Article
Chemistry, Inorganic & Nuclear
Jiachen Ge, Yusuke Ohata, Atsushi Fukuda, Yuki Tokumoto, Takeshi Ohnishi, Takahiko Moteki, Masaru Ogura
Summary: This study reports the rapid one-pot synthesis of a unique core-shell-structured ZIF using Co(III) and Zn(II) precursors and discusses the growth mechanism of the synthesized ZIF particles and the differences between synthesized ZIF and conventional Co(II)-ZIF-67.
INORGANIC CHEMISTRY
(2022)
Article
Energy & Fuels
Kamakshaiah Charyulu Devarayapalli, S. V. Prabhakar Vattikuti, Jaewon Lee, Taewan Kim, Kiyoung Lee
Summary: In this study, a nanostructure composed of zeolitic imidazolate framework and vanadium-doped nickel hydroxide was proposed as a highly efficient and stable electrocatalyst for water splitting. The resulting nanostructure exhibited enhanced electrocatalytic activity, surface area, and pore volume, and demonstrated excellent performance in alkaline water electrolysis.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Jing Liang, Xutao Gao, Biao Guo, Yu Ding, Jiawei Yan, Zhengxiao Guo, Edmund C. M. Tse, Jinxuan Liu
Summary: The study reports the synthesis of two-dimensional metal-organic frameworks on nickel foam, which exhibit superior oxygen evolution reaction performance under alkaline conditions due to the ferrocene units acting as efficient electron transfer intermediates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Inorganic & Nuclear
Pandeng Zhao, Shaqi Fu, Lingli Cheng, Zheng Jiao, Minghong Wu
Summary: Oxygen evolution reaction (OER) is a crucial half-reaction in water splitting and its slow kinetic process limits the efficiency of electrocatalytic water. Therefore, developing high activity OER electrocatalysts is essential for the advancement of water splitting. Zeolitic imidazolate framework-67 (ZIF-67) based compositions, with nitrogen-containing ligands, highly dispersed Co active sites, abundant Co-N bonds, tunable pore structure, and large surface area, have received extensive attention in the preparation of non-noble electrocatalysts for OER. Various modification methods, such as coordination environment optimization, morphology engineering, heteroatom incorporation, heterostructure construction, and hybridization, have been developed to construct ZIF-67 based electrocatalysts and regulate their active sites. This article summarizes the advanced modulation strategies on ZIF-67 based compositions for OER performance enhancement, highlighting the synthetic approaches, engineering principles, and catalytic mechanisms. The current challenges and prospects for developing the next-generation OER electrocatalysts are also discussed.
COORDINATION CHEMISTRY REVIEWS
(2024)
Review
Chemistry, Physical
Yasir Arafat, Muhammad Rizwan Azhar, Yijun Zhong, Hussein Rasool Abid, Moses O. Tade, Zongping Shao
Summary: Secondary Zn-air batteries are considered as a promising power source for the future due to their low cost, high energy density, eco-friendliness, and high safety. However, their widespread implementation is hindered by the slow oxygen redox reactions. Developing cost-effective and highly efficient air electrodes to replace precious metals is highly challenging but desired.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Qingcui Liu, Jianhong Chen, Pan Yang, Feng Yu, Zhiyong Liu, Banghua Peng
Summary: By optimizing the molar ratio of Ni to Co, a bimetal 2-methylimidazole based 2D-MOF with 5% Ni/Co molar ratio was synthesized, showing excellent activity and good stability in OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Materials Science, Multidisciplinary
Yaling Jia, Ziqian Xue, Yinle Li, Guangqin Li
Summary: This review summarizes the latest research on MOFs-based electrocatalysts for hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reaction. It introduces the modification strategies of MOFs and their derivatives and discusses the recognition of active sites and functional mechanisms. Furthermore, the current status, challenges, and perspectives of MOFs-based electrocatalysts are also discussed.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Chemistry, Physical
Xin Zhang, Hongwei Pan, Yubao Jia, Yao Zhang, Zhigang Jiang, Chunjie Li, Xu Li, Lihong Bao, Ruguang Ma, Kuikui Wang
Summary: A selenylation method is used to modulate the morphology and interfaces of metal-organic frameworks (MOFs), forming flower-like MOF-selenide nanocomposites. The optimized sample shows high activity and stability, with improved reaction kinetics and long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Chemistry, Physical
Sakthivel Perumal, Hunwoo Yang, Junhyeok Seo
Summary: Electrocatalytic water splitting is a sustainable method for addressing current energy and climate issues, and research efforts are focused on developing low-cost, efficient, and durable electrocatalysts. Metal-organic framework-based materials, particularly ZIF-based materials, show great potential due to their porous morphology and conductivity. Recent reports suggest that ZIF structure can be modified electrochemically during OER to generate active species, and this opinion article highlights synthetic strategies and mechanistic studies to improve OER performance and durability of ZIF-based electrocatalysts. Future research perspectives on using ZIF-based materials for industrial-level OER catalyst design are also discussed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Review
Chemistry, Inorganic & Nuclear
Yupeng Han, Fei Wang, Jian Zhang
Summary: Zeolitic imidazolate frameworks (ZIFs) have been developed to mimic the structural characteristics of zeolites, with high surface area and adjustable pore size being their main features. The emerging hybrid zeolitic imidazolate frameworks (HZIFs) combine the advantages of zeolites and ZIFs, such as high stability and porosity. HZIFs find wide applications in electrocatalysis, photocatalysis, and ion storage, contributing to the progress in material chemistry, coordination chemistry, and structural chemistry.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
Han-Wool Jang, Gil-Seong Kang, Jong Yoon Lee, Seon Yeong Lee, Gwanwon Lee, Sung Jong Yoo, Sungho Lee, Han-Ik Joh
Summary: Metal-organic frameworks (MOFs) have limitations in mass transfer and interface formation, hindering their application as supports for single-atomic catalysts (SACs). In this study, a one-pot synthesis method was developed to prepare a Fe-N-C catalyst with hierarchically ordered mesoporous and macroporous structures. The catalyst exhibited excellent performance in the oxygen reduction reaction (ORR) and showed promise for use in membrane electrode assemblies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chenxi Hu, Huihui Jin, Bingshuai Liu, Lvhan Liang, Zhe Wang, Ding Chen, Daping He, Shichun Mu
Summary: The introduction of Vitamin C can effectively suppress the free metal ions on the surface of metal organic frameworks, increase Fe-N4 active sites, and enhance catalytic performance, demonstrating the universality of this strategy.
Article
Materials Science, Multidisciplinary
Min-Yu Li, Juan Liu, Ran Gao, Duo-Yu Lin, Fei Wang, Jian Zhang
Summary: Zeolitic tetrazolate-imidazolate frameworks (ZTIFs) are a new type of materials that enhance host-guest interactions and balance functionality and stability. Their diverse topological structures and promising applications in various fields make them a subject of growing interest.
MATERIALS TODAY ADVANCES
(2021)
Review
Chemistry, Inorganic & Nuclear
Preeti Kukkar, Ki-Hyun Kim, Deepak Kukkar, Pritpal Singh
Summary: Zeolitic imidazolate frameworks (ZIFs) belong to metal-organic frameworks (MOFs) or metalazolate frameworks (MAFs) with unique topologies, allowing for robust coordination and advantageous properties such as easy crystallization, high loading capacities, and good biocompatibility. Technical advancements in porous coordination polymers synthesis have diversified fabrication approaches for ZIFs, leading to the characterization of their structural and functional attributes.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Engineering, Environmental
Huijuan Wu, Weiqiong Zheng, Ran Zhu, Mi Zhou, Xiancheng Ren, Yinghan Wang, Chong Cheng, Hongju Zhou, Sujiao Cao
Summary: This article comprehensively summarizes and discusses the most important advances in engineering MOF nanoarchitectures for efficient water electrolysis. First, the methods of modulating the coordination structures and metal atom environments of MOF and MOF-derived catalysts are reviewed, and then their applications in water splitting are discussed based on the coordination structure and local atomic environment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Srinivas Gadipelli, Christopher A. Howard, Jian Guo, Neal T. Skipper, Hong Zhang, Paul R. Shearing, Dan J. L. Brett
ADVANCED ENERGY MATERIALS
(2020)
Article
Energy & Fuels
Zhuangnan Li, Srinivas Gadipelli, Hucheng Li, Christopher A. Howard, Dan J. L. Brett, Paul R. Shearing, Zhengxiao Guo, Ivan P. Parkin, Feng Li
Correction
Energy & Fuels
Zhuangnan Li, Srinivas Gadipelli, Hucheng Li, Christopher A. Howard, Dan J. L. Brett, Paul R. Shearing, Zhengxiao Guo, Ivan P. Parkin, Feng Li
Article
Nanoscience & Nanotechnology
Juntao Li, Zhu Meng, Dan J. L. Brett, Paul R. Shearing, Neal T. Skipper, Ivan P. Parkin, Srinivas Gadipelli
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
K. Vasanth Kumar, Kiran A. Ramisetty, K. Renuka Devi, Gamidi Rama Krishna, Claire Heffernan, Andrew A. Stewart, Jian Guo, Srinivas Gadipelli, Dan J. L. Brett, Evangelos P. Favvas, Ake C. Rasmuson
Summary: Crystallization experiments on highly supercooled solutions produced highly pure and crystalline mesocrystals of curcumin, exhibiting a crystallographic hierarchy. The formation of spherulites is attributed to the high degree of supercooling and particle-mediated crystallization is proposed as an efficient method for organic compound purification.
Article
Chemistry, Physical
Srinivas Gadipelli, Jian Guo, Zhuangnan Li, Christopher A. Howard, Yini Liang, Hong Zhang, Paul R. Shearing, Dan J. L. Brett
Summary: By analyzing and optimizing commonly applied electrode fabrication methods, this study demonstrates the key factors that control the capacitance performance of RGO electrodes. It is found that the electrode preparation method can lead to significant differences in capacitance values, with variations of over 100%. By optimizing the electrode processing method, a direct relationship between the surface area of RGO structures and capacitance is revealed.
Article
Materials Science, Multidisciplinary
Srinivas Gadipelli, Hanieh Akbari, Juntao Li, Christopher A. Howard, Hong Zhang, Paul R. Shearing, Dan J. L. Brett
Summary: Supercapacitors made from porous carbon and graphene-oxide show variations in capacitance values, ranging from 25 to 350 F g(-1). This study demonstrates the importance of structure-controlled charge storage relationships and establishes the link between oxygen functional concentration and capacitance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mayank Vashistha, Caoilfhionn Cliffe, Emma Murphy, Parimaladevi Palanisamy, Andy Stewart, Srinivas Gadipelli, Christopher A. A. Howard, Dan J. L. Brett, K. Vasanth Kumar
Summary: Crystallisation is an important process in pharmaceutical industries for purifying active pharmaceutical ingredients. The randomness and variation in this process make it difficult to regulate and predict the yield from batch to batch. In this study, a new technique called dotted crystallisation was proposed, where carbon dots were used to control nucleation and crystallisation processes. By adding small quantities of carbon dots to a supersaturated solution of curcumin, the nucleation rate of curcumin can be regulated and improved, leading to smaller crystals with a narrow size distribution compared to conventional cooling crystallisation.
Article
Chemistry, Multidisciplinary
K. Vasanth Kumar, Srinivas Gadipelli, Kiran A. Ramisetty, Claire Heffernan, Andrew A. Stewart, Vivek Ranade, Chris Howard, Dan Brett
Summary: During crystal growth in impure solution, impurities can hinder the growth process and slow down or even stop crystal growth. In this study, we discovered that curcumin crystals can grow in impure solution containing similar impurities, following a non-classical crystallisation pathway. We found that at high impurity concentrations, crystals can grow through sympathetic nucleation, where new growth surfaces form on seed crystals. These new surfaces act as active growth surfaces and play a crucial role in determining the crystal growth kinetics, especially at lower supersaturations. Additionally, creating artificial macrosteps on the crystal surface can not only accelerate the crystallisation rate but also control impurity transfer into the bulk crystals.
Article
Chemistry, Multidisciplinary
Jinyi Chen, Jian Guo, Hong Zhang, Dan J. L. Brett, Srinivas Gadipelli
Summary: This study demonstrates a simple and efficient synthesis route to convert commercially available low-cost conducting carbon black materials into functional electrocatalytic electrode media. By growing a non-precious cobalt metal-based zeolitic-imidazolate framework (ZIF-67) at room temperature in methanol solution and mild thermolysis, Co@CoOx nanoparticle decorated nitrogen-doped carbon derived from zeolitic-imidazolate framework (ZIF-67)@Ketjenblack shows impressive oxygen electrocatalytic activity in alkaline electrolyte, comparable to or even better than many metal@metal-oxide-carbon based electrocatalysts synthesized under more complex conditions.
Article
Chemistry, Physical
K. Vasanth Kumar, Srinivas Gadipelli, Christopher A. Howard, Witold Kwapinski, Dan J. L. Brett
Summary: The binding affinity distribution plays a crucial role in molecular recognition in chromatographic separations and gas storage and separation applications. This study develops universal analytical models based on Toth isotherms to accurately characterize different classes of industrially-important adsorbents.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Physical
K. Vasanth Kumar, Srinivas Gadipelli, Barbara Wood, Kiran A. Ramisetty, Andrew A. Stewart, Christopher A. Howard, Dan J. L. Brett, F. Rodriguez-Reinoso
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Yudao Qin, Xiaoyu Han, Srinivas Gadipelli, Jian Guo, Shijie Wu, Liqun Kang, June Callison, Zhengxiao Guo
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
