代硫酸钾能显著提高烟草产量(增加8.7%)和钾含量(增加66.6%),同时降低烟田土壤速效钾残留量。综上所述,硅基钾肥可有效维持甚至提升土壤钾素供应能力,其部分替代传统钾肥可显著提升烟草产质量。针对硅基钾肥替代传统钾肥的最佳比例,值得进一步研究探讨。

关键词：土壤钾素交换性钾非交换性钾硅基钾肥四苯硼钠生物有效性烟草产量土壤质量烟草

Effect of megapore particles packing on dielectric barrier discharge,O_(3) generation and benzene degradation

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Plasma Science and Technology 2022年第1期24卷 86-94页

作者：商克峰曹无敌郇伟伟姜楠鲁娜李杰 School of Electrical Engineering Dalian University of TechnologyDalian 116024People's Republic of China School of Environmental Science and Technology Dalian University of TechnologyDalian 116024People’s Republic of China

Recently,packed-bed discharge plasma technologies have been widely studied for treatment of volatile organic compounds(VOCs),due to the good performance in improving the degradation and mineralization of *** this paper,a coaxial cylindrical dielectric barrier discharge reactor packed with porous material of micron-sized pores was used for degradation of benzene,and the discharge characteristics and ozone generation characteristics were *** the discharge length was 12 cm and the filling length was 5 cm,the packed particles in the discharge area significantly increased the number of micro-discharges,and the current amplitude and density increased with the pore size of packed particles,but the discharge power and ozone concentration showed a trend of first increasing and then *** discharge power and ozone production reached the maximum when the size of pore former was 75μm,correspondingly,the degradation efficiency of benzene was the highest.

关键词： plasma packed bed dielectric barrier discharge micro-discharge ozone generation benzene degradation

Influences of SiO₂/Na₂O Molar Ratio on Aging and Chemical Modification of Water Glass

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Open Journal of Inorganic Chemistry 2016年第2期6卷 125-134页

作者： huan Yang Hailan Xu J. Kriss Frank Guangtong Xu weiwei huan Chaoying Ni Yuxiang Yang School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai 200237 China Department of Materials Science and Engineering University of Delaware Newark DE 19716 USA State Key Laboratory of Catalytic Materials and Reaction Engineering (RIPP SINOPEC) Beijing 100083 China Key Laboratory of Chemical Utilization of Forestry Biomass of Zhejiang Province Zhejiang Agricultural & Forestry University Lin’an 311300 China

In this paper, the content of water glass before and after adding modifying agent was measured by Trimethylsilyl-gas-chromatography. The experimental results showed that different modulus of water glass could generate different content of mono-silicate acid and oligomeric silicate acid in water glass. After a period of storage, different modulus of water glass led to decrease of silicate content at different levels. Because higher content of Na2O in water glass tended to incur the alkaline polymerization, the occurrence of depolymerization of silicate species would lead to an increase of oligomeric silicate species, resulting in a drawback of silicate species content after a period of storage. And contrary to that, lower content of Na2O in water glass tended to incur the acidic polymerization. When the modifying agent was added to the newly made water glass, the amount of mono-silicate acid and oligomeric silicate acid also decreased. In modified water glass, the change of each silicate acid species was less than that in unmodified water glass. These results showed that the modifying agent retarded the aging of water glass. It had remarkable significance on the theory and practical application of water glass chemistry.

关键词： Water Glass Modulus Polymerization Mechanism Chemical Modification TMS-GC Method

二氧化铈促进钴氧化物表面氧化一氧化碳的原位表征研究（英文）

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Chinese Journal of Catalysis 2019年第5期40卷 656-663页

作者：郇伟伟李洁嵇家辉邢明阳浙江农林大学浙江省林业与生物质化学利用重点实验室浙江临安311300 华东理工大学化学与分子工程学院教育部结构可控先进材料重点实验室上海200237 浙江省农业生物资源生化制造协同创新中心浙江杭州310023

CO氧化由其广泛的应用而成为催化领域中研究的重要反应,Co_3O_4催化剂具有价格低廉、催化活性高等优点而引起研究者的关注,其中,催化剂的结构、表面特性及反应机理等是研究的重点.催化剂的原位研究对观察相变过程,理解相应的表面化学反... 详细信息

CO氧化由其广泛的应用而成为催化领域中研究的重要反应,Co_3O_4催化剂具有价格低廉、催化活性高等优点而引起研究者的关注,其中,催化剂的结构、表面特性及反应机理等是研究的重点.催化剂的原位研究对观察相变过程,理解相应的表面化学反应和反应机理起着重要的作用.本文采用煅烧法制备了Ce O_2掺杂的Co_3O_4,并对其催化CO氧化反应性能进行了研究.通过扫描电镜、高分辨率透射电镜、拉曼光谱和X射线光电子能谱对催化剂的微观结构和形态进行了表征.通过原位X射线衍射(原位XRD)和原位漫反射红外傅立叶变换光谱(原位DRIFTS)表征了Ce O_2掺杂Co_3O_4对CO氧化的效果.原位XRD测试是在氢气气氛中进行,借以评估催化剂的氧化还原特性.结果表明,由于Ce O_2的补氧能力,CeO_2掺杂可以提高Co^(2+)的还原能力,并促进了Co^(3+)-Co^(2+)-Co^(3+)循环.采用原位DRIFTS对CeO_2改性的Co_3O_4表面吸附的碳酸盐物种进行了探究.结果表明,吸附碳酸盐物种的CeO_2掺杂Co_3O_4催化剂的红外峰与纯Co_3O_4相比有所不同.CeO_2掺杂的Co_3O_4上吸附的碳酸盐物种较为活泼,其与催化剂表面的结合作用力比较弱,不会覆盖催化剂表面的活性位点,能有效抑制催化剂的失活.本文揭示了CeO_2掺杂Co_3O_4促进CO氧化的机理,为设计高效氧化CO的催化剂提供了理论支持.原位XRD的结果表明,由于CeO_2的补氧能力,引入CeO_2可以显著提高Co^(2+)的稳定性.换句话说,它可以通过降低Co^(2+)的氧化能力来提高Co^(2+)的还原能力,有利于促进Co^(3+)-Co^(2+)-Co^(3+)循环的稳定性,从而使Co^(2+)更容易转化为Co^(3+).原位DRIFTS表明,在某种程度上,吸附在CeO_2-Co_3O_4表面的碳酸盐物种呈游离态,与催化剂表面的结合作用力较弱.这种类型的碳酸盐更活泼,而且不会像那些强作用在催化剂表面的碳酸盐物种那样使表面钝化.CeO_2-Co_3O_4与Co_3O_4的表面吸附的碳酸盐物种的差异是由于引入的CeO_2对氧化钴表面进行修饰改性的结果.在高温和N_2气氛下进行预处理后,CeO_2表面变得光洁且形成了一些氧空位,其特殊的储氧能力通过弱吸附氧使其表面更加活泼.这些结果证实,经过CeO_2的修饰后,氧化钴表面更加活泼,且更适合CO氧化反应的发生.

关键词：氧化铈-氧化钴一氧化碳氧化原位X射线衍射原位漫反射红外傅里叶变换光谱学碳酸盐物种

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蓝莓无糖组培关键技术因素研究

中国果树 2023年第5期 50-55页

作者：陈相涛陈芳芳王方郇伟伟李洁李小白杭州木木生物科技有限公司浙江311300 杭州市临安区农业农村局浙江农林大学化学与材料工程学院浙江省农业科学院

为研究蓝莓无糖组培技术在种苗生产中的关键技术因素,以绿宝石品种的常规组培苗为试验对象,研究不同植物生长调节剂及浓度、固体基质和营养液比例(固液比)及抑菌剂对蓝莓组培苗生根和污染的情况,以期为今后蓝莓无糖组培方案的进一步优... 详细信息

为研究蓝莓无糖组培技术在种苗生产中的关键技术因素,以绿宝石品种的常规组培苗为试验对象,研究不同植物生长调节剂及浓度、固体基质和营养液比例(固液比)及抑菌剂对蓝莓组培苗生根和污染的情况,以期为今后蓝莓无糖组培方案的进一步优化以及蓝莓产业优质种苗生产提供科学依据。结果表明:改良WPM培养基添加1.0 mg/L IBA或1.0 mg/L NAA的营养液配方对蓝莓苗生根效果较好;1.80 L固体基质(蛭石)与1.25 L营养液的比例最佳,二者都能够很好地促进蓝莓苗的生根及增加根系数量和长度;植培净的抑菌效果最好,能够有效降低污染率至13.65%。

关键词：蓝莓无糖组培植物生长调节剂固液比抑菌剂

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蛋白质3D食品打印研究进展

保鲜与加工 2023年第12期23卷 65-80页

作者：李京蓉郇伟伟宋丽丽浙江农林大学省部共建亚热带森林培育国家重点实验室浙江杭州311300 浙江农林大学浙江省林业生物质化学利用重点实验室浙江杭州311300

综述了3D食品打印(Three-dimensional food printing,3D-FP)的应用及发展,从不同角度探讨了用于3D-FP的蛋白质凝胶形成原理及影响要素,进而总结了蛋白质打印油墨组分间的相互作用以及其对蛋白质凝胶理化特性、打印特性的影响,以期为深... 详细信息

综述了3D食品打印(Three-dimensional food printing,3D-FP)的应用及发展,从不同角度探讨了用于3D-FP的蛋白质凝胶形成原理及影响要素,进而总结了蛋白质打印油墨组分间的相互作用以及其对蛋白质凝胶理化特性、打印特性的影响,以期为深入应用凝胶品质调控、创新开发新型蛋白质3D-FP产品提供理论依据。

关键词：蛋白质 3D食品打印食品加工食品感官食品组分

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缬氨酸锑和缬氨酸铋配合物的制备与结构分析

同济大学学报（自然科学版） 2011年第3期39卷 451-455页

作者：杨宇翔郇伟伟纪国媛陈娅如华东理工大学化学与分子工程学院上海200237

采用室温固相合成法合成了缬氨酸与三氯化锑、三氯化铋的两种生物配合物,其组成为Sb(C5H10O2N)3.2H2O,Bi(C5H10O2N)2Cl.0.5H2O.缬氨酸锑配合物的晶体结构属于三斜晶系,晶胞参数为a=0.959 9 nm,b=1.506 8 nm,c=1.985 1 nm,α=92.27°,β=... 详细信息

采用室温固相合成法合成了缬氨酸与三氯化锑、三氯化铋的两种生物配合物,其组成为Sb(C5H10O2N)3.2H2O,Bi(C5H10O2N)2Cl.0.5H2O.缬氨酸锑配合物的晶体结构属于三斜晶系,晶胞参数为a=0.959 9 nm,b=1.506 8 nm,c=1.985 1 nm,α=92.27°,β=95.05°,γ=104.27°;缬氨酸铋配合物的晶体结构属于单斜晶系,晶胞参数为a=1.601 2 nm,b=1.894 1 nm,c=1.839 nm,β=99.73°.远红外、红外光谱表明这两种新的配合物中锑、铋与缬氨酸的成键情况;并用差热-热重法对这两种配合物做了热分析,进一步验证了配合物的组成.

关键词：缬氨酸配合物锑铋三氯化物固相反应合成