Kefeng Xie

Xidian University

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Yonghui Zhang

Hebei University of Technology

Xuanyu Yang

Zhengzhou University of Light Industry

Feilong Gong

Zhengzhou University of Light Industry

Shaoming Fang

Zhengzhou University of Light Industry

Li-Juan Yue

Zhengzhou University of Light Industry

Wen‐Kui Dong

Lanzhou Jiaotong University

Junli Chen

Zhengzhou University of Light Industry

Hao‐Li Zhang

Lanzhou University

Li Fu

China National Petroleum Corporation (China)

Ruo‐Nan Bian

Lanzhou Jiaotong University

Cooperative Institutions

Chinese Academy of Sciences

102

Lanzhou Jiaotong University

Lanzhou University

Huazhong University of Science and Technology

Zhengzhou University of Light Industry

Lanzhou City University

University of Chinese Academy of Sciences

Central South University

Wuhan National Laboratory for Optoelectronics

Northwest Normal University

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A highly sensitive dual-channel chemical sensor for selective identification of B4O72−

Microchemical Journal (2020)

Ji‐Fa Wang Ruo‐Nan Bian Tao Feng Kefeng Xie Li Wang

Naked eye

10.1016/j.microc.2020.105676

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Citations (75)

Ultra-sensitive triethylamine sensors based on oxygen vacancy-enriched ZnO/SnO₂ micro-camellia

Journal of Materials Chemistry C (2021)

Yonghui Zhang Chao-Nan Wang Feilong Gong Junli Chen Kefeng Xie

The gas sensing response of ZnO–SnO₂-10 and the the adsorption energy of TEA on ZnO–SnO₂-10 were enhanced 4.7 folds and 2.34 folds, respectively compared to that of the pure ZnO.

Triethylamine

Camellia

10.1039/d1tc00983d

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Citations (49)

Surface effect of the MgCl2 support in Ziegler–Natta catalyst for ethylene polymerization: A computational study

Applied Surface Science (2022)

Kefeng Xie Shengyuan Xu Hao Wei Jie Wang Anping Huang

Natta

Ziegler–Natta catalyst

10.1016/j.apsusc.2022.153002

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Citations (43)

Offshore, Unmanned Auto-Leveling Sea-Surface Drifting Platform with Compact Size

Journal of Marine Science and Engineering (2023)

Zonglai Mo Kexiang Li Kefeng Xie Jun Li Yanjun Li

This paper proposes an offshore, unmanned auto-leveling sea-surface drifting platform, with a compact size of 0.7 m in diameter, used for obtaining air-sea interface environmental parameters. The platform was designed based on the parallel mechanism with limited degrees of freedom. The mechanical structure, control system hardware, and software of the principal prototype are introduced. A ground-based device was developed to simulate wave disturbance, based on which the static and dynamic simulation experiments were carried out. Experimental results show that the auto-leveling system can achieve real-time leveling against the angle deviation induced by waves, with a leveling accuracy of 0.2° in a simulated wave with an angle of 12°, which meets the requirements of observation equipment.

Interface (matter)

10.3390/jmse11030506

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CCDC 2048495: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Yu‐Jie Ding Yajuan Li Peng Li Kefeng Xie Wen‐Kui Dong

10.5517/ccdc.csd.cc26rmh3

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Abnormally aggregation-induced emissions observed from hydrogen- and silyl-substituted siloles

Main Group Metal Chemistry (2020)

Zhengang Han Kefeng Xie

Abstract Silacyclopentadienes (siloles) are currently of great interest because of their intriguing aggregation-induced emission (AIE) characteristics. In this work, abnormally AIE phenomena were observed from silyl- and hydrogen-substituted siloles respectively. We propose silyl-substituent and hydrogen atom effects to explain this via both experiments and theoretical calculations. It was discovered that trimethylsilyl substituents destroyed the p-interactions with the silole core and resulted in the non-fluorescence. Additionally, 1-chloro-1-H-2,3,4,5-tetraphenylsilole featuring strong fluorescences in both solid and solution states with high fluorescence quantum yields represents a new potential photoelectric material. This work not only reports the silole with strong fluorescences in both solid and solution states for the first time but also contributs to enrich the AIE research of siloles.

Trimethylsilyl

Hydrogen atom

10.1515/mgmc-2020-0015

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Citations (4)

Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia

Advanced Materials (2023)

Wensheng Gao Kefeng Xie Jin Xie Xiaomei Wang Hong Zhang

Involving eight electron transfer process and multiple intermediates of nitrate (NO3- ) reduction reaction leads to a sluggish kinetic and low Faradaic efficiency, therefore, it is essential to get an insight into the reaction mechanism to develop highly efficient electrocatalyst. Herein, a series of reduced-graphene-oxide-supported RuCu alloy catalysts (Rux Cux /rGO) are fabricated and used for the direct reduction of NO3- to NH3 . It is found that the Ru1 Cu10 /rGO shows the ammonia formation rate of 0.38 mmol cm-2 h-1 (loading 1 mg cm-2 ) and the ammonia Faradaic efficiency of 98% under an ultralow potential of -0.05 V versus Reversible Hydrogen Electode (RHE), which is comparable to Ru catalyst. The highly efficient activity of Ru1 Cu10 /rGO can be attributed to the synergetic effect between Ru and Cu sites via a relay catalysis, in which the Cu shows the exclusively efficient activity for the reduction of NO3- to NO2- and Ru exhibits the superior activity for NO2- to NH3 . In addition, the doping of Ru into Cu tunes the d-band center of alloy and effectively modulates the adsorption energy of the NO3- and NO2- , which promotes the direct reduction of NO3- to NH3 . This synergetic electrocatalysis strategy opens a new avenue for developing highly efficient multifunctional catalysts.

Ammonia production

Selective catalytic reduction

10.1002/adma.202202952

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Citations (239)

CCDC 2052634: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Kefeng Xie L.-L. Li W.-D. Li Xiaolong Xu W.-K. Dong

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc26wy02

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Dendritic branching Z-scheme Cu2O/TiO2 heterostructure photocatalysts for boosting H2 production

Journal of Physics and Chemistry of Solids (2021)

Yonghui Zhang Mingming Liu Junli Chen Kefeng Xie Shaoming Fang

Branching (polymer chemistry)

Hydrothermal Synthesis

10.1016/j.jpcs.2021.109948

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Citations (28)

FIRST PRINCIPLES STUDY OF CYTOSINE ADSORPTION ON GRAPHENE

International Journal of Nanoscience (2009)

Yonghui Zhang Kai‐Ge Zhou Kefeng Xie Caihong Liu Hao‐Li Zhang

The adsorption of cytosine on graphene surface is studied using density functional theory with local density approximation. The cytosine is physisorbed onto graphene through π–π interaction, with a binding energy around -0.39 eV. Due to the weak interaction, the electronic properties of graphene show little change upon adsorption. The cytosine/graphene interaction can be strongly enhanced by introducing metal atoms. The binding energies increase to -0.60 and -2.31 eV in the presence of Li and Co atoms, respectively. The transport behavior of an electric sensor based on Co -doped graphene shows a sensitivity one order of magnitude higher than that of a similar device using pristine graphene. This work reveals that the sensitivity of graphene-based bio-sensors could be drastically improved by introducing appropriate metal atoms.

Cytosine

10.1142/s0219581x09005591

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Citations (6)