Article
Chemistry, Multidisciplinary
Z. Mo, G. Wu, P. Yan, X. Zhu, J. Qian, Y. Lei, L. Xu, H. Xu, H. Li
Summary: This study reports the successful synthesis of ultrathin oxygen-engineered g-C3N4 (UOCN) by a bottom-up strategy using a gaseous sacrificial agent-induced template. The UOCN exhibits efficient separation of photogenerated carriers, enhanced utilization of sunlight, and improved photocatalytic hydrogen evolution. The photocatalytic performance of UOCN is significantly better than that of bulk carbon nitride, and the H2 evolution rate is extended to longer wavelengths. This work presents a practical strategy for the design of innovative photocatalysts for energy innovation.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Applied
Tanmay Bhowmik, Mriganka Sadhukhan, Manjunatha Kempasiddaiah, Sudip Barman
Summary: The synthesized Pd@CNx composite exhibits high catalytic activity and selectivity, effective in catalyzing the dehydrogenation of NaBH4 and ammonia borane in aqueous medium, as well as hydrogenation of 4-nitrophenol to 4-aminophenol. The catalyst shows high selectivity towards nitro groups and superior catalytic activity in Ullmann coupling reaction.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Maciej Fronczak, Emilia Talas, Zoltan Paszti, Gabor P. Szijjarto, Judith Mihaly, Andras Tompos, Piotr Baranowski, Santosh Kr Tiwari, Michal Bystrzejewski
Summary: This study systematically investigates the effect of different alkali metal dopants on the photocatalytic performance of metal doped graphitic carbon nitrides (g-C3N4). The results reveal that Na doping enhances hydrogen production, while Li doping increases the band gap of g-C3N4. Palladium nanoparticles are dispersed or agglomerated on the support with small particle size.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Zongpeng Wang, Zhiping Lin, Jun Deng, Shijie Shen, Fanqi Meng, Jitang Zhang, Qinghua Zhang, Wenwu Zhong, Lin Gu
Summary: By redesigning the six-coordinated octahedrons in Co9S8 using an Fe-incorporated method, the overall d-band center is regulated to achieve optimized adsorption and superior OER activity. This work sheds light on the design of OER catalysts through polyhedron engineering using topochemical deintercalation, resulting in a 95 mV reduction in overpotential at 10 mA cm(-2).
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Fuma Ando, Takao Gunji, Toyokazu Tanabe, Isao Fukano, Hector D. Abruna, Jianfei Wu, Takeo Ohsaka, Futoshi Matsumoto
Summary: The study investigated the enhancement of the oxygen reduction reaction (ORR) activity of platinum nanoparticles using transition metal oxide supports, finding that the ORR activity depends significantly on the atomic ratio of metals in the metal oxide composite and the type of metal oxide support. It was observed that a catalyst with a d-band center approximately 0.2 eV lower than that of platinum exhibited maximal ORR activity.
Article
Engineering, Environmental
Yu Tang, Kaiyuan Shen, Jie Zheng, Baihua He, Jiali Chen, Jianhua Lu, Wen Ge, Lanxian Shen, Peizhi Yang, Shukang Deng
Summary: This study demonstrates that by introducing oxygen vacancies into the inert oxidation layer on metallic cobalt sulfide, and by incorporating zinc into the structure, significant improvements in electrocatalytic activity can be achieved. This fabricated Zn doped CoOx/Co9S8 nanotube arrays exhibit remarkable electrocatalytic activity with a low overpotential and good long term stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Hao Zhang, Pan Wu, Jian He, Wei Jiang, Changjun Liu
Summary: This study successfully achieved high crystallinity and dispersibility of carbon nitride nanoparticles using a salt-template method, leading to enhanced photocatalytic activity, higher H2O2 generation rate, and RhB degradation rate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Dongyang He, Hao Yang, Dexin Jin, Jiao Qu, Xing Yuan, Ya-nan Zhang, Mingxin Huo, Willie J. G. M. Peijnenburg
Summary: Research demonstrates that by tuning reaction parameters, the synthesized g-C3N4 can achieve extremely high photocatalytic activity, outperforming P25 TiO2 and other g-C3N4-based nanocomposites with lower catalyst consumption, and requiring only short ultrasonic pretreatment for excellent performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Chitiphon Chuaicham, Karthikeyan Sekar, Yihuang Xiong, Vellaichamy Balakumar, Yanisa Mittraphab, Kuniyoshi Shimizu, Bunsho Ohtani, Ismaila Dabo, Keiko Sasaki
Summary: In this study, a series of oxygen-doped hollow porous surface graphitic carbon nitride samples were prepared by one-pot thermal polycondensation, showing superior photocatalytic performance for the degradation of organic pollutants in wastewater containing pharmaceutical waste. The improved light absorption, reduced recombination rate of photogenerated electron and hole, and enhanced electron transportation of the OCN samples contributed to their excellent degradation performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jiguang Zhang, Yuting Guo, Bin Shang, Tingting Fan, Xinyi Lian, Pingping Huang, Yunyun Dong, Zhou Chen, Xiaodong Yi
Summary: A g-C3N4-supported Cu2O composite was fabricated in this study, which showed efficient and stable reduction of carbon dioxide to ethylene, providing a promising strategy for reducing carbon dioxide emissions and producing high value-added chemicals.
Article
Engineering, Environmental
Zhanfeng Ma, Xiao Liu, Xusheng Wang, Zhenggang Luo, Weirong Li, Yuhang Nie, Lang Pei, Qinan Mao, Xin Wen, Jiasong Zhong
Summary: This study presents a d-band center tuning strategy to enhance the photocatalytic activity for CO2 activation. By engineering Mn dopants and oxygen vacancies in Zn2GeO4 nanorods, a strong interaction between CO2 molecules and the catalysts was achieved, resulting in significantly accelerated CO2 photoreduction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Tianfen Huang, Ruiyi Wang, Jin Zhang, Jiapei Wang, Hui Ge, Jun Ren, Zhanfeng Zheng
Summary: This study demonstrates that cyano group modified g-C3N4 supported Ru nanoparticles exhibit high activity and selectivity for CO2 methanation. The introduction of cyano group promotes the formation of medium basic sites for enhanced CO2 adsorption. The synergistic effect of cyano group and Ru nanoparticles improves catalytic performance up to 14 times by influencing CO2 adsorption and changing the CO2 hydrogenation reaction pathway.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Pengshuo Fan, Yizhou Hao, Cong Xu, Yangfei Cao, Xianwu Huang, Jiahui Huang, Xuanyu Lyu, Run Zhu, Di Lei, Wei Li, Dong Yang, Haiwei Liang, Jianhao Chen, Tongtao Li, Angang Dong
Summary: The use of 3D porous wrinkled graphitic carbon (PWGC) as the carbon support in proton-exchange membrane fuel cells improves their durability and stability. The PWGC, synthesized using a catalyst-free, plasma-enhanced chemical vapor deposition approach, possesses a high surface area, a high degree of graphitization, and exceptional corrosion resistance. Pt/PWGC catalysts demonstrate superior high potential stability compared to those made with commercial carbon supports, and Pt@C/PWGC catalysts show significantly improved durability with the introduction of a sacrificial layer strategy.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Jinli Chen, Guangfu Qian, Bingxian Chu, Zexing Jiang, Kexin Tan, Lin Luo, Bin Li, Shibin Yin
Summary: In this study, Sn and Co elements are introduced into Pt to form a PtCo-PtSn/C heterostructure for enhancing the oxygen reduction reaction (ORR). The results show that PtCo-PtSn/C exhibits remarkable ORR activity, high stability, and high mass activity in HClO4 solution.
Article
Engineering, Environmental
Lei Zhuang, Zhijun Jia, Yi Wang, Xiaoming Zhang, Suli Wang, Jing Song, Liangliang Tian, Tao Qi
Summary: This study develops a unique composite catalyst comprised of partial Pd nanoparticles and partial Pd single atoms for commercially viable direct methanol fuel cells. The catalyst exhibits remarkable activity and long-time stability in alkaline solution for the methanol oxidation reaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Rajib Samanta, Ranjit Mishra, Sudip Barman
Summary: In this study, an interface-engineered porous Pt-PdO-N-doped carbon composite was synthesized for the hydrogen evolution/oxidation reaction (HER/HOR) in both acidic and alkaline media. The catalyst showed outstanding performance and durability in both media, with higher performance than commercial Pt/C catalyst.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Anirudha Shekhawat, Rajib Samanta, Sudip Barman
Summary: Researchers synthesized a porous and interfaces-rich Fe3O4/RuO2-C composite catalyst from Metal organic frameworks (MOF) material, showing excellent oxygen evolution and hydrogen evolution reaction activity and stability in alkaline media.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Prajnashree Panda, Ranjit Mishra, Sonali Panigrahy, Sudip Barman
Summary: In this study, a facile two-step process was used to form a 3D assembly of thin Co-Al spinel sheets and carbon composite, which exhibited high specific surface area and enhanced electrochemical activity. This composite showed potential for energy storage applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Sonali Panigrahy, Ranjit Mishra, Prajnashree Panda, Manjunatha Kempasiddaiah, Sudip Barman
Summary: There is a growing interest in the electrochemical conversion of biomass-derived compounds due to the high sustainability and potential for generating value-added products and renewable electricity. In this study, a carbon-supported silver nanoparticle aerogel was synthesized and used as a catalyst for the electrocatalytic hydrogenation of 5-(hydroxymethyl)furfural. The conversion of furfural to hexanedione was demonstrated using ambient pressure and temperature, eliminating the need for high pressure and temperature. The results showed high Faradic efficiency and selectivity for the conversion of furfural to hexanedione under certain conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Energy & Fuels
Prajnashree Panda, Ranjit Mishra, Sudip Barman
Summary: The microwave-assisted-hydrothermal synthesis of amorphous MoS2 with in-situ nano-engineered C-dots for energy storage applications shows significantly higher specific capacitance compared to other synthesis methods. The high capacitance can be attributed to the amorphous nature of MoS2, formation of metallic 1T phase, good charge transport, and strong catalyst support interaction, providing a promising technique for developing high-performance supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Ranjit Mishra, Sonali Panigrahy, Sudip Barman
Summary: This report presents a method for preparing sulfur-doped carbon materials and investigates their electrochemical performance in sodium-ion batteries. The study reveals that the synergistic effect of sulfur and expanded interlayers of carbon can greatly enhance the performance of carbon materials.
Article
Nanoscience & Nanotechnology
Rajib Samanta, Ranjit Mishra, Biplab Kumar Manna, Sudip Barman
Summary: In this study, a 2D amorphous cobalt oxide nanosheet/nitrogen-doped carbon composite was prepared and demonstrated to have excellent catalytic activity, stability, and overall water-splitting performance in alkaline conditions. This catalyst shows great potential for applications in anion exchange membrane water electrolyzers and other renewable energy-based devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Energy & Fuels
Prajnashree Panda, Rajib Samanta, Sudip Barman
Summary: The development of two-dimensional carbon nanosheets and microporous carbon nanosheets with high specific surface area, large pore volume, and high conductivity is important for energy storage and gas storage applications.
Article
Energy & Fuels
Biplab Kumar Manna, Prajnashree Panda, Ranjit Mishra, Sudip Barman
Summary: In this study, a one-dimensional RuO2-N-doped carbon (1D-RuO2/C) composite is synthesized and demonstrated for supercapacitor application. The 1D-RuO2/C composite exhibits a specific capacitance of 671 F/g and retains 93.46% of its capacitance after 5000 cycles at 5 A/g current. An asymmetric supercapacitor (ASC) device, constructed using 1D-RuO2/C as the positive electrode material, shows a specific capacitance of 53 F/g, a power density of 751.66 W kg-1, and an energy density of 16.71 Wh kg-1. The ASC maintains approximately 98.65% of its initial value at 10 A/g discharge current. The high electrochemical activity of the 1D-RuO2/C composite is attributed to its 1D morphology, high surface area, and synergistic interaction between RuO2 and carbon support. The researchers hope that this composite material will find applications in energy storage systems.
Article
Chemistry, Physical
Anirudha Shekhawat, Rajib Samanta, Sonali Panigrahy, Sudip Barman
Summary: A two-dimensional amorphous sheet-like nickel oxide encapsulated on nitrogen doped carbon (NiOx/CNx) composite was synthesized and used for urea oxidation reaction (UOR) and ethanol oxidation reaction (EOR). The catalyst showed excellent catalytic activity and stability in oxygen evolution reaction (OER), UOR, and EOR. This finding suggests that NiOx/CNx nanosheets can replace noble metal-based catalysts for efficient anodic oxidation reactions.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Manjunatha Kempasiddaiah, Rajib Samanta, Sonali Panigrahy, Sudip Barman
Summary: Recent reports have shown that bimetallic electrocatalysts can enhance the activity for electrochemical formate production during CO2 reduction. However, they suffer from issues such as poor selectivity and durability. In this study, the incorporation of reduced graphene oxide (rGO) into nanostructured bimetallic CuSnOx electrocatalysts (CuxSnOx/rGO) led to notable improvements in electrochemical CO2 reduction to formate production. The Cu0.33SnOx/rGO nanocomposite exhibited enhanced electrocatalytical activity and selectivity towards formate production, with higher formate faradaic efficiency compared to other nanocomposites.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sonali Panigrahy, Prajnashree Panda, Anirudha Shekhawat, Sudip Barman
Summary: The design and synthesis of high surface area one-dimensional metal-organic frameworks (MOFs) are crucial for their potential usage in supercapacitor applications. A one-dimensional Ni-MIL-77 MOF with high surface area was synthesized and investigated for its supercapacitor activity. The 1D-Ni-MIL-77 MOF nanobelts showed a surface area of 93.48 m2 g-1 and a specific capacitance of 1376 F g-1. An asymmetric supercapacitor (ASC) was assembled using activated carbon as the negative electrode and 1D-Ni-MIL-77 nanobelts as the positive electrode, achieving an energy density of 25 W h kg-1 at a power density of 750 W kg-1 and retaining 95% of its initial capacitance after 5000 cycles.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
Prajnashree Panda, Rajib Samanta, Sudip Barman
Summary: The development of two-dimensional carbon nanosheets with high specific surface area, large pore volume, and high conductivity is crucial for energy storage and gas storage applications.
Article
Chemistry, Physical
Prajnashree Panda, Sudip Barman
Summary: The synthesis of 2D carbon nanosheets with sub-nanometer pore-rich microporous morphology and the understanding of their structure-performance relationship are crucial in the development of advanced supercapacitors and gas adsorption devices.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Rajib Samanta, Debashish Paik, Manjunatha Kempasiddaiah, Sonali Panigrahy, Sudip Barman
Summary: This study focuses on the electrochemical oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) using MOF-derived silver/silver oxide (Ag/AgOx-CNx) catalyst. The research finds that Ag/AgOx-CNx exhibits good electrocatalytic activity and stability in acid media, with high faradaic efficiency for FDCA production.
SUSTAINABLE ENERGY & FUELS
(2023)
