Article
Chemistry, Physical
Min Gao, Maki Nakahara, Andrey Lyalin, Tetsuya Taketsugu
Summary: The interaction between single-layer h-BN and Au(111) substrate promotes the chemical reactivity of small gold clusters on the support, enhancing the hydrogen evolution reaction (HER) activity. Different geometries and orientations of the gold clusters on the support can form energetically favorable hydrogen adsorption sites, significantly promoting HER activity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Applied
Fan Wu, Lei He, Wen-Cui Li, Rao Lu, Yang Wang, An-Hui Lu
Summary: In this study, a hexagonal boron nitride (BN) support with CuO modification was used to prepare highly dispersed Au catalysts, which exhibited excellent CO oxidation activity. The electron transfer between Au and Cu species on the CuO-modified BN surface favors the stabilization of highly dispersed Au nanoparticles and enhances CO adsorption, leading to improved catalytic performance. The results demonstrate that thermally stable and conductive CuO-modified BN is an excellent support for the preparation of highly dispersed and stable Au catalysts.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Kexin Liu, Shilong Yang, Yi Chen, Wenlei Zhang, Pu Liu, Xiucheng Zheng
Summary: In this study, a series of nano hexagonal boron nitride (h-BN) supported CuNi bimetallic catalysts were prepared, and the effects of different ratios and loadings on the hydrolysis reaction of ammonia borane were investigated. The optimal catalyst exhibited outstanding catalytic activity and durability, with high hydrogen generation rate and turnover frequency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Tao Xu, Yizhi Tu, Yatong Zhu, Yuting Shen, Kuibo Yin, Litao Sun
Summary: This study presents the nucleation and growth of nanopores in h-BN bilayers under electron irradiation, with the pore shape depending on the stacking angles. The initiation of pores is linked to boron vacancies, and the subsequent evolution leads to triangular or hexagonal pores. These findings can contribute to the rational design and fabrication of nanopores.
Article
Materials Science, Multidisciplinary
Mucun Li, Enxiu Wu, Linyan Xu, Xiaodong Hu, Xiaopu Miao, Jing Liu
Summary: Applying 2D materials to build memristors is a promising strategy in the semiconductor field. This study investigates the resistive switching behavior of mechanically exfoliated h-BN/Au memristors after electron beam doping. The memristor device shows good resistive switching performance, with an on/off ratio of 10(8), a low set voltage of 5 V, and high retention. This strategy provides an alternative method to improve memristor performance.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Physics, Applied
Zhengyu Yan, Amor Abdelkader, Wajira Mirihanage
Summary: This study investigates the structural transformation of h-BN at elevated temperatures through in situ x-ray diffraction data. The research reveals the potential to define the structure order during temperature variations and finds no direct correlation between the degree of exfoliation and structural order change during thermal cycling. Additionally, the study maps the particle size dependence of the structure order under elevated temperature.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Taha Salavati-fard, Bin Wang
Summary: This study utilizes density functional theory calculations to elucidate the detailed mechanism of photocatalytic degradation of PFCA over hexagonal boron nitride. The results demonstrate the crucial roles of point defects and oxygen dopants in activating the C-F bond and promoting PFCA degradation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Shaoen Jin, Hang Zheng, Junyu Zong, Xuedong Xie, Fan Yu, Wang Chen, Libo Gao, Can Wang, Yi Zhang
Summary: The study demonstrates the etching growth mechanism of a h-BN film on graphene, showing the element composition, chemical bonding formation, and the formation of the new R0 degrees graphene through experiments and measurements. It provides a deeper understanding for further research on h-BN/graphene heterojunctions.
Article
Nanoscience & Nanotechnology
Vidur Raj, Dipankar Chugh, Lachlan E. Black, M. M. Shehata, Li Li, Felipe Kremer, Daniel H. Macdonald, Hark Hoe Tan, Chennupati Jagadish
Summary: Research has shown that wafer-scale, few monolayers thick hBN as a passivation layer can significantly improve solar cell performance, with a relatively low interface defect density and potential for high-quality passivation. hBN-based passivation layers are especially useful in cases where the growth of lattice-matched passivation layers is complicated.
NPJ 2D MATERIALS AND APPLICATIONS
(2021)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study investigated the effects of BN content in porous SiC ceramics on their electrical, thermal, and mechanical properties in N2 and Ar atmospheres. It was found that the electrical resistivity was mainly controlled by the sintering atmosphere, while the thermal conductivity and flexural strength were more influenced by porosity and necking area changes between SiC grains.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Hongquan Fu, Kuntao Huang, Guangxing Yang, Yonghai Cao, Hongjuan Wang, Feng Peng, Xingke Cai, Hejun Gao, Yunwen Liao, Hao Yu
Summary: Porous hexagonal boron nitride (ph-BN) nano-sheets were synthesized via combustion and showed high catalytic activity due to oxygen-containing functional groups at the edges. By monitoring the evolution of surface functional groups at different temperatures, active functional groups on ph-BN were identified.
Article
Chemistry, Physical
Tarek A. Gad-Allah, Ruiyang Zhang, Yi Wang, Ying Zhou
Summary: In this study, a defective (001)-TiO2-x/h-BN composite was synthesized to enhance photocatalyst efficiency for environmental applications. The presence of oxygen vacancy in TiO2 crystals and the incorporation of h-BN contributed to better light harvesting and longer charge lifetime. The composite material efficiently removed NO with limited release of toxic by-products.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Fengting He, Shuling Wang, Yangming Lu, Pei Dong, Yang Zhang, Feifei Lin, Xiaoming Liu, Yongqiang Wang, Chaocheng Zhao, Shuaijun Wang, Xiaoguang Duan, Jinqiang Zhang, Shaobin Wang
Summary: This study successfully incorporated boron atoms into the tri-s-triazine unit of C3N4, forming isolated boron-nitrogen coordination. The boron atoms and cyano groups acted as hot spots and catalytic sites, amplifying charge dynamics and reducing the activation energy for the oxygen evolution reaction.
Article
Chemistry, Physical
Jingren Chen, Junhua Meng, Yong Cheng, Yiming Shi, Gaokai Wang, Jidong Huang, Siyu Zhang, Zhigang Yin, Xingwang Zhang
Summary: This study successfully constructed h-BN/B-Ga2O3 heterostructure by ion beam sputtering deposition method on β-Ga2O3 single crystal substrate. The band alignment of the heterostructure was accurately determined using X-ray photoelectron spectroscopy, revealing valence and conduction band offsets of 0.47 and 1.42 eV, respectively.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
U. O. Uyor, A. P. Popoola, O. M. Popoola, V. S. Aigbodion
Summary: Research attention has been focused on developing polypropylene (PP) based materials with large dielectric constant, mechanical strength, and thermal stability. By using sandwich-structured nanoparticles and compatibilizer, this study successfully enhanced the DSC properties and thermal stability of PP nanocomposites. The addition of functionalized nanoparticles and compatibilizer significantly improved the performance of PP composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Rongchao Chen, Zhihong Li, Ying Shi, Li-Zhi Liu, Yuexiang Wang, Baoliang Lv
Summary: This paper discusses the use of WAXS to characterize the ordered structure in materials, and presents the analytical solution of calibration equations and error estimation matrix. Through error simulation and experimental verification, it is shown that selecting three standard diffraction peaks can effectively reduce the error of angle calibration.
INSTRUMENTATION SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Guangxin Jia, Beibei He, Yu Li, Laishuan Liu, Jiantao Zhao, Baoliang Lv
Summary: In this study, an improved genetic algorithm was used to analyze the thermodynamic equilibrium of the synthesis processes of alkyl glycerol ethers using different alcohols and glycerol. The effects of temperature, pressure, and feed ratio on equilibrium conversion, product selectivity, and equilibrium composition were compared. It was found that the isopropanol + glycerol system had the highest conversion rate into alkyl glycerol ethers.
Article
Chemistry, Multidisciplinary
Huixiang Wang, Xiaobo Ren, Zhong Liu, Baoliang Lv
Summary: The facet of transition metal oxide (TMO) nanocrystals greatly affects their properties, such as heterogeneous catalytic performance, photocatalysis, gas sensing, and electrochemical reactions in chemical conversion processes. By studying the facet-dependent properties through experiments and theoretical calculations, the mechanisms of chemical reactions are accurately explained at the molecular level. Well-defined TMO nanocrystals are crucial for obtaining reliable results, and shape-controlled synthesis of TMO nanocrystals has received significant attention.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jingzhao Ren, Liancheng Wang, Penghui Li, Xiangying Xing, Huixiang Wang, Baoliang Lv
Summary: Linear terminal olefin epoxidation is an important oxidation reaction. In this study, bowl-shaped gamma-Al2O3-supported silver catalysts were synthesized and their catalytic performance in the epoxidation of 1-hexene was investigated. The results showed that the initiator promotes selective oxidation, and the variation in catalytic performance is attributed to the oxidized silver content.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yuexiang Wang, Zhihong Li, Jiao Kong, Liping Chang, Yixin Zhao, Lili Dong, Baoliang Lv
Summary: Coal is an important energy and chemical raw material, and carbonization is an effective way for comprehensive utilization, especially for coal with coking capability. Fractal description can characterize the complex pore structure of raw coal and its carbonization solid products, but the change in the fractal structure of coal with coking capability during carbonization remains unclear.
PHILOSOPHICAL MAGAZINE LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jing Shi, Xiangying Xing, Huixiang Wang, Lin Ge, Haizhen Sun, Baoliang Lv
Summary: In this study, a novel hierarchical structure material of Cu-WO3 NANF was successfully synthesized and exhibited remarkable catalytic activity for the thermal decomposition of AP. This may provide a new idea for the design of hierarchical catalysts and opened up a new field for WO3 applications.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Yuexiang Wang, Zhihong Li, Jiao Kong, Liping Chang, Yixin Zhao, Dongfeng Li, Baoliang Lv
Summary: Carbonization is an effective method for the comprehensive utilization of coal. This study investigates the in situ variation of graphite-like microcrystals, the basic structure of coal macromolecules, during the carbonization process. Through an in situ synchrotron radiation wide-angle X-ray scattering (WAXS) study, the researchers reveal and describe the roadmap of graphite-like microcrystalline structure change during the continuous process of heating and cooling.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Physical
Xiangying Xing, Huixiang Wang, Jing Shi, Penghui Li, Jingzhao Ren, Liancheng Wang, Jianli Zhang, Zhong Liu, Baoliang Lv
Summary: In this study, broken carbon spheres treated with nitric acid were used as a support to anchor WOx in a dynamic solvothermal process to improve its performance in olefin epoxidation. The obtained WOx/C significantly increased the selectivity of 1,2-epoxyhexane and a proposed catalytic mechanism under WOx/C catalysis was reasonably proposed.
Article
Chemistry, Multidisciplinary
Rongchao Chen, Zhihong Li, Ying Shi, Li-Zhi Liu, Dongfeng Li, Yixin Zhao, Baoliang Lv
Summary: In this study, in situ preoxidation of PAN fibers was investigated using wide-angle X-ray scattering and small-angle X-ray scattering techniques on a synchrotron radiation beamline. The structural changes of the fibers' skeleton and pores were revealed, corresponding to different diffraction spots and scattering streaks. The preoxidation process demonstrated distinct stages, and a possible mechanism was analyzed.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Physical
Rong Zhang, Liancheng Wang, Jingzhao Ren, Changchen Hu, Baoliang Lv
Summary: This study obtained experimental evidence on the significant impact of BN shells on hydrogenation by controlling the thickness of the BN overlayers on Co@BN/BN model catalysts. The findings showed that ultra-thin BN shells provided more migrating sites and effectively shortened the hydrogen spillover distance, thereby enhancing the activity of the catalyst. These observations provide new insights into the confined effect on the catalysis process through the precise regulation of BN shell properties.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huan Li, Xu Han, Jingjing Li, Hefang Guo, Baoliang Lv, Fengwei Zhang
Summary: In this study, a novel catalyst ECN@FePc-600-2 with highly accessible single-atom iron site and superior catalytic performance was developed, which can effectively degrade industrial dye wastewater.
Article
Chemistry, Physical
Penghui Li, Junhua Gao, Jing Shi, Huixiang Wang, Xiangying Xing, Jingzhao Ren, Yu Meng, Liancheng Wang, Baoliang Lv
Summary: Moderate oxygen vacancies can enhance linear terminal olefin epoxidation reaction and reduce activation energy, also benefiting cycloolefin and other linear olefin epoxidation reactions.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaobo Ren, Huixiang Wang, Liancheng Wang, Baoliang Lv
Summary: A water-induced stacking process was used to synthesize alpha-Fe2O3 hexagonal nanoplates with controlled exposed facets. The ratio of exposed facets can be adjusted by the dosage of added water. Stacked nanoplates showed enhanced catalytic performance and exhibited opposite activities in visible photocatalysis and CO oxidation.
Article
Energy & Fuels
Zhenzhong Li, Fei Xie, Zhihong Li, Dongfeng Li, Baoliang Lv
Summary: Medium temperature carbonisation of coal is an important method of coal utilisation, which involves heating coal to 700 degrees C without air. Small/wide angle X-ray scattering (SAXS/WAXS) can be used to analyze the pore and carbon matrix structure of coal. A small furnace has been developed for in-situ study of medium temperature carbonisation of coal using simultaneous or separate SAXS and WAXS techniques. Experimental results on a non-caking coal show that the furnace performs well.
INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yicong Xiao, Ruimin Ding, Xinmin Cui, Huixiang Wang, Liancheng Wang, MengChao Wang, Baolong Niu, Baoliang Lv
Summary: Micro-sized Fe3O4 is a practical anode material for industrial Ni-Fe batteries, and the regeneration of hydrophobic mesoporous Fe3O4 sheets from etched industrial Fe3O4 particles can improve electrochemical kinetics and alleviate volume expansion, achieving high capacity and excellent rate capability simultaneously.
SUSTAINABLE ENERGY & FUELS
(2021)