Article
Materials Science, Ceramics
Nguyen Minh Hieu, Cao Van Phuoc, Cao Viet Anh, Nguyen Manh Hung, Anh D. Phan, Nguyen Duc Chinh, Sutripto Majumder, Pham Thanh Huy, Jong- Ryul Jeong, Junghyo Nah, Dojin Kim
Summary: In this research, Bi2O3 nanoparticles/SWCNT nanohybrids were synthesized using a simple chemical procedure to construct a room temperature acetone gas sensor that can tolerate humidity. The morphological structure properties of the nanohybrids were analyzed using X-ray diffraction, transmission electron microscopy, and other surface area measurements. The effect of humidity was investigated through resistance and conductivity measurements, and the nanohybrids demonstrated a stable and linear response to acetone under increasing humidity conditions (0-90%), outperforming pure Bi2O3 and pure SWCNTs.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
A-Rang Jang, Ji Eun Lim, Seunghun Jang, Myung Hyun Kang, Geonhee Lee, Hyunju Chang, EunKyoung Kim, Joung Kyu Park, Jeong-O Lee
Summary: Decorating graphene with synthesized Ag2S nanoparticles significantly enhances gas selectivity and response levels of a chemical sensor. The presence of Ag2S nanoparticles on graphene leads to a dramatic increase in response to acetone vapor, while no noticeable gas response changes were observed for other volatile organic compounds. Density functional theory calculations suggest that the enhanced acetone response is due to higher binding energies and electron transfer between Ag2S and acetone compared to other VOCs.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Pin Ma, Zehao Zhang, Jian Wang, Haibo Li, Hui Ying Yang, Yumeng Shi
Summary: Robust 2D VS2/Ti(3)C(2)T(x)MXene nanostructures with strong TiS covalent bond have been synthesized through a self-assembly approach, providing a conductive network for electrolyte penetration and rapid charge transfer. These nanostructures exhibit low sodium diffusion barrier and small charge transfer impedance, demonstrating excellent electrochemical performance and high-rate cycling stability, indicating the great potential of interfacial interactions for energy storage devices.
Article
Chemistry, Multidisciplinary
Lun Tan, Xianzhen Liu, Peng Wu, Liwei Cao, Wei Li, Ang Li, Zhao Wang, Haoshuang Gu
Summary: The research and development of high-performance NH3 sensors is important for environment monitoring and disease diagnosis applications. TiO2-modified monolayer MoS2 films with controllable TiO2 loading contents were fabricated and showed enhanced room-temperature NH3 sensing performance. The TiO2/MoS2 system with 95% surface coverage of TiO2 exhibited improved sensor response, low detection limit, wide detection range, good repeatability, and superior selectivity against other gases. The TiO2 modification improved the surface reactivity of the sensing layers and acted as gas-gating layers to modulate the electron depletion layer and the conductivity of the MoS2 films, resulting in improved NH3 sensing performance. This n-n hetero-compositing strategy provides a simple and cost-effective approach for developing high-performance NH3 sensors based on 2D semiconductors.
Article
Engineering, Electrical & Electronic
Vikas Kumar, Rahul Madan, Bajinder Singh, Devendra Mohan
Summary: Pristine zinc oxide (ZnO) and graphene oxide (GO)-based GO/ZnO nanocomposites were prepared for room temperature acetone gas sensors. Structural analysis showed that increasing wt% of GO did not affect the crystal structure of ZnO. The nanocomposites exhibited a hexagonal plate-like structure, with different thicknesses depending on the wt% of GO. Raman spectroscopy confirmed the presence of fundamental bands of ZnO and GO in the nanocomposites.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Nirmal Roy, Rupam Sinha, Harshal B. Nemade, Tapas K. Mandal
Summary: A resistive room temperature acetone gas sensor based on MoS2-CuO nanocomposites was developed and studied in this work. The sensor exhibited high sensitivity, fast response and recovery time towards acetone, with good repeatability, reproducibility and stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
B. Patella, R. R. Russo, A. O'Riordan, G. Aiello, C. Sunseri, R. Inguanta
Summary: The study introduced a nanostructured sensor based on copper nanowires, with rapid response time and easy in-field usability, for monitoring nitrate ions in water.
Article
Chemistry, Physical
Benrong Hai, Changsheng Liu
Summary: The use of reduced graphene oxide (rGO) as a skeleton improves the performance of bismuth oxide (Bi2O3) anode in sodium-ion batteries. The new Bi2O3@rGO heterostructure demonstrates high reversibility and stability, outperforming pure Bi2O3. This improvement can be attributed to the dual function of rGO in supporting Bi2O3 nanoparticles and providing conductive pathways.
Article
Chemistry, Physical
Xiaosha Cui, Yaxiong Zhang, Situo Cheng, Yupeng Liu, Zhipeng Shao, Zhenheng Sun, Yin Wu, Hongzhou Guo, Jiecai Fu, Erqing Xie
Summary: This research proposes a strategy to enhance the electrochemical performance of rechargeable aqueous Zn-ion batteries (AZIBs) by improving the successive electrochemical conversion reactions. By designing the electrode with a rational approach, an even and homogeneous electric field is achieved, leading to significantly improved efficiency of the electrochemical conversion reactions. The reversibility behaviors of byproducts are found to play a crucial role in determining the charge-discharge process and cycling stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sherin Rison, Rijo Rajeev, Vinay S. Bhat, Agnus T. Mathews, Anitha Varghese, Gurumurthy Hegde
Summary: Electrochemically deposited ZnO nanoparticles on a pencil graphite electrode coated with graphene provide a highly conductive and selective electrochemical sensing electrode for cortisol estimation. Various spectroscopic and microscopic techniques were used for surface morphological analysis, while XRD and FTIR were employed for structural characterization. The DPV analysis showed a linear range of 5 x 10(-10) M - 115 x 10(-10) M with a low limit of detection value of 0.15 nM, demonstrating excellent functionality for salivary cortisol determination at low concentrations.
Article
Nanoscience & Nanotechnology
Akash Varshney, Jamal Ahmad Khan, Irfan Ahmad, Imran Uddin
Summary: Room temperature synthesis of Bi2O3 nanoparticles was achieved in a single-pot reaction, resulting in nanoparticles with an average particle size of 14 nm and a wide band gap. The synthesized nanoparticles showed potential application in photocatalytic degradation of pollutants in industrial waste-water.
MICRO & NANO LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Mahin Baladi, Hakimeh Teymourinia, Elmuez A. Dawi, Mahnaz Amiri, Ali Ramazani, Masoud Salavati-Niasari
Summary: A new electrochemical sensor based on a glassy carbon electrode modified by TbFeO3/g-C3N4 nanocomposite has been developed. Characterization techniques including XRD, FTIR, FESEM, EDX, BET, VSM, and TEM were used to analyze the nanocomposite. The sensor demonstrated a catalytic effect against imatinib and showed excellent electrocatalytic response for detecting imatinib under optimized solution conditions. It also exhibited acceptable accuracy, reproducibility, and stability during all electrochemical tests, with analytical parameters compared to previous studies.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Analytical
Jae-Hyoung Lee, Jin-Young Kim, Ali Mirzaei, Myung-Sung Nam, Hyoun Woo Kim, Sang Sub Kim
Summary: Ultraviolet (UV) irradiation can enhance the photocatalytic properties of metal oxide semiconductors, such as titanium dioxide (TiO2), leading to reduced power consumption of metal oxide gas sensors. In this study, nickel oxide (NiO) and polyaniline (PANI) were loaded into TiO2 nanoparticles (NPs) using the sol-gel method to investigate their acetone-sensing properties under UV illumination. The PANI/NiO co-loaded TiO2-NP composite gas sensor showed the highest performance under UV illumination at room temperature, with a selective response to acetone gas and a low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
P. Silambarasan, I. S. Moon
Summary: The study involves synthesizing a nickel foam fabricated with potassium hydroxide and tetracyanonickelate (II) using a dip-coating method, which was found to enhance the sensor performance. The sensor showed good response to chlorobenzene concentrations ranging from 1 to 50 ppm, with high sensitivity. Stability tests confirmed the sensor's ability to measure chlorobenzene gas concentrations accurately.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Miao Liu, Zeyu Wang, Peng Song, Zhongxi Yang, Qi Wang
Summary: In this study, a high-performance room temperature gas-sensing material was successfully developed by utilizing MXene and reduced graphene oxide as building blocks. The resulting 3D aerogel shows excellent acetone-sensing performance at room temperature, with fast response and recovery times, as well as good reproducibility and selectivity. This strategy of composite 3D graphene/MXene architectures with metal oxide semiconductors provides a new pathway for future development of room temperature gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Nanasaheb M. Shinde, Siddheshwar D. Raut, Balaji G. Ghule, Ramesh J. Deokate, Sandesh H. Narwade, Rajaram S. Mane, Qixun Xia, James J. Pak, Jeom-Soo Kim
Summary: In this work, 3-D dandelion flower-like nickel chloride (NiCl2) nanostructures were synthesized for the first time through glycerol-mediated self-growth on nickel-foam (NiF) using a room-temperature wet chemical method. These NiCl2 flowers exhibited excellent electrocatalytic performance for the hydrogen evolution reaction (HER), outperforming NiF and NiCl2 electrodes prepared without glycerol. The glycerol-based NiCl2 electrode also showed superior reaction kinetics and stability compared to the other two electrodes.
Article
Energy & Fuels
Hoang Lam Nguyen, Hyosang Lee, Shoyebmohamad F. Shaikh, Hassnain Abbas Khan, Mohaseen S. Tamboli, Jae Hak Jung, Nguyen Tam Nguyen Truong
Summary: Cu-In-Ga-Se nanoparticles were synthesized and their effects on the properties of CuInGaSe2 thin films were investigated. The resulting CIGS thin film showed a tetragonal structure and high sunlight absorption, with a band gap energy of approximately 0.94 eV. Non-vacuum GT90-CIGS-based solar cells achieved a maximum power conversion efficiency of approximately 8.3% with an optimized device structure of Al/ITO/ZnO/CdS/CIGS/Mo.
Article
Energy & Fuels
Zeenat A. Shaikh, Nanasaheb M. Shinde, Pritamkumar V. Shinde, Sushil S. Sangale, Siddheshwar D. Raut, Shoyebmohamad F. Shaikh, Satish U. Ekar, Mohaseen S. Tamboli, Rajaram S. Mane
Summary: In this study, a stretchable, foldable, and flexible commercial sponge has been converted into a conducting material by incorporating polypyrrole (PPy). Bismuth oxide (Bi2O3) electrode material with a wool ball-like morphology is synthesized over PPy-coated sponge, creating a hybrid Bi2O3@PPy electrode. The unique morphology of Bi2O3 and the porous structure of PPy@sponge result in a high number of active sites and short diffusion pathways, enabling efficient electron-ion transportation. A pencil-type asymmetric supercapacitor using Bi2O3@PPy//graphite rod electrodes delivers high energy and power densities, as well as excellent cycling stability.
Article
Energy & Fuels
Sandesh H. Narwade, Nanasaheb M. Shinde, Balaji G. Ghule, Ji-Hyun Jang, Rajaram S. Mane
Summary: The synergistic electrochemical performance of bismuth molybdenum sulphide (BMS) nanosheets benefits fast ion exchange kinetics in electrolyte solution for energy storage performance. Bismuth sulphide (BS), molybdenum sulphide (MS), and BMS electrode materials with different morphologies are grown on a stainless-steel (SS) conducting substrate using a wet chemical process. The BMS nanosheet-like electrode achieves a specific capacitance of 947.4 F g-1 at a current density of 0.6 Ag-1 with nearly 97% stability, outperforming BS and MS electrode materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Balaji G. Ghule, Ji-Hyun Jang
Summary: First-principles-based density functional theory (DFT) calculations were used to investigate the electrochemical CO2 reduction (ECR) activity of cation-doped Bi2O3. The ECR reaction over pure and doped Bi2O3 (100) surfaces was studied, and Gibbs free energy diagrams of HCOOH formation via COOH and HCOO pathways were demonstrated. Doping can alter the rate-determining step and reduce the Gibbs free energy, resulting in enhanced CO2 reduction activity on the TiZr-Bi2O3 surface.
Article
Chemistry, Multidisciplinary
Balaji G. Ghule, Minkyeong Kim, Ji-Hyun Jang
Summary: We propose a scheme for predicting the sensitivity of photoresist using a machine learning (ML) workflow based on previously reported experimental data. Various ML models, including Linear Regression, Kernel Ridge Regression, Gaussian Process Regressor, Random Forest Regressor, and Multilayer Perceptron Regressor, were evaluated to identify the best sensitivity prediction model. The experiment was conducted on the Google Colab platform using the Materials Simulation Toolkit for Machine Learning and Sci-kit Learn. Different ensemble models were used without splitting the dataset to determine the prediction accuracy of the ML models. Hyperparameter optimization was performed with a 70/30 ratio, followed by K-Fold cross-validation to improve the model prediction performance. The optimized ML model achieved a prediction performance of R-2 = 0.83, RMSE = 10.53, and MARE = 0.68. Thus, by optimizing the hyperparameters in the ML model, the sensitivity of photoresist materials can be predicted with improved accuracy.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Shoyebmohamad F. Shaikh, Sikandar Aftab, Bidhan Pandit, Abdullah M. Al-Enizi, Mohd Ubaidullah, Satish Ekar, Sajjad Hussain, Yogesh B. Khollam, Pravin S. More, Rajaram S. Mane
Summary: The successful deployment of sodium-ion batteries requires high-performance, sustainable, and cost-effective anode materials with a high current density. In this study, sodium disulphide (NiS2) was prepared as a composite with activated carbon (C) using a hydrothermal synthesis route. The NiS2/C composite exhibited well-defined diffraction peaks of NiS2 in the X-ray diffraction pattern, and had a surface area close to 148 m^2 g^-1 according to the Brunauer-Emmett-Teller (BET) study. With a current density of 50 mA g^-1, the NiS2/C composite showed a high capacity of 480 mA h g^-1 during the initial cycle, which decreased to 333 mA h g^-1 after 100 cycles. It also demonstrated exceptional rate capability, delivering a capacity of 270 mA h g^-1 at a high current density of 2000 mA g^-1. Ex situ X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses provided insights into the chemical bonding and changes during electrochemical redox cycling, improving the understanding of the sodium storage mechanism and offering guidance for developing high-performance electrode materials for rechargeable sodium-ion batteries.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
V. Manikandan, G. Ayyannan, Iulian Petrila, Rajaram S. Mane, Kamil Sobczak, J. Chandrasekaran, Robert D. Crapnell, Craig E. Banks
Summary: Ni-doped alumina nanoflakes show efficient and fast response to target gas SO3 at different concentrations, with improved response and shorter response time at higher temperatures. The sensor demonstrates stability and reproducibility over a long period of testing, making it suitable for practical applications. The Ni-dopant enhances oxygen adsorption and active sites, contributing to the excellent sensing properties.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sukhvinder Kaur Sukhmani, Rajaram S. Mane, Tabassum A. J. Siddiqui, Shoyebmohamad F. Shaikh, Sajjad Hussain
Summary: The recent trend in research is to use abundant seawater to modify metal surfaces for energy generation, storage, transport, and water-splitting technologies. This study focuses on using seawater as a solvent to modify the surface of 3D nickel-foam (NiF) to Na2O-NiCl2@NiF as an electrode material in electrochemical supercapacitors and water-splitting electrocatalysis applications. The Na2O-NiCl2 obtained from this process has shown excellent electrocatalytic activities and moderate energy storage ability, making it a promising material for energy and water applications.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Qinghua Wu, Zhe Wang, Qianku Hu, Yuhuan Ji, Dandan Li, Junkai Wang, Qixun Xia, Libo Wang, Aiguo Zhou
Summary: The lithiation-induced phase transition behaviors of two-dimensional fluorinated MXenes during Li-ion extraction/intercalation were systematically investigated using first-principles density functional calculations. The results revealed that fluorine atoms in the nine MXenes moved from the FCC site (or HCP site for Ta2CF2) to the TOP site during Li adsorption, which was confirmed by ab initio molecular dynamic simulations. The evaluation of lithium storage properties, including band structure, density of state, diffusion energy barrier, average voltage, and storage capacity, showed that V2CF2 and Ti2CF2 were the optimal candidates for LIB electrode materials. The structural phase transition in fluorinated MXenes led to improvements in cycle stability, storage capacity, average voltage, and other lithium storage properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Computer Science, Information Systems
Medha Gijare, Sharmila Chaudhari, Satish Ekar, Shoyebmohamad F. Shaikh, Rajaram S. Mane, Bidhan Pandit, Muhammad Usman Hassan Siddiqui, Anil Garje
Summary: The important electrochemical measurements of rGO/TiO2 electrodes for glucose sensor application are reported in this work. The sensitivity, stability, and reproducibility of the sensor electrodes in evaluating glucose concentration in serum are investigated. Citrus limetta fruit peel waste is used to synthesize green reduction of graphene oxide (rGO), and the rGO/TiO2 composite obtained by microwave heating method is analyzed for structural and morphological properties. The rGO/TiO2 sensor electrode shows high sensitivity, stability, and repeatability, with a response time of 5 s and a minimum detection limit of 0.32 μM of glucose.
Article
Chemistry, Physical
Revati P. Potdar, Yogesh B. Khollam, Shoyebmohamad F. Shaikh, Deepika Bhandari, Abdullah M. Al-Enizi, Supriya A. Patil, Pravin S. More
Summary: This study introduces a modified optical fiber sensor coated with functionalized gold nanoparticles to detect copper ions. The sensor showed an increased output voltage with increasing concentrations of Cu2+ ions. It exhibited a polynomial relationship with Cu2+ ion concentration and higher selectivity compared to other ions.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
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)
