Article
Chemistry, Physical
Ting Chen, Yulei Ren, Yanqiao Xu, Weihui Jiang, Lianjun Wang, Wan Jiang, Zhixiang Xie
Summary: Synthesis of water-soluble I-III-VI type quantum dots (QDs) with high luminescence performance remains a challenge, but the study successfully prepared water-soluble Ag-In-Zn-S (AIZS) QDs using room temperature ionic liquids (RTILs) assisted hydrothermal method. The RTIL [Mim]BF4 played an important role in the phase structure, morphology, and optical properties of the AIZS QDs, resulting in improved quantum yield and successful passivation of trap states. Moreover, a high-performance white light-emitting diode (WLED) based on AIZS QDs was fabricated, showing promising prospects for application in photoelectric devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Marwa Akkari, Afrah Bardaoui, Mohamed Amine Djebbi, Abdesslem Ben Haj Amara, Radhouane Chtourou
Summary: This study focused on the development and characterization of Ag-ZnO/sepiolite photocatalysts. The results showed that the Ag-ZnO/sepiolite photocatalysts prepared by a simple hydrothermal route exhibited enhanced photocatalytic activity, with the sample doped with 5% Ag showing the best performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Inorganic & Nuclear
Karuppiah Nagaraj, Pilavadi Thankamuniyandi, Subramaniam Kamalesu, Snehal Lokhandwala, Nikhil M. Parekh, Subramanian Sakthinathan, Te-Wei Chiu, Chelladurai Karuppiah
Summary: This study synthesized TiO2 nanoparticles with varying amounts of silver using a convenient and cost-effective method. Ag@TiO2 NPs were produced as an alternative to traditional chemical synthesis using an aqueous extract from the Leucas Aspera plant. Analytical techniques such as UV-vis, infrared, Raman, HRTEM, XPS, XRD, SAED, and EDS confirmed the presence of anatase phase titanium dioxide. The Ag anchored TiO2 nanostructure exhibited higher photocatalytic activity for the degradation of picric acid compared to pure titanium oxide under visible-light irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Congfei Yao, Panbing Hu, Xudong Song, Jie Zhang, Qian Wang, Hongqi Liu, Yanmei Xin, Yuqing Miao
Summary: Raw materials and synthesis strategies significantly affect the morphology and optical properties of materials. In this study, controllable thin sheet-like BiPO4 with high visible-light response was synthesized using Bi-based metal-organic frameworks (CAU-17) and ionic liquid [Omim]H2PO4 as raw materials. The synthesized BiPO4-A and BiPO4-U showed better visible-light absorption capacity and narrower band gap compared to BiPO4-H synthesized using inorganic salt. The improved photocatalytic performance of the materials was attributed to fast charge transfer, large specific surface areas, and enhanced light adsorption. This study provides a new technique for synthesizing efficient photocatalysts for wastewater purification under visible-light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Ganjar Fadillah, Rahmat Hidayat, Tawfik A. Saleh
Summary: Water purification is a global issue that requires new methods and materials. In this study, hydrophobic TiO2-ZnO/rGO material was synthesized and optimized for efficient degradation of indigo carmine solution. The photocatalytic study showed that the degradation process was controlled by superoxide anion radical, and the material's properties could be enhanced through modification.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
N. S. Pavithra, G. Nagaraju, S. B. Patil
Summary: Single-phase ZnWO4 nanoparticles were successfully synthesized using a low-temperature ionic liquid-assisted hydrothermal method, demonstrating high efficiency in photocatalytic degradation of Indigo Carmine dye under UV light irradiation. The degradation efficiency reached up to 90% within 120 minutes, indicating the potential of ZnWO4 nanoparticles for future applications in dye degradation technology.
Article
Nanoscience & Nanotechnology
Yarimeth Ameyalli Alarcon-Altamirano, Ramses Alejandro Miranda-Gamboa, Agustin Baron-Jaimes, Karla Arlen Ortiz-Soto, Marina Elizabeth Rincon, Oscar Andres Jaramillo-Quintero
Summary: This study investigates the effect of adding the ionic liquid BMIMHS on Sb2S3 solar cells. The results show that BMIMHS helps reduce the presence of small particles on the surface and improves the crystallinity of Sb2S3 films. Moreover, adding BMIMHS can passivate defects and improve the quality of Sb2S3 films. The best-performing BMIMHS-assisted device achieves a significant enhancement in power conversion efficiency.
Article
Environmental Sciences
Kezhen Qi, Nan Cui, Manjie Zhang, Yuhua Ma, Guangzhao Wang, Zhen Zhao, Alireza Khataee
Summary: This study presents a simple method to prepare boron-doped graphitic carbon nitride (B/g-C3N4) for enhanced photocatalytic performance in water splitting for hydrogen production. The porous structure and boron doping contribute to the increased photocatalytic activity, with the hydrogen generation rate almost 3 times faster than g-C3N4.
Article
Chemistry, Physical
Yanhong Xiang, Meiyun Huang, Youliang Jiang, Saiqiu Liu, Jian Li, Jianhua Wu, Zhixiong Liu, Ling Zhu, Xianwen Wu, Zeqiang He, Lizhi Xiong
Summary: In this study, uniform lithium-rich manganese-based cathode materials were synthesized with the assistance of 1-butyl-3-methylimidazolium chloride ionic liquid, exhibiting unique microstructures and better layered structure that improved electrochemical kinetics properties. The addition of [BMIm]Cl ionic liquid decreased charge transfer resistance and diffusion pathways of Li+ ions and electrons, leading to enhanced rate capability and cycling stability of the cathode materials. Specifically, the 0.5Li(2)MnO(3).0.5LiNi(0.5)Mn(0.5)O(2) material showed a higher initial capacity of 269.7 mAh g(-1) and a capacity retention of 93.0% after 65 cycles with the addition of 0.5 g of [BMIm]Cl ionic liquid.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
C. V. Nova, K. A. Reis, A. L. Pinheiro, C. J. Dalmaschio, A. J. Chiquito, M. D. Teodoro, A. D. Rodrigues, E. Longo, F. M. Pontes
Summary: ZrO2 nanoparticles and Ag@ZrO2 nanocomposite were prepared via advanced oxidation processes and hydrothermal treatment, showing tetragonal crystalline phase with small nanoparticles. Ag@ZrO2 exhibited superior photocatalytic activity and antibacterial properties compared to ZrO2, with growth inhibition of bacteria cultures and irreversible damage observed on bacterial cell membranes through SEM analysis.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jing Shen, Lingling Zuo, Yuting Meng, Ting Fu, Likun Chi, Tongwen Wang, Jingping Liu
Summary: The study found that the dispersity and loading capacity of Ag nanoparticles on the polymer spheres, as well as the structure of bimodal porous silica, can be easily manipulated by changing the mass ratios and the amount of adding AIL(16). The synthesized Ag-decorated bimodal porous silica exhibited good catalytic activity for the reduction reaction of 4-nitrophenol.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Miao Wang, Yingying Guo, Zedong Wang, Huihui Cui, Tongming Sun, Yanfeng Tang
Summary: CeVO4 hierarchical hollow microspheres with various morphologies were synthesized via a glycerol-assisted solvothermal route. The adjustable structural variations and enhanced photocatalytic performance of the CeVO4 materials suggest new possibilities for the development of efficient hollow micro/nanostructures in the future.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Jianing Yang, Qiuchen Xu, Yiteng Zheng, Zhangmin Tian, Yingying Shi, Chenxu Ma, Guiying Liu, Bin Peng, Zhen Wang, Wenjun Zheng
Summary: In this study, a facile and large-scale synthesis of high-concentration 1T-TMDs using an ionic liquid assisted hydrothermal strategy was reported. It was found that the ionic liquid adsorbs on the surface of 1T-MoS2, inducing the formation of 1T-MoS2 through steric hindrance, pi-pi stacking, and hydrogen bonds. The obtained MoS2-IL showed high stability for 180 days at room temperature and exhibited excellent HER performance in acid conditions.
Article
Chemistry, Physical
Anuja A. Yadav, Yuvaraj M. Hunge, Ananta G. Dhodamani, Seok-Won Kang
Summary: Photocatalytic hydrogen production is a green and cost-effective technology that can provide clean energy to alleviate the fossil fuel crisis. Designing visible-light-active photocatalyst materials and using noble metals can enhance the efficiency of photocatalysts. This study investigates the synergistic effect of noble co-catalyst Ag on MoS2 for photocatalytic hydrogen production, showing improved visible light absorption and hydrogen production rates. A possible working mechanism of visible-light-driven photocatalytic hydrogen production using the Ag@MoS2 composite is proposed.
Article
Chemistry, Physical
Komal Arora, Manvir Kaur, Harjinder Singh, Sekar Karthikeyan, Tejwant Singh Kang
Summary: By utilizing SAIL for aqueous phase exfoliation of graphene sheets and subsequent exposure to sunlight, Ag/AgBr@Graphene nanocomposite with enhanced photocatalytic activity for degrading pollutants was successfully prepared, outperforming other materials in the process.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Anthony Chidi Ezika, Emmanuel Rotimi Sadiku, Gbolahan Joseph Adekoya, Yskandar Hamam, Suprakas Sinha Ray
Summary: This study calculated the elastic modulus and electrical conductivity of a MX/PPy nanocomposite electrode and optimized them using the response surface methodology. The results showed that the suggested finite element model could accurately predict the electrical conductivity and elastic modulus of the MX/PPy electrodes, making them viable for metal-ion batteries.
POLYMER ENGINEERING AND SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Neeraj Kumar, Rashi Gusain, Sadanand Pandey, Suprakas Sinha Ray
Summary: This review comprehensively analyzes the use of hydrogel nanocomposites for water treatment, focusing on adsorbent and photocatalysis techniques. It discusses the structure, classification, and synthesis methods of hydrogels, as well as their incorporation with functional nanoparticles. The review also critically examines the structure-property relationships of hydrogel nanocomposites, considering factors such as swelling characteristics, mechanical properties, and stimuli-responsiveness.
ADVANCED MATERIALS INTERFACES
(2023)
Review
Engineering, Chemical
Ritima Banerjee, Amanuel Gebrekrstos, Jonathan Tersur Orasugh, Suprakas Sinha Ray
Summary: This paper presents recent developments in electrically conducting nanocarbon-containing polymer composite foams for advanced applications and introduces the knowledge gaps and potential solutions. Various materials have been used for electromagnetic interference shielding, energy storage, and piezoresistive applications. Among these, nanocarbon-containing polymer composite foams score high because of their superior performance and lightweight. By offering a holistic overview of the fundamentals of electromagnetic interference shielding, piezoresistivity, the processing of polymer nanocomposites and foams, and the critical aspects related to the development of electrically conducting polymer nanocomposite foams for advanced applications, this paper provides insight into future advances in this area. Furthermore, the selective localization of nanofiller particles in polymer blends and the consequent effects on the foamability and electrical properties of foams, an area seldom discussed in the literature, is critically reviewed in the present work. In summary, this paper offers new insights into the design of advanced conductive nanocarbon-containing polymer composite foams for applications in electromagnetic interference shielding, energy storage, and piezoresistive sensors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Jonathan Tersur Orasugh, Valentine Saasa, Suprakas Sinha Ray, Bonex Mwakikunga
Summary: A series of graphene oxide@cellulose nanocrystal (GO@CNC) nanoparticles were synthesized using a modified hummers process. The nanoparticles exhibited crystallite grains with different sizes and -OH & -COOH functionalities on their surfaces. The GO@CNC nanoparticles showed significantly improved sensing characteristics towards acetone compared to virgin GO nanoplatelets, with GO3@CNC3 NPs showing the highest response at 5 ppm and a detection limit of 5 ppm, making them a viable candidate for diabetes breath testing.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Polymer Science
Tanyaradzwa S. Muzata, Amanuel Gebrekrstos, Jonathan Tersur Orasugh, Suprakas Sinha Ray
Summary: Polymers are extensively used materials in everyday life due to their competitive price, ease of processability, and rust resistance. However, consistent exposure to UV radiation can cause degradation and discoloration of polymeric materials. To improve the UV-shielding properties, various polymer composites containing inorganic and organic nanoparticles (NPs) have been developed, but challenges such as degradation and agglomeration need to be addressed.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Karabo Innocent Matumba, Mpho Phillip Motloung, Vincent Ojijo, Suprakas Sinha Ray, Emmanuel Rotimi Sadiku
Summary: This study investigated the effect of Joncryl concentration on the properties of PLA/PCL and PLA/PEG blends. The addition of Joncryl influenced the properties of both blends, with reduced droplet size and improved compatibility observed in PLA/PCL blends, and the presence of a co-continuous morphology in PLA/PEG blends at certain Joncryl loadings. Joncryl addition also decreased the crystallinity of PCL and PEG in the blends. The thermal stabilities and mechanical properties of the blends were shown to be dependent on the Joncryl concentration.
Review
Polymer Science
Amanuel Gebrekrstos, Suprakas Sinha Ray
Summary: The assimilation of highly conductive nanofillers in immiscible polymer blends has shown great potential for various applications. Recent advancements in controlling the location of nanoparticles at the interface of immiscible binary blends have enhanced mechanical and electrical performance of the composites. This review critically inspects the possible mechanism for locating the nanofillers at the interface and their influence on the electrical conductivity and mechanical properties.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mpho Phillip Motloung, Tladi Gideon Mofokeng, Jayita Bandyopadhyay, Suprakas Sinha Ray
Summary: The impact of incorporating chitin in PBS/HAP composites on their mechanical and thermal properties, as well as soil degradation characteristics, was investigated. Chitin was found to improve the soil degradation characteristics and melt strength of the composites, while decreasing their elongation at break.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Review
Chemistry, Physical
Lesego Tabea Temane, Jonathan Tersur Orasugh, Suprakas Sinha Ray
Summary: Poly(lactic acid) or polylactide (PLA) is a potential replacement for petrochemically made plastics, but its flammability and propensity to flow in a fire have limited its use. Research has focused on developing new flame-retardants for PLA, with a recent emphasis on two-dimensional nanosystems and their composites. The addition of 2D nanoparticles reduces the flammability of PLA by forming a barrier layer that blocks the transfer of volatile gases, oxygen, and heat.
Review
Chemistry, Multidisciplinary
Adrija Ghosh, Jonathan Tersur Orasugh, Suprakas Sinha Ray, Dipankar Chattopadhyay
Summary: Efficient and adaptable electrospinning technology can produce porous structures with sizes between the submicrometer and nanometerscales. Combining electrospinning with 3D printing or additive manufacturing provides a flexible technique for digitally controlled shape-morphing fabrication. The integration of configurations allows for complex shapes and patterns on mesostructured, stimulus-responsive fabrics. This review discusses the synergy between 3D printing and electrospinning for advanced applications in biomedicine.
Review
Chemistry, Multidisciplinary
Ritima Banerjee, Suprakas Sinha Ray
Summary: This review provides an overview of the role of rheology in polymer processing, emphasizing its importance in the development, characterization, and assessment of polymeric material morphologies. It also offers ideas for improving the processabilities of these materials in advanced processing operations.
Article
Energy & Fuels
Neeraj Kumar, Rashi Gusain, Mike Masukume, Suprakas Sinha Ray
Article
Energy & Fuels
Neeraj Kumar, Rashi Gusain, Mike Masukume, Suprakas Sinha Ray
Summary: The occurrence of pharmaceutical pollutants in the environment is a growing concern and effective strategies for their elimination are needed. Photocatalysis has been recommended as an efficient approach, and in this study, a boron-oxide-decorated nitrogen-rich reduced graphene oxide (B2O3/N-rGO) nanocomposite is synthesized and characterized for its photocatalytic performance toward ciprofloxacin (CIP) degradation. The results show that the B2O3/N-rGO nanocomposite demonstrates significantly enhanced photocatalytic activity compared to N-rGO and pure B2O3, making it a promising material for environmental remediation and energy-related applications.
Article
Biochemistry & Molecular Biology
Orielia Pria Egambaram, Sreejarani Kesavan Pillai, Suprakas Sinha Ray, Marlize Goosen, Antonio Vassallo
Summary: Organic UV filters generate harmful by-products and undergo photoreactive degradation, posing a threat to sunscreen users. Inorganic UV filters like TiO2 and ZnO have photocatalytic properties and can generate reactive oxygen species, making them not entirely safe options. A study investigated the influence of different metal ions on the photochemical properties of layered double hydroxides (LDH) and their potential in photoprotection. The results showed that Zn-Ti and Zn-Al LDH with intermediate band gaps offered lower photo-reactivity and promising UV protection in cosmetic formulations.
Review
Chemistry, Multidisciplinary
Adrija Ghosh, Jonathan Tersur Orasugh, Suprakas Sinha Ray, Dipankar Chattopadhyay
Summary: Water is vital for human life and its pollution caused by human activities affects humanity. Therefore, caution is necessary when using novel materials and technologies for wastewater treatment. Graphdiyne (GDY), a promising 2D nanomaterial, shows potential for applications in oil-water separation, organic-pollutant removal, heavy-metal adsorption, and desalination. This review provides insights into the structure, properties, synthesis methods of GDY, and its various applications in desalination and wastewater treatment.
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)
