Article
Materials Science, Ceramics
Amir Abharya, Ahmad Gholizadeh
Summary: The magnetically-separable Fe3O4-rGO-ZnO ternary catalyst designed in this work showed great potential for the destruction of organic compounds from wastewater using the Fenton chemical oxidation method at neutral pH, with only a slight drop in catalytic efficiency after 5 cycles of repeated use.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Shakeel Ahmed, Muhammad Ashraf, Sheraz Yousaf, Ibrahim A. Alsafari, Mehwish Akhtar, Muhammad Shahid, H. H. Somaily, Muhammad Farooq Warsi
Summary: This study demonstrates the fabrication and performance of glucose sensor based on zinc oxide nanoparticles (ZnO NPs) and their composite. ZnO nanostructures possess fascinating properties like large surface area, superior crystal nature and good electrical as well as optical properties. The prepared iron doped ZnO/rGO based composite showed greater sensitivity and electrocatalytic activity than other compositions considered in this study.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ali Moulahi
Summary: The study successfully elaborated undoped and Mg doped ZnO nanostructures using the polyol process and characterized the final particles through various analytical techniques. It was found that Mg doping significantly enhanced the photocatalytic properties of ZnO nanoparticles.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Environmental Sciences
Ahmed Abdulkadhim Kraidi, Mohsen Mansouri, Elham Karamian
Summary: In this study, cerium-doped ZnO nanoparticles were synthesized and effectively used for the photocatalytic degradation of phenol. By adjusting the dopant type, concentration, and light source power among other variables, a high conversion rate of 100% for phenol was achieved under the optimal conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yu Zhong, Fengming Wang, Chuangming Liang, Zeyi Guan, Bingshang Lu, Xin He, Weijia Yang
Summary: This work presents the fabrication of ZnO@MoS2 core-shell micro/nanomaterials and their photocatalytic performances. The ZnO@MoS2 core-shell micro/nanorods heterostructures were grown using a two-step hydrothermal method. Characterization techniques including X-ray diffraction, scanning-electron microscopy, Raman spectra, and UV-visible spectra were used to confirm the structure of the ZnO@MoS2 core-shell micro/nanorods. Methylene blue was employed to evaluate the photocatalytic performance, revealing that the shape of the MoS2 shell layer depended on the growth time. Additionally, it was found that the photocatalytic performance was significantly influenced by the growth time of the MoS2 nanosheets, with the ZnO@MoS2 core-shell heterostructures grown for 6 hours showing the highest efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Hongjun Dong, Yan Zuo, Ning Song, Shihuan Hong, Mengya Xiao, Daqiang Zhu, Jingxue Sun, Gang Chen, Chunmei Li
Summary: The photocatalytic activity of bimetallic co-doped g-C3N4 can be significantly enhanced due to improved charge separation efficiency and visible light harvest ability. Density functional theory investigations show that the incorporation of Co/V into g-C3N4 results in a bimetallic synergetic regulating effect on electronic structure, improving physical, optical, and photoelectrochemical properties.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Huimin Yin, Suyu Zhou, Junhui Liu, Mingju Huang
Summary: In this study, porous ZnO nanorods were prepared and used as a platform to construct the MoS2/ZnO composite material, which exhibited superior photocatalytic performance. The enhanced photocatalytic activity can be attributed to the formation of heterojunctions and efficient separation of photo-generated charge carriers.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Kian Yousefipour, Rasoul Sarraf-Mamoory, Amin Yourdkhani
Summary: Researchers improved the electrical conductivity and supercapacitive properties of hydrated nickel molybdate by synthesizing Fe-doped HNMO/rGO materials. They found that the material with 15 mg mL(-1) graphene oxide suspension exhibited the best electrochemical performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Electrical & Electronic
Mani Govindasamy, Sea-Fue Wang, Asma A. Alothman, Razan A. Alshgari, P. S. Ganesh
Summary: In this study, MoS2 and WS2 catalysts were successfully prepared using ultrasonic-assisted hydrothermal method, exhibiting high stability and excellent photocatalytic performance against azo dyes. The results confirm their ability to degrade reactive red 120 efficiently.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Jiaoming Wang, Xiang Yu, Xionghui Fu, Yi Zhu, Yuanming Zhang
Summary: By co-incorporating polyaniline and reduced graphene oxide with Ag3PO4, a composite material with synergistic effect was formed, leading to improved carrier separation efficiency and photocatalytic performance. The study demonstrated that the composite exhibited superior removal rate towards ciprofloxacin and enhanced stability after consecutive cycles.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Biochemistry & Molecular Biology
Yayang Wang, Xiaojie Yang, Jiahui Lou, Yaqiong Huang, Jian Peng, Yuesheng Li, Yi Liu
Summary: Environmental pollution, especially water pollution, is becoming increasingly serious. Organic dyes are harmful pollutants that destroy ecosystems. A series of graphitic carbon nitride (g-C3N4)/ZnO photocatalysts were synthesized through a grinding method. The photocatalytic performance of the composite material was enhanced by the formation of heterojunctions and exposure to electron beam radiation.
Article
Biotechnology & Applied Microbiology
Rosendo Lopez Gonzalez, Orbelin de la Fuente, Ruth Lezama Garcia, Melina del Carmen Uribe Lopez, Patricia Quintana Owen, Maria Carmen Hidalgo Lopez, Mayra Angelica Alvarez Lemus
Summary: Phenol and its derivatives pose a serious environmental concern, but zinc oxide-based photocatalysts show promise in addressing this issue. ZnO nanoparticles, synthesized through precipitation and calcination methods, exhibited good photocatalytic activity under visible light. The study also found that the generation of hydroxyl radicals decreased with the reuse of ZnO, likely due to the presence of adsorbed by-products on its surface.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Wei Meng Liu, Jin Li
Summary: This study reports the synthesis of nitrogen-doped reduced graphene oxide (N-rGO)/zinc oxide (ZnO) composite photocatalysts by one-step hydrothermal method. Results showed that the catalyst exhibited the best photocatalytic degradation ability with 4 wt% nitrogen content. XPS tests indicated that the catalytic effect of the sample dominated by pyridinic nitrogen was significantly improved.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Abniel Machin, Kenneth Fontanez, Jose Duconge, Maria C. Cotto, Florian I. Petrescu, Carmen Morant, Francisco Marquez
Summary: This study investigates the photocatalytic degradation of two quinolone-type antibiotics in aqueous solution using ZnO nanoparticle-based catalysts, and optimizes the efficiency of the catalysts by incorporating different co-catalysts. The most efficient catalyst, 10%Au@ZnONPs-3%rGO-3%gC(3)N(4), achieves degradation rates of over 96% for both pollutants. The high efficiency is attributed to the catalyst's large specific surface area and its ability to absorb radiation in the visible region.
Article
Chemistry, Physical
Naz Ugur, Zeynep Bilici, Kasim Ocakoglu, Nadir Dizge
Summary: Photocatalysis using semiconductor-based hybrid materials, such as ZnO/MG, has shown improved environmental effects and energy applications. The introduction of a narrow bandgap co-catalyst, such as MoS2-rGO, has demonstrated a positive synergistic effect, accelerating charge separation and electron transport properties for enhanced photocatalytic activity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Nanoscience & Nanotechnology
Manisha Sharma, Ashish Kumar, Venkata Krishnan
Summary: This study compared the photocatalytic activities of two oxygen vacancy-rich materials for the degradation of a model pharmaceutical pollutant under visible light irradiation. The results showed that the oxygen vacancy-treated materials exhibited higher photocatalytic activity due to suppressed charge carrier recombination and increased surface active sites. Additionally, scavenger studies were conducted to explain the role of photoinduced charge carriers in the degradation mechanism. Furthermore, the oxygen vacancy-rich photocatalysts remained stable even after three consecutive cycles, making them promising materials for practical applications.
Article
Materials Science, Multidisciplinary
Ijlal Haider, Milad Mosallaei, Kyriacos Yiannacou, Antti Vehkaoja, Setareh Zakeri, Veikko Sariola, Vipul Sharma
Summary: The pressure to reduce global e-waste has been increasing, and researchers have developed a simple method to create biodegradable electrodes using leaf skeletons. These electrodes are transparent, flexible, hydrophobic, and have excellent electrical and mechanical properties. The functionality of these electrodes has been demonstrated in applications such as flexible heating elements and biosignal measurements.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Chemical
Ajay Kumar, Manisha Sharma, Priyanka Choudhary, Venkata Krishnan
Summary: This study presents a novel ternary plasmonic photocatalyst consisting of upconversion, plasmonic, and semiconducting materials. The ternary nanocomposites are capable of harnessing ultraviolet, visible, and near-infrared light, and show improved photocatalytic activity for the elimination of tetracycline under these light irradiations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Devendra Sharma, Priyanka Choudhary, Sahil Kumar, Venkata Krishnan
Summary: Transition metal phosphides (TMP) possess unique properties that can be used for various catalytic applications. However, the application of TMP in organic catalysis is still facing complex challenges. Therefore, the controlled synthesis of TMP-based catalysts and investigation of reaction mechanisms are important for achieving desired applications. This review provides a comprehensive analysis of recent advancements in synthetic strategies for tailoring the properties of TMP and summarizes their catalytic potential in organic transformation reactions.
Article
Nanoscience & Nanotechnology
Priyanka Choudhary, Kamlesh Kumari, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: A metal-free methodology using boron nitride (BN) nano-sheets functionalized with hydroxyl groups (BN-OH) has been developed for the synthesis of phenols from arylboronic acids. The hydroxyl groups on the BN nanosheets serve as active sites for the hydroxylation reaction. The optimized reaction parameters and the use of water as solvent contribute to high catalytic efficiency and eliminate the need for toxic solvents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Tripti Chhabra, Venkata Krishnan
Summary: This study reports the development of sulfonic acid functionalized niobium pentoxide (Nb2O5) for the synthesis of high dense carbon biofuel precursors from low dense biomass derivatives. The catalysts used are a combination of Lewis acid catalyst, niobium pentoxide, and sulfonic acid functionalized catalyst (S-Nb2O5). The most effective catalyst, S3-Nb2O5, shows a maximum yield of 87% for C-15 product at relatively low temperature (50 degrees C) under neat conditions.
Article
Engineering, Biomedical
Reetta Sartoneva, Inari Lyyra, Maiju Juusela, Vipul Sharma, Heini Huhtala, Jonathan Massera, Minna Kellomaki, Susanna Miettinen
Summary: Surgical treatment of urothelial defects with autologous genital or extragenital tissue grafts is susceptible to complications. Tissue engineering using novel biomaterials such as PLA/PBSu blend could provide new treatment options by supporting growth and differentiation of urothelial cells and smooth muscle cells.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: We demonstrate a facile fabrication of Ce doped ZnO nanowires with outstanding photodegradation performance by thermal decomposition route. The impact of cerium doping on structure, optical and photodegradation behavior of ZnO nanowires was investigated. The results showed that ZnO nanowires doped with 0.5% Ce exhibited excellent photodecolorization performance and high efficiency in dye removal under sunlight exposure.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Priyanka Choudhary, Shivangi Singh Chauhan, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: This work reports a sustainable method for the synthesis of aromatic nitriles using metal-free heterogenous catalysts. A sulfonated boron nitride (S-BN) catalyst was used to achieve high yields of nitriles from aromatic alcohols and aqueous ammonia under mild conditions. The catalyst was prepared by exfoliation and sulfonation of low cost hexagonal boron nitride, resulting in the generation of active centers. The reaction showed excellent yields and high green metric parameters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sameer Mohanty, Manisha Sharma, Ajay Kumar, Venkata Krishnan
Summary: Sunlight, as the most abundant and cleanest form of energy, has great potential in photocatalysis. In this study, multi-component interfacial heterostructures were developed and utilized for photocatalytic reactions under natural sunlight, demonstrating remarkable performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Tripti Chhabra, Balendu Bisht, Sahil Kumar, Venkata Krishnan
Summary: The catalyst conversion of lignocellulose derived products to value added chemicals is important in solving energy crisis. In this study, a phosphomolybdic acid (PMA) supported on boron-nitride (BN) nanosheets catalyst was prepared and optimized for the conversion of fructose to 5-hydroxymethylfurfural (5-HMF). It was found that the addition of sulfuric acid (H2SO4) enhanced the catalytic activity and formation of levulinic acid (LA), in addition to 5-HMF.
Article
Chemistry, Multidisciplinary
Ashish Kumar, Manisha Sharma, Sajjan Sheoran, Shilpi Jaiswal, Abhijit Patra, Saswata Bhattacharya, Venkata Krishnan
Summary: This study successfully synthesized nitrogen-doped SrTiO3 nanocubes with a one-step solvothermal method, and achieved reliable photocatalytic NH3 generation by eliminating surface nitrogenous impurities through a rigorous cleaning procedure. The contribution of surface impurities to NH3 formation was deduced, and it was found that defect-containing SrTiO3 materials exhibited the highest NH3 formation activity under natural sunlight in pure water, attributed to the tuned defect sites, enhanced surface area, and efficient charge separation. Therefore, this study provides a simple and affordable method for the synthesis of nitrogen-doped catalysts and expands the application of perovskite oxide materials for the fabrication of efficient photocatalysts for sustainable NH3 production.
Review
Chemistry, Multidisciplinary
Ajay Kumar, Priyanka Choudhary, Tripti Chhabra, Harpreet Kaur, Ashish Kumar, Mohammad Qamar, Venkata Krishnan
Summary: The rational design and development of highly efficient and stable photocatalysts is a major focus in the field of photocatalysis. This review article provides a critical comprehensive overview of the development of plasmon mediated GCN based photocatalysts and summarizes the recent progress in the field of energy conversion, environmental remediation, and organic transformations. It also discusses the challenges associated with stability, low light absorption, and fast recombination of charge carriers, and introduces the use of GCN coupled with plasmonic materials to enhance photocatalytic activity.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Manisha Sharma, Ashish Kumar, Deepika Gill, Shilpi Jaiswal, Abhijit Patra, Saswata Bhattacharya, Venkata Krishnan
Summary: In this study, W-doped Bi2MoO6 nanosheets were synthesized and demonstrated their potential as efficient photocatalysts for the simultaneous production of NH3 and NO3- ions under visible light irradiation. The optimal molar ratio of doped tungsten showed the best photocatalytic NH3 production without using any sacrificial agents. The enhanced photocatalytic activity of the synthesized photocatalysts could be attributed to oxygen vacancy defects caused by Mo substitution by a more electronegative W atom.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Hushan Chand, Ajay Kumar, Subhadip Goswami, Venkata Krishnan
Summary: This study investigates the catalytic activity of graphitic carbon nitride (GCN) derived from different precursors in the CO2 conversion reaction. The results show that GCN derived from urea demonstrates the best catalytic activity and product yield. Exfoliated GCN samples exhibit a moderate decrease in catalytic activity, possibly due to a decrease in terminal amino groups.
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)