Article
Chemistry, Physical
Lavanya Thirugnanam, Manikandan Palanisamy, Satheesh Kaveri, Sundara Ramaprabhu, Vilas G. Pol, Mrinal Dutta
Summary: TiO2 nanoparticles decorated nitrogen-doped helical carbon nanofiber-carbon nanotube hybrid material with high specific surface area and nanoporous structure was prepared by low-cost electrospinning and hydrothermal method. The hybrid material showed higher reversible charge capacities compared to conventional graphite microbeads anode, indicating better performance than graphite for LIBs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Sang Ho Lee, Chun Huang, Patrick S. Grant
Summary: Through discrete layering and optimized electrochemical behavior, a multi-layered composite electrode was utilized to explore new capacity-power combinations, showing remarkable rate capability and energy density in both lithium ion batteries and capacitors.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yijie Wang, Jialin Bian, Weina Ren, Chuanwei Cheng
Summary: The study presents a facile strategy to prepare H-CoP-NPs@CNTs on flexible carbon cloth, exhibiting remarkable electrochemical performances as free-standing sodium ion battery anodes. The excellent performance can be attributed to the unique 1D hybrids nanoarrays structures providing more free spaces and active sites for favorable Na+ insertion/extraction, along with improved conductivity and structural integrity by CNTs nanoarrays on flexible carbon cloth. Additionally, the 1D hybrids network enhances rapid ion/electron transport and rate performance.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Electrochemistry
Luo Wei, Qingtao Yu, Xiaoyong Yang, Ji-Hui Li, Wanci Shen, Feiyu Kang, Ruitao Lv, Liqiang Ma, Zheng-Hong Huang
Summary: In this study, a hybrid of nano-SnO2 and moderately exfoliated graphite (MEG) coated with amorphous carbon (SnO2/MEG@C) was designed to overcome the low coulombic efficiency, low conductivity, and large volume expansion of SnO2. The interaction between MEG and carbon coating effectively hindered Sn coarsening and maintained rapid mutual diffusion kinetics, resulting in high-efficiency conversion reaction and excellent reversibility and cyclicity of SnO2. The SnO2/MEG@C electrode exhibited a high capacity of 691.4 mAh g(-1) after 900 cycles at 1.0 A g(-1).
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yayi Cheng, Hui Xie, Fangli Yu, Jinlong Zhang, Yongfeng Wang, Xiaomin Luo, Bingyao Shi, Boyang Liu
Summary: A simple method of fabricating three-dimensional porous carbon through freeze drying and organic calcination was reported. The resulting SnO2/C composite, with SnO2 nanoparticles chemically bonded on the carbon surface, showed superior electrochemical performance compared to bare SnO2. The composite exhibited high reversible capacity, excellent rate capability, and cycling performance, attributed to the designed structure and 3D porous carbon.
Article
Chemistry, Physical
Jia Hou, Xinxia Yang, Xingguang Fu, Dawei Zou, Jun Ma, Yi Peng, Yifan Liu, Xian Jian
Summary: In this study, highly oriented carbon nanotube arrays (CNTAs) were used as cathode materials in Li/CFx batteries, demonstrating excellent electrochemical performances. The optimal cathode material FCNTA-500 exhibited high specific capacity and energy density at low discharge rates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Hongyan Zhou, Mengjing Jin, Bojian Zhou, Jianguo Zhao, Weihua Han
Summary: The composite material of SnO2/MoO3 at a 1:1 ratio showed exceptional electrochemical performance after 300 cycles, attributed to its unique 3D porous structure. The addition of graphene improved electrical conductivity, resulting in better electrochemical performance of SnO2/MoO3@Graphene composite material.
Article
Multidisciplinary Sciences
T. M. M. Heenan, I. Mombrini, A. Llewellyn, S. Checchia, C. Tan, M. J. Johnson, A. Jnawali, G. Garbarino, R. Jervis, D. J. L. Brett, M. Di Michiel, P. R. Shearing
Summary: This study characterizes the temperature and mechanical strain of high-rate lithium-ion batteries using advanced synchrotron XRD methods. The results show that the discharge time and optimization strategy significantly affect the internal temperature of the battery under the same current. The temperature rise is caused by heat accumulation, which is influenced by the charging protocol and battery degradation.
Article
Chemistry, Physical
Xinxia Yang, Longwei Wu, Jia Hou, Benyang Meng, Rashad Ali, Yifan Liu, Xian Jian
Summary: A high-yield production method using FeSiAl micro-flake catalyst for direct symmetrical growth of CNT arrays was developed, which showed ultra-high catalytic efficiency. The growth kinetics and mechanism were investigated by carefully considering reaction temperature and time. CNT arrays have the potential for application as conductive additives in high energy density ternary cathode materials.
Article
Chemistry, Physical
K. P. Lakshmi, R. Deivanayagam, M. M. Shaijumon
Summary: A composite of antimony oxide microstructures encapsulated in graphene aerogel, interconnected by a network of carbon nanotubes, shows excellent electrochemical performance as an anode for sodium and lithium ion batteries. The unique star-shaped Sb2O3 microstructures are synthesized through a facile hydrothermal method, exhibiting stable specific capacity over 100 cycles. The study investigates the reaction kinetics upon sodiation and attempts to probe the underlying electrochemical charge storage mechanism using ex-situ techniques.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Shuling Liu, Kang Feng, Wenxuan Xu, Xiaoqiang Shi, Zheng Xu, Chao Wang
Summary: Composites of cobalt selenide nanoparticles, carbon nanotubes, and reduced graphene oxide have been successfully prepared and used as electrode materials for lithium and sodium ion batteries. The composite exhibits high reversible specific capacity and improved ion diffusion and charge transfer resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Jing Wang, Haowen Liu, Hengcai Wu, Qunqing Li, Yuegang Zhang, Shoushan Fan, Jiaping Wang
Summary: Research shows that using carbon nanotube aerogels coated with amorphous carbon can improve the practical application of lithium metal anodes by providing a solid structure to reduce local current density, suppress lithium dendrites growth, and achieve better electrochemical performance.
Article
Chemistry, Physical
JiongJian Gao, Kaidan Wu, Yefeng Feng, Xiaoqian Deng, Yukun Sun, Weiyi Xu, Miao He
Summary: SnO2/Fe2O3/graphene nanocomposite material prepared by ball milling exhibits excellent electrochemical performance and cycling stability.
Article
Chemistry, Physical
Changsheng Song, Baoxun Zhao, Siyu Chen, Jinyang Ma, Hongbin Du
Summary: A new method for preparing silicon-nickel-carbon composites with high mechanical strength and ion diffusivity has been developed, improving the performance of lithium-ion batteries. The composites show stable performance during long-term cycling and exhibit better capacity retention compared to conventional materials.
Article
Energy & Fuels
Diganta Saikia, Juti R. Deka, Yu-Hao Zeng, Hung-Cheng Hsu, Yi-Ching Chen, Hsien-Ming Kao, Yung-Chin Yang
Summary: A new nanocomposite system based on Ni-doped Mn3O4 nanoparticles embedded in a three-dimensional porous carbon nanopipes framework CMK-5 is developed and evaluated as an anode for rechargeable batteries. The nanocomposite exhibits outstanding discharge capacity and cycle performance for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), demonstrating its promising potentials as an anode material.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Meihua Hong, Subin Lee, Van-Chuong Ho, Daon Lee, Seung-Ho Yu, Junyoung Mun
Summary: The electrochemical behavior of SEI formed by LiBOB on LCO is investigated at different cutoff voltages. LiBOB can suppress side reactions by forming SEI, but the SEI decomposes at high voltages, causing a decrease in electrochemical performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Jeesoo Seok, Jae-Hwan Hyun, Aihua Jin, Ji Hyun Um, Hector D. Abruna, Seung-Ho Yu
Summary: Due to the abundance and cost effectiveness of sodium, rechargeable sodium metal batteries have attracted widespread attention as a potential replacement for lithium-ion batteries. However, challenges such as the reactivity of sodium, unstable solid-electrolyte interphase (SEI), and sodium dendrite formation remain unresolved. This study investigates the mechanistic behavior of sodium metal plating using operando X-ray and optical imaging techniques. The addition of a fluorine-containing additive to the electrolyte results in more uniform sodium plating and enhanced cycling performance due to the formation of a stable SEI containing NaF.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Ji Hyun Um, Aihua Jin, Xin Huang, Jeesoo Seok, Seong Soo Park, Janghyuk Moon, Mihyun Kim, So Hee Kim, Hyun Sik Kim, Sung-Pyo Cho, Hector D. Abruna, Seung-Ho Yu
Summary: This study directly visualizes the dissolution and deposition reactions of selenium cathodes and builds a nucleation site distribution map. It reveals the nucleation behavior dependent on the depletion of polyselenides and morphological characteristics, with particle-like Li2Se forming upon discharge and dendritic Se forming upon charge. Prioritizing nucleation over growth can effectively utilize selenium and prevent dendritic growth.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Jin Hwan Kwak, Yunseo Jeoun, Si Hyoung Oh, Seungho Yu, Jae-Hong Lim, Yung-Eun Sung, Seung-Ho Yu, Hee-Dae Lim
Summary: Investigations on Mg dendrite behaviors in rechargeable Mg-metal batteries are crucial for clarification and proposing new strategies for regulating dendrite growth. The study elucidates the effects of applied current density and capacity utilization on Mg growth behaviors, as well as demonstrates the effectiveness of magnesiophilic seeds in suppressing Mg dendrite growth.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Seoin Back, Seung-Ho Yu, Yuanzhe Piao, Juhyung Choi, Aihua Jin, Hyun Dong Jung, Dongjin Ko, Ji Hyun Um, Yoon Choi, So Hee Kim
Summary: This study presents a novel nanoarchitecture of nitrogen and sulfur co-doped graphene nanoribbons, which exhibit high capacity and stable cycling performance as anodes for potassium-ion batteries. Theoretical calculations demonstrate that graphene nanoribbons with NS co-doping have improved potassium-ion intercalation properties compared to parallel-edged nanoribbons.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Yunseo Jeoun, Kookhan Kim, Shin-Yeong Kim, Si-Hwan Lee, Sung-Ho Huh, So Hee Kim, Xin Huang, Yung-Eun Sung, Hector D. Abruna, Seung-Ho Yu
Summary: The growth of dendritic Li during repeated plating/stripping reactions has been a major obstacle for the commercialization of Li metal anode. However, this study introduces a novel approach using a combination of solvents and a LiPF6 salt to induce homogeneous Li growth, which shows promising potential for practical applications.
ACS ENERGY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Ji Hyun Um, Seong-Jun Kim, Jae-Hwan Hyun, Mihyun Kim, Si-Hwan Lee, Seung-Ho Yu
Summary: This article reviews the nucleation and growth behaviors of metal (Li, Na, and Mg) anodes and chalcogen (S and Se) cathodes, and overviews the morphological evolutions on the electrode surface and interface by in situ/operando visualizations. Through experimental verification, the complex and dynamic nucleation and growth behaviors of metal and chalcogen electrodes are validated by in situ/operando visualization methods, aiming to contribute to supporting the fundamental knowledge for the development of high-energy-density metal and chalcogen electrodes.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Tae-Yeol Jeon, Han-Koo Lee, Geon-Hee Yoon, Si-Hwan Lee, Hyung Joong Yun, Ki-Jeong Kim, Kug-Seung Lee, Nicola Pinna, Seung-Ho Yu
Summary: Changes in electronic and compositional structures of Pt-Ni electrocatalysts with 44% of Ni fraction have been studied using repeated chemical dealloying. Comparisons of different leaching agents showed that hydroquinone generated Pt-enriched surfaces with the highest oxygen reduction reaction activity. Traditional acid leaching is unsuitable for Pt-Ni alloys with high Ni content and incomplete alloying level.
Article
Multidisciplinary Sciences
Ban Seok Lee, Sang-Hwan Oh, Yoon Jeong Choi, Min-Jeong Yi, So Hee Kim, Shin-Yeong Kim, Yung-Eun Sung, Sun Young Shin, Yongju Lee, Seung-Ho Yu
Summary: Silicon monoxide (SiO) is a suitable material for high-energy density lithium-ion batteries (LIBs) due to its better cyclability and higher capacity. However, when incorporated into a stable graphite anode, SiO accelerates the loss of lithium inventory and lithium de-intercalation from graphite under thermal exposure. This self-discharge phenomenon is a result of preferential parasitic reaction on the SiO interface and spontaneous electron and lithium-ion migration. Understanding this electron-level interplay between graphite and SiO can improve the shelf life of SiO-containing LIBs in actual operating conditions.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Eun-Seo Lee, Sung-Ho Huh, Si-Hwan Lee, Seung-Ho Yu
Summary: Li, Na, and K metal anodes are promising for post Li ion batteries, but suffer from dendritic growth and high price. Mg, Ca, and Al are alternative multivalent metal anodes with uniform growth and abundance. Multivalent metal deposition/stripping reactions enable high volumetric capacity. This review focuses on the metal deposition mechanism of individual multivalent metals and strategies for inhibiting dendritic growth.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Jae-Hwan Hyun, Min-Jeong Yi, Hyejin Jung, Si-Hwan Lee, Ji Hyun Um, Seung-Ho Yu
Summary: This study explores the processes that significantly impact Coulombic efficiency and overpotential, and provides a comprehensive understanding of these factors from the perspective of time, offering new insights into the performance of Li metal batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sunghee Shin, Jin Hwan Kwak, Si Hyoung Oh, Hyung-Seok Kim, Seung-Ho Yu, Hee-Dae Lim
Summary: This study proposes a simple and effective method to address the critical issue of native oxide layer formation on the Mg-metal interface in Mg-metal batteries (MMBs). By forming a Ga-rich protective layer on Mg metal, MMBs can be operated reversibly in combination with Mg-(TFSI)(2)-diglyme electrolyte. The artificial protective layer significantly reduces high polarization during Mg plating and stripping in diglyme-based electrolyte, enabling stable cycling for over 200 hours.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
A-Re Jeon, Seungyun Jeon, Gukhyun Lim, Juyoung Jung, Woo Joo No, Si Hyoung Oh, Jihyun Hong, Seung-Ho Yu, Minah Lee
Summary: Rechargeable magnesium batteries with higher energy density and safety have practical potential, but they face obstacles due to passivation or corrosion issues. However, a chemical activation strategy using simple salt electrolytes has been developed, which successfully improves the performance of the magnesium anode and enables stable cycling over 990 cycles. This activation strategy opens up possibilities for the practical implementation of magnesium batteries using commercially available electrolytes.
Article
Nanoscience & Nanotechnology
Ji Hwan Kim, Juncheol Hwang, Young-Hoon Lee, Seok Hyun Song, Jaewoon Lee, Si-Hwan Lee, Won-Jin Moon, Hyungsub Kim, Duho Kim, Seung-Ho Yu, Yung-Eun Sung
Summary: The use of elemental doping improves the performance of lithium cobalt oxide cathode material, but there is still a lack of fundamental understanding regarding the rationality of each doping element. This study demonstrates that titanium doping can enhance the thermodynamic stability and kinetics of lithium ions during the cycling process, improving the rate performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Minhyung Kwon, Jina Lee, Sunghyun Ko, Gukhyun Lim, Seung-Ho Yu, Jihyun Hong, Minah Lee
Summary: This study successfully constructs a stable zinc metal anode by identifying the growth mechanism of densely packed micrometer-sized Zn particles on Cu foil, which contributes to improving the performance of aqueous Zn-ion batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)
