Article
Chemistry, Multidisciplinary
Fen Zhao, Yiyu Shi, Leilei Xu, Mindong Chen, Yingying Xue, Cai-E Wu, Jian Qiu, Ge Cheng, Jingxin Xu, Xun Hu
Summary: In this study, Cu2O supported catalysts were prepared and investigated for CO oxidation. The Cu2O/alpha-MnO2 catalyst showed the best catalytic activity. Cu2O-CuO/alpha-MnO2 heterojunction catalysts were further synthesized and the Cu2O-CuO/alpha-MnO2-260 catalyst exhibited the best catalytic performance. Kinetic studies revealed that the apparent activation energy could be greatly reduced due to the excellent redox property and the Cu2O-CuO interface effect.
Article
Materials Science, Multidisciplinary
Xiaohui Ji, Yinghua Wu, Yuanyuan Han, Ben Liang, Yang Cheng, Jinli Zheng, Shaobo Guo, Chen Li, Haitao Xu
Summary: The new antibacterial agent Cu2O/CuO@Ag-tetracycline nano composites exhibit excellent antibacterial properties, with high inhibition rates against Gram-positive bacterium S. aureus, Gram-negative bacterium E. coli, and drug-resistant bacterium T-Salmonella. The inhibition mechanism involves effectively destroying the cell wall of Gram-negative bacteria, entering the cell interior, inhibiting cell respiration, and eventually leading to bacterial rupture and death. These nano composites have wide application prospects in the fields of medical devices and medical materials.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Minjie Ni, Shuai Han, Zhiping Liang, Siwei Liu, Xiangzhao Zhang, Shahid Hussain, Mingsong Wang, Guanjun Qiao, Guiwu Liu
Summary: An optimized mulberry-like Cu2O/CuO nanocomposite was fabricated by hydrothermal method, which showed excellent room-temperature sensitivity to NO2, as well as good selectivity, reproducibility, long-term stability, and non-monotone humidity dependence. This study provides a promising candidate material for room-temperature detection of NO2.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Physical
Zhenhua Zhang, Liping Fan, Weiqi Liao, Feiyue Zhao, Cen Tang, Jing Zhang, Ming Feng, Ji-Qing Lu
Summary: By studying the CO oxidation catalyzed by CeO2-CuO/Cu2O nanocomposites with different CuO structures, it was found that the CuO-CeO2 interfaces in the CeO2-CuO/c-Cu2O (cubes) nanocomposites exhibit higher intrinsic activity, indicating that the active oxygen species originates from CuO. An active 13.2% CeO2-CuO/c-Cu2O(s) catalyst for CO oxidation was achieved on fine Cu2O cubes, possessing a high density of active sites.
JOURNAL OF CATALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Aleksandar Zivkovic, Giuseppe Mallia, Helen E. King, Nora H. de Leeuw, Nicholas M. Harrison
Summary: Investigating the interface between epitaxially aligned CuO and Cu2O to explore more efficient electron and hole transfer in heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Yitong Luo, Baoyan Liang, Zhenguo Zhang, Wangxi Zhang, Jizhou Zhang, Mingli Jiao
Summary: In this study, CuO/Cu2O/Cu ternary composites were successfully prepared using a simple calcination process. The addition of melamine affected the composition of the composites, with higher melamine content leading to decreased Cu and Cu2O content. Furthermore, the photocatalytic performance of the composites was found to be optimal when the melamine content in the raw material was 15%, with almost complete degradation of MB achieved under UV and visible light irradiation with the aid of H2O2.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Chemistry, Physical
Jurin Kanarat, Thanthapatra Bunchuay, Wantana Klysubun, Jonggol Tantirungrotechai
Summary: Chitosan is utilized as a macrochelating ligand for metal active species, while copper oxide-chitosan composites exhibit efficient catalytic performance in the C-H oxidation of alkylarene. The composites have high activity, selectivity, and can convert a wide range of substrates to corresponding ketones with good yields.
Article
Chemistry, Multidisciplinary
Yiyu Shi, Leilei Xu, Mindong Chen, Bo Yang, Ge Cheng, Cai-e Wu, Zhichao Miao, Ning Wang, Xun Hu
Summary: Cu2O-CuO submicron-cubes with heterostructure were synthesized by controlling the calcination temperature, leading to increased catalytic activity for CO oxidation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Huimin Yin, Xiaoxiang Yang, Chang Li, Yan Li, Hongliang Cao, Xin Chen, Lingling Wang
Summary: Novel CuO/Cu2O/NiCo2O4 (CCNC) open-structured three-dimensional composites were synthesized, providing many open channels for ion diffusion and showing good rate performance and cycle stability. The optimized sample exhibited high specific capacitance and maintained capacitance even at higher current densities, making the CCNC composites promising for high-performance supercapacitor applications.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
R. Das, J. Alonso, E. M. Jefremovas, L. Fernandez Barquin, P. K. Ngoc, H. T. Nguyen, D. T. Viet, P. V. Vinh, A. T. Duong
Summary: 11 nm diameter quasi-spherical and single phase CuO/Cu2O nanocomposites with different CuO:Cu2O ratios were synthesized using solvothermal process. The magnetic properties of the nanocomposites were found to be influenced by the presence of Cu2O phase.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Sandeep Kumar Jena, Rajkumar Sadasivam, Gopinath Packirisamy, Pichiah Saravanan
Summary: This study demonstrated the development of PAN/CuO-ZnO nanocomposites with excellent photocatalytic properties through hydrothermal and calcination methods. The nanocomposites obtained through calcination exhibited better optical response and robust electronic structures, leading to higher photocatalytic efficiency.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Shang Gao, Yuli Zhao, Wei Wang, Juan Zhao, Xiao Wang
Summary: In this study, an Au decorated CuO/Cu2O composite was synthesized using a water bath method, and it was found that the material exhibited excellent gas sensing performance. The CuO/Cu2O composite showed enhanced response to TEA gas at 160°C, and the response was further improved by Au decoration. The presence of multi-heterojunctions in the materials contributed to their good sensing performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Islam Shancita, Colton Cagle, Irina Kalish, Pascal Dube, Joseph Abraham, Bradford Hammond, Juliusz Warzywoda, Michelle L. Pantoya
Summary: Surface modification techniques can be used to create effective thermal barrier coatings on metallic substrates, inducing surface chemical reactions to dramatically reduce thermal transport properties. The study demonstrates that surface oxidation reactions can lead to significant alterations in the thermal properties of metal substrates, with reactions occurring within a 20 μm layer.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Dhiman Bhowmick, Hao Sun, Bo Yang, Pinaki Sengupta
Summary: Despite the presence of topological magnon bands in multiple quantum magnets, experiments have not been able to detect the magnon thermal Hall effect in these magnets. Recent research shows that tailored electromagnetic fields can amplify topological magnons in edge states in finite samples. Our study further demonstrates that a uniform electromagnetic field can selectively amplify magnons with finite Berry curvature by breaking the inversion symmetry of a lattice, leading to the generation of bulk topological magnons and the amplification of the thermal Hall effect.
Article
Multidisciplinary Sciences
Yue Li, Jun Fu, Xiaoyu Mao, Chen Chen, Heng Liu, Ming Gong, Hualing Zeng
Summary: While magnetism, hyperferroelectricity, and topological phases have been extensively studied in two-dimensional materials, direct experimental investigation of the bulk photovoltaic effect in such materials remains unexplored. The authors of this study discovered the bulk photovoltaic effect in the 2D ferroelectric CuInP2S6. This work highlights the potential use of ultrathin two-dimensional ferroelectric materials for third-generation photovoltaic cells, surpassing the efficiency limits set by traditional p-n junction or Schottky barrier interfaces.
NATURE COMMUNICATIONS
(2021)
