Article
Chemistry, Physical
Chengbao Liu, Dongchen Shen, Zhengkai Tu, Song Li
Summary: Li+ doping significantly improves the hydrogen storage performance of metal-organic frameworks (MOFs). This study demonstrates that Li+-doped MIL-100(Fe)/GO composite shows higher hydrogen uptake and more accessible adsorption sites compared to Li+-doped MIL-100(Fe), resulting in enhanced hydrogen storage capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Physics, Applied
Yuji Noguchi, Ryotaro Inoue, Hiroki Matsuo
Summary: Experimental study showed that Fe doping significantly affects the photovoltaic properties of BaTiO3 single crystal, with the DW-PV effect having a more significant impact on overall behavior than the bulk-PV effect, despite the small volume fraction of the DW region. The estimated local electric field in the DW region reaches several hundred kVcm(-1), three orders of magnitude higher than the effective field inside the domains.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Mingjun Zhu, Ganghua Zhang, Lianna Zhai, Jianwu Cao, ShaSha Li, Tao Zeng
Summary: A novel core-shell-structured crystalline-BaTiO3/amorphous-BaTiO3-x/crystalline-CdS composite nanocubes were prepared with the aim of improving photocatalytic activity for water splitting. Basic characterization techniques confirmed the quality of their crystal structure, morphology, and chemical components, while UV-Vis-NIR measurements validated extended visible-light absorbance. Photoelectrochemical tests showed that the composite nanocubes exhibited higher performance compared to pure BaTiO3, CdS and BaTiO3/BaTiO3-x films, suggesting a new potential route for designing cost-effective, highly stable and efficient photocatalysts.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Zurong Zhu, Lu Zhang, Pinan Liu, Chengli Liu, Jialuo Ai, Youzhun Fan, Senwei Liu, Jinxia Zhai, Guanghui Bai, Chengyun Ning, Zhengao Wang
Summary: Excessive artificial electromagnetic radiation poses significant health risks and disrupts military equipment. Carbon materials, especially metal-organic frameworks (MOFs), offer promise due to low density, chemical stability, and high conductivity. In this study, we synthesized a novel multicore-shell Fe3O4@Fe@C composite with exceptional electromagnetic wave absorption, enabling multiple electromagnetic wave routes, strong interfacial polarization, and magnetic-dielectric synergy.
Article
Materials Science, Ceramics
He Liming, Xu Juhua, Zhang Nan, Xue Shanshan, Wang Xiaolong, Jin Quan
Summary: In this study, a hollow multi-shelled structured (HoMSs) BaTiO3/Fe3O4 composite was designed and prepared. Compared to BaTiO3 powder/Fe3O4, the composite showed higher reflection loss and wider effective absorption bandwidth. The special structure resulted in multiple scattering reflection and oriented polarization, while the heterogeneous interface between the composite materials enhanced the interface polarization effect, further improving the dielectric loss capacity.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Rongwei Zheng, Ruifan Tan, Yali Lv, Xiaoling Mou, Junqiao Qian, Ronghe Lin, Ping Fang, Weidong Kan
Summary: Iron-based materials are commonly used in Fenton chemistry for wastewater treatment. However, the complexity of their composition and rich chemistry of iron and/or oxides make it difficult to understand the active sites and working mechanism. In this study, iron oxide model systems were designed using a conventional precipitation method and H-2 reduction treatment, including Fe@Fe3O4, Fe-0, and Fe3O4 nanoparticles of different sizes. These materials were tested for their Fenton activity in the decomposition of methyl orange. The Fe@Fe3O4 core-shell structures exhibited higher activity compared to other Fe3O4-rich nanoparticles, possibly due to the presence of both metallic iron and oxygen vacancy.
Article
Physics, Applied
G. Venkat, C. D. W. Cox, Z. Zhou, N. Leo, C. J. Kinane, A. J. Caruana, K. Morrison
Summary: In this study, an increase in Fe nanodroplets formed by pulsed laser deposition was shown to enhance the measured spin Seebeck coefficient in Fe3O4/Pt bilayer films. Among the four films deposited simultaneously from a highly textured target, the bilayer with higher droplet density exhibited a 64% increase in the measured spin Seebeck coefficient.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
Xue Guo, Feifei Xiao, Jiao Li, Hua Zhang, Qiangqiang Hu, Guochang Li, Haibin Sun
Summary: Fe-doped SiCN composite fibers were prepared through thermally-induced polymerization, with the microstructures playing a crucial role in the electromagnetic wave absorption properties. The results showed excellent absorption performance of the Fe-doped composite fibers.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Xuehong Wang, Guangrui Liu, Di Zhang, Shuo Han, Jie Yin, Jiatong Jiang, Wenpin Wang, Zhongcheng Li
Summary: In this study, the electronic structure of MoO2 was adjusted by constructing N-doped carbon sheets supported P-Fe3O4-MoO2 nanosheets. The results showed that P-Fe3O4-MoO2/NC exhibited superior oxidation activity in freshwater and seawater electrolysis at low cell voltages compared to the commercial catalyst RuO2.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Min Fu, Xin Lin, Lingui Tan, Ping Zhang, Haijiao Xie, Zetian Tao
Summary: PBCF-x (0.1 < x < 0.4) polymorphs (PrBa(Co1-xFex)2O5+d) with dual phases of cubic Pr0.5Ba0.5Co1-xFexO3_d and tetragonal PrBa(Co1-xFex)2O5+d are produced through sol-gel method. The co-generation of dual phases results in abundant hetero-interfaces, demonstrating high oxygen adsorption and dissociation ability. The existence of hetero-interfaces promotes oxygen reduction reaction activity (ORR), essential for improving cathode performance of proton-conducting solid oxide fuel cells (H-SOFCs). A self-assembled dual-phase cathode proves to be an effective approach for developing high-performing H-SOFCs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Guohua Dong, Tian Wang, Haixia Liu, Yijun Zhang, Yanan Zhao, Zhongqiang Hu, Wei Ren, Zuo-Guang Ye, Keqing Shi, Ziyao Zhou, Ming Liu, Jingye Pan
Summary: In this study, Fe3O4/BaTiO3 nanopillar composites were successfully constructed to achieve magnetoelectric coupling effect. Well-ordered BaTiO3 nanopillar arrays were prepared through template-assisted pulsed laser deposition, and the Fe3O4 layer was coated on BaTiO3 nanopillar arrays using atomic layer deposition. The research results showed a significant thermally driven magnetoelectric coupling coefficient near the phase transition of BaTiO3.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Zimeng Hu, Vladimir Koval, Yajun Yue, Man Zhang, Chenglong Jia, Isaac Abrahams, Haixue Yan
Summary: The dielectric, ferroelectric and magnetic properties of novel multiferroics derived from BaTi1-x(Fe0.5Nb0.5)xO3 ceramics were investigated. The coexistence of ferroelectric long-range ordering and antiferromagnetism was observed. The results indicate that the antiferromagnetic order is established through an indirect super-exchange interaction between adjacent Fe ions in the x = 0.07 composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Yongqing He, Guimao Fu, Dengyu He, Qisong Shi, Yanjun Chen
Summary: In this paper, Eu3+ doped PAN/BaTiO3 piezoelectric composite fibers were prepared by electrostatic spinning. The addition of filler improves the piezoelectric properties of PAN, resulting in high sensitivity and dielectric constant of the fiber membrane. The prepared pressure sensor demonstrates excellent voltage and current output. These results suggest that Eu3+ doped PAN/BaTiO3 piezoelectric composite fiber membranes have great potential in flexible pressure sensors, wearable self-powered devices, and optoelectronic devices.
Article
Chemistry, Physical
Junjie Su, Hai Chen, Jianlong Wang, Qi Yang
Summary: The bimetallic nanocomposite Ni-4/Fe@Fe3O4 showed excellent performance in the reductive dechlorination of carbon tetrachloride (CT), with high removal efficiency achieved within a short time. It displayed good reusability and stability, and can degrade CT through various pathways, following pseudo first-order kinetics. This nanocomposite has great potential for applications in CT degradation from aqueous solutions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Yiping Fan, Xingming Ning, Qi Zhang, Huihuan Zhao, Jia Liu, Peiyao Du, Xiaoquan Lu
Summary: This study demonstrates a successful modulation of PEC performance by using a function-tunable strategy, achieving a significant increase in photocurrent density by depositing Ni-doped CoPi on a BV substrate. Moreover, similar excellent performance can also be achieved on an alpha-Fe2O3 photoanode.
Article
Engineering, Electrical & Electronic
Amit Kumar, Deepak Kumar Jarwal, Ashwini Kumar Mishra, Smrity Ratan, Chandan Kumar, Rishibrind Kumar Upadhyay, Bratindranath Mukherjee, Satyabrata Jit
IEEE PHOTONICS TECHNOLOGY LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Smrity Ratan, Chandan Kumar, Amit Kumar, Deepak Kumar Jarwal, Ashwini Kumar Mishra, Rishibrind Kumar Upadhyay, Abhinav Pratap Singh, Satyabrata Jit
MICRO & NANO LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Rishibrind Kumar Upadhyay, Abhinav Pratap Singh, Deepchandra Upadhyay, Deepak Kumar Jarwal, Chandan Kumar, Satyabrata Jit
IEEE ELECTRON DEVICE LETTERS
(2020)
Article
Physics, Condensed Matter
Deepak Kumar Jarwal, Amit Kumar, Ashwini Kumar Mishra, Smrity Ratan, Rishibrind Kumar Upadhyay, Chandan Kumar, Bratindranath Mukherjee, Satyabrata Jit
SUPERLATTICES AND MICROSTRUCTURES
(2020)
Article
Chemistry, Physical
Prince Kumar Singh, Kamalaksha Baral, Sanjay Kumar, Manas Ranjan Tripathy, Ashish Kumar Singh, Rishibrind Kumar Upadhyay, Sweta Chander, Satyabrata Jit
Summary: An analytical model for current-voltage characteristics of a source pocket engineered stacked gate oxide SiO2/HfO(2) cylindrical gate all-around tunnel field effect transistor (CG TFET) has been developed in this work. The optimization of source pocket length is aimed at achieving higher ON-current and minimal subthreshold swing. The model takes into consideration the surface potential in different regions, tunneling current calculation, and the effects of source/channel and channel/drain depletion regions for better accuracy, which has been verified with numerical data from ATLAS (TM) 3D TCAD simulator.
Article
Engineering, Electrical & Electronic
Deep Chandra Upadhyay, Rishibrind Kumar Upadhyay, Satyabrata Jit
Summary: This study presents a hybrid organic-inorganic UV-Visible photodetector based on PCDTBT: PCBM: CdSe tetrapod-shaped nanocrystals nanocomposites, with FTO-coated glass substrate. The device exhibits high responsivity and detectivity, suitable for low light intensity UV and visible light.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Abhinav Pratap Singh, Rishibrind Kumar Upadhyay, Satyabrata Jit
Summary: This article reports a p-type TIPS-pentacene and n-type colloidal ZnO quantum dots (ODs) organic/inorganic heterojunction-based ultraviolet (UV) photodetector, which exhibits high responsivity, detectivity, and external quantum efficiency (EQE).
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Rishibrind Kumar Upadhyay, Satyabrata Jit
Summary: This paper presents an inverted structure UV-visible-Near Infrared (NIR) broadband photodetector featuring ZnO Nanoparticles (NPs)/CH3NH3PbI3/PTB7/MoO3/Ag. The ZnO NPs layer serves as the electron transport layer (ETL), CH3NH3PbI3 functions as the active layer, PTB7 acts as the hole transport layer (HTL), and MoO3 is utilized to optimize the recombination current in the photodetector structure. The proposed device exhibits desirable optical and electrical characteristics, with a maximum photoresponsivity of -0.36 A/W, detectivity of -7.8x1012 Jones, and external quantum efficiency (EQE) of -83.67% under a bias voltage of -2 V. The rise time and fall time are measured as 81 ms and 75 ms, respectively.
Article
Materials Science, Multidisciplinary
Vivek Kumar, Rishibrind Kumar Upadhyay, Daraksha Bano, Subhash Chandra, Pradeep Kumar Yadav, Deepak Kumar, Satyabrata Jit, Syed Hadi Hasan
Summary: A stable supramolecular Cu-TMA metallogel was synthesized using Copper (II) acetate monohydrate and trimesic acid (TMA) as a gelator. The metallogels showed high storage modulus and were characterized by FT-IR, HR-MS, FESEM, and TEM. The metallogel exhibited a self-assembled fibrous structure and demonstrated high thermal stability. Furthermore, the semiconducting properties of the metallogel were investigated, and a Schottky diode with high rectification ratio was fabricated, showing potential for future optoelectronic devices.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Deep Chandra Upadhyay, Rishibrind Kumar Upadhyay, Abhinav Pratap Singh, Satyabrata Jit
Summary: In this study, an inorganic-organic hybrid ternary blend nanocomposite was prepared and characterized, and its application in a photodetector device was demonstrated. The fabricated device showed stable photoresponse and high white light photosensitivity, making it a strong candidate for low-cost solution processed wideband photodetectors.
PROCEEDINGS OF 3RD IEEE CONFERENCE ON VLSI DEVICE, CIRCUIT AND SYSTEM (IEEE VLSI DCS 2022)
(2022)
Article
Chemistry, Multidisciplinary
Pradeep Kumar Yadav, Rishibrind Kumar Upadhyay, Deepak Kumar, Daraksha Bano, Subhash Chandra, Satyabrata Jit, Syed Hadi Hasan
Summary: This study successfully prepared fluorescent green carbon quantum dots using latex of Ficus benghalensis and polyethyleneimine, and applied them for tyrosine detection and Schottky barrier diode fabrication.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Vivek Kumar, Rishibrind Kumar Upadhyay, Daraksha Bano, Subhash Chandra, Deepak Kumar, Satyabrata Jit, Syed Hadi Hasan
Summary: In this study, a stable supramolecular Cu(ii)-metallogel was successfully synthesized and its mechanical properties, aggregation morphology, structural morphology, elemental composition, crystalline behavior, thermal stability, and optical properties were explored, leading to the successful fabrication of a Schottky diode.
NEW JOURNAL OF CHEMISTRY
(2021)
Proceedings Paper
Physics, Condensed Matter
Abhinav Pratap Singh, Rishibrind Kumar Upadhyay, Deepchandra Upadhyay, Amit Kumar, Satyabrata Jit
DAE SOLID STATE PHYSICS SYMPOSIUM 2019
(2020)
Proceedings Paper
Physics, Condensed Matter
Rishibrind Kumar Upadhyay, Abhinav Pratap Singh, Deepchandra Upadhyay, Amit Kumar, Satyabrata Jit
DAE SOLID STATE PHYSICS SYMPOSIUM 2019
(2020)
Article
Engineering, Electrical & Electronic
Deep Chandra Upadhyay, Rishibrind Kumar Upadhyay, Abhinav Pratap Singh, Satyabrata Jit
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2020)
