Article
Materials Science, Ceramics
Alberto Z. Fatichi, Mariana G. de Mello, Karina D. Pereira, Luisa G. M. Antonio, Augusto D. Luchessi, Rubens Caram, Alessandra Cremasco
Summary: The electrochemical, structural, and biological properties of self-organized amorphous and anatase/rutile titanium dioxide (TiO2) nanotubes deposited on Ti-35Nb-4Zr alloy through anodization-induced surface modification were investigated. The study found that anatase TiO2 exhibited higher surface corrosion resistance and cell viability compared to amorphous TiO2, indicating the importance of TiO2 nanotube crystallization in the material's electrochemical behavior and biocompatibility.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Xudong Xiong, Zhexian Deng, Cairui Jiang, Chao Xu, Zhao Fan, Yongqian Wang
Summary: In this study, titanium dioxide nanotube arrays (TNAs) were prepared by a one-step anodic oxidation method, and the effects of anodic oxidation conditions on the growth of TNAs were investigated. The results showed that the optimized TNAs exhibited better photocatalytic activity for the degradation of methylene blue (MB) compared to conventional TiO2. Furthermore, the TNAs were modified to have superhydrophobic properties, and the modification did not affect their photocatalytic activity, which suggests the potential for photocatalytic degradation of water pollution with the added benefit of superhydrophobicity.
Article
Materials Science, Coatings & Films
Junling Qin, Zhiguang Cao, Hui Li, Zixue Su
Summary: TiO2 nanotubes with a diameter down to around 6 nm were successfully fabricated in ammonium fluoride-containing ethylene glycol electrolyte through a one-step anodic oxidation method. By systematically studying the influences of various factors, the growth mechanism of TiO2 nanotubes with ultra-small pore diameter and cell size was revealed.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Anna Pawlik, Magdalena Jarosz, Robert P. Socha, Grzegorz D. Sulka
Summary: This study emphasizes the importance of surface topography and chemistry in implantable materials for effective osseointegration and drug interaction. The research focuses on surface modifications of annealed TiO2 samples with -OH groups and silane derivatives, confirming their impact on drug release kinetics. The findings demonstrate that annealing significantly affects release profiles, while further modifications do not alter kinetics. Moreover, changes in surface chemistry enhance hydrophilicity and improve cell adhesion and proliferation, as observed with MG-63 cells.
Article
Materials Science, Coatings & Films
Salih Durdu, Muharrem Sancak, Emine Yalcin, Metin Usta, Eyup Akagunduz, Atilgan Altinkok
Summary: Highly ordered TiO2 nanotube arrays were prepared on Ti6Al4V substrate through anodic oxidation technique, showing good surface roughness and thickness distribution, as well as higher hydrophobicity compared to uncoated titanium surface. The hardness and elastic modulus of TiO2 nanotube surfaces were close to bone structure, with good adhesion properties between similar to 2.2 N and similar to 4.6 N.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Environmental Sciences
Danchen Zhao, Liushan Jiang, Ruochen Yang, Yue Zhang, Qingxiang Zhou
Summary: In this work, researchers modified titanium dioxide nanotube arrays (TiO2 NTAs) with polyaniline (PANI) to enhance the utilization of visible light and accelerate the photocatalytic degradation of a flame retardant. The results showed that the PANI-modified TiO2 NTAs exhibited higher catalytic activity, especially when ethanol was present as a hole scavenger. The modified material demonstrated excellent stability and potential for future practical applications as a photoelectrocatalyst.
Article
Polymer Science
Xuening Fei, Tingyu Yang, Sijia Liu, Baolian Zhang, Hongbin Zhao, Dan Liu, Xinyi Wu, Danyang Xu
Summary: The study used quaternary ammonium chitosan (HACC) with antibacterial properties as the shell material to prepare fragrance microcapsules. The factors affecting the density, encapsulation ratio, and sustained-release of the coated fragrance microcapsules were investigated. The results showed that when the shell material was modified with TiO2 and kh550, the encapsulation ratio increased by 41.5% compared to unmodified microcapsules. The sustained-release time could last up to 29 days, which was 18 days longer than unmodified microcapsules.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Jayaseelan Arun, S. Nachiappan, Goutham Rangarajan, Ram Prasath Alagappan, K. P. Gopinath, Eric Lichtfouse
Summary: This review focuses on the mechanisms, synthesis, and applications of titanium dioxide photocatalysis. Titanium dioxide exhibits high photocatalytic activity and can be used in self-cleaning surfaces, air and water purification systems, microbial inactivation, and selective organic conversion. The synthesis of titanium dioxide nanomaterials is a major challenge, and various methods such as sol-gel, sonochemical, and hydrothermal techniques are used. The applications of titanium dioxide photocatalysis are diverse and include energy production, petroleum recovery, and removal of various pollutants.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Jiangnan Yuan, Shusheng Wei, Zhiheng Ji, Juan Wang
Summary: In this study, a BPN/TDNA composite was prepared as a photoelectrochemical sensing material for detecting Cip. The introduction of BPN improved the electron migration efficiency and separation of photogenerated electron-hole pairs, leading to enhanced photoelectric performance. The current density of BPN/TDNA was linearly proportional to Cip concentration, and the sensor demonstrated stability, reproducibility, and selectivity.
Article
Nanoscience & Nanotechnology
Peng Tang, Xiaopei Li, Chunling Xie, Xiufeng Xiao
Summary: This study constructed highly ordered titanium dioxide nanotube arrays (TNTs) by changing the tissue structure of the titanium substrate, and investigated the influence of the titanium substrate structure on the growth morphology of nanotubes. The results showed that after rolling, there were a large number of dislocations and microscopic internal stresses in the grain structure of the titanium substrate, which improved the corrosion resistance of the materials. The changes in the microstructure of these materials made the nanotube arrays have highly ordered structure and better photoelectrochemical properties, providing a new idea for improving their applications in photoelectrochemistry.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Jinsong Li, Jing Ao, Chongxia Zhong, Tan Yin
Summary: Researchers have developed a TiO2-CNT supercapacitor with high energy density and specific capacitance. The device shows excellent cyclic stability and low leakage current, making it suitable for power supply of portable electronics in the future.
APPLIED SURFACE SCIENCE
(2021)
Article
Polymer Science
Chunlian Liu, Peipei Huang, Wei Wang, Miao Tan, Fangbao Fu, Yunhui Feng
Summary: In this study, composite nanomaterials of TiO2 nanotube arrays (TiO2 NTAs) and polyaniline (PANI) were successfully prepared on titanium sheets using an anodic oxidation electrochemical method. The TiO2 NTA/PANI composite materials exhibited excellent UV photosensitivity and responsiveness, as well as good stability and reproducibility. The p-n heterostructure formed inside the composites hindered the recombination of photogenerated electron-hole pairs and improved their utilization of UV light. This work provides a theoretical basis for the application of metal oxides in UV photodetectors, which is important for the development of UV photodetectors.
Article
Engineering, Chemical
Muxi Zhang, Hongxiang Zhu, Beidou Xi, Yuxin Tian, Xiaojie Sun, Hongxia Zhang, Beibei Wu
Summary: Biochar-amended soil cover (BSC) in landfills can improve methane oxidation, but it may increase rainwater infiltration. Modifying biochar with the silane coupling agent KH-570 enhances its waterproof ability, reducing rainwater entering landfills. Hydrophobic biochar-amended soil cover (HBSC) showed significantly better waterproof performance compared to BSC in simulated precipitation tests.
Article
Nanoscience & Nanotechnology
Patrick Hartwich, Christian Pritzel, Manuela S. Killian
Summary: This study proposes an alternative utilization of titanium dioxide by covering surfaces of cement-based materials with a regular-shaped monolayer of photocatalytically active titanium dioxide nanotube arrays. The study also presents a proposal for the synthesis of TiO2 nanotubes and transferring them onto material surfaces, providing the opportunity for applying the material to precast elements.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Environmental Sciences
Karen Yuanting Tang, James Xiaoyuan Chen, Enrico Daniel R. Legaspi, Cally Owh, Ming Lin, Ice Si Yin Tee, Dan Kai, Xian Jun Loh, Zibiao Li, Michelle D. Regulacio, Enyi Ye
Summary: The Au-embedded TiO2 nanofibers showed superior photocatalytic degradation efficiency for organic dye pollutants, attributed to the plasmon resonance absorption of Au nanoparticles and effective charge separation at the Au-TiO2 hybrid heterojunction.
Article
Chemistry, Physical
Yaocheng Deng, Zhanpeng Zhou, Hao Zeng, Rongdi Tang, Ling Li, Jiajia Wang, Chengyang Feng, Daoxin Gong, Lin Tang, Ying Huang
Summary: In this study, phosphorus and kalium co-doped g-C3N4 with cyano and nitrogen vacancies (PKCN) was prepared via a simple thermal treatment. The prepared PKCN exhibited excellent singlet oxygen generation ability and efficiently degraded atrazine under visible light. Density functional theory calculations revealed the synergistic effect of different active units in efficient singlet oxygen generation. Additionally, the photocatalytic process significantly reduced the toxicity of atrazine.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Biophysics
Xilian Ouyang, Chengyang Feng, Xu Zhu, Yibo Liao, Zheping Zhou, Xinya Fan, Ziling Zhang, Li Chen, Lin Tang
Summary: A portable 3D printed bionic sensing device with enhanced photoelectric response was fabricated for sensitive detection of Bisphenol A (BPA). The device utilized a dual-electrode system and a fern-shaped nitrogen doped BiVO4 photoanode to generate electrical output and provide the sensing signal. Integrated into a micromodel based on micro-nano 3D printing technology, the device achieved automatic sample injection and detection, paving a new way for the development of portable and on-site sensing devices.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Engineering, Environmental
Rongdi Tang, Hao Zeng, Daoxin Gong, Yaocheng Deng, Sheng Xiong, Ling Li, Zhanpeng Zhou, Jiajia Wang, Chengyang Feng, Lin Tang
Summary: In this study, triazole and pyromellitic diimide were used to modify polymeric carbon nitride (PCN) and fabricate TA-CN-PDI, a catalyst that promotes the photodegradation of atrazine. The vesicular morphology and the donor-pi-acceptor electronic structure synergistically enhance the photoactivity of the catalyst.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Binbin Shao, Leyuan Shen, Zhifeng Liu, Lin Tang, Xiaofei Tan, Dongbo Wang, Weimin Zeng, Ting Wu, Yuan Pan, Xiansheng Zhang, Lin Ge, Miao He
Summary: This review discusses the formation of disinfection byproducts (DBPs) from emerging organic micropollutants (EOMPs) during chlorine-based disinfection processes (Cl-DPs). The typical Cl-DPs and their mechanisms are introduced, and the formation pathways, mechanisms, and influencing factors of DBPs in the presence of different EOMPs are discussed. The review also summarizes and discusses the detection and control methods of DBPs, and proposes future research directions and challenges in controlling their formation during disinfection processes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Mingjuan Zhang, Lin Tang, Abing Duan, Yi Zhang, Fengjiao Xiao, Yuan Zhu, Jiajia Wang, Chengyang Feng, Nian Yin
Summary: This study investigates the adjustment of charge kinetics in semiconductors using the integration of LSPR effect with homojunction. A novel composite material is designed for this purpose. The results indicate the potential application value of this approach in adjusting charge kinetics and enhance the understanding of thermodynamic reactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Cui Lai, Mengyi Xu, Fuhang Xu, Bisheng Li, Dengsheng Ma, Yixia Li, Ling Li, Mingming Zhang, Danlian Huang, Lin Tang, Shiyu Liu, Huchuan Yan, Xuerong Zhou, Yukui Fu, Huan Yi
Summary: The production of hydrogen peroxide using solar energy is important for the chemical industry and environmental remediation. Researchers have successfully designed an S-scheme heterojunction photocatalyst with promoted charge separation and migration, achieving outstanding hydrogen peroxide production rate without sacrificial agents and additional oxygen. Experimental and theoretical studies suggest that the S-scheme heterojunction between CdS and KTO plays a crucial role in efficiently separating photogenerated electron-hole pairs, providing insights for the charge transfer mechanism and offering an innovative strategy for green, energy-saving, and sustainable hydrogen peroxide production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xilian Ouyang, Chengyang Feng, Xu Zhu, Yibo Liao, Xinya Fan, Zheping Zhou, Ziling Zhang, Lin Tang
Summary: Ciprofloxacin (CIP) is a widely used antibiotic that can enter the water environment and food chain, causing serious harm to human health and the ecological environment. This study presents a self-powered sensing device based on a photoelectrochemical system and 3D printing technology, which can detect CIP efficiently without an external power source.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Correction
Ecology
Xiang Tang, Linrui Zhong, Lin Tang, Changzheng Fan, Baowei Zhang, Mier Wang, Haoran Dong, Chengyun Zhou, Christopher Rensing, Shungui Zhou, Guangming Zeng
Article
Green & Sustainable Science & Technology
Hui Chen, Tao Cai, Wanyue Dong, Jiajia Wang, Yutang Liu, Wenlu Li, Xinxian Xia, Lin Tang
Summary: Excessive use of tetracycline in livestock farming has caused serious pollution. A new method proposed the catalytic thermal degradation of tetracycline using iron-based metal-organic frameworks (MOFs) and studied the mechanism. The annealing derivatives of three Fe-based MOFs showed better degradation performance than the raw materials due to the exposure of Fe-O clusters and the formation of oxygen vacancies. The optimum sample exhibited a degradation efficiency of 94.22% for tetracycline within 60 minutes at 70 degrees C.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Yuyang Yi, Haopeng Feng, Jiajia Wang, Jing Tang, Yangfeng Wu, Xiangmin Liang, Yuyao Guo, Lin Tang
Summary: In this study, a novel electrodialysis system with a self-growing titanium dioxide nanowire (TiO2 NW) electrode is proposed to recover NH3-N and remove heavy metals from manganese residue leachate (MRL), which can seriously affect the environment. Plant growth experiments and ecotoxicity studies are conducted to evaluate the ecological risks of the reuse of recovered NH3-N. The results show that the electrodialysis system can achieve high removal rates of heavy metals and recovery of NH3-N from MRL, and the recovered NH3-N can promote plant growth and optimize soil fertility.
Article
Multidisciplinary Sciences
Chencheng Qin, Yi Yang, Xiaodong Wu, Long Chen, Zhaoli Liu, Lin Tang, Lai Lyu, Danlian Huang, Dongbo Wang, Chang Zhang, Xingzhong Yuan, Wen Liu, Hou Wang
Summary: The pre-designable structure and unique architectures of covalent organic frameworks (COFs) make them attractive as active and porous medium for water crisis. However, the regulation of interfacial behavior in advanced oxidation decontamination using functional basis with different metrics remains challenging. In this study, different molecular interfaces were pre-designed and fabricated to achieve high removal rates for micropollutants by breaking through the adsorption energy barrier and promoting inner-surface renewal.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Lifei Deng, Yu Chen, Jiangfang Yu, Jie Yuan, Qili Peng, Yuyang Yi, Nile Wu, Lin Tang
Summary: Harmful algal blooms have become a global environmental problem. The synthesis of a novel floatable 3D sponge@SBC composite using biochar has shown excellent mechanical stability and catalytic performance in controlling algal blooms. The material also exhibits good repeatability in removing algae.
Review
Environmental Sciences
Wenjing Chen, Danlian Huang, Cui Lai, Yukui Fu, Wenfang Chen, Haoyang Ye, Huan Yi, Bisheng Li, Ling Li, Fanzhi Qin, Hong Qin, Lei Qin
Summary: Advanced oxidation processes (AOPs), especially the heterogeneous electro-Fenton (EF) process, have been widely used for surface and groundwater pollution control. EF process has shown high catalytic performance, no generation of iron sludge, and good recyclability of catalyst. This review focuses on the current studies and applications of heterogeneous catalysts in EF process, with emphasis on the period from 2012 to 2022. The review covers two typical heterogeneous EF systems (solid catalysts and functionalized cathode catalysts) and their applications in organic contaminants degradation in water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Cheng Huang, Fanzhi Qin, Chen Zhang, Danlian Huang, Lin Tang, Biao Song, Ming Yan, Wenjun Wang, Deyu Qin, Yin Zhou, Hanzhuo Luo, Guoge Fang
Summary: Metal components have significant impacts on the generation of persistent free radicals (PFRs) in biochar. This study investigates the effect of interactions among metal components on the formation of PFRs during biomass pyrolysis. The results show that the coupling of Fe with Co and Ni increases the abundance of PFRs in iron-containing biochars (IBCs), while Zn inhibits PFRs generation. Persulfate activation experiments confirm that PFRs are critical redox sites. NiFeO/BC is identified as a more efficient catalyst for PFRs activation. This study provides new methods for regulating PFRs in biochar and advances the understanding of metal-containing biomass pyrolysis processes.
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)