Article
Chemistry, Physical
Lei Hu, Liujun Jin, Tingyu Zhang, Jianhua Zhang, Jinghui He, Dongyun Chen, Najun Li, Qingfeng Xu, Jianmei Lu
Summary: In this study, MoO2-MoO3/Ni2P nanoflowers were fabricated as an electrocatalyst with enhanced performance. The electronic structure of the active sites was adjusted through the co doping strategy, significantly improving the catalyst's performance. Moreover, the introduction of Mo allowed for morphology control, increasing the electrochemical active area.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Rui-Hua Zhang, Zhen-Hua Hao, Lin-Yuan Shi, Hao-Tian Chen, Yong-Chun Shu, Ji-Lin He
Summary: The study demonstrates that increase in reaction temperature and decrease in distance between activated carbon and MoO3 promote the reduction of MoO3 to MoO2. MoO3 is first decomposed into platelet-shaped MoOx, which then transforms into needle-like or irregular platelet-like Mo4O11, eventually forming MoO2 powders.
Article
Chemistry, Physical
Xue-Ting Gao, Yi-Fan Wang, Lin Fu, Rui-Xin Zhang, Rui-Min Li, Zhi-Hua Gao, Zhi-Feng Yan, Yi-Ming Liu, Wei Huang, Lei Liu, Zhi-Jun Zuo
Summary: The molybdenum carbide-based catalyst Mo2C/MWCNT shows high electrocatalytic activity and stability in the methanol oxidation reaction, with a higher current density compared to the traditional MoO2/MWCNT and MoO3/MWCNT catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
M. Burgstaller, H. Lund, M. O'Sullivan, H. Huppertz
Summary: The effect of potassium content on the hydrogen reduction of molybdenum trioxide to molybdenum dioxide was studied. It was found that increasing potassium content leads to a decrease in reduction rate, an increase in the fractional content of gamma-Mo4O11 during the reduction process, and an increase in grain size of the resulting MoO2 powder.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Wanli Liang, Pengyu Dong, Zhichen Le, Xinyi Lin, Xiyu Gong, Fangyan Xie, Hao Zhang, Jian Chen, Nan Wang, Yanshuo Jin, Hui Meng
Summary: By synthesizing the MoO2/Ni heterostructure and electronically reconstructing at the interface, the study effectively improved the catalytic performance of hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR).
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Wanli Liang, Mengyan Zhou, Xiulan Li, Lijie Zhu, Zhixin Li, Yifan Zhou, Jian Chen, Fangyan Xie, Hao-Fan Wang, Nan Wang, Yanshuo Jin, Hui Meng
Summary: Hydrogen energy is the most suitable solution for long-term, large-scale energy storage. The design of efficient, economical, and stable electrocatalysts for hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER) is crucial for its commercial development. In this study, a Ni nanocluster supported on oxygen-vacancy-rich MoO2 (Ni/MoO2_x) is designed and it shows excellent hydrogen electrocatalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sanjay Upadhyay, Rameez Ahmad Mir, Niraj Kumar, O. P. Pandey, Arijit Sen
Summary: In this study, a highly efficient OER electrocatalyst MoO2@C was successfully synthesized using plastic bottle as a carbon source and reducing agent. The conductive carbon layers encapsulating MoO2 nanoparticles and defect-rich supporting carbon contribute to its high activity and stability.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Michael Zoller, Michael O'Sullivan, Hubert Huppertz
Summary: This study examined the impact of parameters such as reduction temperature, water influx, and potassium content on the hydrogen reduction of the first step in the production of molybdenum dioxide, utilizing a chemical vapor transport mechanism to obtain phase pure MoO2. It was found that the specific surface areas of molybdenum dioxide and the morphology of the grains could be modulated during the process.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Lijie Zhu, Zhixin Li, Muzi Yang, Yifan Zhou, Jian Chen, Fangyan Xie, Nan Wang, Yanshuo Jin, Shuhui Sun, Hui Meng
Summary: This study reports a novel strategy to modulate the electron density of MoO3 through Ni doping, which leads to excellent alkaline HER and HOR performance of Ni-doped MoO3 supported on MoO2/Mo2N hybrid, demonstrating higher stability than other catalysts reported.
Article
Chemistry, Physical
Yanqiang Li, Chao Wang, Ming Cui, Jiabin Xiong, Liwei Mi, Siru Chen
Summary: Developing a low-cost and high-efficiency bifunctional catalyst MoO2@MoS2@Co9S8 is critical for catalyzing electrochemical overall water splitting to produce hydrogen. Utilizing an in-situ reduction and vulcanization strategy, MoO2@MoS2@Co9S8 heterostructure nanorods were prepared with outstanding catalytic performances for both HER and OER. The 2D nanosheet assembled heterostructure nanorods can effectively catalyze water splitting with high stability, demonstrating practical application potential.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mengmeng Zhang, Hui Xue, Xiaopeng Han, Zhijia Zhang, Yong Jiang, Yida Deng, Wenbin Hu
Summary: A highly efficient Cu2O/MoO2 photocathode was successfully prepared via in-situ electrodeposition. The study demonstrated that MoO2 not only passivated the surface state of Cu2O and accelerated reaction kinetics as a cocatalyst, but also promoted the migration and separation of photogenerated charge. Furthermore, MoO2 exhibited excellent photoelectrochemical stability by inhibiting the reduction of Cu+ in Cu2O and forming an internal electric field.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Leyan Liu, Xudong Zhang, Xin Xie, Jialin Cai, Jie Ding, Qiang Cai, Yushan Liu, Siyu Lu
Summary: In this study, a hierarchical Ru/MoO2/carbon nanotubes hybrid was prepared by a solid-phase reaction method and exhibited excellent performance for the electrochemical hydrogen evolution reaction (HER) in alkaline electrolyte.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Qinglian Xu, Tianqi Yu, Jinli Chen, Guangfu Qian, Hainong Song, Lin Luo, Yongli Chen, Tengyu Liu, Yizhe Wang, Shibin Yin
Summary: This study successfully prepared tomentum-like FeNi3-MoO2 heterojunction nanosheets array self-supported on nickel foam as bifunctional catalyst to enhance the efficiency of urea oxidation and hydrogen evolution reactions, demonstrating excellent bifunctional catalytic activity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Zijian Lv, Ruijin Zeng, Ling Zhu, Zhenli Qiu, Meijin Li, Dianping Tang
Summary: In this study, a double-mode visual and PEC immunosensing system was designed for the sensitive detection of prostate-specific antigen (PSA) through gasochromic reaction with Pd-MoO3. Under optimal conditions, the system showed high sensitivity for PSA detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Chuang Li, Haeseong Jang, Min Gyu Kim, Liqiang Hou, Xien Liu, Jaephil Cho
Summary: This paper successfully designs Ru/MoO2_x catalyst for the alkaline hydrogen evolution reaction, addressing the insufficient electrochemical activity of MoO2 and weak adsorption/dissociation abilities of Ru. The specific structure design incorporating Ru-O-Mo sites and oxygen-vacancy-enriched MoO2 enables the catalyst to exhibit excellent electrocatalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Chemistry, Multidisciplinary
Kabeer Nasrin, Vasudevan Sudharshan, Kaipannan Subramani, Marappan Sathish
Summary: This review investigates the material design and electrochemical performance of 2D/2D MXene heterostructures for supercapacitors. The synthesis and energy storage properties of MXene are discussed, along with different preparation methods and the synergistic enhancement of MXene with other materials. Future research directions, including fundamental mechanism investigations and material optimizations, are outlined.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
S. Jayachitra, P. Ravi, P. Murugan, M. Sathish
Summary: Topological insulators have attracted significant attention in photocatalytic water splitting, and Bi2Se3, with its unique properties, has been successfully exfoliated into few-layer nanosheets to enhance the photocatalytic activity when composited with TiO2 nanoparticles. The improved hydrogen evolution rate and photostability of the Bi2Se3/TiO2 nanocomposite suggest its promising potential for photocatalytic hydrogen production.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kaipannan Subramani, Shanmugam Shunmugasundaram, Velu Duraisamy, Rajaji Ilavarasi, Sakkarapalayam Murugesan Senthil Kumar, Marappan Sathish
Summary: Porous carbon materials are considered as a proficient impetus for enhancing supercapacitor performance due to their high surface area and meso/microporous traits. Dual heteroatom doping (such as nitrogen and boron) can further improve the activity of the material, resulting in excellent rate capability and capacitance retention.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
M. Priyadharshini, M. Sandhiya, M. Sathish, T. Pazhanivel, G. Mani, Asma A. Alothman, Khadraa N. Alqahtani
Summary: Ni2P2O7 prepared using a soft template method showed enhanced electrochemical performance by adding different surfactants, leading to improved specific capacitance and cycling stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Kabeer Nasrin, Vasudevan Sudharshan, Kaipannan Subramani, Manickavasakam Karnan, Marappan Sathish
Summary: A scalable synthesis method for 2D/2D MXene/BCN heterostructure through no residue direct pyrolysis is reported in this study, offering high pseudocapacitive activity and impressive stability by removing terminal groups at elevated temperature. This method shows promise as a convenient solution for energy storage applications in the future.
Article
Agricultural Engineering
Shivam Rawat, T. Boobalan, M. Sathish, Srinivas Hotha, Bhaskar Thallada
Summary: Biochar prepared from litchi seeds was used to fabricate supercapacitor electrodes. The activated biochar showed a specific capacitance of 493 F g-1, significantly higher than the initial capacitance of 190 F g-1. The activated biochar supercapacitor exhibited excellent cyclic stability with capacitance retention above 90% after 10,000 charge-discharge cycles.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Multidisciplinary
Srinivasan Suresh Vivekanand, Srinivasan Suresh Balaji, Kabeer Nasrin, Marappan Sathish
Summary: In this study, Se-doped graphene was synthesized using supercritical fluid technique and characterized by XPS and EDAX. The Se-doped graphene exhibited a gravimetric capacitance of 581 F g(-1) in 1 M H2SO4 solution and a specific capacitance of 420 C g(-1) in 0.01 M ammonium metavanadate solution in 1 M H2SO4. The Se-doped graphene symmetric supercapacitor showed an improved capacitance retention of 85% over 50000 cycles and a coulombic efficiency of 94%. The energy density of the Se-doped graphene symmetric supercapacitor reached 23.33 Wh kg(-1) in 0.01 M ammonium metavanadate solution in 1 M H2SO4 solution.
Article
Energy & Fuels
Bebin Ambrose, Kabeer Nasrin, Murugesan Arunkumar, Arthy Kannan, Marappan Sathish, Murugavel Kathiresan
Summary: Supercapacitor devices have become increasingly important in energy storage applications due to their excellent power density, quick charging/discharging capabilities, and long cycle ability. This study focuses on the synthesis of two different viologen-based covalent organic polymers (COPs) with hollow sphere and hollow tube morphologies, which show improved stability and enhanced performance compared to traditional polymer electrodes. One of the COPs, COP-2, exhibits remarkable electrochemical performance and exceptional stability with 100% capacitance retention after 50,000 cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
K. Nasrin, M. Arunkumar, N. Koushik Kumar, V. Sudharshan, S. Rajasekar, D. Mukhilan, M. Arshad, M. Sathish
Summary: This research demonstrates the ability to store energy in a hetero-assembly of two-dimensional materials, reduced graphene oxide (rGO) and Nb2C MXene, through dual N doping on both lattices using the supercritical fluid processing method. The engineered hetero-assembly, N-(Nb2C/rGO), exhibits outstanding electrochemical performance with high specific capacitance and admirable energy density in aqueous and non-aqueous electrolytes. Additionally, the capacitance retention remains close to 100% after multiple cycles of charging and discharging in a quasi-solid-state electrolyte. This study provides insights into the modulation of energy storage ability and the design of high-performance electrode materials for supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
K. P. Annamalai, S. Gokulnath, T. Boobalan, M. Sathish
Summary: The energy density of solid-state electrochemical energy storage devices can be increased by constructing indigenous Sn doped nickel dichalcogenides nanosheets with tunable composition.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
P. Ravi, K. Dinesh Kumar, V. N. Rao, M. V. Shankar, M. Sathish
Summary: The key to achieving a stable and efficient photocatalyst for continuous hydrogen production is to steer photo excitons through interface engineering of semiconductor photocatalysts. Binary nanocomposites, with advantages such as larger surface area, effective light harvesting, improved photoexcitons separation, and non-corrosiveness, have gained special attention. In this study, a nanocomposite of metallic TaN nanoparticles attached with a TiO2 layer was successfully synthesized using hydrothermal method. The analysis revealed the formation of metallic TaN wrapped with irregular spherical TiO2 morphology. The TaN plays a key role in boosting photocatalytic activity by promoting the separation and transfer of photoexcitons.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Subramani Prakash, Murugesan Sandhiya, Jawaharali Kamarsamam, Mahadevan Ganesan, Marappan Sathish
Summary: This study focuses on customizing spent LiB anodes into high-performance supercapacitor electrodes via supercritical water exfoliation, with a significant improvement in electrochemical performance and energy density after the addition of dopamine. This processing method offers a solution to the recycling of spent LiBs.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Physical
Nadar Allwyn, Bebin Ambrose, Murugavel Kathiresan, Marappan Sathish
Summary: Diversity in electrocatalysis and energy storage is crucial in addressing energy and ecological issues. This study introduces a self-sacrificial viologen-based covalent triazine polymer template for the production of nitrogen-doped carbon, eliminating the need for time-consuming postdoping processes. The resulting carbon material exhibits excellent capability for oxygen reduction reaction and shows promising performance in zinc-air batteries, demonstrating outstanding durability and specific capacity value nearing the theoretical value.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
M. Sandhiya, D. Ponraj Jenis, V. Sudha, S. M. Senthil Kumar, R. Thangamuthu, M. Sathish
Summary: Using acetaminophen as a redox additive with H2SO4, the energy density of supercapacitor electrodes can be increased. The reversible redox process of acetaminophen enhances the electrochemical performance of the supercapacitor electrodes and increases the ionic conductivity of PVA/H2SO4 gel electrolyte, resulting in excellent energy density of the flexible supercapacitor.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Nanoscience & Nanotechnology
Kabeer Nasrin, Vasudevan Sudharshan, Murugesan Arunkumar, Marappan Sathish
Summary: This study unveils a synergistically in situ prepared 2D/2D Nb2C/Ti3C2 MXene heterointerface nanoarchitecture, which delivers excellent specific capacitance and energy density, along with superior cycling retention.
ACS APPLIED MATERIALS & INTERFACES
(2022)
