Article
Chemistry, Physical
Li Zhang, Yuan-Hang Qin, Li Yang, Cun-Wen Wang
Summary: In this study, highly porous Fe-N-C catalysts with fine iron-based species were synthesized by pyrolyzing precursors containing iron, nitrogen, and carbon elements. The Fe-N-C-1100 catalyst exhibited superior ORR performance with larger specific surface area, higher pore volume, better stability, and higher peak power density compared to the commercial Pt/C catalyst. This work provides a new method for synthesizing highly porous Fe-N-C catalysts decorated with fine active sites for ORR.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Girma W. Woyessa, Jay-ar B. dela Cruz, Mohammad Rameez, Chen-Hsiung Hung
Summary: A novel nanocomposite catalyst has been developed for efficient electrochemical CO2 reduction to CO, achieving high Faradaic efficiency and selectivity, which can be attributed to the intimate interface interaction between materials and higher electrochemically active surface area.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Physical
Javid Khan, Yanyan Sun, Lei Han
Summary: The article discusses the synthetic pathways and material optimization approaches used to enhance the selectivity and efficiency of g-C3N4-based hybrid structures for photocatalytic CO2 reduction, as well as their benefits and drawbacks.
Article
Chemistry, Physical
Eirini D. Koutsouroubi, Ioannis Vamvasakis, Maria G. Minotaki, Ioannis T. Papadas, Charalampos Drivas, Stelios A. Choulis, Georgios Kopidakis, Stella Kennou, Gerasimos S. Armatas
Summary: The 2D/2D heterostructure composed of exfoliated Ni-doped MoS2 nanosheets and g-C3N4 layers shows outstanding photocatalytic activity in reducing Cr(VI) in aqueous solutions, with enhanced carrier density and mobility at the Ni-MoS2/g-C3N4 interface playing a key role. In addition, fast water oxidation kinetics also contribute to the high efficiency of the photocatalytic process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yu Wang, Meng-Ting Chen, Xin Ye, Ai-Jun Wang, Gao-Mei Tu, Lu Zhang, Jiu-Ju Feng
Summary: The study successfully synthesized a highly efficient and stable electrocatalyst for oxygen reduction reaction (ORR), which exhibited excellent activity and durability in alkaline environment. The results provide valuable guidelines for the development of advanced transition metal-based carbon catalysts in energy storage and conversion devices.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Analytical
S. Vinoth, K. S. Shalini Devi, A. Pandikumar
Summary: Graphitic carbon nitride (g-C3N4) is a promising material for sensing applications due to its identifiable changes in conductivity, wide exploration as a photocatalyst, and potential use as an electrochemical sensor for detecting various substances in environmental and healthcare applications. Researchers can further explore the fascinating aspects of g-C3N4 as a sensing platform with insights from this review.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Titas Kumar Mukhopadhyay, Laurence Leherte, Ayan Datta
Summary: Quantum chemical calculations and kinetic Monte Carlo simulations were used to investigate the kinetics of one-pot synthesis of two-dimensional graphitic carbon nitride from urea pyrolysis. Two possible mechanisms were considered, with the pathway involving ammelide being preferred. The size, shape, density, and defects of the grids, as well as the relationship between rate constants and local reaction sites, play important roles in the formation of the extended g-C3N4 structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Yaping Chen, Xusheng Zheng, Jinyan Cai, Guoqiang Zhao, Bingxing Zhang, Zhouxin Luo, Gongming Wang, Hongge Pan, Wenping Sun
Summary: This study demonstrates the importance of tailoring the interfacial interaction between metal species and supports in supported electrocatalysts. By engineering a highly active interface in S-doped graphitic carbon nitride (SGCN)-supported Pt heterostructured electrocatalysts, enhanced oxygen reduction reaction (ORR) performance is achieved. The coordination and electronic structure of Pt species are modulated by S doping, resulting in strengthened Pt-N bonding and reinforcement of the metal-support interaction. The optimized 20Pt/SGCN-550 electrocatalyst exhibits excellent ORR performance and decent durability. This work not only advances the development of robust ORR electrocatalysts, but also provides a strategy for engineering heterostructured electrocatalysts with tunable interface chemistry for various catalytic applications.
Article
Chemistry, Physical
Nabila Nabi Nova, Lauren D. Zarzar
Summary: In this article, a direct laser writing method for synthesizing and patterning graphitic carbon from liquid organic precursors is reported. The laser-deposited carbon exhibits tunable electrical resistivities and microscale resolution, making it a promising candidate for applications in energy storage and sensing.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Prodyut Roy, Anup Pramanik, Pranab Sarkar
Summary: This study demonstrates that doping a single silicon atom on the surface of porous graphitic carbon nitride can serve as an efficient photocatalyst for oxygen reduction reaction (ORR) with a low onset potential. The dopant atom activates molecular oxygen adsorbed on the surface and facilitates its reduction via a four-electron transfer pathway. This metal-free photocathode system shows great potential for use in fuel cells.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Pouria Pakzad, Mehdi Mehrpooya, Fathollah Pourfayaz, Mohammad Reza Ganjali
Summary: This study investigates the electrochemical performance of Ce-PGCN,NS/Co3O4 as a metal-free ORR electrocatalyst and supercapacitor electrode. Various tests including FESEM, TEM, BET, FTIR, XRD, EDX, and Raman were conducted to characterize the synthesized electrocatalysts. The results show that Ce-PGCN,NS/Co3O4 exhibits excellent electrochemical performance as an ORR electrocatalyst and supercapacitor electrode, making it a promising alternative to commercial Pt/C catalysts. The addition of Co3O4 nanorods and doping Cerium atoms positively impact the electrocatalytic activity of g-C3N4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kunwei Li, Liyan Bao, Shuaisheng Cao, Yunfeng Xue, Shicheng Yan, Honglin Gao
Summary: Grafting organic groups with different properties onto the surface of polymeric organic materials can enhance their electron structure and charge separation. The introduction of catalytic active sites, such as defect creation and functional group coupling, on the surface of carbon nitride helps prevent recombination of photogenerated carriers. This study demonstrates the fabrication of a surface-functionalized porous carbon nitride with high water adsorption using a low-cost template method, which significantly increases the hydrogen evolution rate.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Acoustics
Yue Wang, Zhaojing Yang, Chengxu Zhang, Yuebin Feng, Haodong Shao, Jian Chen, Jue Hu, Libo Zhang
Summary: In this study, carbon quantum dots (CQDs) were successfully synthesized and applied to modify graphitic carbon nitride (g-C3N4) catalyst for efficient two-electron oxygen reduction reaction (2e- ORR). The addition of CQDs significantly improved the selectivity and hydrogen peroxide yield of the catalyst, as well as accelerated the reaction rate. This research offers a green method for enhancing the activity of g-C3N4.
ULTRASONICS SONOCHEMISTRY
(2023)
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
Materials Science, Multidisciplinary
Xiaolong Zhao, Xiaoping Yi, Wending Pan, Yifei Wang, Shijing Luo, Yingguang Zhang, Ruijie Xie, Dennis Y. C. Leung
Summary: Oxygen element is introduced into a non-metal CN photocatalyst to enhance the activity and selectivity of the photocatalytic CO2 reduction process. The optimized sample exhibits improved charge transfer dynamics, resulting in faster and more active electron transfer and higher CO2-to-CH4 photoreduction activity compared to the CN counterpart. Additionally, the sample demonstrates excellent cyclic stability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Chunxiao Li, Wanli Xu, Liangwen Ye, Jingjun Liu, Feng Wang
Summary: In this study, well-defined N-doped hollow carbons (NHCs) were successfully synthesized using an environmentally friendly ammonia-based hydrothermal synthesis method, with easily tunable shell thickness and excellent performance for oxygen reduction reaction. The enhanced battery performance can be attributed to the curvature-activated N-C moieties on the hollow carbon surface, proving to be the main active sites for ORR as evidenced by DFT calculations.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Jing Zhao, Jingjun Liu, Chun Jin, Feng Wang
Summary: This study demonstrates the preparation of atomically precise platinum with scalable atoms ranging from 1 to 43, showing higher oxygen reduction reaction performance and utilization rate of platinum. The method may reduce the amount of platinum required for PEMFCs, opening up new horizons in designing efficient PGM catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yongxi Zan, Zhengping Zhang, Baoning Zhu, Meiling Dou, Feng Wang
Summary: Developing an ultrathin two-dimensional carbon nanosheet with more exposed N and P doping sites via ice/salt dual-template is an effective strategy for high-performance oxygen reduction reaction (ORR) electrocatalysts, which show outstanding performance in both alkaline and acidic electrolytes and in primary zinc-air batteries, offering new possibilities for non-precious metal electrocatalysts for ORR.
Article
Electrochemistry
Zepeng Jiang, Mengyue Liu, Feng Zhu, Weihao Song, Zhengping Zhang, Meiling Dou, Jin Niu, Feng Wang
Summary: This study investigates the energy-storage mechanisms of carbon electrodes in lithium-ion capacitors (LICs) using ginkgo leaf-derived porous carbons (GLPCs) as electrodes, achieving excellent performance by controlling porosities, heteroatoms, and defects. The assembled LIC with GLPC electrodes demonstrates high energy density, high power density, and long lifespan due to compatible electrode kinetics.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jingyu Guan, Shaoxuan Yang, Tongtong Liu, Yihuan Yu, Jin Niu, Zhengping Zhang, Feng Wang
Summary: The development of platinum-based oxygen reduction reaction electrocatalysts with good resistance to poisoning is crucial for practical fuel cell applications. A surface-engineering approach using alloy PtBi shells to prepare nanostructured Pt alloys showed significantly improved ORR performance compared to benchmark Pt/C, with enhanced tolerance to methanol and carbon monoxide. The observed enhancement in performance is attributed to increased compressive strain and charge displacement via Pt-Bi bonding.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Electrochemistry
Daping Qiu, Cheng Yue, Chuang Qiu, Liying Xian, Min Li, Feng Wang, Ru Yang
Summary: A three-dimensional dumpling-like glyururil-derived porous carbon@RGO composite with high reversible specific capacity, superb rate capability, and long lifespan is synthesized. The excellent sodium-ion storage properties of the composite are revealed through in-depth mechanism analysis.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yuanyuan Tian, Feng Li, Ye Song, Jingjun Liu, Jing Ji, Feng Wang
Summary: Metallic photoelectrocatalysts with wide light absorption range and fast hydrogen evolution reaction kinetics can be used as the next generation of catalysts. In this study, molybdenum nitride was synthesized on metal molybdenum substance via an in-situ growth method. The photocatalytic HER rate of Mo3N2 reached 158.78 μmol h(-1) g(-1). Furthermore, the Mo3N2-MoS2/Mo foil was prepared to improve the photoelectrocatalytic performance, showing a 1.5 times enhancement in photocurrent density compared to Mo3N2 alone.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Yaxin Duan, Haitao Liu, Huabing Zhang, Shaojie Ke, Shuaize Wang, Meiling Dou, Feng Wang
Summary: Poor electronic conductivity and low intrinsic electrocatalytic activity limit the direct application of metal organic frameworks (MOFs) in electrocatalysis. This study presents a conductive two-dimensional pi-d conjugated Ni and Co bimetal organic framework nanorod decorated with Co3O4 nanoparticles, which greatly enhances the electrocatalytic activity.
Article
Chemistry, Physical
Tongtong Liu, Shaoxuan Yang, Jingyu Guan, Jin Niu, Zhengping Zhang, Feng Wang
Summary: This study demonstrates a facile strategy to fabricate defect-rich yttrium ruthenate oxides by liquid nitrogen quenching, which preserves a large number of defects, including oxygen vacancies, grain boundaries, pores, and surficial disorder, as active sites for oxygen evolution. The resulting material shows excellent catalytic activity and high electrochemical stability, with potential applications in energy conversion and storage devices.
Article
Nanoscience & Nanotechnology
Feibin Wei, Tongtong Liu, Haixing Zhang, Zhengping Zhang, Feng Wang
Summary: This study improves the corrosion resistance and service life of Ti-based anodes by preparing a compact interlayer Ti-STN containing ternary metal oxides, and provides a new approach for the development of industrial electrolysis and electrochemical energy conversion devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yongzheng Shi, Na Yang, Jin Niu, Shubin Yang, Feng Wang
Summary: A rubber-derived lithium-conducting elastomer with high resilience and improved ionic conductivity has been developed by sulfur vulcanization of nitrile butadiene rubber with a polymerizable ionic liquid. The elastic lithium-conductor exhibits high resilience, excellent cyclic durability, and high room-temperature ionic conductivity, leading to a solid-state lithium/LiFePO4 battery with high capacity and capacity retention.
Article
Chemistry, Physical
Haitao Liu, Shaoxuan Yang, Jinyuan Ma, Meiling Dou, Feng Wang
Summary: This paper reports a method for synthesizing surface-engineered cobalt phosphide (CoxP) electrocatalyst, which has high-density reactive sites and facilitated charge/mass transport, leading to outstanding catalytic activity and excellent electrochemical durability towards oxygen evolution reaction.
Article
Electrochemistry
Rui Ma, Zhengping Zhang, Tomokazu Iyoda, Feng Wang
Summary: In this work, well-defined pyridinium-conjugated graphite sheets were synthesized via electrochemical grafting, exhibiting enhanced electrocatalytic performance for oxygen reduction and high selectivity for H2O2 production. The positive charge on the adjacent carbon atoms, induced by intramolecular charge transfer, leads to the improved catalytic activity. The functional groups on pyridinium also affect the yield of H2O2. The proposed electrochemical grafting provides a pyrolysis-free strategy for precise regulation of nitrogen-doped carbon materials and has great potential for various applications.
Article
Engineering, Environmental
Feng Zhu, Weishan Cao, Weihao Song, Jiaying Peng, Na Yang, Jin Niu, Feng Wang
Summary: In this study, porous carbons with honeycomb-like hierarchical structures and doped with P/N heteroatoms were prepared using a low-cost fish scale and K3PO4 as precursor and auxiliary. These materials showed high energy density, high power density, and long lifetime.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jing Chen, Shaoxuan Yang, Zhengping Zhang, Feng Wang
Summary: This study successfully synthesized a hierarchically structured electrocatalyst from biological waste, which exhibited superior activity for both oxygen reduction and oxygen evolution reactions. The zinc-air batteries assembled with this catalyst showed excellent electrochemical performance and long-term cycling stability. This integrated strategy provides an effective way for the development of novel nanostructured electrocatalysts from biological waste.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
