Article
Chemistry, Multidisciplinary
Xiaobin Xie, Marijn A. van Huis, Alfons van Blaaderen
Summary: A new method for synthesizing Au NP@mSiO(2) yolk-shell particles with tunable size and hollow space is proposed, the structure can be manipulated from core-shell to yolk-shell by varying reaction parameters, and the release of Au nanotriangle cores in yolk-shell particles was demonstrated through liquid-cell transmission electron microscopy.
Article
Chemistry, Physical
Ji Hwan Jeong, Hee-Jo Lee, Myung Hwa Kim, Bo-Hye Kim
Summary: This study aims to enhance the surface redox reactions of MnO2 by designing hollow carbon nanofibers, leading to optimized electrochemical performance. The PPMMn symmetrical supercapacitors demonstrate excellent capacitive behavior, long-term cycling stability, and potential for energy storage applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xuan-Hung Pham, Bomi Seong, Eunil Hahm, Kim-Hung Huynh, Yoon-Hee Kim, Jaehi Kim, Sang Hun Lee, Bong-Hyun Jun
Summary: The study presents a method for glucose detection using SiO2@Au@Ag@4-MPBA, achieving sensitive and selective monitoring of glucose in physiologically relevant concentrations.
Article
Biochemistry & Molecular Biology
Yue-Mei Gao, Shih-Han Chiu, Prabhakar Busa, Chen-Lun Liu, Ranjith Kumar Kankala, Chia-Hung Lee
Summary: This study reports the fabrication of core-shell nanostructures for delivering methylene blue and copper-doxorubicin as model drugs for synergistic photodynamic therapy, chemotherapy, and chemodynamic therapy. The designed architectures demonstrate potent anti-cancer efficacy against skin melanoma.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Yuanyuan Zhang, Xueyin Sun, Yong Yuan, Wenzhu Shao, Liang Zhen, Jiantang Jiang
Summary: Fe/Fe3O4 composite particles with mesoporous silica (mSiO2) shells were prepared via solvothermal reaction combined with hydrogen-thermal reduction. The addition of mSiO2 created a well-ventilated framework that maintained the dispersion of fine Fe particles. The conversion of Fe3O4 to Fe nanoparticles enhanced the ferromagnetic loss, while the interface of Fe3O4/Fe/mSiO2 induced an intensified dielectric loss. The Fe/Fe3O4@mSiO2 showed excellent electromagnetic wave-absorbing performances as fillers for electromagnetic absorption materials.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shuo-Fu Chen, Min Kau, Yu-Chi Wang, Ming -Hong Chen, Fu- Tung, Mei-Hsiu Chen, Tse-Ying Liu
Summary: This study demonstrates that the combination of gold-core silica-shell nanoparticles (Au@SiO2 NPs) and low-dose radiation can enhance the clinical efficacy of immune checkpoint inhibitors in glioblastoma treatment. The synergistic strategy modulates tumor microenvironments, increases systemic antitumor immunity, and improves the prognosis for patients with brain tumors.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2023)
Article
Chemistry, Analytical
Jing Guo, Xingxu Yan, Mingjie Xu, Govinda Ghimire, Xiaoqing Pan, Jin He
Summary: An effective method has been developed to tune the intensity of surface-enhanced Raman scattering (SERS) of non-electroactive molecules by electrochemical means, involving the formation of nanostructures between Au@Ag core-shell nanoparticles and a gold nanoelectrode. The tuning is achieved by transforming the chemical composition of the thin Ag shell from metallic Ag to insulating AgCl, instead of introducing molecular changes by the electrode potential. The electrode potential can also tune the electromagnetic enhancement (EME) and specific Raman bands associated with Ag-molecule interaction in the Au@Ag nanostructures.
ANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Zhao Zhuang, Wenjiao Wang, Yudi Wei, Tingxi Li, Mingliang Ma, Yong Ma
Summary: A hierarchical PANI/MnO2 core/shell nanostructure was successfully constructed through in situ polymerization, effectively increasing active surface areas and decreasing ion transmission distance. The nanostructure exhibited better electrochemical activity and higher capacitance performance compared to pure PANI nanorods and pure MnO2.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Analytical
Jaime Quinones, Fabiola Carolina Miranda-Castro, David Encinas-Basurto, Jaime Ibarra, Edgar Felipe Moran-Palacio, Luis Alberto Zamora-Alvarez, Mario Almada
Summary: The encapsulation and release of cisplatin using a mesoporous silica-coated gold nanorods system is reported in this study. Gold nanorods were synthesized using an acidic seed-mediated method and then coated with silica using a modified Stober method. The silica shell was modified with carboxylates groups to improve cisplatin encapsulation. Cisplatin was efficiently encapsulated under optimal conditions and released in a controlled manner, with faster release at acidic pH compared to neutral pH.
Article
Chemistry, Multidisciplinary
Xuan-Hung Pham, Bomi Seong, Sungje Bock, Eunil Hahm, Kim-Hung Huynh, Yoon-Hee Kim, Wooyeon Kim, Jaehi Kim, Dong-Eun Kim, Bong-Hyun Jun
Summary: The study focused on detecting H2O2 levels using SiO2@Au@Ag alloy nanoparticles by catalyzing the conversion of TMB to oxidized TMB and utilizing SERS technology. The optimal conditions for H2O2 detection included incubating the nanoparticles with TMB and measuring the Raman signal. The research successfully demonstrated a method for accurately detecting H2O2 levels.
Article
Chemistry, Multidisciplinary
Zhensong Liu, Zhenyu Zhang, Junyuan Feng, Xian Yi, Chunjing Shi, Yang Gu, Feng Zhao, Shihao Liu, Jingru Li
Summary: By preparing mesoporous shell/core silica abrasives and developing a novel green CMP slurry, polishing performance can be improved and environmental pollution can be reduced. Molecular dynamics simulations show that the mesoporous structure inhibits the formation of convex peaks and promotes uniform distribution and removal of surface atoms, leading to enhanced polishing results.
Article
Chemistry, Physical
Zhenting Zhao, Yueyun Huang, Qiuguo Li, Haijuan Mei, Fanglong Zhu, Weiping Gong
Summary: The research demonstrates the successful fabrication of hierarchical Co3O4@Ag nanowires-graphene nanocomposites with a porous surface for enzymeless glucose detection, showing high sensitivity, low detection limit, and excellent stability.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yanqing Hu, Shijie Yu, Xinyi Deng, Jiaqiang Zhou, Rui Zhang, Qiyue Shao
Summary: This research discovers the opposite temperature-dependence of upconversion luminescence (UCL) in active-shell and inert-shell nanocrystals. The UCL of active-shell nanocrystals is enhanced at elevated temperature, while the UCL of inert-shell nanocrystals declines. This phenomenon is mainly attributed to the gradually attenuated surface quenching effect induced by H2O molecules.
Article
Biotechnology & Applied Microbiology
Hoonsub Kim, Pyung Won Im, Yuanzhe Piao
Summary: Uniform-sized iron oxide nanoparticles were encapsulated inside a silica shell using the reverse microemulsion technique, then transformed into iron nitride through thermal treatment under NH3. The resulting core/shell nanostructures exhibited high uniformity in particle-size distribution. The acid-resistant properties of the iron nitride at silica core/shell nanostructures were significantly higher than the starting iron oxide at silica.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Mehdi Talaei, S. A. Hassanzadeh-Tabrizi, Ali Saffar-Teluri
Summary: Magnetic CuFe2O4 nanoparticles were synthesized via a sol-gel combustion and coated with mesoporous SiO2. The CuFe2O4@SiO2 nanocomposite showed high ibuprofen loading and controlled drug release, with potential applications in biomedicine. Coating CuFe2O4 nanoparticles with mesoporous silica reduced cytotoxicity and improved drug release properties, although it decreased hyperthermia ability.
CERAMICS INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Haifeng Yu, Huawei Zhu, Hongliang Jiang, Xiaozhi Su, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: A dual-track strategy of tantalum doping and cerium oxide coating is used to fully restrain the escape of lattice oxygen from Ni-rich cathodes in high-voltage regions, enhancing the performance and safety of lithium-ion batteries. The treated cathode exhibits high cyclic performance within the voltage range of 2.7-4.5 V.
NATIONAL SCIENCE REVIEW
(2023)
Article
Materials Science, Multidisciplinary
Jiahao Zhang, Qiucheng Xu, Jingyu Wang, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: Researchers have demonstrated a novel electrocatalyst that can improve the efficiency of water electrolysis by breaking the scaling relationship of the oxygen evolution reaction. This catalyst achieves ultrahigh current density at a low potential, with low overpotential and high stability under high current densities.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiahao Zhang, Jingyu Wang, Haijiao Zhang, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: Developing high-performance electrocatalysts is crucial for the future hydrogen economy. A hierarchically heterostructured Ni(OH)2/Fe-Ni2P electrocatalyst was developed to enhance the hydrogen evolution reaction during alkaline water electrolysis. This electrocatalyst showed improved catalytic activity, electrochemical stability, and efficient synergistic catalysis, making it a promising candidate for alkaline water splitting.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Haiyan Wang, Haowen Du, Hucheng Zhang, Songjie Meng, Zhansheng Lu, Hao Jiang, Chunzhong Li, Jianji Wang
Summary: This study presents the design of expanded graphite cohered by N, B bridge-doping carbon patches (NBEG) as an efficient anode for potassium-ion batteries (KIBs). The co-doping of B plays a crucial role in maximizing the doping-site utilization of N atoms, balancing the adsorption-diffusion kinetics, and promoting charge transfer. The designed NBEG exhibits a robust lamellar structure, suitable interlayer distance, and rich active sites, enabling rapid ion/electron transfer and high K-ion storage capacity.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Wu Wei, Zhihong Wang, Liyun Yao, Hao Jiang, Chunzhong Li
Summary: In this study, CeO2-x-coated LiNi0.9Co0.045Mn0.045Al0.01O2 was used to stabilize the lattice oxygen of Ni-rich and Co-poor cathodes, resulting in a reversible oxygen-storage protective layer and improved crystal and interface structure. The obtained cathode exhibited a high specific capacity of 223 mA h g(-1) at 0.1C and 140 mA h g(-1) even at 10C, with 96.7% capacity retention at 1C after 100 cycles in a coin-type half-cell. About 90.1% capacity retention could still be obtained at 1C after 300 cycles in a pouch-type full-cell. This work provides a viable method for stabilizing the lattice oxygen of Ni-rich and Co-poor cathodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Shengwei Yu, Liyuan Chen, Na Cheng, Jiyuan Lu, Liyuan Bi, Wenhui Zhang, Aiping Chen, Haibo Jiang, Chunzhong Li
Summary: Researchers synthesized Pt1.2Ni/C catalyst with excellent activity and long-term stability for oxygen reduction reaction (ORR), achieving a mass activity of 1.53 A/mgPt, which is 12 times higher than that of commercial Pt/C. The adsorption of abundant water on the Pt1.2Ni alloy surface weakens the adsorption of oxygen, contributing to the ORR performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yating Wang, Ling Cheng, Wangxin Ge, Yihua Zhu, Jie Zhang, Rongzhen Chen, Ling Zhang, Yuhang Li, Chunzhong Li
Summary: Scientists have localized nanosized Cu2O on three different carbon-based substrates with different charge-promotion effects, and found that these effects can increase the faradaic efficiency (FE) for C2 products. Among them, positively charged boron-doped graphene (BG) has the highest FE, followed by negatively charged nitrogen-doped graphene (NG), and weakly negatively charged reduced graphene oxide (rGO) has the lowest FE.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yushuang Fang, Yu Fan, Kunchi Xie, Wangxin Ge, Yihua Zhu, Zhiwen Qi, Zhen Song, Hongliang Jiang, Chunzhong Li
Summary: Designing an efficient electrode-electrolyte interface for H2O2 electrosynthesis is challenging. However, adding dimethyl sulfoxide (DMSO) to the electrolyte can improve the selectivity and activity of H2O2 production. The formation of hydrogen bonds between DMSO and water at the electrode-electrolyte interface reduces water dissociation, leading to improved selectivity of H2O2 synthesis. This work highlights the importance of regulating the interfacial hydrogen-bond environment for enhancing electrochemical performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Chemical
Jiachen Guo, Zhiyuan Peng, Hu Wang, Liu Yang, Ling Zhang, Chunzhong Li
Summary: In this study, urea-assisted ball milling method was used to enhance the thermal conductivity, flame resistance, and mechanical properties of cellulose nanofiber-based film by creating the covalent bond between boron nitride nanosheets (BNNS) and black phosphorus (BP). The treated film showed high thermal conductivity at 50% loading, with reduced fire hazard.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Ningning Yuan, Kan Shao, Shan Huang, Cheng Chen
Summary: This paper discusses the combination of natural polymers such as chitosan, alginate, and hyaluronic acid with other polymer materials, loading them in traditional hydrogels, and the development of novel multifunctional hydrogel dressings with antibacterial, self-healing, injectable, and multi-stimulation responsive properties using advanced technologies such as 3D printing, electrospinning, and stem cell therapy. The focus of this paper is on the functional properties of novel multifunctional hydrogel dressings such as chitosan, alginate, and hyaluronic acid, laying the foundation for the research of novel hydrogel dressings with better performance.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Pan Xiong, Yiqin Gong, Xiaoling Yang, Yihua Zhu, Cheng Chen, Jianhua Shen
Summary: This study demonstrates the growth of CsPbBr3 quantum dots in hydrophobic silica aerogels through an in-situ process. By utilizing the photoinitiated cross-linking reaction of conjugated linoleic acids, hydrophobic polymer shells were formed, which improved the water stability of quantum dots. The resulting composite showed remarkable optical performance and was successfully applied as a luminescent material in a white light-emitting diode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoli Jiang, Lei Tang, Lei Dong, Xuedi Sheng, Wenfei Zhang, Zhen Liu, Jianhua Shen, Hongliang Jiang, Chunzhong Li
Summary: In this study, density functional theory (DFT) simulations were used to investigate the site isolation strategy in electrocatalytic selective hydrogenation of acetylene. The results showed that isolated Cu metal sites have higher energy barriers on overhydrogenation and C-C coupling reactions. Based on this, Cu single-atom catalysts highly dispersed on nitrogen-doped carbon matrix were developed and demonstrated high ethylene selectivity under high concentrations of acetylene. The superior performance was attributed to the weak adsorption of ethylene intermediates and highly energy barriers on C-C coupling at isolated sites, as confirmed by both DFT calculations and experimental results. This study provides a comprehensive understanding of the isolated sites inhibiting the side reactions in electrocatalytic acetylene semihydrogenation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Energy & Fuels
Yuhang Jiang, Yating Wang, Rongzhen Chen, Yuhang Li, Chunzhong Li
Summary: The use of bimetallic metal-organic frameworks (MOFs) as electrocatalysts for the carbon dioxide reduction reaction (CO2RR) has gained significant attention in the field of clean energy. Bimetallic MOFs exhibit synergistic effects and superior performance compared to monometallic MOFs, particularly in terms of product selectivity. This mini-review provides an overview of recent progress in the synthesis and design of bimetallic MOFs as CO2RR electrocatalysts. The importance of organic ligands, metal components, and MOF-derived materials is discussed, along with the advantages of utilizing two metal components. The challenges, gaps, and future perspectives of using bimetallic MOF materials for electrocatalytic CO2RR are also highlighted.
Article
Chemistry, Physical
Shengwei Yu, Jiyuan Lu, Liyuan Bi, Xiang Xie, Aiping Chen, Haibo Jiang, Chunzhong Li
Summary: This research demonstrates that enhancing the oxygen adsorption energy through tensile effect can significantly reduce the apparent activation energy and enhance the reactivity of the oxygen reduction reaction (ORR), providing new possibilities for the design and synthesis of ORR catalysts.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zhaolu Zhang, Kai Huang, Xinyue Qiu, Wangxin Ge, Xiaoling Yang, Yihua Zhu, Cheng Lian, Honglai Liu, Hongliang Jiang, Zhong Li
Summary: This work demonstrated a highly efficient electrochemical conversion of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan and developed a highly porous Cu-based catalyst with high BHMF selectivity and long-term stability. The electrochemically generated catalyst with abundant Cu/Cu2O interfaces was identified as the catalytically active phase for HMF conversion through structural characterizations.
FUNDAMENTAL RESEARCH
(2023)
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)
