Article
Chemistry, Multidisciplinary
Keji Wan, Guoqiang Wang, Shuwen Xue, Yawen Xiao, Jinjin Fan, Longdi Li, Zhenyong Miao
Summary: The study synthesized humic acid and L-cysteine-codecorated magnetic Fe3O4 nanoparticles, which demonstrated excellent adsorption capacity and selectivity, with a preference for adsorbing Hg2+ in competitive adsorption. XPS analysis suggested that the enhanced adsorption capacity of this nanomaterial is due to the complexing abilities and ion exchange capabilities of multiple functional groups with Hg2+.
Article
Environmental Sciences
Yanqing Song, Ping Huang, Hong Li, Ruiyue Li, Wei Zhan, Yaguang Du, Mengyu Ma, Jirong Lan, Tian C. Zhang, Dongyun Du
Summary: In this study, the decorated MCM-41 with iron and magnesium oxide (Fe/Mg-MCM-41) was found to be an excellent adsorbent for arsenic(V) removal from water, with high adsorption capacity, wide pH application range, and regenerability. The characterization analysis and experimental results confirmed the promising potential of Fe/Mg-4-MCM-41 as an adsorbent for treating As-contaminated wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Donghui Kou, Wei Ma, Shufen Zhang
Summary: A 1D photonic crystal was constructed by integrating a specifically designed thiourea-functionalized nanocopolymer layer with a mesoporous TiO2 layer, which features visually quantitative determination and effective adsorption toward Hg2+. The film exhibits high uptake capacity, desirable selectivity toward Hg2+, and easy regeneration, making it suitable for environmental determination and remediation.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Chemical
Shuangli Li, Shiqi Li, Nuan Wen, Dong Wei, Yongfang Zhang
Summary: The bifunctionalized magnetic mesoporous silica material, NZVI-SH-HMS, successfully synthesized with thiol and nanometer zero-valent iron was effective in removing lead and cadmium ions from aqueous solution. The material demonstrated good porous properties, high adsorption capacity, and excellent adsorption performance in different simulated wastewater, indicating promising capabilities for heavy metal ion removal in actual water environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Applied
Azam Marjani, Roozbeh Soltani, Mahboubeh Pishnamazi, Mashallah Rezakazemi, Saeed Shirazian
Summary: N-methylimidazolium-functionalized pollen-like mesoporous silica (MI-PLMS) is successfully prepared by a soft-templating hydrothermal method for the first time, with a high surface area of 400 m2 g-1. MI-PLMS has potential applications in drug delivery, water treatment, and catalysis due to its easy synthesis and abundant surface functional groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Changjin Jiang, Rongtao Lyu, Ting Zhang, Zhaoguang Yang
Summary: A facile hydrothermal method was used to prepare Fe-NH2-SMS adsorbent for efficient removal of As(V) from water. The adsorbent exhibited fast adsorption rate, high adsorption capacity, and identified adsorption mechanisms involving electrostatic attraction and inner-sphere complexation. Studies on different conditions showed Fe-NH2-SMS to be a promising adsorbent for rapid removal of As(V) from water.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Chemical
Fengtian Bai, Xin Liu, Suleiman Sani, Yumin Liu, Wei Guo, Chenggong Sun
Summary: A series of amine-functionalized CO2 sorbents were synthesized by grafting mono-and tri-amine substituted trialkoxysilanes on mesocellular siliceous foam (MCF) via a facile wet grafting method. The amine grafted MCF exhibited excellent CO2 adsorption capacity and stability, attributed to the large pore volume and pore size coupled with superior interconnectivity of MCF allowing more surface silanol groups available and accessible for amino silanes. These findings suggest that the porous structure and amine loading level play significant roles in enhancing both the CO2 adsorption capacity and adsorption rate of the developed sorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Rene G. Moran-Salazar, Gregorio G. Carbajal-Arizaga, Jose A. Gutierrez-Ortega, Jessica Badillo-Camacho, Ricardo Manriquez-Gonzalez, Ilya G. Shenderovich, Sergio Gomez-Salazar
Summary: An environmentally friendly adsorbent functionalized with L-cysteine was synthesized via sol-gel processing and effectively used for removing As(V) from aqueous media. The adsorbent exhibited enhanced As(V) uptake capacities with a maximum of 147.5 mg g(-1) at pH 3, reaching equilibrium within 120 min. The kinetic data followed a pseudo-second order model, while the isotherm data fitted well with the Freundlich model. The adsorbent showed a 23% decrease in removal capacity after 5 adsorption/desorption cycles. The presence of cysteine on the surface of the adsorbent was confirmed by solid state NMR and XPS techniques, and the efficient adsorption of As(V) was attributed to the formation of a bidentate complex between the AsO2(OH)(2)(-) anion and the NH3+ and carboxyl groups of L-cysteine. The results highlight the potential of SG-3PS-Cys in the treatment of As(V) in industrial wastewater discharges.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yanming Xu, Shuyuan Zhang, Yuhao Zhao, Jingjing Yang, Shusu Shen, Ganwei Zhang, Yongfu Guo, Xinyu Zheng
Summary: Kaolin was bi-functionally modified using L-cysteine and polypyrrole to enhance its adsorption capacity for Hg2+ removal. The optimized conditions were pH 7.9, temperature 315 K, initial concentration 40 mg/L, and dosage 0.05 g/L, resulting in an optimal adsorption capacity of 482.71 mg/g. The adsorption mechanism involves complexation and electrostatic attraction.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Materials Science, Biomaterials
Morvarid Aghayan, Ali Mahmoudi, Mohammad Reza Sazegar, Forogh Adhami
Summary: The study introduces a new series of mesoporous silica nanoparticles incorporated with iron and cobalt, showing great potential in sensing applications. The nanomaterial exhibited high sensitivity in detecting H2O2 and Cys and can be a promising sensor for medical diagnostics and biological systems.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Chemistry, Applied
Kiran Mumtaz, Sajid Iqbal, Shabnam Shahida, Munib Ahmed Shafique, Mohammad Wasim, Bashir Ahmad
Summary: In this study, diphenylcarbazide functionalized mesoporous silica (DPC-SBA-15) was successfully synthesized for selective removal of chromium (Cr(VI)) from aqueous solution. Characterization techniques such as small-angle XRD, SEM, HR-TEM, FTIR, and CHNS elemental analysis were used to investigate the structural characteristics and surface modification of DPC-SBA-15. The results showed that DPC-SBA-15 exhibited excellent adsorption performance for Cr(VI) ions under optimized conditions, with fast initial kinetics and a high removal efficiency.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kivanc Basaran, B. Umay Topcubasi, Tugba Davran-Candan
Summary: This study investigated CO2 adsorption over functionalized mesoporous silica and found that hydrogen bonding interactions with surface silanols and neighboring amines were critical for the formation and stabilization of the adsorption products. It was also shown that surface silanols played a significant role in the thermodynamics and kinetics of the reaction mechanism, and could directly participate in the reaction. The impact of amine functionality on the reaction mechanism was found to be less conclusive compared to surface silanols under the conditions employed in this study.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Chemical
Yunlu Li, Liyuan Li, Hongliang Zhao, Jichang Liu, Kake Zhu
Summary: Researchers have discovered that functionalizing the surface of mesoporous silica MCM-41 can immobilize Ag+ on the material, transforming it from an unselective porous solid into an olefin selective molecular sieve material suitable for liquid phase binary mixture separations. Results show that ionically anchored Ag+ with intact complexation orbitals outperform coordinatively immobilized Ag+ in terms of antileaching property, olefin separation factor, and recyclability. The use of small mesopore size can boost olefin adsorption selectivity by compressing the available space for access of paraffins.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jiayin Zhang, Yongde Ma, Wenquan Wu, Zhenping Cai, Yanning Cao, Kuan Huang, Lilong Jiang
Summary: Carboxylic functionalized mesoporous polymers synthesized through a one-pot solvothermal route exhibit fast, efficient, and selective adsorption of NH3. The mesoporous structure and acidic site concentration of these polymers can be adjusted, and the NH3 adsorption is highly reversible.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Karolina Wieszczycka, Kinga Filipowiak, Irmina Wojciechowska, Tomasz Buchwald, Katarzyna Siwinska-Ciesielczyk, Beata Strzemiecka, Teofil Jesionowski, Adam Voelkel
Summary: Novel ionic liquid-functionalized mesoporous silicas were synthesized for the removal of Pb(II), Cd(II) and Zn(II) from aqueous solutions, showing promising adsorption capacities for these heavy metal ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Spectroscopy
Qing Li, Zhaoqing Cai, Yan Fang, Zheng Wang
Summary: Matermetallomics is an emerging field that focuses on understanding the role of metallic elements in materials. This research area investigates the significance and contributions of metallic elements in materials science, utilizing a variety of analytical techniques to explore structure-activity relationships.
ATOMIC SPECTROSCOPY
(2021)
Article
Spectroscopy
Qing Li, Yan Fang, Jianghua Liu, Chengrong Zhang, Zheng Wang
Summary: In this study, LA-ICP-MS was utilized to map the elemental images of curved surface samples by segmenting and recombining. The investigation also focused on the influence of parameters on lateral resolution. The method was applied to imaging analysis of lanthanum in an alumina ceramic tube, revealing non-uniform distribution of lanthanum within the tube.
ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Xiaoxu Peng, Mingyue Zhao, Mingli Yuan, Zheng Wang
Summary: A highly sensitive method for the determination of lead was developed by coupling SAGD-OES with HG, achieving a low detection limit and improved resistance to matrix-induced interferences. The optimized system parameters led to successful analysis of certified reference materials and human blood samples, demonstrating the potential application of this method in real-world samples.
Review
Chemistry, Multidisciplinary
Xiaoxu Peng, Zheng Wang
Summary: The article provides an overview of the development of solution electrode glow discharge (SEGD) in various fields and discusses its discharge mechanism. SEGD has unique advantages for optical emission spectrometry and mass spectrometry, and it has broad research potential in biology and medicine, material synthesis, electrochemistry, etc.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhaoqing Cai, Huijun Zou, Yirui Chen, Zheng Wang
Summary: In this study, a sample introduction technique based on SCGD of a portable design for ICP-OES was proposed for sensitive determination of mercury. The method achieved a detection limit of 0.22 μg/L, which was significantly lower than traditional pneumatic nebulization. The accuracy and practicality of the method were demonstrated through the analysis of various samples.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Analytical
Zhaoqing Cai, Zheng Wang
Summary: In this study, a novel microplasma-assisted vapor generation technique based on solution anode glow discharge (SAGD) was developed as a substitute for the routinely used pneumatic nebulization (PN) in inductively coupled plasma-optical emission spectrometry (ICP-OES). The newly proposed SAGD-ICP-OES system achieved significantly lower detection limits for Cd and Hg compared to conventional PN, as well as good accuracy for multi-element analysis. The system demonstrated its applicability for ultra-trace determination of Cd and Hg through the analysis of certified reference materials and spiked tap water samples.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Yue Li, Guoxia Zhang, Zhaoqing Cai, Zheng Wang
Summary: This study proposes a method to enhance the sensitivity of laser-induced breakdown spectroscopy (LIBS) using atmospheric pressure glow discharge, with further improvement achieved through cylindrical confinement. The technique was evaluated under laser energy of 30 mJ, resulting in significant enhancement of emission intensities and decrease in detection limits for various elements in soil samples. The possible mechanism of signal enhancement was explained by studying plasma electron temperature and density.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Xiangyu Chen, Zhaoqing Cai, Zheng Wang
Summary: In this study, a modified solution cathode glow discharge atomic emission spectrometry (SCGD-AES) device with a portable semiconductor anode refrigeration unit was used to detect metal elements in electroplating sewage. The improvement in thermal stability and sensitivity was achieved by adding the portable refrigeration unit. The method showed high performance and accuracy in the detection of trace elements in electroplating sewage.
Article
Spectroscopy
Zhaoqing Cai, Zheng Wang
Summary: The use of solution anode glow discharge (SAGD) in hydrogen-helium mixture was evaluated for optical emission spectrometry (OES) of arsenic (As) in solution. The enclosed structure and non-electrode hollow channel were adopted to integrate the functions of vapor generation, atomization, and excitation of As. The study found that propionic acid had the best amplification effect, and the detection limit of SAGD-OES for As was better than that of the fully open-to-air discharge system. SAGD was more susceptible to chemical interferences induced by transition metal elements compared to alkali metals and alkaline earth metals.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Spectroscopy
Yuquan Xu, Zhaoqing Cai, Wenxin Cui, Qing Li, Jiayue Xu, Zheng Wang
Summary: A laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method is developed for in-situ quantitative imaging of trace impurity elements in Bi4Si3O12 (BSO) crystals, with low detection limit and high spatial resolution. The calibration curves for each element showed regression coefficients greater than 0.99, and the detection limits (DLs) were determined. LA-ICP-MS measurements were consistent with conventional ICP-MS results, revealing segregation phenomena of elemental impurities in the axial direction of the BSO crystal, and visualizing the distribution of impurity elements in the dendritic crystal defect region.
ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Wenxin Cui, Zhaoqing Cai, Qing Li, Haiyun Qu, Jiaqian Zheng, Dengguang Yu, Junfeng Chen, Zheng Wang
Summary: A laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method was proposed for in-situ determination of yttrium and trace elements in yttrium-doped barium fluoride (BaF2: Y) crystals. A micro-damage procedure was investigated to quantify the segregation coefficient of doping elements, revealing an increasing yttrium doping concentration from the seed end to the tail end in BaF2: Y crystals. This method demonstrated higher mass sensitivity in micro-area analysis and was used to quantify impurity content and distribution during crystal growth. The accuracy of the method was verified using inductively coupled plasma mass spectrometry/atomic emission spectroscopy (ICP-MS/AES) with wet-chemical pretreatment.
Article
Chemistry, Physical
He Lv, Yanan Liu, Ping Zhao, Yubin Bai, Wenxin Cui, Shuling Shen, Yang Liu, Zheng Wang, Deng-Guang Yu
Summary: Piezophotocatalytic technology is a promising approach for wastewater treatment. A novel piezoelectric material, the flexible bamboo-like BaTiO3/ZnO Janus nanofibers membrane (BTO/ZO JNM), was fabricated and exhibited high removal efficiency for bisphenol A, congo red, methylene blue, and tetracycline hydrochloride. The BTO/ZO JNM process with significantly raising macroscopic polarization provides a new strategy for the development of piezoelectric materials for the treatment of mixed pollutants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Analytical
Li Yue, Zhang Guo-Xia, Cai Zhao-Qing, Qiu Han-Xun, Wang Zheng
Summary: In this study, a new method combining atmospheric pressure glow discharge and cylindrical confinement was proposed to enhance the detection sensitivity of laser-induced breakdown spectroscopy for rare earth elements in soil. The proposed system was verified to be accurate through the detection of certified reference materials and an unknown soil sample.
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Rong Rong, Zhaoqing Cai, Xiaoyan Li, Zheng Wang
Summary: A highly sensitive method for determining mercury was developed based on DC atmospheric pressure glow discharge and cold vapor generation, with the accuracy and practicality verified through experiments.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Shi-Juan Zhang, Chang Rui, Xue-Ting Wang, Zhong-Yin Ji, Li Li, Jin-Mao You
Summary: A pair of cationic stable isotope labelling probes were designed and synthesized for the labeling and analysis of alpha-dicarbonyl compounds. This labeling strategy enhanced MS sensitivity, reduced matrix effect and improved method accuracy. With optimization, satisfactory results were obtained in the analysis of alpha-dicarbonyl compounds in food.
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)
