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Chemical Research in Chinese Universities 2018年第3期34卷 350-357页

作者： LIU Xiaofang ZENG Shangjing WANG Runwei zhang zongtao QIU Shilun State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changehun 130012 E R. China CAS Key Laboratory of Synthetic Rubber Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

Hierarchical silicalite-1 zeolites were obtained from the direct conversion of a mixture of ground solid raw materials via a steam-assisted crystallization（SAC） method without involvement of any mesoscale template. Only a trace amount of water was necessary during the crystallization, implying that the amount of water can be dramatically reduced, which still offers easy separation and high yields. The simple procedure involved only grinding and heating, which not only saves resources and energy, but also significantly reduces the discharge of eco-friendly synthesis of zeolites for practical applications. Compared to conventional bulk silicalite-1, the nanosized hierarchical zeolites with MFI structure show enhanced removal capabilities for methylene blue owing to their hierarchical porosity.

关键词： Hierarchically silicalite-1 zeolite Steam-assisted crystallization Easy separation Secondary template excluding

A Novel, Efficient and Facile Method for the Template Removal from Mesoporous Materials

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Chemical Research in Chinese Universities 2014年第6期30卷 894-899页

作者： CHEN Lu JIANG Shang WANG Runwei zhang zongtao QIU Shilun State Key Laboratory of Inorganic Synthesis & Preparative Chemistry Jilin University Changehun 130012 P. R. China College of Chemistry and Biology Beihua University Jilin 132013 P. R. China

A new catalytic-oxidation method was adopted to remove the templates from SBA-1 5 and MCM-4 1 me- soporous materials via Fenton-like techniques under microwave irradiation. The mesoporous silica materials were treated with different Fenton agents based on the template＇s property and textural property. The samples were cha- racterized by powder X-ray diffraction（XRD） measurement, N2 adsorption-desorption isotherms, infrared spectro- scopy, 29Si MAS NMR and thermo gravimetric analysis（TGA）. The results reveal that this is an efficient and facile approach to the thorough template-removal from mesoporous silica materials, as well as to offering products with more stable structures, higher BET surface areas, larger pore volumes and larger quantity of silanol groups.

关键词： Detemplation Mesoporous silica material Fenton technique Microwave Hydrogen peroxide

Fe_(3)O_(4)@C 3D foam for strong low-frequency microwave absorption

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Journal of Materiomics 2023年第1期9卷 148-156页

作者： Li Wang zhang Chen Xue Wang Liying zhang zongtao zhang Qi Zhao Yanfeng Gao School of Materials Science and Engineering Shanghai UniversityShanghai200444China Shanghai Collaborative Innovation Center for High Performance Fiber Composites Center for Civil Aviation CompositesDonghua UniversityShanghai201620China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450066China

Low-frequency microwave absorbing materials have been challenging for many ***-dimensional dielectric/magnetic porous materials are beneficial for improving the low-frequency microwave absorbing performance because of natural resonance and improved impedance *** this study,Fe_(3)O_(4)@C 3D foam was prepared by carbothermal reduction method and the microwave attenuation performances and mechanisms were *** adjusting the content of Fe_(3)O_(4)@C 3D foam in paraffin composites,the low-frequency microwave attenuation capacity could be effectively *** minimum reflection loss(RLmin)of paraffin composite with 40%(in mass fraction)loading exhibits-54.7 dB at 4.1 GHz for a thickness of 4.0 ***,the paraffin composite with 50%(in mass fraction)loading could almost cover 2–4 GHz(S-band)in the thickness range of 3.5–5.5 *** strong low-frequency microwave attenuation property of Fe_(3)O_(4)@C 3D foam is mainly attributed to excellent low-frequency impedance matching,natural resonance,interfacial/dipole polarization,multiple reflection and *** method provides a new perspective for preparing lightweight and high performance low-frequency microwave absorbing materials.

关键词： Fe_(3)O_(4)@C 3D foam Low-frequency microwave absorption

Synthesis and Visible-light Photocatalytic Performance of C-doped Nb2O5 with High Surface Area

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Chemical Research in Chinese Universities 2018年第2期34卷 274-278页

作者： DING Shuang WANG Runwei zhang Panpan KANG Bonan zhang Daliang zhang zongtao QIU Shilun Stage Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

C-doped Nb2O5 with abundant mesopores has been successfully synthesized through a facile solvothermal synthetic strategy followed by calcination treatment. The resulting C-doped Nb2O5 displayed the highest BET surface area（345 m^2/g） and large mesopore size（ca. 4.2 nm）, capable of offering more accessible active sites as well as faster mass transfer for catalysis. Besides, the doping of C（2.21%, molar fraction） at the O sites in Nb2O5 lattice greatly enhanced visible-light response by lowering the band gap, thereby making the material a photocatalyst under visible-light irradiation. Typically, the C-doped Nb2O5 exhibited a high H2 evolution rate of ca. 39.10·μmol·g^-1·h^-1 and also degraded RhB dye completely after 30 min of visible light exposure, which turned out to be much better than Degussa P25 and pure Nb2O5 catalysts.

关键词： C-Doped Highest BET surface area Degradation RhB H2 evolution

Synthesis and Characterization of Cu Decorated Zeolite A@Void@Et-PMO Nanocomposites for Removal of Methylene Blue by a Heterogeneous Fenton Reaction

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Chemical Research in Chinese Universities 2019年第3期35卷 363-369页

作者： LI Xiayu ZENG Shangjing QU Xuejian DAI Jinyu LIU Xiaofang WANG Runwei zhang zongtao QIU Shilun State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin UniversityChangchun 130012P. R. China Key Laboratory of High-performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130012P. R. China

Hydrothermal synthesized nano zeolite A has been encapsulated with ethyl bridged periodic mesoporous organosilica(Et-PMO) shell tlirougli a simple modified Stober method and an organosilane-directed growth-induced etching strategy, the obtained yolk-shell structured A@Et-PMO nanocomposite(YS-A@Et-PMO) was further functionalized by the impregnation of copper ions, realizing the composite material with hierarchical porous and catalytic properties. The morphology and metal content of the Cu/A and Cu/YS-A@Et-PMO were fully characterized. As compared to tlie parent material, the composite Cu/YS-A@Et-PMO has an efficient adsorption and catalytic degradation performance on methylene blue(MB), the removal efficiency reached as high as 95% of 60 mg/L MB within 10 min. These novel structured porous composites may have great potential application for the removal of organic dye including waste effluents.

关键词： Fenton reaction Yolk-shell structure Zeolite A Et-PMO

TiO_(2)-carbon porous nanostructures for immobilization and conversion of polysulfides

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Chinese Chemical Letters 2023年第1期34卷 527-533页

作者： Keke Gao Rui Xu Yunxiang Chen zongtao zhang Jiashuo Shao Haipeng Ji Liying zhang Shasha Yi Deliang Chen Junhua Hu Yanfeng Gao School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Shanghai UniversityShanghai 200444China

Lithium-sulfur batteries(LSBs)are among the most promising series of next-generation high density energy storage ***,the problem of“shuttle effect”caused by dissolution and migration of polysulfide intermediates has severely inhibited their practical ***,TiO_(2)-carbon nanocomposites embedded hierarchical porous carbon(T-hPC)interlayers are fabricated via Ti_(3)C_(2)MXene assisted phase separation and annealing *** T-hPC processes micro-to macro-scale multipores along with highly adsorptive and catalytic carbon supported TiO_(2) nanoparticles,which significantly enhances the polysulfides immobilization and improves the redox reaction kinetics when applied as lithium-sulfur battery *** initial discharge specific capacity of 1551.1 m Ah/g and a stable capacity of 893.8 m Ah/g after 200 cycles at 0.5 C are obtained,corresponding to a capacity decay rate of only 0.04%per *** investigations in this paper can provide a simple and effective strategy to enhance the electrochemical properties for lithium-sulfur batteries.

关键词： Hierarchical porous carbon Phase separation MXene Interlayer Lithium-sulfur battery

Research paper Air atmosphere available fast one-pot synthesis of VO_(2)nanoparticles with excellent thermochromic properties by a novel liquid-shielding method

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Journal of Materiomics 2024年第1期10卷 17-26页

作者： Zhi Cao Jin Li Chunhui zhang Ke Jiao Yunxiang Chen Yifei Liu Xinghui Hou Haipeng Ji Liying zhang Shasha Yi Yu Wang zhang Chen Yanfeng Gao zongtao zhang School of Materials Science and Engineering Zhengzhou UniversityKexue Ave 100Zhengzhou450001China School of Materials Science and Engineering Shanghai UniversityShangda Rd 99Shanghai200444China

As a typical strongly correlated transition oxide,vanadium dioxide(VO_(2))based nanomaterials have drawn many research attentions these years due to the giant metal-to-insulator phase transition(MIPT)at around 68℃.However,due to the complexities of the V-O system and interplays between various vanadium oxide phases,the synthesis of high-quality VO_(2)nanopowders is still fraught with many challenges,especially in air *** this paper,we report a novel air atmosphere available liquid-shielding synthesis method for thermochromic VO_(2)nanoparticles,by using low-eutectic molten-salt(LiCl-KCl)as the liquid-state air-insulation medium at elevated temperature and high-pressure pressed VOSO_(4)-KCl pillars immersed in these liquid salts as the *** amounts of glucose are added to introduce a slight reductive environment,and well dispersed VO_(2)nanoparticles with excellent ther-mochromic properties can be directly synthesized at an ultra-low temperature of 375℃.This feasible and atmosphere-available mass-production method is rarely reported in the related fields,which may provide a novel protocol strategy for the synthesis of high performance thermochromic VO_(2)and other functional oxide powders.

关键词： Vanadium dioxide Nanoparticle Molten salt Liquid shielding Thermochromic properties

Functionalized Hierarchical ZSM-5 Zeolites for the Viscosity Reduction of Heavy Oil at Low Temperature

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Chemical Research in Chinese Universities 2022年第4期38卷 1083-1088页

作者： XIAO Peiwen LI Hui WANG Pingmei LIU Bolun JING Wendan HE Lipeng WANG Runwei HAN Xue zhang zongtao QIU Shilun LUO Jianhui Research Institute of Petroleum Exploration&Development PetroChinaBeijing100083P.R.China Key Laboratory of Nano Chemistry(KLNC) CNPCBeijing100083P.R.China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun130012P.R.China

Herein,we propose a novel approach to reduce the viscosity of heavy oil by functional hierarchical CTMS-ZSM-5-PTMS ***-ZSM-5-PTMS zeolites synthesized by asymmetric modification and selective alkali etching can reduce the viscosity of heavy oil through adsorbing *** method can reduce the viscosity of heavy oil from hundreds of thousands mPa·s to about ten thousand mPa·*** work provides an economical and environmentally friendly candidate for heavy oil viscosity reduction under low-temperature conditions.

关键词： Heavy oil Viscosity Hierarchical ZSM-5 zeolite

孔道型微孔和介孔分子筛的改性及超级绝热性能

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高等学校化学学报 2014年第4期35卷 689-694页

作者：张涛董雪张宗弢吉林大学化学学院长春130012

在水热体系中合成了具有规则孔道结构的微孔分子筛ZSM-5和介孔分子筛MCM-41,SBA-15,MAS-5,通过改变材料表面的电性对介孔材料进行了化学修饰.采用X射线衍射(XRD)和扫描电子显微镜(SEM)对样品的结构、形貌进行了表征;通过氮气吸附-脱附... 详细信息

在水热体系中合成了具有规则孔道结构的微孔分子筛ZSM-5和介孔分子筛MCM-41,SBA-15,MAS-5,通过改变材料表面的电性对介孔材料进行了化学修饰.采用X射线衍射(XRD)和扫描电子显微镜(SEM)对样品的结构、形貌进行了表征;通过氮气吸附-脱附测试了产物的比表面积,采用BJH法计算孔分布和孔容;将制得的样品压制成绝热材料后,进行导热性质测定.常温(25℃)常压下,有序介孔分子筛MCM-41的导热系数为0.038 W·m-1·K-1,具有少量微孔结构的MAS-5的导热系数为0.035W·m-1·K-1,二者均为超级绝热材料.材料经改性后,绝热性能有所提高:MCM-41的导热系数降至0.028 W·m-1·K-1,MAS-5的导热系数降至0.017 W·m-1·K-1.结合纳米介孔材料导热理论模型进行分析,发现纳米孔绝热材料的孔径越小,孔隙率越大,绝热性能好;介孔分子筛的导热系数与其孔壁厚度、孔径大小以及孔隙率有关.

关键词：介孔分子筛微孔分子筛纳米绝热材料热导

F^-离子对C掺杂Nb_2O_5纳米粒子生长及光催化性能的影响

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高等学校化学学报 2014年第4期35卷 695-701页

作者：丁双王润伟张宗弢裘式纶吉林大学无机合成与制备化学国家重点实验室长春130012

在合成C掺杂Nb2O5的基础上,通过引入F-离子合成出具有更高光催化活性的C,F共掺杂Nb2O5光催化材料,对合成样品进行了分析、表征并测试了其光降解罗丹明B的活性,研究了F-离子对C掺杂Nb2O5纳米粒子生长及光催化性能的影响.结果表明,在合成... 详细信息

在合成C掺杂Nb2O5的基础上,通过引入F-离子合成出具有更高光催化活性的C,F共掺杂Nb2O5光催化材料,对合成样品进行了分析、表征并测试了其光降解罗丹明B的活性,研究了F-离子对C掺杂Nb2O5纳米粒子生长及光催化性能的影响.结果表明,在合成过程中引入F-离子能够促进Nb2O5纳米晶的生长,尤其是沿[001]方向的生长.实验结果还表明,F未进入Nb2O5纳米晶的晶格内部,而是以F-离子的形式分散在Nb2O5纳米结构中,通过促进Nb2O5表面·OH自由基的产生,起到提高合成样品光催化活性的作用.

关键词： F-离子 C掺杂Nb2 O5 可见光光催化