Article
Chemistry, Physical
Dexuan Li, Guoshen Zeng, Yaoyao Wu, Zhenyu Zhou, Wei Guo, Chuanhao Li
Summary: Co-catalysts engineering, especially the non-noble traditional metal dichalcogenides, shows great potential in promoting photocatalytic water splitting for hydrogen gas production. In this study, a novel Au induced 1T-MoS2 modified S-doped-g-C3N4 photocatalyst was constructed, which exhibited significantly enhanced photocatalytic hydrogen evolution rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Guanyu Wu, Zhao Mo, Peipei Sun, Zhuocheng Cao, Xianglin Zhu, Yanhua Song, Yuechang Wei, Xiaojie She, Huaming Li, Hui Xu
Summary: By combining theoretical calculations and experimental characterization, the research investigates the transfer process of photogenerated carriers and reveals the photocatalytic mechanism in Cu3N/2D CN composite catalyst, enhancing the performance of photocatalytic hydrogen evolution reaction (HER).
MATERIALS TODAY ENERGY
(2022)
Article
Engineering, Environmental
Long Chen, Xiang Liang, Haixia Wang, Qinqin Xiao, Xiaoqing Qiu
Summary: A simple and green method is developed to fabricate ultra-thin graphite carbon nitride nanosheets, which possess a large specific surface area, a thin nanosheet structure, and exhibit excellent photocatalytic hydrogen evolution performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Wen-Chen Zhou, Wei-De Zhang
Summary: This study presents the design of a novel non-noble metal composite photocatalyst for efficient hydrogen evolution under visible light irradiation by covalently linking nickel molecular ligand to the graphitized carbon nitride framework. The modified photocatalyst exhibits excellent carrier migration rate and high stability without the need for platinum as a co-catalyst. Experimental and theoretical analyses indicate that the ligand-metal charge transfer mechanism plays a key role in enhancing the photocatalytic activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
H. J. Yashwanth, Sachin R. Rondiya, Nelson Y. Dzade, Robert L. Z. Hoye, Ram J. Choudhary, Deodatta M. Phase, Sanjay D. Dhole, K. Hareesh
Summary: In this work, a nitrogen and phosphorus co-doped carbon quantum dots and TiO2 nanoparticles composite photocatalyst was developed, which exhibited enhanced visible light photocatalytic hydrogen production. The excellent synergy between NPCQDs and TiO2 nanoparticles resulted in the generation of virtual energy levels and the suppression of electron recombination rates, thereby increasing the lifetime of photogenerated electrons.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Peng Zeng, Wei-De Zhang
Summary: The study successfully designed an extremely active molecular complex cocatalyst NiL2(Cl)(2), which, when covalently linked to thiophene-embedded polymeric carbon nitride (TPCN), showed exceptional hydrogen production activity. The results indicated that embedding pi-electron-rich thiophene-ring enhanced visible light absorption and promoted charge separation, leading to accelerated electron transfer and the potential development of excellent photocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xiangli Shi, Qiong Zhang, Yimeng Zhou, Qianjin Ye, Deli Jiang, Dan Tian, Di Li
Summary: Au nanoparticle modified B/K co-doped CN photocatalyst can greatly enhance the photocatalytic CO2 reduction activity by promoting exciton dissociation, charge transport, interfacial charge transfer, and providing reactive sites for CO2 reduction.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Xue Zhang, Chuanjun Xi, Yuanhang Yue, Puhui Deng, Linping Zhang, Yu Hou
Summary: By modifying g-C3N4 with coral-like NiSe2, a composite photocatalyst with high efficiency was prepared, which greatly enhances the photocatalytic performance of g-C3N4 and achieves efficient photocatalytic hydrogen generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Hu Wang, Jiake Xu, Juan Xie, Chenjie Wang, Penghui Bai
Summary: This study demonstrated that loading nickel particles on the surface of graphene and Cabot conductive carbon black Vxc-72 can enhance the hydrogen evolution performance. Particularly, Ni/Graphene exhibited excellent catalytic activity and stability in 1.0 M KOH media.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jixian Wang, Lei Li, Shan Jiang, David J. Young, Zhi-Gang Ren, Hong-Xi Li
Summary: This study presents a series of SH-group-functionalized covalent organic frameworks (COFs) as prospective photoactive materials for photocatalytic hydrogen evolution. The use of nickel thiolate as a cocatalyst significantly enhances the hydrogen evolution rate.
Article
Chemistry, Physical
Shuang Tang, Yang-Sen Xu, Xue-Lian Hu, Wei-De Zhang
Summary: The photocatalytic performance of polymeric carbon nitride (CN) is improved by attaching thiophene ring and polar nickel complex (NiL). The resulting bifunctionalized carbon nitride (TCN-NiL) shows enhanced optical absorption and photoexcited charge separation efficiency. TCN-NiL exhibits platinum-like hydrogen evolution activity from water splitting under visible light, and achieves a photocatalytic H2 generation rate of 136.7 μmol•h(-1) without any cocatalyst, the highest rate reported so far in noble-metal-free CN-based catalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Applied
Liang Jian, Huizhen Zhang, Bing Liu, Chengsi Pan, Yuming Dong, Guangli Wang, Jun Zhong, Yongjie Zheng, Yongfa Zhu
Summary: Monodisperse transition metal Ni-clusters were anchored on carbon nitride (CN) using an in situ photoreduction deposition method to achieve efficient separation of photogenerated charges and high-efficiency photocatalytic activity for hydrogen evolution. The interface interaction mechanism between Ni-clusters and CN is revealed through theoretical and experimental studies.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Zehao Li, Yufei Chen, Yuxuan Guo, Yanan Wang, Tong Guan, Jiaxin Bai, Dan Hu, Huilin Li, Jimin Du
Summary: In this study, carbon nitride with an ultra-thin porous structure was successfully synthesized using the supramolecular self-assembly method. The modified carbon nitride exhibited excellent H2O2 production activity and Rhodamine B degradation activity, making it a promising candidate for the removal of organic contaminants in water.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jiawei Zhang, Yuying Dang, Wei Wang, Haijuan Zhan, Xudong Song, Baojun Ma
Summary: A novel composite co-catalyst (Pt/MoP)/g-C3N4 was designed and prepared to enhance the photocatalytic efficiency. By utilizing MoP as an electron storage and Pt as proton reduction sites, the photocatalyst activity was effectively improved, offering a new approach to reduce the use of noble metal in photocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jinfeng Tian, Xing Wen, Wenfeng Hu, Li Luo, Wei Wang, Keying Lin, Haijuan Zhan, Baojun Ma
Summary: As a non-noble metal co-catalyst, Nitrides have been widely studied for their cost-effective and highly efficient photocatalytic hydrogen production. In this study, a novel composite co-catalyst of Au/Ta3N5 was developed, greatly enhancing the activity of CdS in photocatalytic hydrogen production. The (Au/Ta3N5)/CdS photocatalyst showed an activity that is 7.3 times higher than bare CdS and 2.2 times higher than Ta3N5/CdS. The capacitance catalysis effect of Ta3N5 contributed to the improved charges separation and storage of photoexcited electrons from CdS, while Au served as an active site for proton reduction to further enhance the activity.
Review
Chemistry, Multidisciplinary
Jiahao Liu, Weiliang Qi, Mengmeng Xu, Tiju Thomas, Siqi Liu, Minghui Yang
Summary: Rapid industrialization has led to the accumulation of various environmental pollutants, which poses a threat to the ecological environment of the earth. Environmental remediation has become a priority, and piezocatalytic techniques have gained attention for their unique ability to utilize the piezoelectric effect. This review provides a comprehensive summary of recent developments in piezocatalytic techniques for environmental remediation, including the origin of the piezoelectric effect, classification of piezoelectric materials, their application, and potential mechanisms. Urgent problems and future development of piezocatalytic techniques are also discussed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Ceramics
Manchala Venkatesh, G. Sudha Priyanga, Sonia Sharma, P. Laxman Mani Kanta, Tiju Thomas, R. Gopalan, Bijoy Das
Summary: The effect of Fe and Co co-doping on the electrochemical cyclic stability of Na0.67MnO2 cathode material was investigated, and it was found that the co-doped material exhibits improved cyclic stability and higher discharge specific capacity.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Siqi Liu, Weiliang Qi, Jue Liu, Xiangjian Meng, Samira Adimi, J. Paul Attfield, Minghui Yang
Summary: The synthesis of transition metal (M = V, Mo, and W) doped cobalt nitride catalyst for solar to hydrogen energy conversion is reported. The as-prepared cobalt nitride was found to contain lattice defects. M-doping improved charge carrier separation efficiency and reaction kinetics by altering the electronic structure and properties of cobalt nitride. The optimal V-Co3.75N0.14-Eosin-Y system exhibited a hydrogen evolution rate of 21.21 μmol·mg-1·h-1 and a quantum efficiency of 38% at 405 nm excitation wavelength, surpassing previous hybrid photocatalysts.
Review
Chemistry, Multidisciplinary
Weiliang Qi, Huan Wang, Jiahao Liu, Tiju Thomas, Siqi Liu, Minghui Yang
Summary: Solar energy harnessing and conversion is a hot research topic, and photo(electro)catalysis is one of the methods for progress. Cobalt-based nitrides with excellent catalytic properties and unique electronic structure have attracted attention in the field of solar energy conversion. This article mainly focuses on the application of cobalt-based nitride catalysts in photo(electro)catalytic solar energy conversion. The classification of cobalt-based nitrides, their synthesis strategies, and the latest advances of cobalt-based nitrides in various functional roles in solar energy conversion are discussed. Finally, the challenges and opportunities in cobalt-based nitride photoelectrocatalysts are summarized.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Electrical & Electronic
Garima Gupta, U. Naveen Kumar, Nasima Khatun, Tiju Thomas, Somnath C. Roy
Summary: The effect of two surfactants, urea and hexamethylenetetramine (HMTA), on the morphology and performance of ZnCo2O4 in supercapacitor and oxygen evolution reaction (OER) was studied. Urea-derived urchin-like morphology showed higher specific capacity and lower overpotential compared to HMTA-derived hexagonal sheet-type morphology. This suggests that the use of urea as a surfactant leads to better electrochemical performance in ZnCo2O4.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Arsha Antony, Tiju Thomas, Cyril Augustine
Summary: Iron is an essential metal for living organisms, but its distribution in tissues is constrained. Insolubility of Fe(III) ions in aqueous systems reduces direct uptake by cells, while free-Fe entities can lead to cell destruction. Therefore, a protective coordination environment is necessary for Fe acquisition, transport, storage, and utilization in tissues. Siderophores are polydentate ligands used by bacterial cells to acquire Fe(III) ions with a high affinity. This research focuses on the coordination chemistry of the siderophore cepabactin (Cep), confirming that the Fe-III(Cep)(3) complex is octahedral and high spin, with Cep's oxygen atoms acting as electron donors.
JOURNAL OF MOLECULAR MODELING
(2023)
Article
Nanoscience & Nanotechnology
Siqi Liu, Weiliang Qi, Jiahao Liu, Xuyun Guo, Haichuan Guo, Tiju Thomas, Ye Zhu, Minghui Yang
Summary: In this study, a flower-like cobalt nitride nanowires catalyst is used to achieve efficient sonocatalytic hydrogen production in various water resources. The cobalt nitride nanowires have nitrogen-vacancy nanostructures and acid/alkali resistance, enabling hydrogen production in acidic water, alkaline water, seawater, and wastewater. The catalyst also displays excellent stability and reusability during the sonochemical catalytic reaction.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Shuqin Liang, Huashuai Hu, Jue Liu, Hangjia Shen, Qiao Li, Nianxiang Qiu, HaiChuan Guo, Xuyun Guo, Shiyu Du, Ye Zhu, Jian Liu, J. Paul Attfield, Minghui Yang
Summary: A novel superhydrophilic catalyst of nickel supported on nickel molybdenum nitride (Ni/Ni0.8Mo4.2N6) has been found to outperform platinum-based nanomaterials in the hydrogen evolution reaction (HER) for water electrolysis. The optimized composite of this catalyst exhibits exceptional HER activity, with significant increases in the exchange current and turnover frequency compared to commercial Pt/C. Density of states calculations reveal that the supported nickel in Ni/Ni0.8Mo4.2N6 has a lower electron density, leading to a decrease in the free energy of the HER.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Energy & Fuels
Anit Joseph, Sneha Perikkathra, Tiju Thomas
Summary: Enhancing the performance and durability of metal catalysts through the use of nanostructured non-metallic materials is an active and exciting area of research. The 2D CeO2 nanoflakes were characterized and found to have a high specific capacitance and a modest surface area. Assembled into an asymmetric supercapacitor device, the CeO2 nanoflakes exhibited good performance and retained 83% capacitance after 1000 cycles. This study demonstrates the promising potential of CeO2 as an electrode material for energy storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Environmental Sciences
Sangeeth John, Sasikaladevi Rathinavelu, Sagayanathan Monica Susai Mary, Indumathi Manivannan Nambi, Sridharan Moorthy Babu, Tiju Thomas, Shubra Singh
Summary: This study proposes an efficient strategy for degrading the persistent antibiotic contaminant, ciprofloxacin (CIP). A hybrid advanced oxidation process (HAOP) is tailored with a synergy effect between photocatalysis and photo-Fenton catalysis on a zinc ferrite-titania heterostructured composite (ZFO-TiO2). The results show that the HAOP system significantly enhances the degradation rate of CIP, outperforming conventional TiO2-based photocatalysis. The study also identifies the intermediates and degradation pathways of CIP, and demonstrates the reduced toxicity of the photodegraded samples.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Weiliang Qi, Zhixing Cheng, Siqi Liu, Minghui Yang
Summary: Transition metal nitrides have shown significant potential as materials for solar energy conversion, particularly in photocatalysis. This perspective provides a comprehensive analysis of their properties and discusses design strategies to enhance their efficiency and stability. The article also highlights future directions for the development of transition metal nitride-based photocatalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Proceedings Paper
Engineering, Civil
Subrahmanyam Gantasala, Tiju Thomas, Prabhu Rajagopal
Summary: This paper proposes a Phononic crystal (PnC) device for energy harvesting by embedding spheres in a polymer matrix. The study shows that introducing a defect within the PnC creates strong vibrational modes and energy localization. By attaching a small patch of piezoelectric material onto the PnC device exactly above the defect, a highly localized vibrational eigen mode is observed. Simulations demonstrate the voltage response of the device, confirming the usefulness of the concept.
EUROPEAN WORKSHOP ON STRUCTURAL HEALTH MONITORING (EWSHM 2022), VOL 3
(2023)
