Article
Physics, Multidisciplinary
S. A. Beknalkar, A. M. Teli, N. S. Harale, D. S. Patil, J. R. Sutar, J. C. Shin, P. S. Patil
Summary: This study investigated the impact of cationic precursor concentration on the electrochemical performance of SILAR-deposited Mn3O4 thin films. Results showed that the concentration of the cationic precursor plays a vital role in the microstructure and electrochemical properties of the films.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Wen-Chun Huang, Yi-Chen Lee, Yu-Zhe Chen, Chieh-Ming Wu, Wen-Jeng Hsueh, Su-Yu Liao, Chun-Ying Huang
Summary: We report a highly stable p-type Mn3O4 flexible gas sensor for room-temperature detection of O-3. The sensor shows fast gas response and recovery time, as well as high selectivity for O-3 gas at room temperature. Additionally, the sensor exhibits negligible degradation over a 60-day testing period.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
A. G. Bagde, D. B. Malavekar, D. C. Pawar, S. D. Khot, C. D. Lokhande
Summary: Developing and fabricating effective, affordable electrode materials for supercapacitors is still a challenge. In this study, amorphous ruthenium oxide (RuO2) thin films were successfully deposited on a stainless steel substrate using the successive ionic layer adsorption and reaction (SILAR) method. The RuO2 films with a thickness of 1.56 mg cm-2 exhibited a maximum specific capacitance of 1146 F g-1 and 87% capacitance retention up to 5000 cycles, indicating their potential as cost-effective electrode materials for supercapacitor applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
P. P. Bagwade, D. B. Malavekar, S. B. Ubale, T. T. Ghogare, R. N. Bulakhe, I. In, U. M. Patil, C. D. Lokhande
Summary: The SILAR method was employed to deposit dysprosium sulfide thin films on stainless steel substrate, showing orthorhombic crystal structure and microstructure with spherical nanostructured particles. The films exhibited hydrophilic nature and high specific capacitance in electrochemical properties.
SOLID STATE SCIENCES
(2021)
Article
Energy & Fuels
Kaiwen Sun, Ao Wang, Zhenghua Su, Fangyang Liu, Xiaojing Hao
Summary: The study investigates the preparation of high-quality CZTS films using the SILAR method. By optimizing the annealing process, both film quality and solar cell performance were enhanced. The optimal annealing condition at 580 degrees C for 60 minutes resulted in solar cells with an efficiency of up to 4.26%.
Article
Electrochemistry
P. P. Bagwade, D. B. Malavekar, S. B. Ubale, R. N. Bulakhe, I. In, U. M. Patil, C. D. Lokhande
Summary: Cobalt tungstate (CoWO4) thin films were synthesized for the first time using the successive ionic layer adsorption and reaction (SILAR) method. The films exhibited a monoclinic crystal structure and had a surface morphology consisting of agglomerated cauliflower-like spherical nanoparticles. The specific capacitance and capacitance retention of the CoWO4 thin film electrode were found to be high, and the thin films were also used to assemble a flexible solid-state symmetric supercapacitor device with good performance.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Yimin Jin, Shujie Jiao, Dongbo Wang, Shiyong Gao, Jinzhong Wang
Summary: By decorating ZnO nanorods with Ag2S/ZnS, the photoelectric properties of ZnO have been improved, leading to an increase in photocurrent in photodetectors. Additionally, extending the immersion time can further enhance the photocurrent.
Article
Chemistry, Physical
P. P. Bagwade, D. B. Malavekar, V. V. Magdum, S. D. Khot, R. P. Nikam, D. J. Patil, U. M. Patil, C. D. Lokhande
Summary: This study focuses on the application of nanocrystalline cobalt tungstate (CoWO4) thin films as an electrocatalyst for oxygen evolution reaction (OER), prepared using the successive ionic layer adsorption and reaction (SILAR) method. Characterization techniques such as X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy were employed, revealing the formation of crystalline CoWO4 with spherical morphology. CoWO4 exhibited excellent electrochemical performance with a low overpotential and high stability during OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Wen-Jen Lee, Xin-Jin Wang
Summary: Copper oxide films were prepared using the SILAR method and subjected to annealing. The results showed that the annealing temperature and time had effects on the crystal structure, bandgap, resistivity, and other properties of the films.
Article
Chemistry, Physical
D. B. Malavekar, V. C. Lokhande, D. J. Patil, S. B. Kale, U. M. Patil, T. Ji, C. D. Lokhande
Summary: In this study, amorphous nickel tungstate electrocatalyst was synthesized using a facile method and characterized by various techniques. The electrochemical analysis demonstrated that the electrocatalyst exhibited high efficiency and stability for water electrolysis in alkaline media. This research is of great significance for efficient hydrogen production through water electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Qingtao Wang, Liqiu Huang, Huiping Liu, Yanxia Wu, Guofu Ma, Ziqiang Lei, Shufang Ren
Summary: This study reports a defect-mediated successive ion layer adsorption and reaction method to construct Ag2S/irradiated Sb2Te3 heterojunctions with good HER activity. By introducing defects and regulating the growth of the heterojunction, material properties were controlled, resulting in improved electrochemical activity.
Article
Engineering, Environmental
Shital B. Kale, Aman Bhardwaj, Vaibhav C. Lokhande, Dong-Min Lee, Soon-Hyung Kang, Jin-Hyeok Kim, Chandrakant D. Lokhande
Summary: The amorphous (Co-Mn)S tailored into nanosheets and deposited on stainless steel substrates showed high efficiency and stability as an electrocatalyst for oxygen evolution reaction. By tuning the composition stoichiometrically, the electrocatalytic activity and OER performance were effectively enhanced, resulting in high current density at low overpotential. With the benefits of redox chemical properties and binder-free deposition, the (Co3Mn2)S thin film electrocatalyst achieved promising OER performance and stability, making it a candidate for large-scale applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Jiyao Wei, Xuemin Guo, Hui Yang, Acan Liu, Wenxiao Zhang, Chunyan Lu, Xiaodong Li, Junfeng Fang
Summary: Copper thiocyanate (CuSCN) shows promise as an inorganic hole transport material for perovskite solar cells (PSCs) due to its wide-bandgap, low cost, high carrier mobility, and good transmittance. However, its limited solubility has hindered its application in PSCs. In this study, high-quality CuSCN films were successfully prepared using the successive ionic layer adsorption and reaction (SILAR) method, resulting in efficient inverted PSCs with significantly improved efficiency from 11.10% to 18.71%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Zu-Yin Deng, Ping-Chang Chiang, Kuen-Lin Chen, Jau-Han Chen, Chiu-Hsien Wu
Summary: The developed resistive humidity sensor based on Ag2S QDs and TiO2 shows high sensitivity and selectivity. The large surface-to-volume ratio of QDs provides strong water vapor adsorption ability and electron transfer, while nano-silver formed during the SILAR process lowers the Fermi level, significantly improving the response time and sensitivity of the sensor.
Article
Multidisciplinary Sciences
Md Alauddin Hossain, Syed Farid Uddin Farhad, Nazmul Islam Tanvir, Jang Hyo Chang, Mohammad Atiqur Rahman, Tooru Tanaka, Qixin Guo, Jamal Uddin, Md Abdul Majed Patwary
Summary: In this study, Cu2O nanorods were deposited on soda-lime glass substrates using the modified successive ionic layer adsorption and reaction technique. The synthesized Cu2O nanorod films were characterized for their structural, electrical, and optical properties. The presence of NaCl electrolyte in the precursor solutions was found to have a significant impact on the physical properties of Cu2O nanorod films.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Amar M. Patil, Sunil Moon, Youngho Seo, Sanjib B. Roy, Arti A. Jadhav, Deepak P. Dubal, Keonwook Kang, Seong Chan Jun
Summary: This study demonstrates the unique core-shell architecture of metal organic framework derived N-S codoped carbon@CoxSy micropetals decorated with Nb-incorporated cobalt molybdate nanosheets, which significantly improves the electrochemical performance of high-energy-density battery-type materials. The optimized electrode exhibits a high specific capacity and excellent cycle stability. A flexible quasi-solid-state supercapacitor with a layer-by-layer deposited reduced graphene oxide/Ti3C2TX anode also achieves high specific energy and capacity retention over 10,000 charge-discharge cycles.
Review
Polymer Science
Md. Ikram Ul Hoque, Rudolf Holze
Summary: This article discusses the application of intrinsically conducting polymers (ICPs) combined with electrochemically active materials as active masses in supercapacitor electrodes. The roles of the constituents of the composites and possible synergistic effects are highlighted. The stability of composite electrode materials, a crucial property for practical use, is also addressed, taking into account the causes and effects of materials degradation.
Article
Materials Science, Multidisciplinary
Helapiyumi Weerathunga, Thu Trang Do, Hong Duc Pham, Robert Jones, Jennifer MacLeod, TaeYoung Kim, Deepak Dubal
Summary: A freestanding, ultra-flexible, and washable joule heater was developed using a biocompatible poly(styrene-isoprene-styrene) (SIBS) polymer as binder and carbon black (CB) as heating material. The heater exhibited a minimum resistivity and conductivity of 26 m omega cm and 7.4 S cm(-1), respectively. It also demonstrated excellent stability and performance even after mechanical property tests such as bending, repetitive bending, twisting, and washing.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Mahesh Y. Chougale, Muhammad Umair Khan, Jungmin Kim, Jordan Cosgrove, Rayyan Ali Shaukat, Qazi Muhammad Saqib, Maniram Banjade, Swapnil R. Patil, Cameron Brown, Deepak Dubal, Jinho Bae
Summary: This study investigates the use of snake ecdysis as advanced electronic materials for energy harvesting, sensing, and storage applications. The snake ecdysis exhibits high porosity, flexibility, piezo-sensitivity, and tribopositivity, making it suitable for developing high-performance piezoelectric and triboelectric devices. The results demonstrate the potential of snake ecdysis for sustainable self-driven electronic devices.
Article
Green & Sustainable Science & Technology
Chinmayee Padwal, Hong Duc Pham, Linh Thi My Hoang, Sagadevan Mundree, Deepak Dubal
Summary: Biomass, such as agricultural waste, is a sustainable source for electrode materials production in energy storage systems. The pre-treatment of biomass is crucial for determining material quality and device performance. Traditional methods using aggressive chemicals pose environmental and health risks. This study introduces deep eutectic solvents (DES) as green, inexpensive, and effective solvents for rice-husk biomass pre-treatment. The results show that DES efficiently removes inorganic impurities while preserving organic content. DES-treated rice-husk is then transformed into silicon/carbon nanocomposites, which exhibit excellent electrochemical properties for lithium-ion batteries.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Baliram Nadekar, Girish S. Gund, Yogesh B. Khollam, Shoyebmohamad F. Shaikh, Dattatray S. Wavhal, Deepak P. Dubal, Pravin More
Summary: With the rapid growth in the manufacturing industry, the emission of hazardous volatile organic compounds (VOCs) has increased, leading to a demand for highly sensitive, selective, and stable gas sensors. We have addressed the issues associated with chemoresistive alcohol sensors by using iodine-doped polyvinyl acetate (IPVAc) films, which offer benefits like low power consumption, ease of manufacture, and long-term stability. These films demonstrated high selectivity for alcohols over other VOCs and stable sensitivity performance over a wide temperature range. Therefore, plasma-polymerized IPVAc films can be applied for highly selective, sensitive, and stable VOC sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
M. Barclay, K. Firestein, X. Wang, N. Motta, D. Dubal, K. Ostrikov
Summary: Non-thermal atmospheric pressure plasma is used to assist the synthesis of high specific capacitance MnO2 supercapacitor materials, with the addition of plasma-activated water (PAW) providing an efficient approach and promoting hydration of electrode materials. The use of PAW improves both the specific capacitance and cycle stability of the electrodes.
MATERIALS TODAY SUSTAINABILITY
(2023)
Review
Energy & Fuels
Yi Liu, Huibo Wang, Qingyuan Li, Lingfeng Zhou, Pengjun Zhao, Rudolf Holze
Summary: This review focuses on the challenges of the anode in rechargeable aqueous zinc-ion batteries (ZIBs) and summarizes strategies such as surface engineering, electrolyte modification, and 3D structural skeleton and alloying to address issues such as dendrites growth, hydrogen evolution, and surface passivation. Future opportunities and challenges for ZIBs related to the Zn anode are also discussed.
Article
Agricultural Engineering
Shahrooz Rahmati, Luqman Atanda, Athukoralalage Don K. Deshan, Lalehvash Moghaddam, Deepak Dubal, William Doherty, Kostya (Ken) Ostrikov
Summary: Due to the increasing energy consumption and population growth, there is a need for alternative resources to produce chemicals and energy, leading to the pursuit of a circular economy. Lignocellulosic biomass, specifically sugarcane bagasse, can be converted into high-value products in sustainable lignocellulose biorefineries. In this study, autohydrolysis treatment of sugarcane bagasse was developed using low-temperature plasma and ball-mill treatment to produce xylooligosaccharides (XOS) with a variable degree of polymerization.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Review
Biochemistry & Molecular Biology
Xuecheng Chen, Yuping Wu, Rudolf Holze
Summary: The most significant advantage of supercapacitors is their high stability in terms of lifetime, charge/discharge cycles, and other stability-related properties, along with their high current capability. However, actual devices often experience a deterioration in performance parameters over time and use. This review comprehensively addresses the causes at material, component, and device levels, while also discussing modeling approaches and suggestions for slowing down aging and degradation.
Article
Chemistry, Multidisciplinary
Jinhu Wang, Reza Abazari, Soheila Sanati, Aleksander Ejsmont, Joanna Goscianska, Yingtang Zhou, Deepak P. P. Dubal
Summary: Urea oxidation reaction (UOR) is a promising alternative to water oxidation for green hydrogen production. A water-stable fluorinated Cu(II) metalorganic framework (Cu-FMOF-NH2) was developed as a resistant, low-cost, and environmentally friendly electrocatalyst. Cu-FMOF-NH2 exhibited superior performance to other catalysts, including commercial RuO2 catalyst, achieving high current density at low voltage.
Article
Green & Sustainable Science & Technology
Hong Duc Pham, Syam G. Krishnan, Tony Wang, Joseph F. S. Fernando, Chinmayee Padwal, Dmitri V. Golberg, Deepak P. Dubal
Summary: Due to the rapid expansion of the portable electronics and electric vehicles market, the demand for rechargeable batteries is huge and may lead to a shortage of critical minerals, particularly nickel. This study successfully upcycled nickel oxide (NiO) material from spent nickel-metal hydride batteries to develop sustainable electrodes for lithium-ion batteries and supercapacitors. The recycled NiO showed promising capacity as a cathode material, exhibiting excellent rate capability and cycle life in traditional electrolytes. This upcycling process offers a potential solution for future generation energy storage devices and sustainable supply of critical minerals, contributing to a clean environment.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Green & Sustainable Science & Technology
Somnath Khaladkar, Girish Gund, Oshnik Maurya, Bhavesh Sinha, Paresh Salame, Deepak Dubal, Rajendra Deshmukh, Archana Kalekar
Summary: A unique architecture of NiSe nanoparticles decorated on reduced graphene oxide (rGO) has been developed, which significantly improves the electrochemical performance of NiSe. The hybrid supercapacitor based on NiSe/rGO demonstrates a high energy density and good cyclic stability, making it a promising candidate for high-performance hybrid supercapacitors.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Xijue Wang, Hong Duc Pham, Chinmayee Padwal, Tony Wang, Joseph F. S. Fernando, Kostya (Ken) Ostrikov, Dmitri Golberg, Deepak Dubal
Summary: The surging demand for high-energy cathode materials, driven by the increasing adoption of lithium-ion batteries in electric vehicles, renewable energy storage, and portable electronics, has prompted researchers to explore new methods for their production. This investigation presents a promising approach using ultrfast microwave solid-state process to synthesize high-voltage LiNi0.5Mn1.5O4 (LNMO) cathode materials. Microwave irradiations not only greatly accelerate the reaction kinetics, leading to a much shorter synthesis time, but also enhance the homogeneity and performance of LNMO cathode. The results demonstrate the potential of this method in manufacturing oxide materials for energy storage applications.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Reza Abazari, Soheila Sanati, Majed A. Bajaber, Muhammad Sufyan Javed, Peter C. Junk, Ashok Kumar Nanjundan, Jinjie Qian, Deepak P. Dubal
Summary: Metal-organic frameworks (MOFs) are a new family of materials with unique features such as hierarchical porosity, active metal centers, and large surface area. Zr-based MOFs, including NU-1000, demonstrate superior stability and are ideal for energy and environmental applications. This review provides a comprehensive overview of the synthesis, unique surface properties, and applications of NU-1000 MOFs in catalysis, CO2 reduction, batteries, hydrogen storage, gas storage/separation, and other environmental fields. The current challenges and future directions for NU-1000 MOFs in practical applications are also discussed.
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)