Article
Chemistry, Physical
Yongqiang Gao, Mengtao Wang, Guofan Zhang
Summary: The introduction of Ca2+ to modify the surface property of heterogenite improves its sulfidization effect by creating more oxygen vacancies and enhancing the adsorption capacity of Co sites on the heterogenite surface.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Nadeem Asghar Khan, Iqbal Ahmad, Naghmana Rashid, Muhammad Nadeem Zafar, Farooq Khurum Shehzad, Zahid Ullah, Anwar Ul-Hamid, Muhammad Faizan Nazar, Muhammad Junaid, Muhammad Faheem, Syed Salman Shafqat, Uzma Jabeen, Alaa Dahshan
Summary: This study synthesized Co3O4, Co9S8, and their heterostructure Co3O4/Co9S8 as water oxidation catalysts, and found that the Co3O4/Co9S8 heterostructure showed excellent electrocatalytic activity at low onset potential, along with good long-term stability and a low Tafel slope.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Thabang Calvin Lebepe, Oluwatobi Samuel Oluwafemi
Summary: This study reports the synthesis of Polyvidone (PVP)-modified graphene oxide (GO)-coated gold nanorods (AuNRs) and evaluates their thermal and culture medium stability and photothermal profiling. The results show that the GO-based nanocomposites are stable in all culture mediums and exhibit higher photothermal conversion efficiency. Additionally, the nanocomposites also demonstrate good thermal stability.
Article
Engineering, Environmental
Weidong Zhang, Claude Descorme, Jose Luis Valverde, Anne Giroir-Fendler
Summary: By modifying cobalt oxides with different Y/(Co+Y) molar ratios, this study found that proper Y incorporation can enhance catalytic activity by improving oxide properties, while excessive Y doping leads to decreased activity. A volcano-type relationship between Y content and catalytic performance was established. The 1% Y-Co catalyst showed superior catalytic activity and stability, making it a promising candidate for hydrocarbon emissions elimination.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Kai Pei, Yucun Zhou, Yong Ding, Kang Xu, Hua Zhang, Wei Yuan, Kotaro Sasaki, YongMan Choi, Meilin Liu, Yu Chen
Summary: The study found that coating the LSCF cathode with a BCO thin film layer can significantly enhance the activity and CO2 tolerance of solid oxide fuel cells. Experimental results demonstrate that under certain conditions, cathodes with BCO coatings outperform those without coatings in terms of performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Xiang Wang, Junshan Li, Qian Xue, Xu Han, Congcong Xing, Zhifu Liang, Pablo Guardia, Yong Zuo, Ruifeng Du, Lluis Balcells, Jordi Arbiol, Jordi Llorca, Xueqiang Qi, Andreu Cabot
Summary: This study presents the synthesis of cobalt-iron oxide nanosheets with controlled amounts of SO42- anionic groups, which exhibit excellent performance in the electrochemical oxygen evolution reaction (OER). The synthesis involves the use of a cobalt-based zeolitic imidazolate framework as a template and a source of iron and sulfate. Through a diffusion-controlled process, the structure of the framework is etched, forming porous assemblies of nanosheets. Iron ions partially replace cobalt, and sulfate ions are anchored on the material surface. The optimized material demonstrates outstanding OER activity, with a low overpotential and high stability.
Article
Multidisciplinary Sciences
Sai Zhang, Yuxuan Liu, Mingkai Zhang, Yuanyuan Ma, Jun Hu, Yongquan Qu
Summary: The carbon neutrality initiative has stimulated the development of sustainable methodologies for hydrogen generation and safe storage. The dual-active sites of Pt single-atoms and frustrated Lewis pairs on porous nanorods of CeO2 enable efficient and additive-free generation of H2 with low CO production through reforming of methanol and water.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Hubert Ronduda, Magdalena Zybert, Wojciech Patkowski, Andrzej Ostrowski, Przemyslaw Jodlowski, Damian Szymanski, Wioletta Rarog-Pilecka
Summary: Ammonia is a promising hydrogen source and energy carrier, and the development of new and cheaper catalysts for ammonia synthesis is crucial. The catalyst's activity can be adjusted by varying the support composition, allowing for control of surface adsorption properties. Among the studied cobalt catalysts, the one supported on mixed MgO-La2O3 oxide with a Mg/La molar ratio of 7 demonstrated the highest activity and stability for ammonia synthesis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wei Wang, Yunlei Zhong, Xinyu Zhang, Sainan Zhu, Yourong Tao, Yanxin Zhang, Hongsen Zhu, Yifei Zhang, Xingcai Wu, Guo Hong
Summary: Surface self-reconstruction by electrochemical activation is an effective strategy for enhancing OER performance of transition metal compounds. Co-2(OH)(3)Cl microspheres exhibit enhanced OER performance due to etching of lattice Cl- after CV cycles, and further enhancement is achieved with Fe modification. Fe doping facilitates easier etching of lattice Cl- and improved oxygen species absorption, resulting in superior OER activity and stability compared to commercial RuO2.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Bilal, Amna Altaf, Ehmen Bint-E-Khalid, Hafiza Komal Zafar, Nimrah Tahir, Ayman Nafady, Md A. Wahab, Syed Shoaib Ahmad Shah, Tayyaba Najam, Manzar Sohail
Summary: Developing an efficient and non-precious bifunctional catalyst for water splitting and organic effluent degradation is a challenging task. This study presents a highly efficient bifunctional nanocatalyst based on NiCo2O4, synthesized using a simple co-precipitation method. The optimized catalyst exhibited excellent catalytic activity for the electrochemical oxygen evolution reaction (OER) and simultaneous methylene blue (MB) dye degradation. The results suggest that this catalyst holds great promise for addressing the challenges of wastewater treatment and energy generation.
Article
Chemistry, Physical
Jing Wang, Chao Cai, Yian Wang, Xuming Yang, Duojie Wu, Yuanmin Zhu, Menghao Li, Meng Gu, Minhua Shao
Summary: The electrochemical nitrate reduction reaction (NITRR) is an attractive method for ammonia synthesis. By designing ultrathin CoOx nanosheets with abundant surface oxygen as catalysts, the efficiency of NITRR can be increased, hydrogen evolution reaction can be suppressed, and the yield of ammonia can be enhanced.
Article
Materials Science, Multidisciplinary
K. Poshan Kumar Reddy, Mohammad Rameez, Tsai-Te Wang, Kuangye Wang, Eric Yan-Ru Lin, Ming-Chang Lin, Eric Wei-Guang Diau, Chen-Hsiung Hung, Yun-Lun Chueh, Krishna P. Pande, Po-Tsung Lee
Summary: This study utilizes screen-printed perovskite solar cells for direct water splitting and incorporates copper-nickel-cobalt oxide catalysts in a KOH electrolyte solution to improve the efficiency.
Article
Engineering, Chemical
Anna Klegova, Katerina Pacultova, Tomas Kiska, Lucie Obalova
Summary: Co3O4 modified with Cs was deposited on an alpha- Al2O3 open-cell foam and tested for low-temperature N2O decomposition. The effect of the amount of active phase on N2O conversion was studied, and it was found that increasing the amount of active phase can enhance the catalyst activity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Svetlana V. Cherepanova, Egor G. Koemets, Evgeny Yu. Gerasimov, Irina I. Simentsova, Olga A. Bulavchenko
Summary: The reduction and structural changes of Co-based oxides doped with Al3+ ions were studied using in situ XRD and TPR techniques. It was found that Al3+ cations dissolved in the Co3O4 lattice and their distribution depended on the calcination temperature. The reduction process and phase transformation were affected by the distribution of Al in the mixed oxides.
Article
Chemistry, Physical
Sharmiladevi Ramamoorthy, Sakshi Bajhal, Anandhakumar Sundaramurthy
Summary: In this study, CuS nanorods were synthesized using a hydrothermal method and then surface modified with chitosan and folic acid. The surface modification improved the biocompatibility, cytotoxicity, and antibacterial activity of the nanorods without compromising photothermal heat generation. The modified nanorods showed enhanced anticancer activity and excellent antibacterial activity.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Mingming Li, Jigui Cheng, Yun Gan, Shisong Li, Beibei He, Wenzhou Sun
JOURNAL OF POWER SOURCES
(2015)
Article
Chemistry, Physical
Wentao Qi, Yun Gan, Yong Zhang, Jiewu Cui, Yan Wang, Xia Shu, Yucheng Wu
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Electrochemistry
Chunlei Ren, Yun Gan, Myongjin Lee, Chunyang Yang, Fei He, Yanmei Jiang, Guohui Dong, Robert D. Green, Xingjian Xue
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2016)
Article
Electrochemistry
Chunlei Ren, Yun Gan, Chunyang Yang, Myongjin Lee, Guohui Dong, Xingjian Xue
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Chemistry, Multidisciplinary
Guohui Dong, Chunyang Yang, Fei He, Yanmei Jiang, Chunlei Ren, Yun Gan, Myongjin Lee, Xingjian Xue
Article
Materials Science, Ceramics
Mingming Li, Jigui Cheng, Yun Gan, Chenxi Xu
CERAMICS INTERNATIONAL
(2018)
Article
Electrochemistry
Chunlei Ren, Yun Gan, Chunyang Yang, Myongjin Lee, Robert D. Green, Xingjian Xue
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2018)
Article
Electrochemistry
Yun Gan, Chunlei Ren, Myongjin Lee, Chunyang Yang, Xingjian Xue
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2018)
Article
Materials Science, Ceramics
Chunlei Ren, Yun Gan, Chunyang Yang, Myongjin Lee, Xingjian Xue
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2019)
Article
Electrochemistry
Chunyang Yang, Yun Gan, Myongjin Lee, Chunlei Ren, Xingjian Xue
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Electrochemistry
Yun Gan, Myongjin Lee, Chunyang Yang, Chunlei Ren, Xingjian Xue
Summary: This research examines the oxygen reduction reaction and oxygen evolution reaction performance and stability of nanostructured surfaces fabricated through hydrothermal synthesis at high temperatures. The electrochemical kinetic properties of Co3O4 nanocluster modified surfaces are measured and analyzed using symmetric cells, and the effects on GDC-LSCF membrane performance are studied.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Engineering, Chemical
Myongjin Lee, Yun Gan, Chunyang Yang, Chunlei Ren, Xingjian Xue
Summary: The research focuses on the fabrication and optimization of asymmetrical hollow fiber-supported thin film membranes, aiming to enhance stability and reduce costs for practical applications.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Chunyang Yang, Yun Gan, Myongjin Lee, Chunlei Ren, Kyle S. Brinkman, Robert D. Green, Xingjian Xue
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Physical
Chunlei Ren, Yun Gan, Chunyang Yang, Myongjin Lee, Xingjian Xue
ACS APPLIED ENERGY MATERIALS
(2020)
Proceedings Paper
Electrochemistry
Chunlei Ren, Yun Gan, Myongjin Lee, Chunyang Yang, Fei He, Yanmei Jiang, Guohui Dong, Robert D. Green, Xingjian Xue
SOLID OXIDE FUEL CELLS 15 (SOFC-XV)
(2017)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)
