Jiafu Chen

Hefei National Center for Physical Sciences at Nanoscale

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Zhimin Chen

Zhengzhou University

Qun Xu

Zhengzhou University

Jianwei Fu

Zhengzhou University

Yong Hu

Zhejiang A & F University

Shu‐Hong Yu

University of Science and Technology of China

Qun Xu

Zhengzhou University

Zaichun Zhou

Hunan University of Science and Technology

Qiuhua Liu

Hunan University of Science and Technology

Min Tang

Ministry of Agriculture and Rural Affairs

Zhiwei Wang

Westlake University

Cooperative Institutions

Chinese Academy of Sciences

University of Science and Technology of China

Zhengzhou University

Hefei National Center for Physical Sciences at Nanoscale

University of Chinese Academy of Sciences

National Synchrotron Radiation Laboratory

Shanghai Jiao Tong University

Collaborative Innovation Center of Chemistry for Energy Materials

Xi'an Jiaotong University

China Academy of Engineering Physics

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CCDC 1527310: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

Min Tang Yan Yang Shaowei Zhang Jiafu Chen Jian Zhang

10.5517/ccdc.csd.cc1n8929

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Citations (0)

Preparation of well uniform-sized and monodisperse ZnS nanoballs by γ-irradiation method

Materials Letters (2006)

Xuan Xue Jiafu Chen Yong Hu

Dispersity

Field emission microscopy

Ambient pressure

10.1016/j.matlet.2006.04.017

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Citations (11)

Photocatalytic studies of CdS nanoparticles assembled on carbon microsphere surfaces with different interface structures: from amorphous to graphite-like carbon

CrystEngComm (2012)

Yu Liu Mojiao Zhou Yong Hu Haisheng Qian Jiafu Chen

A rapid microwave-assisted method was used for the accurate coating of CdS nanoparticles on the surface of colloidal carbon microspheres to form C/CdS hybrid microspheres, which demonstrated enhanced visible-light-photocatalytic activity for the degradation of rhodamine B (RhB). To investigate the optimal photocatalytic synergistic effect, the above as-prepared of C/CdS hybrid microspheres were treated in a tube furnace by annealing at different temperatures (from 300 to 800 °C) in a N2 flow, which resulted in CdS nanoparticles assembled on different carbon layers (from amorphous to graphite-like carbon). The changes in FT-IR and Raman spectra that were caused by different interfaces were studied. Further, the synergic effect between CdS nanoparticles and different carbon layers, which influence the photocatalytic activity, was then investigated systematically. The results show that the photocatalytic activity of these samples was gradually enhanced as the calcination temperature increased. But compared to the sample without calcination, the photocatalytic activity decreases first and then increases. The combination of CdS and graphite-like carbon may be an ideal system to cause a rapid photoinduced charge separation and decreased possibility of recombination of electron–hole pairs by taking advantage of graphite-like carbon's unique electron transport properties, which increase the number of holes participating in the photooxidation process and enhance the photocatalytic activity.

Rhodamine B

Amorphous carbon

Carbon fibers

10.1039/c2ce25369k

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Citations (18)

Synthesis of uniform discrete cage-like nitrogen-doped hollow porous carbon spheres with tunable direct large mesoporous for ultrahigh supercapacitive performance

Applied Surface Science (2017)

Mingming Fang Zhimin Chen Qiuge Tian Yanxia Cao Chong Wang

Carbon fibers

Polystyrene

Template method pattern

Dodecahedron

10.1016/j.apsusc.2017.06.279

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Citations (29)

Preparation of polystyrene particles with different morphologies

Polymer Engineering and Science (2011)

Jiafu Chen Yan Li Fengfeng Xue Zhimin Chen Qun Xu

Abstract Micron‐sized, cross‐linked polystyrene (PS) particles with different morphologies were prepared by the developed dispersion polymerization. By scanning electron microscope (SEM) observation, it was found that these PS particles had interesting shapes such as deformed sphere, hollow hemisphere and spheroid‐like shape when initial monomer concentration, reaction time, and temperature and addition way of the reagent added in the third stage were different. The shape of the PS particles was changed from hollow hemisphere to spheroid‐like shape with prolongation of the reaction time. It was remarkable that the rough surface of hollow‐hemisphere‐like PS particles became smooth and the hollow structure of smooth‐hollow‐hemisphere‐like PS particles grew into solid structure at the same time. The formation mechanism behind these phenomena was discussed. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers

Polystyrene

Spheroid

Dispersion polymerization

10.1002/pen.21850

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Citations (2)

CCDC 1527315: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

Min Tang Yan Yang Shaowei Zhang Jiafu Chen Jian Zhang

10.5517/ccdc.csd.cc1n897g

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Facile synthesis of Au nanoparticles supported on polyphosphazene functionalized carbon nanotubes for catalytic reduction of 4-nitrophenol

Journal of Materials Science (2014)

Xuzhe Wang Jianwei Fu Minghuan Wang Yajie Wang Zhimin Chen

Thermogravimetric analysis

Surface Modification

Polyphosphazene

Nanomaterials

10.1007/s10853-014-8212-5

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Citations (89)

Synthesis of monodispersed single-crystal compass-shaped Mn3O4 via gamma-ray irradiation

Materials Letters (2005)

Yong Hu Jiafu Chen Xuan Xue Tanwei Li

Compass

Crystal (programming language)

10.1016/j.matlet.2005.08.056

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Citations (37)

Synthesis of Polygonized Carbon Nanotubes Utilizing Inhomogeneous Catalyst Activity of Nonspherical Fe₃O₄ Nanoparticles

The Journal of Physical Chemistry B (2006)

Wen Qian Jiafu Chen Liusuo Wu Fangyu Cao Qianwang Chen

The synthesis of novel carbon nanotubes (CNTs) with polygonal cross sections by heating a powder mixture of ferrocene, oxalic acid, and the alkali metal potassium at mediate temperatures (480-500 degrees C) is reported. This kind of special polygonized CNTs has two distinctive characters: first, ribbonlike polygonized CNTs have diameters between 60 and 200 nm, and the lengths as long as several microns; second, the edge of polygonized CNTs is well-graphitized, the wall of which is amorphous. On the basis of evidence that the formation of polygonized CNTs appears to be strongly determined by inhomogeneous catalytic activity of nonspherical Fe(3)O(4) nanoparticles, we propose the possible growth model.

Oxalic Acid

Morphology

Carbon fibers

10.1021/jp062690k

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Citations (22)

What Is the Real Origin of Single-Walled Carbon Nanotubes for the Performance Enhancement of Si-Based Anodes?

Journal of the American Chemical Society (2024)

Haolin Wang Yunfeng Chao Jinzhao Li Qi Qi Junfeng Lu

A large amount of lithium-ion storage in Si-based anodes promises high energy density yet also results in large volume expansion, causing impaired cyclability and conductivity. Instead of restricting pulverization of Si-based particles, herein, we disclose that single-walled carbon nanotubes (SWNTs) can take advantage of volume expansion and induce interfacial reactions that stabilize the pulverized Si-based clusters in situ. Operando Raman spectroscopy and density functional theory calculations reveal that the volume expansion by the lithiation of Si-based particles generates ∼14% tensile strains in SWNTs, which, in turn, strengthens the chemical interaction between Li and C. This chemomechanical coupling effect facilitates the transformation of sp2-C at the defect of SWNTs to Li–C bonds with sp3 hybridization, which also initiates the formation of new Si–C chemical bonds at the interface. Along with this process, SWNTs can also induce in situ reconstruction of the 3D architecture of the anode, forming mechanically strengthened networks with high electrical and ionic conductivities. As such, with the addition of only 1 wt % of SWNTs, graphite/SiOx composite anodes can deliver practical performance well surpassing that of commercial graphite anodes. These findings enrich our understanding of strain-induced interfacial reactions, providing a general principle for mitigating the degradation of alloying or conversion-reaction-based electrodes.

Volume expansion

Carbon fibers

Energy density

10.1021/jacs.4c01677

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Citations (8)