Article
Chemistry, Multidisciplinary
Sadaf Saeedi Garakani, Miao Zhang, Dongjiu Xie, Anirban Sikdar, Kanglei Pang, Jiayin Yuan
Summary: This study presents a synthetic alternative for the preparation of Fe3C nanoparticles encapsulated in nitrogen-doped hierarchically porous carbon membranes (Fe3C/N-C) as sustainable and high-performance catalysts. The Fe3C/N-C exhibits outstanding peroxidase-like catalytic activity and can be used for detecting ascorbic acid with high sensitivity and selectivity. This research provides a sustainable way to synthesize biomimetic enzymes with excellent catalytic performance, offering a convenient and sensitive colorimetric technique for potential applications in medicine, biosensing, and environmental fields.
Article
Materials Science, Multidisciplinary
Zhi-Wen Zhang, Cui-Ying Lu, Guang-Hui Liu, Yuan-Jia Cao, Zhen Wang, Ting-ting Yang, Yu-Hong Kang, Xian-Yong Wei, Hong-Cun Bai
Summary: Porous carbon with excellent electrochemical performance was synthesized using hydrothermal and carbonization methods. Caragana was used as carbon precursor, hydrazine hydrate as nitrogen source, and nickel acetate as nickel source during the preparation process. The resulting porous carbon showed high surface area (1779 m2 g-1), moderate oxygen content (7.88 at%), and nitrogen content (1.64 at%) at a carbonization temperature of 700°C, which contributed to improved pseudocapacitance. The N4NiPC180-3 exhibited a specific capacitance of 427 F g-1 at 0.5 A g-1, high capacitance retention of 74.3% even at 20 A g-1, and a retention rate of 97.4% after 10,000 cycles, demonstrating excellent cycling stability. In the two-electrode system test, N4NiPC180-3 achieved an energy density of 35.8 W h kg-1 at a power density of 500.1 W kg-1, showcasing its potential for high value-added utilization of biomass derivatives in energy storage applications.
MATERIALS TODAY ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Zhi-Wen Zhang, Cui-Ying Lu, Guang-Hui Liu, Yuan-Jia Cao, Zhen Wang, Ting-ting Yang, Yu-Hong Kang, Xian-Yong Wei, Hong-Cun Bai
Summary: A green and effective nitrogen and nickel in-situ doping strategy was developed to prepare cellulose-based N/Ni co-doped porous carbon materials, which exhibited excellent electrochemical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Electrochemistry
Jie Deng, Xiang Li, Sarah Imhanria, Keyu Chen, Ximing Deng, Wei Wang
Summary: The non-noble metal MoCx-NC is an efficient and stable electrocatalyst with great potential for application in direct hydrazine fuel cells technology.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Mir Ghasem Hosseini, Vahid Daneshvari-Esfahlan, Hossein Aghajani, Sigrid Wolf, Viktor Hacker
Summary: In this study, nitrogen-doped reduced graphene oxide-supported bimetallic Pd-Ni nanoparticles were synthesized and investigated as an anode electrocatalyst in direct hydrazine-hydrogen peroxide fuel cells. The electrochemical studies showed that the Pd-Ni/NrGO catalyst exhibited higher activity and stability compared to Pd/NrGO, with improved hydrazine oxidation current density and onset potential. Additionally, the synthesized catalyst showed high power density and potential for application in DHzHPFCs due to its low Pd content and enhanced performance.
Article
Chemistry, Analytical
Nada F. Atta, Ahmed Galal, Asmaa R. M. El-Gohary
Summary: An efficient electrochemical sensor has been developed for the detection of hydrazine hydrate in real water samples by utilizing a composite sensor with unique properties of carbon nanotubes, Nafion, 15-crown-5, and gold nanoparticles. The sensor allows for successful detection of HH in a concentration range of 0.005-200 μM with a low detection limit. The practical application of the sensor in wastewater analysis demonstrates acceptable recovery, excellent anti-interference ability, and long-term stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Longhua Yao, Xiugang Li, Wenfang Peng, Qilu Yao, Jianhui Xia, Zhang-Hui Lu
Summary: In this study, Co-CeOx/NCNS catalyst with outstanding catalytic activity for the hydrolytic dehydrogenation of NaBH4 was successfully prepared, achieving a high hydrogen generation rate. The superior performance can be attributed to the synergistic effects of various factors, such as the special properties of nanoparticles, the influence of support surface area and defects, among others.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Azhar Mahmood, Bolin Zhao, Nanhong Xie, Li Niu
Summary: This study presents the synthesis of novel ionic-liquid derived nitrogen and iron co-doped carbon nanotube based core-sheath nanostructures that show superior catalytic activities in the ORR. The advantage of using IL as a nitrogen source results in high levels of N doping and surface area, leading to better ORR performance compared to commercial catalysts. The outstanding electrocatalytic performance of CNT/Fe-N-C catalysts is attributed to the synergistic effect of Fe and N co-doping, providing more catalytic sites for the ORR, and the high surface area and excellent electron transfer rate from the IL-derived core-sheath structure.
Article
Chemistry, Physical
Wei Zhang, Yu -Ping Chen, Lu Zhang, Jiu-Ju Feng, Xin-Sheng Li, Ai -Jun Wang
Summary: Developing economical, efficient, and stable electrocatalysts for the oxygen reduction reaction (ORR) is crucial in alleviating the energy shortage. In this study, FeCo alloy was successfully confined in N-doped carbon nanotubes (FeCo/NCNTs-800) with the assistance of theophylline (THP), which can be easily extracted from natural plants. The resulting FeCo/NCNTs-800 catalyst exhibited superior ORR performance compared to commercial Pt/C (50 wt%) in an alkaline solution, providing a feasible strategy for the development of transition metal-based carbon catalysts in alkaline fuel cells.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Pengyuan Qiu, Ruhao Hu, Xinyu Wang, Yanjun Xue, Jian Tian, Xiaobo Chen
Summary: Co-doped Mo5N6 nanosheets were found to enhance the photocatalytic H-2 evolution of g-C3N4 nanosheets, achieving a higher hydrogen production rate and lower energy demand.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
XiangYu Zhang, Haibo Liu, Xing Sheng, Xiaomin Mai, Shuaishuai Hou, Bin Li, Xiuwen Chen, Yibiao Li, Feng Xie
Summary: This study reports an efficient method for converting renewable biomass resources into nitrogen-containing compounds. Nitrogen-doped carbon supported cobalt catalysts with a unique core-shell structure were prepared and their catalytic behavior in the dehydrocyclization reaction was regulated. The method has the advantages of a broad substrate scope, good functional group tolerance, a reusable catalyst, and easily available reactants. It is convenient and practical for the synthesis of versatile triazines with advantageous biological and physical properties.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Hui Wang, Qing Dong, Lu Lei, Shan Ji, Palanisamy Kannan, Palaniappan Subramanian, Amar Prasad Yadav
Summary: Structural engineering was used to tailor the active site quantity in nanostructured materials for fuel cell applications, in this study in particular Co nanoparticles were incorporated into 3D nitrogen-doped carbon tubes. The Co@NCNTs exhibited improved electrocatalytic activity and stability towards the electro-oxidation of hydrazine, making them a promising candidate for use in fuel cell applications.
Article
Chemistry, Inorganic & Nuclear
Di Li, Yingying Xing, Changjian Zhou, Yikai Lu, Shengjie Xu, Xiangli Shi, Deli Jiang, Weidong Shi
Summary: In this study, a Fe-N co-doped cobalt selenide nanosheet array was prepared as a highly efficient OER electrocatalyst through an anion and cation co-doping strategy, showing outstanding OER performance and long-term durability. This novel electrocatalyst holds promise for replacing expensive commercial electrocatalysts and offers a new approach for the preparation of effective and robust OER electrocatalysts.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Qing Dong, Hui Wang, Quanbing Liu, Shan Ji, Yadong Zhang, Cheng Tang, Xuyun Wang, Rongfang Wang
Summary: A synthetic strategy was developed to prepare iron or iron compound inserted nitrogen-doped carbon nanotubes with uniform structure, and Fe3C@NCNITs were found to exhibit promising catalytic activity as a bifunctional catalyst.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
J. J. Villora-Pico, I. Campello-Gomez, J. C. Serrano-Ruiz, M. M. Pastor-Blas, A. Sepulveda-Escribano, E. V. Ramos-Fernandez
Summary: The catalytic activity of cobalt nanoparticles can be enhanced by supporting them on N-doped activated carbons, due to the interaction of nitrogen functional groups with the cobalt particles (forming Co4N) and the development of mesopores during the activation process increasing the accessibility of reactants to the active sites.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
