Article
Biochemistry & Molecular Biology
Mateusz Molon, Dominika Szlachcikowska, Karolina Stepien, Patrycja Kielar, Sabina Galiniak
Summary: TEMPO is a compound used in the chemical industry for synthesis of organic compounds and as an electrode in allorganic radical batteries. It is also a widely used antioxidant in scientific studies. This study found that TEMPO inhibits cell growth rate and slows down aging in yeast cells. TEMPO also reduces DNA double-strand breaks and exhibits genoprotective effects.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
(2023)
Article
Engineering, Environmental
Ding Lu, Chunjian Xu, Yan Wang, Wangfeng Cai
Summary: Redox flow desalination using NaSO4-TEMPO shows high salt removal rate and charge efficiency at high operating voltages. The concentration of NaSO4-TEMPO and the concentration of NaCl both affect the desalination performance. The study aims to develop a safe and low-cost total-organic redox desalination system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Paper & Wood
Yuan Zhong, Xueyi Gao, Wanqi Zhang, Xue Wang, Kebing Wang
Summary: In this study, cellulose nanocrystals were prepared from Salix psammophila and carboxyl functional groups were introduced by oxidation. Microscopy observation revealed that the nanocrystals exhibited short rod-like fibers. XPS analysis confirmed the presence of carboxyl groups in the nanocrystals.
Article
Chemistry, Organic
Junqing Gao, Xinjun Weng, Cong Ma, Xuetao Xu, Ping Fang, Tiansheng Mei
Summary: A metal-free electrochemical oxidation cyanation and phosphonylation reaction has been developed, utilizing TEMPO to reduce substrate potential and prevent over-oxidation of some electron-rich aromatic amines. The protocol shows good functional group compatibility, making it a practical and efficient method to synthesize alpha-aminonitriles and alpha-amino phosphonates under mild conditions. Preliminary studies suggest the product formation is through Shono oxidation of imine species.
CHINESE JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Babak Karimi, Bahareh Ghaffari, Hojatollah Vali
Summary: The study successfully prepared a highly water-dispersible/magnetically separable multi-functional catalyst system by incorporating TEMPO and an imidazolium bromide bearing TEG groups into the Fe3O4@SiO2 core-shell structure. The catalyst showed excellent performance in alcohol oxidation with strong synergistic effect between functionalized components, dual-adjustable selectivity, and recyclability through a double-separation strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
P. Rybochkin, O. A. Kamanina, E. A. Lantsova, V. A. Arlyapov, E. A. Saverina
Summary: In this study, a heterogeneous biocatalyst was prepared by immobilizing yeast and bacteria cells onto an organosilica material using the sol-gel method. The results showed that a heterogeneous biocatalyst composed of 50 vol.% MTES and 50 vol.% TEOS exhibited the highest catalytic efficiency. A BOD biosensor was also developed using the heterogeneous biocatalyst as a bioreceptor element, which provided consistent data with the certified method for determining BOD.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Anna Wolny, Anna Chrobok
Summary: Supported ionic liquid phases offer several advantages in catalysis, providing catalytic activity or efficient matrix and improving mass transport. Silica-based materials, due to their cost-efficiency and specific properties, are widely used in this field.
Article
Pharmacology & Pharmacy
Yu Yi, Jianming Hu, Shenwei Ding, Jianfeng Mei, Xudong Wang, Yanlu Zhang, Jianshu Chen, Guoqing Ying
Summary: A feasible strategy for directing protein immobilization on silica magnetic beads for ligand fishing based on SpyTag/SpyCatcher (ST/SC)-mediated anchoring is presented. This method allows for the preparation of diverse protein-functionalized SMBs for drug screening and target finding.
JOURNAL OF PHARMACEUTICAL ANALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Muhammad Iqbal Hidayat, Muhammad Adlim, Suhartono Suhartono, Zinatul Hayati, Noor Hana Hanif Abu Bakar
Summary: Airborne disease transmission is a major public health concern, making the development of antimicrobial air filters crucial. This study focused on the environmentally friendly preparation of synthetic zinc oxide nanoparticles (ZnOnano-synth) and their immobilization on chitosan-coated silica gel beads. The immobilized ZnO exhibited high antibacterial properties and showed better characteristics than commercial ZnO nanoparticles in terms of size and antibacterial efficacy.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Iqbal Hidayat, Muhammad Adlim, Ilham Maulana, Suhartono Suhartono, Zinatul Hayati, Noor Hana Hanif Abu Bakar
Summary: This study successfully demonstrated the green synthesis and immobilization of colloidal silver nanoparticles on a solid support for reusable air filters with high antibacterial properties. The immobilized silver particles showed stable and dispersed nano-size features that effectively prevented the growth of bacteria, making the air filters highly effective against Bacillus subtilis.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xiaqun Guo, Meichao Li, Jianli Wang, Chunmei Li, Xinquan Hu, Liqun Jin, Nan Sun, Baoxiang Hu, Zhenlu Shen
Summary: A highly promising heterogeneous strategy for the selective oxidation of alcohols to carbonyl compounds using immobilized 1-methyl-2-azaadamanane N-oxyl radicals on magnetic polystyrene nanospheres (1-Me-AZADO/MPNs) is described. The reaction offers a greener and more convenient method for the synthesis of carbonyl compounds with high selectivity and isolated yields of 73-99%. The attractive features of convenient magnetic separation, good recyclability, and fast reaction rates make this method very efficient.
Article
Engineering, Chemical
Ekaterina A. Eseva, Maksim O. Lukashov, Kirill A. Cherednichenko, Ivan S. Levin, Argam Akopyan
Summary: The study focused on the synthesis and characterization of new efficient heterogeneous catalysts based on various immobilization methods, with the most effective method being the use of N-methylimidazole as a cation-forming agent.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Tuyen-Nguyen Van, Trung-Do Quang, Thuan-Tran Hung, Quang-Chu Xuan, Tuan-Hoang Van, Hyungu Kim, Daehee Ahn
Summary: This study used graphene oxide (GO) as a nanofiller to reinforce polyvinyl alcohol/sodium alginate (PVA/SA) gel beads immobilizing aerobic sludge. Different concentrations of GO (0.02, 0.2, 2, 20, and 200 mg/L) were used to make different types of beads. The effect of GO on beads structure was evaluated by comparing the mechanical properties and removal efficiencies of chemical oxygen demand (COD) and NH4+-N. The results showed that the PVA/SA/GO gel carriers exhibited excellent reinforcement properties and higher COD and NH4+-N removal efficiencies compared to non-GO gel carriers.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Instruments & Instrumentation
Shunsuke Kezuka, Haruna Nakayama, Yuko Morita, Hiroaki Sakamoto, Takeo Kitamura, Masayuki Hashimoto, Eiichiro Takamura, Shin-ichiro Suye
Summary: In recent years, the global expansion of infectious diseases caused by drug-resistant bacteria has become a concern. To address this issue, a simple colorimetric biosensor was developed in this study for the rapid detection of drug-resistant MRSA. The biosensor utilized a Ca2+-cross-linked TOCN filter to separate target DNA and probe-modified AuNPs. The sensor was able to quantify target DNA without the need for PCR amplification and could distinguish between MRSA and SA in just 1 minute.
SENSORS AND MATERIALS
(2022)
Article
Chemistry, Physical
Shan Li, Jianing Zhang, Shaoqi Chen, Xuebing Ma
Summary: In this study, quasi-homogeneous organocatalysis was achieved by anchoring BINOL-derived phosphoric acid to a polystyrene brush, resulting in improved yields and enantioselectivities.
JOURNAL OF CATALYSIS
(2022)
