Review
Chemistry, Inorganic & Nuclear
Lindie Marais, Hermanus C. M. Vosloo, Andrew J. Swarts
Summary: Oxidative transformations involve converting organic substrates into oxygenates for pharmaceutical and chemistry industries. The mechanistic pathways of Cu-based catalyst systems include the initial oxidation state of copper, the redox lability of these oxidation states and the nature of the Cu-based active species.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Biotechnology & Applied Microbiology
Bernardo Llamas, Maria C. Suarez-Rodriguez, Cynthia V. Gonzalez-Lopez, Pedro Mora, F. Gabriel Acien
Summary: Techno-economic tool developed for analyzing microalgae production costs and CO2 fixation. Microalgae technology could be competitive in the future, but requires suitable technologies and operational conditions.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biochemistry & Molecular Biology
Clemence Cheignon, Fabrice Collin, Laurent Sabater, Christelle Hureau
Summary: The study investigates the impact of oxidative stress on the assembly properties of the amyloid-beta (Aβ) peptide in Alzheimer's disease. Oxidized Aβ displayed smaller and ill-defined assemblies compared to the non-oxidized counterpart. It was able to slow down the formation of Aβ fibrils and formed weakly-structured aggregates in the presence of copper or zinc ions.
Article
Chemistry, Multidisciplinary
Nicholas L. Reed, Grace A. Lutovsky, Tehshik P. Yoon
Summary: This study demonstrates that Cu(II)-mediated radical-polar crossover enables efficient photocatalytic oxidative heterofunctionalization reactions between bulky alkenes and various nucleophilic partners. It shows that Cu(II) salts are ideal terminal oxidants for photoredox applications, and the combination of photocatalytic substrate activation and Cu(II)-mediated radical oxidation can address challenges in catalytic oxidation chemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Kengo Hanaya, Kaho Yamoto, Kazuaki Taguchi, Kazuaki Matsumoto, Shuhei Higashibayashi, Takeshi Sugai
Summary: The chemical modification of proteins is an effective technique for manipulating protein properties and functions. This paper proposes a simple method using a copper(II)-mediated aldol reaction to selectively modify the N-terminus of peptides and proteins.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Environmental Sciences
Helin Chen, Yanyan Wang, Jie Luo, Min Kang, Jin Hou, Ruoping Tang, Ling Zhao, Fei Shi, Gang Ye, Xiaoli He, Hengmin Cui, Hongrui Guo, Yinglun Li, Huaqiao Tang
Summary: Excessive exposure to nano-copper may induce testicular apoptosis and autophagy through the AKT/mTOR signaling pathway, leading to damage in testicular tissues and spermatogenesis. Nano-copper upregulates apoptosis-related and autophagy-related proteins while downregulating others, affecting sperm quality, fructose content, and sex hormone secretion.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Review
Soil Science
Ning-Jun Jiang, Yi-Jie Wang, Jian Chu, Satoru Kawasaki, Chao-Sheng Tang, Liang Cheng, Yan-Jun Du, Bettadapura S. Shashank, Devendra N. Singh, Xiao-Le Han, Yu-Ze Wang
Summary: Soil is not just made up of inorganic phases, as microorganisms such as bacteria, archaea, and eukaryotes have the ability to alter the properties of soil in geotechnical engineering practices. Among these, microbial-induced calcium carbonate precipitation (MICP) has gained significant attention for improving soil engineering performance. Recent developments in bio-mediated geotechnics focus on popular and alternative MICP processes, innovative raw materials and additives, testing methodologies for characterizing MICP at multi-scale, and applications in emerging and unconventional geotechnical fields.
SOIL USE AND MANAGEMENT
(2022)
Article
Crystallography
Bo Kang, Fusheng Zha, Hongchang Li, Long Xu, Xianguo Sun, Zhitang Lu
Summary: Microbial induced carbonate precipitation (MICP) is a natural bio-mediated process that can be used for soil stabilization and heavy metal immobilization. This study found that the unconfined compressive strength of tailings sand treated with MICP is highest when the concentration of cementation solution (CS) is 1.0 mol/L and the optical density (OD600) is 1.6. The solidification efficiency of heavy metals in tailings sand is also highest under these conditions. Macroscopic and microscopic observations revealed that the mechanism of MICP solidification of tailings involves bacterial outer oxide, hydroxide, alkaline carbonate, and carbonate precipitation.
Article
Chemistry, Multidisciplinary
Porag Bora, Dipika Konwar, Anindita Dewan, Manash R. Das, Utpal Bora
Summary: In this study, direct C-H bond functionalization of cyclic ethers through decarboxylation was achieved using synthesized biogenic CuO nanocatalysts under mild conditions. The method demonstrated a wide substrate scope with high yields and proceeded via a radical mechanism.
NEW JOURNAL OF CHEMISTRY
(2022)
Editorial Material
Chemistry, Multidisciplinary
Nathan W. Dow
Summary: Nathan Dow is a third-year graduate student at Princeton University working in the lab of Prof. David MacMillan. His research focuses on combining photoredox activation with copper catalysis to achieve challenging chemical transformations through open-shell mechanisms.
Article
Engineering, Chemical
Tiago Guimaraes, Elisa Maria Gomes da Silva, Adalin Cezar Moraes de Aguiar, Marcelo Moreira da Costa, Kamila Cabral Mielke, Kassio Ferreira Mendes, Antonio Alberto da Silva, Ana Paula de Carvalho Teixeira, Renata Pereira Lopes Moreira
Summary: In this study, a Fenton-like process using an iron/hydrochar (Hy-Fe) composite synthesized from coffee husk was successfully used to degrade dicamba effluent. The Hy-Fe composite showed high degradation rates and minimal toxicity, and exhibited reusability in multiple degradation cycles, demonstrating its potential as a practical solution for dicamba contamination.
Article
Soil Science
Hang Xu, Peihua Zhang, Erkai He, Willie J. G. M. Peijnenburg, Xinde Cao, Ling Zhao, Xiaoyun Xu, Hao Qiu
Summary: This study discovered a neglected mechanism that mediates Cu mobility and speciation via cysteine mineralization in a paddy soil. The produced sulfide promotes the formation of copper sulfide nanoparticles, constituting an alternative copper sulfide formation mechanism that bypasses sulfate reduction. Our study not only provides initial molecular-level insights into the abundance, diversity, and metabolism of cysteine-mineralizing microorganisms but also highlights their important ecological functions in metal and sulfur biogeochemical cycles.
Review
Cell Biology
Xudong Huang
Summary: Alzheimer's disease (AD) is a pandemic that causes significant social and economic burden, and currently, there is no effective treatment available. Experimental studies have shown that imbalances in cerebral iron and copper levels are related to the neuropathological hallmarks of AD. Targeting iron-dependent cell death, known as ferroptosis, may be a promising therapeutic strategy for AD. Additionally, the role of copper-dependent cell death, known as cuproptosis, in AD neurodegeneration requires further investigation. This concise review aims to stimulate further research in oxidative stress-mediated ferroptosis and cuproptosis in AD.
Article
Chemistry, Applied
Jianyu Dong, Xiuling Chen, Fangyan Ji, Lixin Liu, Lebin Su, Min Mo, Jian-Sheng Tang, Yongbo Zhou
Summary: In the presence of copper salt and molecular oxygen, a simple and direct aerobic oxidative esterification reaction of arylacetonitriles with alcohols/phenols is achieved, resulting in a broad range of aryl carboxylic acid esters in good to high yields. Copper salt plays multiple roles in the transformation, facilitating the oxygenation of C-H bond, cleavage of inert C-C bond, and formation of C-O bond in one pot without the need for any additional acids, bases, ligands, etc. This reaction provides a simple, direct, and efficient method for synthesizing functionalized esters, especially aryl benzoates, from readily available starting materials.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Review
Engineering, Environmental
Thanh Khoa Phung, Thong Le Minh Pham, Khanh B. Vu, Guido Busca
Summary: Propylene production has received attention due to its applications and avoiding oil dependence. Various processes have been developed for propylene production, with a focus on utilizing ZSM-5 for biopropylene production. The physicochemical properties of ZSM-5 as an efficient catalyst and potential parameters for controlling bioethanol dehydration into propylene have been discussed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
