Article
Chemistry, Physical
Sh O. Omarov, D. A. Sladkovskiy, K. D. Martinson, M. Peurla, A. Aho, D. Yu Murzin, V. Popkov
Summary: The study investigated the effect of the initial state of ZrO2 on the properties of Ni/ZrO2 catalysts for hydrogen production in the steam reforming of glycerol. It was found that the mutual influence of NiO and ZrO2 affected the phase composition, pore structure, and reducibility of the catalysts. Different catalytic behaviors were explained by the influence of the initial form of the support on the size, morphology of Ni particles, and the support thermal stability.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Multidisciplinary
Luyu Zhu, Dongdong Xu, Chenglin Yi
Summary: One-dimensional RhCo alloy nanowires with an ultrathin thickness and abundant defect sites were prepared using a nanoconfined attachment growth route in an aqueous solution. Thanks to their unique structure and alloy composition, these nanowires exhibited superior activity and stability in alkaline hydrogen evolution electrocatalysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Yu Wang, Minzhang Li, Rajendran Ramachandran, Haiquan Shan, Qian Chen, Anxin Luo, Fei Wang, Zong-Xiang Xu
Summary: This study reports a novel nanocomposite based on octamethyl-substituted nickel(II) phthalocyanine as the electrode material for all-solid-state supercapacitors. The nanocomposite provides rapid electron and electrolyte ion transport pathways, excellent structural stability, and high-capacity activity. The optimized weight ratio of the composite exhibits the highest specific capacitance and impressive cycling stability. In addition, flexible carbon cloth enhances the energy density and capacitance retention of the device, making it suitable for flexible electronics applications.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Weichao Xie, Yijiang Liu, Hongbiao Chen, Mei Yang, Bei Liu, Huaming Li
Summary: In this work, a bifunctional electrocatalyst FeNi-NCNT is proposed for zinc-air batteries. The catalyst demonstrates excellent activity and long cycle life, making it suitable for the production of rechargeable zinc-air batteries with high specific capacity and good performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Zhenyu Li, Jiefei Li, Kunhong Jiang, Songyuan Yuan, Dangkai Yu, Hang Wei, Zhiming Shi, Xiaotian Li, Haibin Chu
Summary: The PdCoNi/NCNTs catalyst, incorporating Co and Ni, exhibits enhanced catalytic activity and stability, achieving high performance and durability as an air cathode catalyst in lithium-air battery applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xingyi Lin, Min Huang, Hong Zhu, Chunsheng Wan, Dalin Li, Lilong Jiang
Summary: In this study, Ni-Ga/Al2O3 alloy catalysts with different Ga/Ni atomic ratios were prepared and tested for methane decomposition. It was found that alloying Ni with a suitable amount of Ga effectively enhances the catalyst life and carbon yield, and influences the morphology and size of carbon nanotubes. The findings provide guidelines for the control of carbon morphology and geometric size in methane decomposition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Eliane Dahdah, Jane Estephane, Cedric Gennequin, Bilal El Khoury, Antoine Aboukais, Edmond Abi-Aad, Samer Aouad
Summary: The physico-chemical properties of Ni, Ru, Ru-Ni monoclinic ZrO2 catalysts were studied and their catalytic activities in the glycerol steam reforming reaction were compared. Different characterization techniques were used to analyze the catalysts. The results showed that the combination of Ru and Ni on zirconia led to improved catalytic performance and stability.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Multidisciplinary
Dewu Lin, Yue Yu, Lanying Li, Mingzhi Zou, Jin Zhang
Summary: The article describes a method for synthesizing high-purity semiconducting single-walled carbon nanotube arrays using a bicomponent catalyst of Au and ZrO2, which creates a localized etching zone to improve the purity and performance of carbon nanotubes.
Article
Chemistry, Multidisciplinary
Qiaoling Kang, Dawei Lai, Wenyin Tang, Qingyi Lu, Feng Gao
Summary: NiFe alloy catalysts are increasingly studied for their low cost and excellent OER catalytic activity, but the identification of active sites and OER mechanism remains controversial. This review discusses strategies to optimize active sites using amorphous structures and dual-metal single atoms, aiming to shed light on the exploration of novel electrocatalysts in the field of energy.
Article
Nanoscience & Nanotechnology
Zijun Shi, Xuan Xu, China Peng Jing, Baocang Liu, Jun Zhang
Summary: An inventive technique was used to produce a composite electrode consisting of a well-aligned nickel-cobalt alloy nanoparticles-encapsulated N-doped carbon nanotubes with porous structure and good conductivity as a substrate, onto which nanosheets of nickel-cobalt layered double hydroxide were grown. This composite electrode demonstrated high capacitance, long-term stability, and high Coulombic efficiency, making it a potential approach for high-performance supercapacitors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Tong Song, Xiao Zhang, Cong Xie, Ping Yang
Summary: In this paper, Ni nanoparticles embedded N-doped carbon nanotubes (CNTs) were decorated on superior thin g-C3N4 nanosheets as a co-catalyst for enhanced photocatalytic performance. The Ni-decorated CNTs (NiCNTs) demonstrated admirable conductivity and unique one-dimensional structure, generating more active sites and efficient charge transfer. The N-doped CNTs promoted charge separation, while Ni nanoparticles trapped photogenerated electrons for photoreduction reaction. The g-C3N4/NiCNTs composites showed excellent hydrogen generation rate and pollutant removal efficiency.
Article
Materials Science, Multidisciplinary
Yonghua Sun, Youjie Rong, Ya Zhao, Yuyu Zhao, Ruiqiang Hang, Xiaohong Yao, Paul K. Chu
Summary: The electrochemical stability of Ni-Ti-O nanoporous layers grown on equiatomic NiTi alloy was assessed by immersion in water and phosphate buffered saline, showing no significant change in morphology, composition, and structure even after 60 days. The layers also exhibited retained corrosion resistance, antibacterial ability, and cytocompatibility, indicating their potential as coatings on NiTi biomedical implants.
Article
Chemistry, Multidisciplinary
Cordelia Zimmerer, Frank Simon, Sascha Putzke, Astrid Drechsler, Andreas Janke, Beate Krause
Summary: This study presents a bio-inspired, environmentally friendly technique for metallization of single-walled carbon nanotubes (SWCNTs) using polydopamine (PDA) as an adhesion promoter and electroless plating with nickel. The results showed that prior oxidation of SWCNTs significantly improved the distribution of PDA and nickel. The PDA layer acted as a p-dopant, increasing the Seebeck coefficient of SWCNTs. However, the subsequent metallization decreased the Seebeck coefficient, indicating a need for further optimization.
Article
Materials Science, Multidisciplinary
Tokihiro Hotta, Tso-Fu Mark Chang, Chun-Yi Chen, Hidekazu Sawae, Yu Imada, Masanori Mizoguchi, Osamu Kudo, Ryu Maeda, Masato Sone
Summary: This study evaluated the micro-compression characteristic of an electrolessly plated Ni-P alloy and the sample size effect, finding that the influence of sample size on mechanical properties was not significant and observing the impact of heat treatment on micro-pillar strength.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Nada F. Atta, Soha A. Abdel Gawad, Ahmed Galal, Afaf Abdel Razik, Asmaa R. M. El-Gohary
Summary: An electrochemical sensor based on ILC, CNTs, and Fe-Ni alloy nanoparticles was developed for detecting H2O2 in human blood serum. The sensor showed high sensitivity and stability, with a wide range of H2O2 concentrations and low detection limit in serum samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)