Article
Energy & Fuels
Huangqing Zhang, Xiaohong Liu, Yudong Chen, Huifang Kuang, Hongyu Zhen, Wengong Zhang, Hong Chen, Qidan Ling
Summary: Designing and constructing an ideal architecture is crucial for achieving high-performance energy storage systems. Core-shell heterostructure materials have been widely researched due to their excellent performance in energy storage applications. However, there have been few reports on core-shell heterostructures containing sandwich-like nano-array materials. In this study, sandwich-like NiCo-PPy-layered double hydroxide (NiCo-PPy-LDH) nanosheets with polypyrrole (PPy) as the intercalation agent were vertically anchored on a 3D cross-linked graphene nanoscroll (GNS) skeleton. The resulting NiCo-PPy-LDH@GNS composite exhibited impressive electrochemical properties, with a specific capacitance of 2561 F center dot g-1 and 82% capacitance retention at 10 A center dot g-1. The superior performance of the composite can be attributed to the novel heterostructure, which enhances the synergistic effect between NiCo-LDHs, GNSs, and PPy.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Hongwu Zhao, Jicai Liang, Qifeng Zheng
Summary: In this work, a core-shell nanostructure NiO-x@Co0.5Fe0.5P/CC was fabricated and served as a bifunctional electrocatalytic electrode for overall water splitting. The optimal NiO-3@Co0.5Fe0.5P/CC catalytic electrode exhibited admirable catalytic performance for both HER and OER in alkaline solution. The water electrolysis device based on this catalytic electrode showed low voltage requirement and excellent durability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
S. Gopalakrishnan, G. Paulraj, Mathan K. Eswaran, Avijeet Ray, Nirpendra Singh, K. Jeganathan
Summary: Interface of an electrocatalyst with a photoactive semiconductor surface can enhance the photocathode performance for solar water reduction reaction. In this study, a core-shell heterostructure photocathode consisting of vanadium disulfide (VS2) as a 2D layered electrocatalyst directly deposited on silicon nanowire (Si NWs) surface was realized for efficient hydrogen evolution under solar irradiation. The photocathode exhibited saturated photocurrent density and high photoconversion efficiency, and produced hydrogen gas at a high rate. The high performance was attributed to the generation of high density of electron-hole pairs and separation of photocarriers with extended lifetime.
Article
Engineering, Environmental
Zhenxing Yang, Cuihong Chen, Bo Li, Yufeng Zheng, Xiangmei Liu, Jie Shen, Yu Zhang, Shuilin Wu
Summary: By constructing a core-shell interface electric field and enhancing oxygen adsorption ability, MoS2@PBMOF can generate high temperature and abundant ROS under light irradiation to kill bacteria, while promoting the healing of damaged tissues.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ki Hoon Shin, Ji Yong Bae, Su Yong Lee, Docheon Ahn, Jiung Cho, Jongwon Yoon, Woong-Ki Hong, Jung Inn Sohn
Summary: In this study, stress engineering on MIT in VO2 nanobeams is achieved through core-shell heterostructures, enabling uniform axial stress distribution and control of phase transition pathways. This research can lead to better engineering of phase transitions in strongly correlated materials, providing the beneficial effect of suppressing inhomogeneities during the MIT process.
APPLIED MATERIALS TODAY
(2021)
Article
Chemistry, Multidisciplinary
Siyi Yan, Qiaohui Yue, Jiangang Ma
Summary: The method enables fabrication of Ag-Cu2O core-shell nanowires by using pulsed ultraviolet laser light, inducing rapid and controllable growth of Cu2O on the Ag NWs. The good photocatalytic properties of the core-shell NWs are related to enhanced visible light absorption from localized surface plasmon resonance and improved electron-hole separation efficiency from the Ag-Cu2O Schottky junction.
Article
Chemistry, Physical
Akira Yamakata, Junie Jhon M. Vequizo, Takafumi Ogawa, Kosaku Kato, Shoya Tsuboi, Naohiro Furutani, Masahiro Ohtsuka, Shunsuke Muto, Akihide Kuwabara, Yoshihisa Sakata
Summary: The dual doping of Zn and Ca in polycrystalline beta-Ga2O3 photocatalysts effectively enhances the photocatalytic activity, achieving a quantum efficiency of 71% under 254 nm illumination. The induced concentration gradient of the dopants inhibits recombination and assists trapped electrons to diffuse from bulk to surface, accelerating surface reactions. This cooperative effect provides an attractive strategy to enhance photocatalytic activity, applicable to a variety of photocatalysts.
Article
Chemistry, Physical
S. A. Beknalkar, A. M. Teli, N. S. Harale, J. C. Shin, P. S. Patil
Summary: In this study, IrO2@Mn3O4 nanocomposite was designed and synthesized using two-step simple and scalable chemical routes, and its structural, morphological, and energy storage performance were investigated. The optimized electrode showed superior specific capacitance and voltage performance, while the solid-state symmetric device exhibited high energy density and power output, capable of lighting up an LED. The combination of 2D transition metal oxides with high conductivity 1D metal oxides shows promise for future electrode research.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Dianjun Chi, Yan Ma, Huixue Fang, Rong Chen, Yu Chen, Bingrui Liu, Shengjun Liu, Kui Zhang
Summary: Metal-organic framework (MOF)-based photocatalysts have gained attention as a solution to reduce energy-related problems. In this study, a defective NH2-MIL-125@Ni (OH)(2) photocatalyst was synthesized by etching the NH2-MIL-125 with Ni2+. The introduction of defects increased the number of active sites, and the Ni (OH)(2) cocatalyst enhanced the separation efficiency of photo-generated electron-hole pairs. Under visible light for 4 hours, the H-2 production rate reached 502.32 mmol g(-1).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
Miao Yan, Kang Liang, Dongyuan Zhao, Biao Kong
Summary: The integration of well-designed micro-nanomotors with diverse functional systems offers opportunities for diverse functionalization interfaces and augmented or new properties in a wide variety of applications. Core-shell structured MNM systems play an important role in applications, providing improved propulsion performance, stability, non-toxicity, multi-functionality, and dispersibility, with the potential for enhanced or new physiochemical properties through hetero-interfaces within the structure.
Article
Chemistry, Inorganic & Nuclear
Reza Taheri-Ledari, Nasibe Tarinsun, Fateme Sadat Qazi, Leili Heidari, Mahdi Saeidirad, Fatemeh Ganjali, Fatemeh Ansari, Fereshte Hassanzadeh-Afruzi, Ali Maleki
Summary: This study presents an efficient antimicrobial drug delivery system using iron oxide magnetic nanoparticles (Fe3O4 NPs) coated with an MOF-199 network. The system showed enhanced antibacterial effects of vancomycin (VAN) with a lower dosage of drug, as confirmed by cell adhesion experiments. The prepared cargo [VAN@Fe3O4/MOF-199]BCD-Gn demonstrated high antimicrobial potency compared to the individual VAN, indicating its potential for antimicrobial applications.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Rongchen Shen, Kelin He, Aiping Zhang, Neng Li, Yun Hau Ng, Peng Zhang, Jun Hu, Xin Li
Summary: The shell-thickness-controlled Ni3C@Ni/g-C3N4 photocatalysts were designed with intimate Schottky junctions using an in situ high-temperature transformation strategy. Optimized Ni shell-layer thickness of 15 nm achieved the best visible-light photocatalytic H2-production performance. The intimate Schottky-junctions hinder rapid charge recombination, increase reactive sites, and boost catalytic kinetics, leading to shellthickness-dependent hydrogen evolution.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Dapeng Luo, Yi Yong, Jiang Hou, Weiguang Guo, Hengbo Liu, Xue Zhao, Jingrong Xiang, Nima Zongzong, Yuqi Han, Minglei Yan
Summary: In this study, a hierarchical NiCo2O4@NiFe-layered double hydroxide (NiCo2O4@NiFe-LDH) heterostructure was successfully synthesized and investigated as a high-performance positive electrode for supercapacitors. The unique structure provides high conductivity and a large surface area, leading to excellent electrochemical performance including high areal specific capacitance, small charge-transfer resistance, and superior cycling stability.
Article
Physics, Applied
Guozhang Dai, Yang Xiang, Xindi Mo, Zhixing Xiao, Hua Yuan, Jiaxing Wan, Biao Liu, Junliang Yang
Summary: In this study, a CdS@CsPbBr3 core-shell microwire heterojunction was successfully fabricated and utilized for the production of a photodetector. The CdS@CsPbBr3 heterojunction exhibited improved performance parameters compared to a bare CdS photodetector, which can be attributed to the formation of a core-shell structure and the reduction of defect states.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Houqiang Zhao, Jiemei Wang, Yanwei Sui, Fuxiang Wei, Jiqiu Qi, Qingkun Meng, Yaojian Ren, Yezeng He
Summary: The study successfully designed and synthesized a three-dimensional heterostructure C@MnNiCo-OH/Ni3S2 core-shell material with superior electrochemical performance, including high specific capacitance and cycling stability. The core-shell structure helps to increase the number of active sites, while providing charge transfer rate and redox reactions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)