Article
Nanoscience & Nanotechnology
Kuan Tian, Xiao-yan Yang, Xue-ning Ren, Yi-xiang Huang, Hua-Yao Li, Yang-hai Gui
Summary: A hierarchical nanostructured Ni0.7Zn0.3O material with hollow porous microspheres was prepared by deriving microspheres from Zn/Ni-based metal-organic frameworks. This nanostructured material exhibited high sensitivity and selectivity towards aniline, with a fast response/recovery speed. It can serve as an excellent gas-sensing material for detecting aniline, and the method used to prepare this material can be widely applied to design and synthesize other bimetallic oxides with hollow and hierarchical nanostructures.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Kuan Tian, Xiao-yan Yang, Xue-ning Ren, Yi-xiang Huang, Hua-Yao Li, Yang-hai Gui
Summary: In this study, hierarchical nanostructured rocksalt Ni0.7Zn0.3O solid solution with hollow porous microspheres was successfully prepared from Zn/Ni-based metal-organic frameworks. The resulting nanostructured Ni0.7Zn0.3O spheres exhibited a high sensitivity and selectivity towards aniline at a low concentration. This method can be used to design and synthesize bimetallic oxides with hollow and hierarchical nanostructures.
ACS APPLIED NANO MATERIALS
(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, Physical
Qun-Yan Li, Shou-De Han, Jun-Guo Liu, Lu-Yao Sun, Ya-Li Wang, Qi Wei, Su -Ping Cui
Summary: In this study, a novel type of hollow hierarchical porous TiO2/Ag composite microsphere with tunable microstructure was successfully prepared. Compared with hollow hierarchical porous TiO2 microspheres, the composite microspheres showed a shift in excitation wavelength towards visible light direction, improved response range and light utilization rate. The optimal addition amount of Ti and Ag resulted in specific surface area of 177 m2/g, pore volume of 0.37 cm3/g, and primary and secondary pore sizes of 4.04 nm and 7.74 nm, respectively. They exhibited the highest photocatalytic activity towards 365 nm and 395 nm ultraviolet light, with degradation rates of methyl orange solution reaching 96.84% and 98.65%, respectively. Their excellent performance was attributed to the unique combination of hierarchical pores and hollow structures, as well as the synergistic effect of Ag and TiO2.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Analytical
Yang Chen, Lingmin Yu, Hongbo Du, Chonghao Hu, Nan Liu, Shuai Ma, Yu Jia, Xinhui Fan
Summary: TiO2 is proven to be a promising material for detecting various hazardous gases at high temperatures, and a strategy to synthesize flower-like TiO2 microspheres assembled by nanosheets has been reported. The selective adsorption of NH3 on TiO2 (001) indicates a stronger interaction in the NH3-TiO2 system, providing useful gas sensing materials for high-performance room temperature NH3 sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Ceramics
Baoqing Han, Hairong Wang, Wanying Yang, Jiuhong Wang, Xueyong Wei
Summary: The research indicates that 1 mol% Pt-decorated In2O3 shows significantly enhanced response to isoprene gas, with good selectivity, repeatability, and long-term stability, making it suitable for large-scale rapid breath detection of chronic liver disease.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Shravanti Joshi, Shyam Tonde, Uday Wakhure, Deepak Bornare, Aniruddha Chatterjee, Kaleemuddin Syed, Manorama V. Sunkara
Summary: This study reports on the use of hierarchical calcium titanate microspheres as acetone sensors. The microspheres showed superior sensitivity, selectivity, long-term stability, and fast response kinetics.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Tingting Xu, Xin Wei, Fangbo Zhao, Guiling Wang, Zhaopeng Deng, Jing Zhao, Jiaxin Yao
Summary: CdS hierarchical microspheres were prepared and applied as ethanol gas sensors, exhibiting excellent performance including enhanced sensitivity, good repeatability and stability, and fast response/recovery time. The hierarchical microspheres also demonstrated outstanding humidity resistance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Hong Wang, Yuehao Fu, Xiaohua Liu, Ruisong Yang, Yu Hu, Di Liu, Jiawei Wan, Zhipeng Zeng
Summary: The snowball flower-like g-C3N4/ZnFe2O4 mesoporous hollow microspheres, composed of 2D g-C3N4 nanolayers loaded onto the surface of ZnFe2O4 hollow microspheres, were successfully synthesized by a simple solid phase reaction. The concentration of g-C3N4 was found to affect the structure, morphology, and gas-sensing performance of the g-C3N4/ZnFe2O4 composites. The sensor based on g-C3N4/ZnFe2O4-15 hollow microspheres exhibited excellent sensing properties for TEA, including high response, fast response-recovery time, and outstanding stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Shichao Wang, Xiaohu Wang, Gaoqun Qiao, Xiaoyan Chen, Xinzhen Wang, Hongzhi Cui
Summary: Core-double shell-structured ZnO@In2O3@ZnO microspheres were successfully synthesized by decorating In2O3 and ZnO on the surface of ZnO hollow microspheres, exhibiting excellent gas sensing properties with high response to gases like ethanol, especially at low concentrations. This superior gas sensing performance was attributed to its high specific surface area, abundant surface defects, and radial electronic modulation mechanism.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Ceramics
Cuixia Cheng, Fang Chen, Yinfang Cheng, Guosong Lai
Summary: In this study, hierarchical hollow microspheres of Bi2MoO6 were prepared and applied as an anode for lithium-ion batteries for the first time, showing superior electrochemical performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Zicheng Zheng, Nan Jiang, Rong Liang, Hanwen Chi, Jingmin Wu, Jie Jiang, Zhizhen Ye, Liping Zhu
Summary: Pt-decorated In2O3 hollow microspheres were prepared using a template and reflux method, with the Pt decoration significantly enhancing the response of the In2O3-based sensor towards acetone. The addition of Pt led to an increase in specific surface area and the availability of active sites for the target gas, resulting in alterations to the energy band structure. The proposed sensor has high sensitivity and can detect low concentrations of acetone, making it suitable for applications such as monitoring dietary intake, managing diabetes, and inspecting industrial processes.
Article
Biochemistry & Molecular Biology
Vanessa R. A. Ferreira, Manuel A. Azenha, Carlos M. Pereira, Antonio F. Silva
Summary: This study demonstrated for the first time the possibility of generating organically modified hollow TiO2 microspheres via a simple sol-gel synthesis, and made significant progress in selective adsorption and molecular imprinting.
Article
Materials Science, Multidisciplinary
Kai-Di Wu, Jin-Yong Xu, Marc Debliquy, Chao Zhang
Summary: CuFe2O4 HMANs were synthesized with nanosheets assembled in hollow microspheres, and the annealing temperature significantly influenced their gas sensing characteristics. The CuFe2O4 HMANs exhibited excellent sensing properties towards low-concentration NH3 and TMA, showing promising potential for real-time monitoring applications.
Article
Chemistry, Analytical
Tingting Wang, Liang Cheng
Summary: The hollow TiO2-SnO2-TiO2 composite nanofibers were successfully synthesized using a two-step method, showing excellent gas sensing performance and high selectivity at low operating temperatures, attributed to their hollow structure and n-n heterojunction.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Jinli Huang, Wenda Zhou, Xingfang Luo, Yan Ding, Dongquan Peng, Mingyue Chen, Hang Zhou, Ce Hu, Cailei Yuan, Shouguo Wang
Summary: It has been proven that introducing alternating magnetic field (AMF) can effectively enhance the catalytic performance of magnetic nanoparticles (NPs) electrocatalysts. This study proposes a feasible design to confine monodispersed ultra-small NiSe2_X NPs in an amorphous carbon matrix and demonstrates that under AMF, the confined NPs experience spin flips that generate magnetic heating, leading to a significant improvement in hydrogen evolution reaction performance. This work provides new ideas for the preparation of ultra-small monodispersed NPs electrocatalysts that can utilize AMF to enhance catalytic performance, which is crucial for accelerating clean energy production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Wei Zeng, Zhenzhen Jiang, Xunguo Gong, Ce Hu, Xingfang Luo, Wen Lei, Cailei Yuan
Summary: This study demonstrates the implementation of atomic magnetic heating on specific single atoms in Gd@MoS2 single-atom catalysts (SACs) using high-frequency alternating magnetic field (AMF) technology, resulting in significant improvement in catalytic kinetics and hydrogen evolution reaction efficiency. The promotion in catalyst activity is attributed to spin flip in Gd single atoms leading to atomic magnetic heating effect on catalytic active center, as supported by theoretical calculations and electrochemical experiments.
Article
Chemistry, Multidisciplinary
Dongquan Peng, Ce Hu, Xingfang Luo, Jinli Huang, Yan Ding, Wenda Zhou, Hang Zhou, Yong Yang, Ting Yu, Wen Lei, Cailei Yuan
Summary: This study successfully confined EC-reconstructed NiFe/NiFeOOH core/shell nanoparticles in a highly conductive carbon matrix, leading to significant improvement in oxygen evolution reaction (OER) electrocatalytic activity. Furthermore, the OER efficiency was further enhanced through the functionalization of superparamagnetic NiFe cores using magnetic heating effect.
Article
Physics, Applied
Yong Yang, Yuan Liu, Shenman Yao, Wufei Gong, Yan Liang, Ting Yu, Cailei Yuan
Summary: The development of non-noble metal-based bifunctional electrocatalysts for overall water splitting is urgent. In this study, a self-supported rare earth Ce-doped Ni5P4 porous nanosheets array is designed as an efficient bifunctional electrocatalyst, showing a competitive overall water splitting potential and high catalytic activity. The introduction of Ce reduces charge transfer resistance and increases active sites of Ni5P4, while DFT theoretical calculations reveal the regulation of Ce doping on the d-band center and adsorption of reaction intermediates.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Zhenzhen Jiang, Ce Hu, Xingfang Luo, Xunguo Gong, Wei Zeng, Chengwu Zou, Hang Zhou, Wenda Zhou, Ting Yu, Wen Lei, Cailei Yuan
Summary: Further uprating the catalytic activities of diatomic active sites while maintaining the atomic loading and diatomic coordination by external stimulation is a promising way to improve diatomic site catalysts. The NiFe@MoS2 DASCs treated with external high-frequency alternating magnetic field exhibit a superior cell voltage of 1.576 V and a current density of 10 mA cm(-2) in alkaline water electrolysis compared to those without magnetic field treatment (1.652 V). The selective magnetic heating of bifunctional diatomic active site proposed in this work can open up new possibilities for the design of highly efficient catalysts for various energy-related reactions.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Linyi Wu, Yipei Li, Binghua Zhou, Jian Liu, Deliang Cheng, Shien Guo, Keng Xu, Cailei Yuan, Mingxi Wang, Gan Jet Hong Melvin, Josue Ortiz-Medina, Sajjad Ali, Teng Yang, Yoong Ahm Kim, Zhipeng Wang
Summary: Coupling graphene-based materials with SiC nanostructures is an effective strategy for improving photocatalytic CO2 reduction performance. In this study, vertical graphene (VG) sheets were synthesized on SiC nanowires derived from rice husks to form the VG@SiC/C composite. The resulting composite exhibited enhanced photocatalytic CO2 reduction, yielding CO and CH4 with yields of 25.5 and 2.3 μmol g-1 h-1, respectively, which is the highest CO yield among SiC-based photocatalysts. Defective VG sheets promoted sunlight absorption, CO2 adsorption and activation, electron-hole pair separation, and overall photocatalyst activity, leading to high CO2 reduction yield and selectivity.
Article
Engineering, Multidisciplinary
Fanyan Zeng, Baoquan Liu, Yang Pan, Shile Chu, Guo Cheng, Tao Lu, Zhi Chen, Zhaohui Hou
Summary: A durable yolk-shell architecture with sub-nanometric amorphous vanadium-oxide (V-O) clusters bonded in N-doped carbon nanospheres (A-VOxC/N-C) is developed for sodium-ion batteries (SIBs). The composite exhibits a high reversible capacity, high-rate capability, and long cyclic stability. The study provides insights into the design of sub-nanometric clusters and their potential applications in alkaline ion batteries.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Chemical
Shile Chu, Tao Lu, Fanyan Zeng, Baoquan Liu, Yaohui Qu, Yang Pan
Summary: A composite (MoO2@Mo2C/C) with improved conductivity and reinforced structural stability is designed by self-polymerization and two-step calcination. It effectively alleviates the volume expansion and structural collapse of MoO2 particles, leading to significant improvement in the effective capacity in long cycles. After 8000 cycles, the reversible capacity of the composite increases from 126.2 to 419.1 mAh g-1, with a capacity retention of up to 332.4%.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Songqing Zhang, Han Wang, Wenwu Pan, Huijia Luo, Yongling Ren, Yujun Liang, Jin Tan, Cailei Yuan, Wen Lei
Summary: In this study, Sb2Se3 nanotubes were grown by chemical vapor deposition and their novel applications in polarization-sensitive near-infrared photodetectors were investigated. The grown Sb2Se3 nanotubes exhibited high crystal quality and specific dimensions. The fabricated singular Sb2Se3 nanotube-based photodetector showed a wide spectral response and excellent performance under the illumination of near-infrared light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yong Yang, Shenman Yao, Wufei Gong, Yan Liang, Ting Yu, Cailei Yuan
Summary: A hierarchical Z-scheme heterostructure microsphere of MoS2/SnO2 is designed and prepared, showing outstanding NO2 sensing performance at room temperature under the excitation of a low-power LED light. The Z-scheme heterostructure promotes the separation of photogenerated carriers and provides abundant active sites for gas sensing reactions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Mingyue Chen, Wenda Zhou, Kun Ye, Cailei Yuan, Mengyuan Zhu, Hao Yu, Hongzhou Yang, He Huang, Yanfei Wu, Jingyan Zhang, Xinqi Zheng, Jianxin Shen, Xiao Wang, Shouguo Wang
Summary: This study successfully confines monodisperse 1T-VSe2 nanoparticles in an amorphous carbon matrix using a facile pulsed laser deposition (PLD) method combined with rapid thermal annealing (RTA) treatment. With external magnetic fields of 800 mT stimulation, these confined 1T-VSe2 nanoparticles exhibit highly efficient oxygen evolution reaction (OER) catalytic activity and remarkable durability. The experimental results demonstrate that magnetic fields can facilitate the surface charge transfer dynamics of 1T-VSe2, and modify the adsorption-free energy of *OOH, thus improving the intrinsic activity of the catalysts. This work realizes the application of ferromagnetic VSe2 electrocatalyst in highly efficient spin-dependent OER kinetics and promotes the application of transition metal chalcogenides (TMCs) in external magnetic field-assisted electrocatalysis.
Article
Engineering, Environmental
Wufei Gong, Shenman Yao, Yan Liang, Bin Chen, Yanxing Yang, Xingfang Luo, Ting Yu, Cailei Yuan, Yong Yang
Summary: Light irradiation is a promising strategy for room temperature sensing in semiconductor gas sensors, but the recombination rate of photo-generated carriers and poor visible light response of conventional sensing materials limits performance improvement. This study successfully developed a novel Z-scheme NiO/Bi2MoO6 heterostructure that showed excellent room temperature gas response towards ether under visible light irradiation. The heterostructure improved carrier separation and ether adsorption, and the visible light response of NiO/Bi2MoO6 enhanced light utilization. The in-situ construction of the heterostructure array also minimized problems associated with traditional thick film devices. This work provides important insights into the room temperature sensing performance and gas sensing mechanism of Z-scheme heterostructures.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Xiaobo Chen, Yipei Li, Mingliang He, Binghua Zhou, Deliang Cheng, Shien Guo, Keng Xu, Cailei Yuan, Mingxi Wang, Hironori Ogata, Gan Jet Hong Melvin, Yoong Ahm Kim, Mauricio Terrones, Morinobu Endo, Zhipeng Wang
Summary: Vertical graphene (VG) has unique three-dimensional structures and excellent physicochemical properties, making it a promising material for supercapacitors. In this study, large-scale VG films were synthesized on flexible substrates, and a novel battery-like supercapacitor (BSCs) was designed using VG on Ni foil (VG@Ni) as a binder-free electrode in KOH electrolyte with redox additives. The VG@Ni electrodes exhibited high areal capacitance, coulombic efficiency, and cycling stability. The BSCs assembled with VG@Ni electrodes showed impressive areal capacitance, energy density, and power density, thanks to the special features and properties of VG materials, high electronic conductivity of the binder-free VG@Ni electrode, and synergistic effects with the redox electrolyte.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Baoquan Liu, Shuxiao Hu, Yang Pan, Fanyan Zeng, Shengyu Zhou, Yingte Zheng, Yongcun Ma, Dui Ma, Shenglian Luo
Summary: Amorphous modulation is an effective strategy for achieving high energy/power density in sodium-ion hybrid capacitors (SIHCs). In this study, atomically amorphous Nb-O/N clusters with asymmetric coordination were created in N-doped hollow carbon shells, resulting in improved charge transport paths and reaction kinetics, as well as enhanced storage properties of the composite.
