Yuefeng Liu

Dalian National Laboratory for Clean Energy

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Cuong Pham‐Huu

Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé

Wei Chu

Sichuan University

Cuong Duong‐Viet

Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé

Housseinou Ba

Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé

Jean‐Mario Nhut

Centre National de la Recherche Scientifique

Zhenlong Zhang

Xi'an Jiaotong University

Giuliano Giambastiani

National Interuniversity Consortium of Materials Science and Technology

Giulia Tuci

National Interuniversity Consortium of Materials Science and Technology

Huiping Gao

Henan University

Jingjie Luo

Dalian University of Technology

Cooperative Institutions

Chinese Academy of Sciences

230

Dalian Institute of Chemical Physics

108

University of Chinese Academy of Sciences

106

Dalian National Laboratory for Clean Energy

Centre National de la Recherche Scientifique

Sichuan University

Dalian University of Technology

Zhejiang University

Dalian University

University of Science and Technology of China

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Hierarchical porous carbon fibers/carbon nanofibers monolith from electrospinning/CVD processes as a high effective surface area support platform

Journal of Materials Chemistry A (2016)

Yuefeng Liu Jingjie Luo Camille Helleu Mathieu Behr Housseinou Ba

Hierarchical carbon fibers/carbon nanofibers composites, with high effective surface areas and controlled macroscopic shapes, were successfully synthesized through a combination of electrospinning and chemical vapour deposition.

Electrospinning

Monolith

10.1039/c6ta09414g

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Citations (55)

Nitrogen-doped carbon nanotubes on silicon carbide as a metal-free catalyst

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION) (2014)

Cuong Duong‐Viet Housseinou Ba Yuefeng Liu Lai Truong‐Phuoc Jean‐Mario Nhut

Carbon fibers

10.1016/s1872-2067(14)60116-9

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Citations (33)

Surface Modification with CuFeS₂ Nanocrystals to Improve the Efficiency and Stability of Perovskite Solar Cells

ACS Applied Materials & Interfaces (2023)

Siqi Xiao Liu-Zong Liu Zhenlong Zhang Yuefeng Liu Huiping Gao

Poor stability retards the industrialization of perovskite solar cells (PSCs). One of the effective ways to solve this issue is to modify the perovskite surface to improve the efficiency and stability of the PSCs. Herein, we synthesized CuFeS2 nanocrystals and applied them to modify the perovskite surface. The efficiency of the PSCs with CuFeS2 modification is improved to 20.17% from 18.64% for the control devices. Some investigations demonstrate that the CuFeS2 modification passivates the perovskite surface defects and induces better energy band arrangement. Furthermore, the stability of the PSCs with CuFeS2 modification is improved compared with the devices without CuFeS2 modification. The efficiency of the PSCs with CuFeS2 modification maintains 93% of its initial value, whereas that of the devices without CuFeS2 modification decreases to 61% of the initial value. This work demonstrates that CuFeS2 is a novel material used as a modification layer to enhance the efficiency and stability of the PSCs.

Surface Modification

10.1021/acsami.3c04418

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Citations (2)

Enhanced efficiency and stability of perovskite solar cells through nanoimprinting dual-functional nanostructured PEAI/2D/3D perovskite interface

Chemical Engineering Journal (2024)

Yifan Wang Yuefeng Liu Hanwen Zhang Chang Liu Chun-meng Jin

Interface (matter)

10.1016/j.cej.2024.155686

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CO2 methanation under dynamic operational mode using nickel nanoparticles decorated carbon felt (Ni/OCF) combined with inductive heating

Catalysis Today (2019)

Wei Wang Cuong Duong‐Viet Zhenxin Xu Housseinou Ba Giulia Tuci

Methanation

Induction Heating

Carbon fibers

10.1016/j.cattod.2019.02.050

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Citations (39)

Direct Insight into Ethane Oxidative Dehydrogenation over Boron Nitrides

ChemCatChem (2017)

Rui Huang Bingsen Zhang Jia Wang Kuang‐Hsu Wu Wen Shi

Abstract The ultimate objective of chemical conversion is to achieve 100 % selectivity from catalysis, and this is also a prodigious challenge for the conversion of light paraffins into olefins, because it involves controlled activation of highly stable aliphatic C−H bonds. Herein, we show that metal‐free boron nitride (BN) nanosheets not only enable the oxidative dehydrogenation of ethane to ethylene exclusively at near 10 % conversion, but they also deliver a remarkable 60 % selectivity at an ethane conversion of 78 % and remain stable over 400 h at 575 °C. Our operando infrared spectroscopy and 18 O isotope tracer study explicitly demonstrates that B−O(H) active sites are formed at the edges of BN through the aid of ethane, and the dehydrogenation circle is completed over these B−O sites by the assistance of O 2 .

10.1002/cctc.201700725

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Citations (124)

Temperature-Dependent Raman Spectrum of Hexagonal YMnO ₃ Films Synthesized by Chemical Solution Method

Chinese Physics Letters (2010)

Yuefeng Liu Bei Wang Zheng Haiwu Xiangyang Liu Yuzong Gu

We study the temperature-dependent Raman spectrum of hexagonal YMnO3 films prepared by a chemical solution method. There are seven Raman peaks (3A1 + E1 + 4E2) of the film identified at room temperature. From the results of temperature dependence of the Raman spectrum, it is deduced that the YMnO3 film has a magnetic phase transition temperature of about 123 K. The temperature variation phonon mode at 685 cm−1 shows an anomalous frequency variation near 123 K, suggesting either a more complex mechanism of spin-phonon coupling or strong mixing of phonon modes. The reason for the higher antiferromagnetic Néel temperature TN of the film than that of the bulk counterpart is also discussed.

Transition temperature

10.1088/0256-307x/27/5/056801

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Citations (4)

Cover Feature: Enhancing N₂ Fixation Activity by Converting Ti₃C₂ MXenes Nanosheets to Nanoribbons (ChemSusChem 21/2020)

ChemSusChem (2020)

Hua Wei Qian Jiang Claudio Ampelli Shiming Chen Siglinda Perathoner

The Cover Feature shows the direct NH3 synthesis from N2 and H2O realized at ambient conditions over MXene nanoribbons (MNRs). MXenes with 2D structure have been indicated as promising N2 electroreduction catalysts with the activity being related to edge planes. Herein, we show that the transformation from a MXene nanosheets to a 3D-type nanoribbon instead results in a significant enhancement of the N2 fixation activity due to the formation of exposed Ti-OH sites. More information can be found in the Communication by H. Wei, Q. Jiang, et al.

MXenes

Carbon fixation

10.1002/cssc.202002261

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Citations (2)

International Legal Status of Caspian Sea:Historical genesis,Definitive Factors and thelnfluences on egional Security

Shijie dili yanjiu (2010)

Gao Shu Yuefeng Liu

The collapse of Soviet Union entirely changed the global international system political geographical space.Particularly,littoral countries of the Caspian sea was Soviet Union and Iran,since December 1991, Russia,Iran,Kazakhstan,Turkmenistan,Azerbaijan have become littoral countries of Caspian Sea.The international agreement related legal status, determination of Boundaries of Caspian Sea,ecological security and exploit energy have already lost effectiveness.This paper demonstrates how shaped international legal status of the Caspian Sea from historical views and how the littoral countries have resolved this dispute.It also determines what the definitive factors for settled legal status of Caspian Sea are and how it impacts on regional security.

Maritime Security

Maritime boundary

Environmental security

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Titania-Decorated Silicon Carbide-Containing Cobalt Catalyst for Fischer–Tropsch Synthesis

ACS Catalysis (2013)

Yuefeng Liu Benoit de Tymowski F. Vigneron Ileana Florea Ovidiu Ersen

The metal–support interactions of titanium dioxide decorated silicon carbide (β-SiC)-supported cobalt catalyst for Fischer–Tropsch synthesis (FTS) were explored by a combination of energy-filtered transmission electron microscopy (EFTEM), 59Co zero-field nuclear magnetic resonance (59Co NMR), and other conventional characterization techniques. From the 2D elemental maps deduced by 2D EFTEM and 59Co NMR analyses, it can be concluded that the nanoscale introduction of the TiO2 into the β-SiC matrix significantly enhances the formation of small and medium-sized cobalt particles. The results revealed that the proper metal–support interaction between cobalt nanoparticles and TiO2 led to the formation of smaller cobalt particles (<15 nm), which possess a large fraction of surface atoms and, thus, significantly contribute to the great enhancement of conversion and the reaction rate. The cobalt time yield of the catalyst after modification increased to 7.5 × 10–5 molCO gCo–1 s–1 at 230 °C, whereas the C5+ selectivity maintained a high level (>90%). In addition, the adequate meso- and macro-pores of the SiC-based support facilitated intimate contact between the reactants and active sites and also accelerated the evacuation of the intermediate products. It was also worth noting that a superior and stable FTS specific rate of 0.56 gC5+ gcatalyst–1 h–1 together with high C5+ selectivity of 91% were obtained at common industrial content of 30 wt % cobalt.

Fischer–Tropsch process

Titanium Dioxide

10.1021/cs300729p

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Citations (90)