Article
Chemistry, Analytical
Wenjing Pan, Yong Zhang, Sujing Yu, Xiaohua Liu, Dongzhi Zhang
Summary: The alpha-Fe2O3/MoSe2 composite fabricated via a simple hydrothermal route shows high response to H2S gas sensing, with a faster response/recovery rate, outstanding repeatability, and anti-humidity interference at room temperature, as well as excellent selectivity for H2S compared to other potentially interfering gases. This improved performance is attributed to the increased active sites and specific surface area, as well as the formation of n-n heterojunctions at the interface between alpha-Fe2O3 hollow nanospheres and MoSe2 nanoflowers.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Chemical
Marin Tadic, Matjaz Panjan, Yoann Lalatone, Irena Milosevic, Biljana Vucetic Tadic, Jelena Lazovic
Summary: This study investigates the synthesis, phase evolution, crystal structure, magnetic properties, and potential biomedical applications of QUAIPH and hematite nanostructures synthesized by annealing beta-FeOOH nanorods. The results show the relationship between annealing temperature, crystal structure, morphology, and magnetic properties of the synthesized materials, as well as their low cytotoxicity and high MRI relaxivity.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hui Zhang, Jianping Zhang, Yi Chen, Tianze Wu, Mingzhu Lu, Zhenxia Chen, Yu Jia, Yongtai Yang, Yun Ling, Yaming Zhou
Summary: This study investigates the size effect of hollow carbon nanospheres (HCSs) on cellular uptake and in vivo imaging. By preparing HCSs with different sizes and conducting in vitro and in vivo experiments, the researchers found that smaller HCSs exhibit higher cellular uptake and better imaging performance in vivo.
NANOSCALE ADVANCES
(2022)
Article
Materials Science, Ceramics
Bingkun Xu, Qinchuan He, Yiqun Wang, Xuemin Yin
Summary: Hollow porous Ni@SiC nanospheres were successfully constructed by combining a carbothermal reduction preparation strategy and subsequent electroless plating process. The heterogeneous dielectric/magnetic multi-component structure of the nanospheres contributes to their excellent electromagnetic wave absorption properties.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Peng-Fei Cao, Shu-Yi Ma, Rong-Jie Fan
Summary: By utilizing absorbent cotton for carbon doping, α-Fe2O3 microtubules with excellent gas sensing properties were successfully synthesized. Compared to pure α-Fe2O3 nanoparticles, carbon-doped α-Fe2O3 microtubules exhibited unique morphology, abundant oxygen vacancies, and improved sensing performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Haifeng Yang, Chuanhao Xu, Shuaishuai Man, Hebin Bao, Yuting Xie, Xiaodong Li, Guangcheng Yang, Zhiqiang Qiao, Xueming Li
Summary: The effects of hollow carbon nanospheres on the combustion behavior of Al/Fe2O3-based thermite sticks were investigated. It was found that the presence of hollow carbon nanospheres reduced the ignition threshold and enhanced heat transfer efficiency during combustion. The inclusion of hollow carbon nanospheres improved the ignition, acceleration, and steady combustion stages significantly. Modified composites with 4 wt% hollow carbon nanospheres exhibited improved ignition threshold, combustion rate, energy release, and pressure output compared to pristine thermite sticks. Overall, the high porosity structure and heat-flow release of thermite sticks facilitated convective heat transfer and improved combustion behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Liyun Dang, Jinghao Li, Yilong Yang, Fei Xue, Jiyong Hu, Shuaiguo Zhang, Yuan Gao, Mengjiao Liu, Jin'an Zhao
Summary: Hollow Fe2O3@SnO2@HNCS nanospheres are synthesized and exhibit superior lithium storage performance, with a capacity retention of 44.7% after 500 cycles. Kinetic analysis shows that the electrode has an elevated capacitive controlled process and enhanced lithium diffusion coefficient. These findings highlight the potential of constructing nanomaterials with nanosized building blocks and rigid frameworks for high-performance lithium-ion battery anodes.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Priyanka Saha, Rupali Rakshit, Anupam Gorai, Dipika Mandal, Kalyan Mandal
Summary: This study presents a combination of dielectric and magnetic experimental signatures on MgxFe3-xO4 (x = 0.0, 0.2, 0.3, 0.4, and 1.0) nano-hollow spheres (NHSs) magnetic semiconductor system. Interestingly, Mg0.3Fe2.7O4 NHSs exhibit negative refractive index characteristics when they have the highest room temperature dielectric permittivity. The study further investigates the impact of high dipolar fluctuation-assisted back-scattering and strong spin-polaron coupling on the negative dielectric index, as well as the metamagnetic transition in Mg0.3Fe2.7O4 NHSs. The research demonstrates that by utilizing the high room temperature dielectric and magnetic loss, as well as the hollow interior of Mg0.3Fe2.7O4 NHSs, excellent electromagnetic wave absorption efficiency can be achieved for microwave applications.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Zhiwen Long, Luhan Yuan, Chu Shi, Caiqin Wu, Hui Qiao, Keliang Wang
Summary: In this study, a porous Fe2O3 nanorod-decorated hollow carbon nanofiber (HNF) anode was designed to improve the rate performance and cycling stability of lithium-ion batteries. The unique porous hollow structure provided free space that effectively alleviated volume expansion and facilitated the exposure of more active sites during the lithiation/delithiation process, leading to outstanding electrochemical performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Physical
Jiaguang Zheng, Zhendong Yao, Xuezhang Xiao, Xuancheng Wang, Jiahuan He, Man Chen, Hao Cheng, Liuting Zhang, Lixin Chen
Summary: The study revealed that the LMBH@HCNS composites exhibit significantly improved dehydrogenation properties, with high actual dehydrogenation amounts and fast hydrogen desorption rates. After three cycles, the reversible hydrogen storage capacity increased without obvious degradation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Ru Hu, Rui Xu, Zizhu Wang, Junyou Wang, Shenghu Zhou
Summary: In this study, Au nanoparticles were synthesized and encapsulated in hollow porous silica nanospheres (Au@HPSNs). The Au@HPSNs consisted of extremely small Au nanoclusters (-1.3 nm) enclosed in high specific surface area (-800 m2/g) HPSNs. The formation of PEI-PAA@SiO2 core-shell structures was achieved by using electrostatic attraction between poly(acrylic acid) (PAA) anions and protonated poly(ethylenimine) (PEI) in an ethanol-water system. The Au@HPSNs were obtained by soaking PEI-PAA@SiO2 in HAuCl4 solution and subsequent calcination. The Au@HPSNs exhibited highly efficient catalytic activity for 4-nitrophenol (4-NP) reduction with NaBH4, surpassing the current record for heterogeneous Au-based catalysts in 4-NP reduction. The enhanced performance of Au@HPSNs can be attributed to the ultra-fine Au nanoclusters and the small mass transfer hindrance with high specific surface area hollow porous silica.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Zehan Chen, He Jia, Stephanie Hoeppener, Christian Friebe, Jiande Wang, Geraldine Chanteux, Dongjiu Xie, Yan Lu, Alexandru Vlad, Ulrich S. Schubert, Jean-Francois Gohy
Summary: We develop hollow porous silicon nanospheres with a three-dimensional carbon coating and SiC transition interlayer (C@SiC@Si@SiC@C) to address the challenges faced by Si anodes. The synthesized C@SiC@Si@SiC@C anode shows high utilization of the active substance, high measured capacity (3200 mAh g-1), and stable cycling performance (0.7% per cycle decay rate at 0.2C). The superior performances are attributed to the unique structure design and the functional features of carbon coating and SiC transition interlayer.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Analytical
Yumeng Liu, Qingfei Liang, Pingyang Zheng, Gang Li, Jia Liu, Jinniu Zhang, Jianzhi Gao, Hongbing Lu
Summary: Porous raspberry-like CuO hollow nanospheres were prepared by calcining Cu3N nanosphere precursors through a solid-gas displacement reaction involving the Kirkendall effect. The raspberry-like CuO hollow nanospheres had a spherelike microstructure with a rough surface, showing hydrophobic properties. The CuO hollow nanospheres exhibited high response and improved kinetics, as well as good selectivity and repeatability for NO2 sensing, attributed to their increased specific surface area, porosity, and hydrophobic surface.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Shuaijun Hao, Hong Wang, Ruisong Yang, Di Liu, Jiawei Wan, Xiaohua Liu, Qiang Zhang, Xinkuan Chen
Summary: Dandelion-like SiO2@SnO2/alpha-Fe2O3 hollow microspheres were successfully synthesized with mesoporous structure and catalytic effect, showing excellent sensitivity to acetone gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Akbar Mohammadi Zardkhoshoui, Bahareh Ameri, Saied Saeed Hosseiny Davarani
Summary: This paper synthesized NSH-MCS positive electrode with special morphology and demonstrated its excellent performance in hybrid supercapacitors, including high specific capacity, good rate performance, and significant cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Mahsa Saberian, Alireza Nezamzadeh-Ejhieh
Summary: CuO was successfully supported on clinoptilolite nanoparticles (NCP) via ion exchange and calcination, forming CuO-NCP photocatalysts. CuO-NCP exhibited enhanced photocatalytic activity towards tetracycline (TC), and the best degradation performance was achieved under optimal conditions (25 ppm TC solution, pH 4.8, and 0.5 g/L catalyst).
SOLID STATE SCIENCES
(2024)
