Results 41 to 50 of about 2,217 (192)

NOVOS HÍBRIDOS BASEADOS EM OXIHIDRÓXIDO DE FERRO(III) E NANOPARTÍCULAS DE OURO (AuNPs/FeOOH) COMO CATALISADORES PARA A REDUÇÃO DE POLUENTES ORGÂNICOS AMBIENTAIS

Química Nova
A new δ-FeOOH supported nano-Au catalyst was prepared by a facile method using HAuCl4 as the gold source and NaBH4 as the reducing agent. The samples (denoted as AuNPs/FeOOH) were characterized by means of X-ray diffraction (XRD), UV-vis and infrared ...
Camila Kauany da Silva Azevedo, Eduardo Arizono dos Reis, José Carlos Germino, Jéferson Aparecido Moreto, Ailton José Terezo, Fernando Júnior Quites   +5 more
doaj   +1 more source

Nitration Of Phenols Under Mild And Heterogeneous Conditions

Molecules, 2001
Nitrophenols can be obtained in moderate to high yields using a combination of Mg(HSO4)2 or NaHSO4.H2O, NaNO3 and wet SiO2 in dichloromethane at room temperature.
Mohammad Ali Zolfigol, Ezat Ghaemi, Elahe Madrakian   +2 more
doaj   +1 more source

Recent Advances in Sustainable Single‐Atom Catalysts from Biomass and Solid Waste: Design, Synthesis and Applications

Advanced Science, EarlyView.
Biomass‐ and solid waste‐derived sustainable single‐atom catalysts (Sus‐SACs) provide a cost‐effective and renewable approach to catalyst design. This review summarizes precursor selection, including AI‐assisted screening, synthesis strategies with emphasis on ultrafast methods, and advanced characterization techniques.
Hongzhe He, Yuhang Qiu, Ruoqun Zhang, Sasha Yang, Jingwei Wang, Jianglong Yu, Lian Zhang, Ning Chen, Baiqian Dai   +8 more
wiley   +1 more source

S8-mediated decarboxylative cyclization of 2-nitrophenols with arylacetic acid: Synthesis of benzoxazoles

Journal of Saudi Chemical Society, 2019
A concise, metal-free protocol has been established for the preparation of 2-arylbenzoxazoles from 2-nitrophenols and arylacetic acids via a sulfur-mediated redox decarboxylative cyclization reaction.
Haifeng Gan, Dalong Yang
doaj   +1 more source

Programmable Semi‐Interpenetrating Living Materials With Robust Stability for Versatile Bioremediation and Biotherapeutics

Advanced Science, EarlyView.
A semi‐interpenetrating engineered living material (sIHSELM), fabricated via thermosensitive hydroxybutyl chitosan and covalent protein self‐assembly, demonstrates exceptional mechanical properties and environmental stability. Shielding bacteria from harsh conditions, sIHSELM exhibits remarkable efficacy in ulcerative colitis treatment and pollutants ...
Zixian Bao, Shengfeng Yang, Dandan Hu, Jiezheng Liu, Bo Jiang, Xinyue Sui, Qingsheng Qi, Lai Li, Guang Zhao   +8 more
wiley   +1 more source

Prediction of the By-products Formation in the Adiabatic Industrial Benzene Nitration Process

Chemical Engineering Transactions, 2013
Side reactions are undesirable in most industrial processes, as they decrease process yield and selectivity. For this reason, mononitrobenzene’s manufacturers set nitrophenols minimization as a critical goal, along with the MNB production targets.
A. Nogueira, D. Silva, M. Reis, C. Baptista   +3 more
doaj   +1 more source

Comprehensive Studies of Adsorption Equilibrium and Kinetics for Selected Aromatic Organic Compounds on Activated Carbon

Molecules
This work presents a comprehensive analysis of the adsorption of selected aromatic organic compounds on activated carbons. Both the equilibrium and kinetics of adsorption were studied using UV–Vis spectrophotometry.
Małgorzata Wasilewska, Anna Derylo-Marczewska, Adam W. Marczewski   +2 more
doaj   +1 more source

Latest Advancements in Using Fe₃O₄@graphene Oxide Nanocatalyst for the Hydrogenation of Nitroarenes. [PDF]

ChemistryOpen
This review provides a comprehensive summary of recent advances in Fe3O4@graphene oxide magnetic nanocatalysts for the reduction of nitroarenes. The reduction of nitroarenes yields valuable intermediates that serve as key building blocks in the synthesis of agrochemicals and pharmaceuticals.
Payamifar S, Abdouss M, Sarreshtehdar Aslaheh H, Poursattar Marjani A.   +3 more
europepmc   +2 more sources

Micro/nanorobots for detecting and eliminating biological and chemical warfare agents

BMEMat, EarlyView.
Fuel‐powered and field‐driven micro/nanorobots provide a cutting‐edge platform to safeguard national security and defense. This review reports the latest research progress in micro/nanorobots in sensing and detoxifying biological and chemical warfare agents.
Song Li, Huaijuan Zhou, Di Shi, Zdeněk Sofer, Jinhua Li   +4 more
wiley   +1 more source

Vacancy defect‐induced electron homing breaks phosphodiester bonds for RNA depletion‐driven cancer therapy

BMEMat, EarlyView.
Illustration of 5% S‐vacancy Bi2S3 mediated phosphodiester bonds cleavage in RNA of hepatocellular carcinoma cells, which suppressing ERI3 expression, inhibiting cell proliferation and promoting apoptosis. Abstract Genome‐wide hypertranscription is a hallmark of malignant progression.
Chuncheng Yang, Zehao Shen, Guangming Xiang, Zhe Liu, Huaxin Liu, Jiabei Li, Ao Wang, Yelin Wu, Peiran Zhao, Xingwu Jiang, Jinghan Wang, Xiaoqing Jiang, Wenbo Bu   +12 more
wiley   +1 more source