Article
Chemistry, Physical
Na Chen, Xue-Feng Pan, Zhen-Jie Guan, Ya-Jing Zhang, Kang-Jun Wang, Jian-Tang Jiang
Summary: This study focuses on the rational design of hierarchical heterogeneous structured Fe3O4 for enhanced electromagnetic wave absorption (EMA). By incorporating TiO2 and SiO2 particles as intercalations anchor in Fe3O4 framework, the composites exhibit excellent EMA performance with enhanced absorption bandwidth and intensity. This work provides a novel pathway for fabricating high-performance EMA absorbers.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ensi Cao, Linjie Wu, Yongjia Zhang, Li Sun, Zhichao Yu, Zhongquan Nie
Summary: Efficient and reliable acetone gas sensors are crucial for human health and safety. The acetone sensing properties of In2O3 materials can be improved through morphology control and heterostructure engineering.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Lu Fan, Hao Liu, Chunxia Gao, Peizhi Zhu
Summary: Magnetic hydroxyapatite (HA) / Fe3O4 microspheres with an average size of about 5 μm were easily prepared using commercially available low-cost Fe3O4 nanoparticles. The crystallinity and structure of the synthesized HA/Fe3O4 were analyzed, and the biocompatibility and bioactivity were evaluated. These magnetic HA/Fe3O4 microspheres with good biocompatibility hold great potential for biomedical applications.
Article
Chemistry, Multidisciplinary
Xiaoqian Ai, Shun Yan, Ligang Ma
Summary: In this study, a hierarchical ZnO microsphere precursor was prepared using a hydrothermal method, and a controllable morphology ZnO catalyst was produced through annealing at different temperatures. The catalyst annealed at 400 degrees C showed the best photocatalytic activity for the degradation of dye molecules, and its structure was confirmed to be a 2D cellular network composed of two-dimensional nanosheets through electron microscopy measurements.
Article
Materials Science, Ceramics
Jingzheng Xu, Hanzhuo Zhang, Zhimin Fu, Yihan Ling
Summary: In this study, spinel CuBi2O4 microspheres with hierarchical structures were synthesized by a hydrothermal process, and their application in gas sensing was investigated. The experimental results showed that the CuBi2O4 microspheres exhibited excellent crystallinity and high purity, and demonstrated high sensitivity and gas selectivity in formaldehyde detection.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Huiqi Zheng, Jin Chen, Meidan Que, Tai Yang, Zhikang Liu, Weihua Cai, Lingfu Yang, Xinwei Liu, Yanjun Li, Xiaofeng Yang, Yuzhao Ma, Gangqiang Zhu
Summary: The coupling of the piezoelectric effect and photocatalytic process promoted the separation of photogenerated carriers, thus increasing the piezo-photocatalytic activity. BaTiO3 nanoparticles were prepared on the Ti3C2Tx surface, and the obtained BaTiO3/Ti3C2Tx piezo-photocatalysts exhibited rapid electron transfer and a wide visible light response range. These results demonstrate that coupling piezoelectric and photocatalytic properties has broad application prospects in water pollution control.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Ceramics
Fuzhou Mao, Xiankai Fan, Lan Long, Yang Li, Han Chen, Wei Zhou
Summary: In this work, a three-dimensional hierarchical CNTs/VO2 composite microsphere was successfully synthesized using an ultrasonic atomization process. The addition of CNTs improved impedance matching and provided multiple attenuation modes. The highly conductive CNTs enhanced conductivity and the heterogeneous interfaces between CNTs and VO2 generated strong polarization loss. The 3D structure not only benefited the stability of the structure but also extended the paths of electromagnetic wave reflection and scattering, resulting in increased energy absorption.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Zichen Zheng, Kewei Liu, Kaichun Xu, Chao Zhang
Summary: This study reports the application of hierarchical Sb2WO6 microspheres in gas sensing, showing improved sensing performance compared to regular Sb2WO6 microspheres at room temperature. The improved performance is mainly attributed to the finer microstructure and larger specific surface area of the hierarchical Sb2WO6 microspheres, providing more adsorption sites. Additionally, the sensor was able to recognize the deterioration of cooked rice and ready-to-eat rice.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Wenli Xu, Wenda Zhong, Chenfan Yang, Rong Zhao, Jing Wu, Xuanke Li, Nianjun Yang
Summary: In this study, a strategy of electron redistribution by introducing Ni sites onto the surface of Fe3O4 is proposed to improve its activity as a bifunctional catalyst. The results demonstrate that the Ni/Fe3O4 catalyst with introduced Ni sites exhibits remarkable bifunctional activity and stability in water dissociation.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Konglin Wu, Min Ling, Peiyuan Zeng, Liang Zhang, Tao Wu, Pingli Guan, Weng-Chon Cheong, Zheng Chen, Zhen Fang, Xianwen Wei
Summary: Self-assembled Fe3O4 hierarchical microspheres were successfully synthesized using a one-pot synchronous reduction-self-assembling hydrothermal method without the need for additional reductants or additives. The prepared Fe3O4 microspheres exhibited high performance as anode materials for lithium-ion batteries, showing specific capacity of over 1000 mA h g(-1) after 270 cycles at 0.5 A g(-1). These microspheres also demonstrated good cycling stability and reversible performance, while also being used as efficient and magnetically recyclable catalysts for hydrogenation reactions.
SCIENCE CHINA-MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Guanhua Zhang, Xiaojing Li, Huaizhi Liu, Donghai Wei
Summary: The encapsulation of tiny Fe3O4 nanoparticles into double layers N-doped hollow carbon nanotubes (NHCNT/Fe3O4) improved the cycling stability and rate performance of the lithium-ion battery anode. The excellent electrochemical performance exhibited by the NHCNT/Fe3O4 composites material provides innovative ideas for the design of future anode materials.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Energy & Fuels
Dapeng Luo, Yanbin Chen, Jinping Zou, Zhaohui Wei, Lei Zhang, Xiaoyun Ye, Qianting Wang, Li -An Ma
Summary: Porous NiCoMo-based ternary nanosheet arrays were successfully synthesized using a simple hydrothermal process combined with electrochemical assisted template etching method. The resulting composite material exhibits excellent electrochemical properties, thanks to the porous electrode structure formed by etching ZnO template and the enrichment of Zn2+.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Analytical
Guanyu Yao, Jun Yu, Hao Wu, Zhongzhou Li, Wenjing Zou, Huichao Zhu, Zhengxing Huang, Hui Huang, Zhenan Tang
Summary: Antimony-doped tungsten oxide nanosheet-assembled microspheres were synthesized via hydrothermal method, showing excellent sensitivity, fast response, and low detection limit for ammonia at near room temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Yan Yang, Yuzhu Li, Kecheng Liu, Ke Zhang, Suying Jin, Yan Bao, Yuxin Fan, Zhizheng Yang, Ruixue Zhang, Bo Jin, Guoqiang Liu
Summary: In this study, an ultrathin N-doped carbon coating was deposited onto hierarchical porous TiNb2O7 microspheres, leading to enhanced rate performance and cycling stability in lithium-ion batteries. TiNb2O7@N-doped carbon microspheres show promising potential as a negative electrode for high-power LIBs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Qian Zhang, Jiebin Wang, Yude Zhang, Juntao Chen
Summary: In this study, hierarchical porous kaolinite microsphere (HPKS) with three-dimensional structure was successfully fabricated as an efficient and environmentally friendly adsorbent for wastewater remediation. The synthesized HPKS exhibited excellent adsorption capacity for methylene blue (MB) and high selectivity for cationic MB dyes. The adsorption kinetic experiment results fit well with the pseudo-second-order model, indicating a fast adsorption rate. The sorption isotherm study revealed the chemisorption of electrostatic attraction between the cationic MB molecules and the negative charged surfaces of HPKS. Furthermore, HPKS showed high stability and recyclability through calcination without obvious diminishment of adsorption capacity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Ruikai Wang, Haiyan Li, Zhichao Hao, Ting Feng, Yanxin Li, Bohua Dong, Lixin Cao
Summary: The recombination of photogenerated carriers and sluggish surface oxidation kinetics were effectively inhibited in the Zn1-xMgxO-modified CuWO4 photoanode, resulting in enhanced photoelectrochemical water oxidation. The heterojunction transformation between Zn1-xMgxO and CuWO4 and the local surface plasmon resonance (LSPR) of plasma metal (Ag) facilitated the extraction of carriers and promoted the water oxidation reaction. Moreover, the surface states trapped/stored holes and reduced charge transfer resistance, leading to improved charge transfer. The optimized CuWO4/Zn0.7Mg0.3O/Ag photoanode demonstrated significant advancements in photocurrent density, electrochemical impedance, and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yanxin Li, Shimiao Tang, Hongbin Sheng, Can Li, Haiyan Li, Bohua Dong, Lixin Cao
Summary: Constructing heterojunctions and loading co-catalysts are effective means to enhance the performance of photoelectrochemical (PEC) water splitting. In this study, NiCo-LFO/WO3 heterojunction is constructed, which not only enhances the separation of photogenerated carriers, but also improves the conductivity and modulates the surface state density at the catalyst-electrolyte interface, leading to a significant improvement in PEC performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Thermodynamics
Xue-Ting Wu, Cheng-Hui Xia, Shi-Lin Xia, You-Ming Lu, Xiao-Gang Lu
Summary: The composition-dependent interdiffusivities in the fcc Co-Ni-Ta alloys at 1373 K and 1473 K were determined using a new numerical inverse scheme combining 2D simulations with diffusion triple experiments. This approach reduced the experimental efforts by analyzing only one diffusion triple at each temperature and covering a wider composition range than diffusion couples. The deduced interdiffusivities were validated by reproducing experimental composition profiles and comparing them with traditional methods.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Thermodynamics
Genfeng Shang, Cheng-Hui Xia, Zhen-Zhi Liu, Xiao-Gang Lu
Summary: In this study, the Co-Cr-Fe system was thermodynamically assessed using the CALPHAD approach, first-principles calculations, and experimental data. Diffusion couples of fcc Co-Cr-Fe annealed at 1273 and 1473K were scanned using EPMA to obtain composition profiles, and the interdiffusion coefficients were extracted using the Whittle-Green method. The atomic mobilities of Co, Cr, and Fe in the fcc Co-Cr-Fe alloys were assessed using DICTRA software based on the interdiffusion coefficients and thermodynamic parameters, and the calculated results were consistent with the experimental data.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Chemistry, Physical
Yan Li, Yanxin Li, Ruonan Wang, Chenghui Xia, Haiyan Li, Lixin Cao, Bohua Dong
Summary: Multimetallic systems have high catalytic activity due to the ability to change electronic and crystal structures. However, the development of multimetallic catalysts is limited by the complexity of homogeneous catalyst preparation and the understanding of synergistic interactions. In this study, atomically thin quinary CNWFVOx nanobelts were synthesized as an OER electrocatalyst, showing excellent catalytic performance with low overpotentials and high stability. The synergistic effect of multiple metals and the amorphous ultra-thin structure significantly enhanced the catalyst's activity and kinetics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Elise Prin, Chenghui Xia, Yu-Ho Won, Eunjoo Jang, Serguei V. Goupalov, Philippe Tamarat, Brahim Lounis
Summary: We used frequency- and time-resolved magneto-photoluminescence spectroscopy to investigate the optical properties of single zinc-blende InP/ZnSe/ZnS nanocrystals (NCs). Spectral fingerprints of the band-edge exciton fine structure were obtained and identified, revealing the presence of a ground dark exciton level 0(L) below the bright exciton doublet ±1(L) due to shape anisotropy. These findings match well with a model accounting for the InP core's shape anisotropy. Furthermore, the spectroscopic measurements provide highly sensitive information on the NC morphologies, showing highly uniform shapes with deviations of less than 3% from perfect sphericity.
Article
Chemistry, Multidisciplinary
Yanxin Li, Xiaoyan Zhang, Lin Liu, Hongbin Sheng, Can Li, Lixin Cao, Haiyan Li, Chenghui Xia, Bohua Dong
Summary: In this study, a hierarchical nanostructured electrocatalyst with enriched amorphous/crystalline interfaces was reported for high-efficiency alkaline hydrogen evolution reaction (HER). The electrocatalyst consisted of amorphous/crystalline (Co, Ni)(11)(HPO3)(8)(OH)(6) homogeneous hierarchical structure with an ultra-low doped Pt. Due to the structural flexibility of the amorphous component, extremely low Pt was stably doped on it via a simple two-phase hydrothermal method. The obtained catalyst exhibited an exceptionally high mass activity (39.1 mA mu g(Pt)(-1)) at 70 mV.
Article
Chemistry, Multidisciplinary
Hongbin Sheng, Hao Qu, Biao Zeng, Yanxin Li, Chenghui Xia, Can Li, Lixin Cao, Bohua Dong
Summary: The rational design of efficient and cost-effective electrocatalysts for oxygen evolution reaction (OER) is crucial for clean energy technologies. A new approach is proposed to design electrocatalysts with abundant active sites by utilizing crystalline/amorphous heterostructure. The Fe-NiCoHPi electrocatalyst with cauliflower-like structure exhibits remarkable activity and unceasing durability, making it a promising candidate for sustainable energy devices.
Article
Thermodynamics
Xue-Ting Wu, Lina Azhati, Cheng-Hui Xia, Xiao-Gang Lu
Summary: In this study, the composition-dependent interdiffusivity matrices in the fcc Ni-Al-Ta alloys at 1373K and 1473K were efficiently deduced using a newly developed two-dimensional (2D) inverse scheme based on two diffusion triples. The interdiffusivities were determined from point and one-dimensional (1D) diffusion path to 2D composition region, requiring less experimental efforts and reproducing well the measured 2D composition profiles. The interdiffusivities inferred from the inverse scheme were compared with those extracted by the traditional methods, showing fairly consistent results.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Chemistry, Physical
Hao Guo, Guangyao Wang, Haiyan Li, Chenghui Xia, Bohua Dong, Lixin Cao
Summary: This study selected ZnIn2S4 as a photocatalyst and compounded it with a novel high-entropy metal phosphide (HEMP) catalyst to design a direct Z-scheme HEMP/ZnIn2S4 heterojunction, which demonstrated outstanding photocatalytic activity and stability for hydrogen evolution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Lifeng Zhang, Baohua Ding, Zhichao Hao, Haiyan Li, Chenghui Xia, Zhibin Zhu, Bohua Dong, Lixin Cao
Summary: The Fe2TiO5 photoelectrode is limited in photoelectrochemical field (PEC) due to slow charge transfer kinetics, short carrier diffusion distances, and low separation efficiency. To overcome these limitations, Fe2TiO5/NiCo-LDH photoelectrodes with dual roles of co-catalyst and heterojunction were constructed. The addition of the co-catalyst modulates the surface state of the Fe2TiO5-based photoanode and enhances the OER photocurrent density by 3.4 folds compared to pristine Fe2TiO5. This work also demonstrates the enhanced performance of Fe2TiO5/NiCo-LDH photoanodes in the sulphur oxidation reaction (SOR), showing a 2-fold increase in sulphur oxidation photocurrent density compared to pristine Fe2TiO5.
JOURNAL OF CATALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Xue-Ting Wu, Cheng-Hui Xia, Xiao-Gang Lu
Summary: In this study, a 2D inverse scheme was developed to efficiently deduce the composition-dependent interdiffusivity matrices of a Co-Al-Ta diffusion triple in the fcc phase. The interdiffusivities deduced from the 2D inverse scheme showed expected agreements with those extracted using the traditional Sauer-Freise method. Additionally, visual presentations of the interdiffusion fluxes and the shift of the Kirkendall plane in the 2D diffusion zone were provided. The resulting 2D mapping revealed new appearances of non-uniform but curved Kirkendall planes, which were well explained by the calculated diffusion variables.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Fenghuan Zhao, Qingguo Bai, Chenghui Xia, Junjie Hao, Marion Gayot, Jean-Pierre Delville, Marie-Helene Delville
Summary: We propose a method for synthesizing well-controlled core-shell nanoheterodimers (NHDs) based on single bimetallic Au@M (M = Au, Ag, Pd, Pt) nanodots (BNDs) grown on TiO2 nanoparticles (NPs). The process involves a two-step laser-assisted deposition. The first step uses a focused UV laser to nucleate and grow a single core nanodot (ND) with quantitatively controlled size. In the second step, a new metal precursor is added to the Au-TiO2 NHDs and a second laser deposition takes place on the first gold NDs. The synthesized NHDs exhibit different growth patterns depending on the metals involved.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Qian Chen, Ruonan Wang, Lin Liu, Zhiming Guan, Zhibin Zhu, Lixin Cao, Bohua Dong
Summary: In this study, a stable and active acidic OER catalyst, Ru/RuO2@C, was developed. The carbon layer acts as a protective layer against catalyst dissolution, while the presence of grain boundaries enhances the catalytic activity. This catalyst exhibits outstanding activity and stability, and has the potential to serve as an efficient anode catalyst in electrolyzers for water splitting.
