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Chinese Journal of Chemical Engineering 2018年第5期26卷 1229-1234页

作者： Zhenwei Zhang Peng Wang Fei Wang Yaqing Li Wei Lu Xingmao Jiang Xia Gui Zhi Yun College of Chemical Engineering Nanjing Tech University Nanjing 210009 China College of Mathematics Science and Chemical Engineering Changzhou Institute of Technology Changzhou 213022 China Department of Chemical Engineering Changzhou University Changzhou 213016 China Hubei Key Lab of Novel Reactor & Green Chemical Technology Key Laboratory for Green Chemical Process of Ministry of Education School of Chemical Engineering and Pharmacy Wuhan Institute of Technology China

Monodispersed MoS_2 nanospheres were successfully synthesized by using SiO_2 as hard template. The size and morphology of the MoS_2 nanospheres could be finely controlled by the content of SiO_2 and sulfur precursors. Furthermore, higher surface area of monodispersed MoS_2 nanospheres exhibited high reaction rate for hydrodesulfurization(HDS) of dibenzenethiophene(DBT).

关键词： Molybdenum disulfide hard template Monodisperse Hydrodesulfufization

Coupling Fe and Mo single atoms on hierarchical N-doped carbon nanotubes enhances electrochemical nitrogen reduction reaction performance

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Nano Research 2023年第4期16卷 5743-5749页

作者： Wenjie Cui Baokang Geng Xiang Chu Jianing He Lingxi Jia Xiaoxiao Han Xiao Wang Shuyan Song Hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Department of Chemistry Tsinghua UniversityBeijing 100084China

Electrochemical nitrogen reduction reaction(NRR)paves a new way to cost-efficient production of ammonia,but is still challenging in the sluggish kinetics caused by hydrogen evolution reaction competition and chemical inertness of N≡N ***,we report a“dual-site”strategy for boosting NRR performance.A high-performance catalyst is successfully constructed by anchoring isolated Fe and Mo atoms on hierarchical N doped carbon nanotubes through a facile self-sacrificing template route,which exhibits a remarkably improved NH3 yield rate of 26.8μg·h^(−1)·mg with 11.8%Faradaic efficiency,which is 2.5 and 1.6 times larger than those of Fe/NC and Mo/*** enhancement can be attributed to the unique hierarchical structure that profits from the contact of electrode and electrolyte,thus improving the mass and electron *** importantly,the in situ Fourier transform infrared spectroscopy(in situ FTIR)result firmly demonstrates the crucial role of the coupling of Fe and Mo atoms,which can efficiently boost the generation and transmission of*N2Hy intermediates,leading to an accelerated reaction rate.

关键词： dual-site single atom hard template synergetic effect nitrogen reduction reaction(NRR)

Effect of the pore length and orientation upon the electrochemical capacitive performance of ordered mesoporous carbons

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Journal of Energy Chemistry 2017年第1期26卷 121-128页

作者： Anran Huang Jingwang Yan Hongzhang Zhang Xianfeng Li Huamin Zhang Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023LiaoningChina Dalian National Laboratory for Clean Energy Dalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

By utilizing hard template method to adjust the mesopore length, and alkali activation to generate micro pores, two hierarchical porous carbons (HPCs) were prepared. With controlling of their mesopore length and the activation conditions, the complex system composed by HPCs and electrolyte was simplified and the effect of mesopore length on the performance of HPCs as electrodes in supercapacitors was investigated. It is found that with the mesopore length getting smaller, the ordered area gets smaller and the aggregation occurs, which is caused by the high surface energy of small grains. HPC with long pores (HPCL) exhibits a donut-like morphology with well-defined ordered mesopores and a regular orientation while in HPC with short pores (HPCS), short mesopores are only orderly distributed in small regions. Longer ordered channels form unobstructed ways for ions transport in the particles while shorter channels, only orderly distributed in small areas, results in blocked paths, which may hinder the electrolyte ions transport. Due to the unobstructed structure, HPCL exhibits good rate capability with a capacitance retention rate over 86% as current density increasing from 50 mA/g to 1000 mA/g. The specific capacitance of HPCL derived from the cyclic voltammetry test at 10 mV/s is up to 201.72 F/g, while the specific capacitance of HPCS is only 193.65 F/g. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

关键词： Supercapacitor Hierarchical porous carbon Ordered mesoporous carbon hard template

Lithium-storage properties of SiO_(2)nanotubes@C using carbon nanotubes as templates

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Particuology 2023年第12期83卷 32-39页

作者： Zixu Shi Chaoyun Shi Huili Shi Binfang He Guoqiang Qin Ao Li Jing Zhu Jingbo Chen College of Chemistry and Chemical Engineering Guizhou UniversityGuiyang550025China Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources Guizhou UniversityGuiyang550025China

Silica-based anode material is the most concerned material at present,which has the advantages of good cycle stability,high theoretical specific capacity and abundant ***,silica suffers from inherent low conductivity,severe volume expansion effect and low initial coulombic efficiency,which limits its application in lithium-ion *** structure can mitigate the volume expansion during lithiation/*** this article,silica nanotubes(SNTs)were prepared using carbon nanotubes(CNTs)as a template,and then the uniform carbon layer was coated on their surface by carbonization of citric *** hollow structure of nanotubes provides more sites for the insertion of Li+during lithiation and additional channels for Li+migration in the cycles,which improves the electrochemical *** can be enhanced by coating carbon *** specific capacity of the composite material is about 650 mAh g^(-1)at 0.1 A g^(-1)after 100 *** a specific capacity of 400 mAh g^(-1)even at 1 A g^(-1)after 100 *** silica-based material is a competitive anode material for lithium-ion batteries.

关键词： hard template Sio_(2)nanotubes MWCNT Lithium-ion batteries

Self-deposition for mesoporous carbon nanosheet with supercapacitor application

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Chinese Journal of Chemical Engineering 2023年第3期55卷 34-40页

作者： Juan Du Aibing Chen Senlin Hou Xueqing Gao College of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018China The Second Hospital of Hebei Medical University Shijiazhuang 050000China

Porous carbon sheets have wide application prospects in many fields,especially in energy storage of supercapacitor due to the features combining both 2D structure and porous ***,a self-deposition approach is proposed to obtain N-doped mesoporous carbon nanosheets (N-MCNs),using 3-aminophenol (3-AF) as precursor and Mg(OH)_(2) sheet as hard *** process realizes the direct carbon formation using 3-AF monomer as carbon precursor under the catalysis of hard template avoiding the polymerization and utilization of *** mass ratio of 3-AF to Mg(OH)_(2) plays an important role in determining the pore structures and the resulting capacitance *** results show that N-MCNs with a mass ratio of 3-AF and Mg(OH)_(2) of 1:1 have good electrochemical behavior for *** N-MCNs based electrode exhibits a high capacitance of 240 F·g^(-1)at 1 A·g^(-1),good rate performance(75.4%retention ratio at 20 A·g^(-1)),and high cycling stability with 98.3% initial capacitance retained after 10000 *** supercapacitors on N-MCNs achieve energy density of 18.2 W·h·kg^(-1) and power density of 0.4 kW·kg^(-1) operated within a wide potential range of 0–1.6 V in 1.0 mol·L^(-1) Na_(2)SO_(4) solution,exhibiting its potential for electrode materials with high performance.

关键词： Monomer self-deposition Mg(OH)_(2)catalysis hard template Carbon nanosheet Supercapacitor

Facile Synthesis of Porous Carbon Nitride Spheres with Hierarchical Three-Dimensional Mesostructures for CO_(2) Capture

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Nano Research 2010年第9期3卷 632-642页

作者： Qiang Li Jianping Yang Dan Feng Zhangxiong Wu Qingling Wu Sung Soo Park Chang-Sik Ha Dongyuan Zhao Department of Chemistry and Shanghai Key Laboratory of MolecularCatalysis and Innovative Materials Laboratory of Advanced MaterialsFudan UniversityShanghai 200433China Department of Polymer Science and Engineering Pusan National UniversityGeumjeong-guBusan 609-735Korea

Porous carbon nitride(CN)spheres with partially crystalline frameworks have been successfully synthesized via a nanocasting approach by using spherical mesoporous cellular silica foams(MCFs)as a hard template,and ethylenediamine and carbon tetrachloride as *** resulting spherical CN materials have uniform diameters of ca.4μm,hierarchical three-dimensional(3-D)mesostructures with small and large mesopores with pore diameters centered at ca.4.0 and 43 nm,respectively,a relatively high BET surface area of~550 m^(2)/g,and a pore volume of 0.90 cm^(3)/***-resolution transmission electron microscope(HRTEM)images,wide-angle X-ray diffraction(XRD)patterns,and Raman spectra demonstrate that the porous CN material has a partly graphitized *** addition,elemental analyses,X-ray photoelectron spectra(XPS),Fourier transform infrared spectra(FT-IR),and CO_(2) temperature-programmed desorption(CO_(2)-TPD)show that the material has a high nitrogen content(17.8 wt%)with nitrogen-containing groups and abundant basic *** hierarchical porous CN spheres have excellent CO_(2) capture properties with a capacity of 2.90 mmol/g at 25℃and 0.97 mmol/g at 75℃,superior to those of the pure carbon materials with analogous *** can be mainly attributed to the abundant nitrogen-containing basic groups,hierarchical mesostructure,relatively high BET surface area and stable ***,the presence of a large number of micropores and small mesopores also enhance the CO_(2) capture performance,owing to the capillary condensation effect.

关键词： Mesoporous materials carbon nitride nanocasting sphere hard template CO_(2)capture

Effect of Structural Properties of Mesoporous Co3O4 Catalysts on Methane Combustion

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Chemical Research in Chinese Universities 2016年第5期32卷 808-811页

作者： JIA Yongchang WANG Shuyuan LU Jiqing LUO Mengfei Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry Zhejiang Normal University Jinhua 321004 P R. China

Highly ordered 2D and 3D-Co3O4 catalysts were prepared using SBA-15 and KIT-6 as templates. Na- no-Co304 catalyst was obtained by calcination of cobalt nitrate as a comparison. The BET surface area of nano- CO304, 2D-Co3O4 and 3D-Co3O4 catalysts was 16.2, 63.9 and 75.1 mE/g, respectively. All the catalysts were tested for the total combustion of methane and their catalytic performance was in the order of 3D-Co3O4（T90=355℃）〉 2D-CoaO4（T90=383℃）〉nano-Co3O4（T90=455℃）. It was also found that the order of the areal specific reaction rates for the combustion of methane followed the same order of total activity. The characterization result demonstrates that enhanced catalytic performance of methane of the 2D-Co3O4 and 3D-Co3O4 catalysts is due to their pronounced reducibility and abundant active Co3O4 species, which was caused by the preferential exposure of {220} crystal planes in 3D-Co3O4 and 2D-Co3O4 catalysts compared to the nano-Co3O4.

关键词： Mesoporous Co3O4 hard template CH4 oxidation KIT-6 SBA-15

Low-cost and efficient visible-light-driven CaMg(CO_3)_2@Ag_2CO_3 microspheres fabricated via an ion exchange route

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Chinese Journal of Catalysis 2017年第11期38卷 1899-1908页

作者： Jian Tian Zhen Wu Zhen Liu Changlin Yu Kai Yang Lihua Zhu Weiya Huang Yang Zhou School of Metallurgy and Chemical Engineering Jiangxi University of Science and Technology Ganzhou 341000 Jiangxi China School of Chemistry and Environmental Engineering Wuyi University Jiangmen 529020 Guangdong China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou University Fuzhou 350002 Fujian China

CaMg(CO3)2microspheres were prepared and used as hard templates to fabricate a series of CaMg(CO3)2@Ag2CO3composite microspheres via a fast and low‐cost ion exchange *** effects of ion exchange time and temperature on the physicochemical properties and photocatalytic activities of the composite microspheres were studied through photocatalytic degradation of Acid Orange II under xenon lamp *** obtained samples were analyzed by X‐ray diffraction,scanning electron microscopy,Fourier transform infrared spectroscopy,UV‐vis diffuse reflectance spectroscopy,N2physical adsorption,and photocurrent *** CaMg(CO3)2@Ag2CO3sample with the highest activity was obtained with an ion exchange time of4h and temperature of40°*** degradation rate of Acid Orange II by this sample reached83.3%after15min of light irradiation,and the sample also performed well in phenol *** CaMg(CO3)2@Ag2CO3produced under these ion exchange conditions showed a well‐ordered hierarchical morphology with small particle sizes,which was beneficial to light absorption and the transfer of photoelectrons(e-)and holes(h+)to the catalyst ***,the separation of photogenerated carriers over the composites was greatly improved relative to bare CaMg(CO3)*** the very low content of Ag2CO3(2.56%),excellent photocatalytic performance was obtained over the CaMg(CO3)2@Ag2CO3microspheres.

关键词： hard template Ion exchange CaMg(CO3)2@Ag2CO3 microspheres Photocatalytic performance

hard Templating Synthesis of Mesoporous and Nanowire SnO_2 as Lithium Battery Anode Materials

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复旦学报（自然科学版） 2007年第5期46卷 830-页

作者： Hyesun Kim SunHye Lim Jaephil Cho Department of Applied Chemistry Kumoh National Institute of Technology

1 Results Recently,Ryoo's group reported the preparation of ordered mesoporous carbon using highly ordered mesoporous silica[1-2]. Mesoporous and nanowire SnO2 anode materials for lithium batteries were prepared using KIT-6 and SBA-15 SiO2 templates. The as-prepared SnO2 nanowires had a diameter of 6 nm and a length of ≈3 μm and Brunauer-Emmett-Teller (BET) surface area of 80 m2/g while mesoporous SnO2 showed a pore size of 3.8 nm and a BET surface area of 160 m2/g. The charge capacities of these two an...

关键词： hard template SnO2 anode material lithium battery