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You searched for: Subject term alcohols Remove constraint Subject term: alcohols Subject term irradiation Remove constraint Subject term: irradiation
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1. Imidacloprid-loaded Mesoporous Silica Nanoparticles Simultaneously Coated with Tridecyl Alcohol and Polydopamine for NIR-Triggered Delivery on Aphis craccivora Koch

Author:
Sheng Yu; Weijie Xu; Wenjun Xiao; Shengke Li; Aihua Zou
Source:
Colloids and surfaces 2022 pp. 112882
ISSN:
0927-7765
Subject:
Aphis craccivora; alcohols; drugs; encapsulation; imidacloprid; insecticidal properties; irradiation; nanocomposites; nanoparticles; phase transition; porous media; silica; temperature; thermal stability
Abstract:
... The stimuli-responsive degradation of coating layer on pesticide-loaded mesoporous silica nanoparticles (MSNs) can realize on-demand release of pesticides. Herein, we report the simultaneously coating of imidacloprid (IMI)-loaded MSNs with phase change materials (PCMs) and polydopamine (PDA) to realize NIR-triggered release of IMI. To balance good thermal stability and sensitive thermal responsive ...
DOI:
10.1016/j.colsurfb.2022.112882

2. Mechanochemically designed bismuth-based halide perovskites for efficient photocatalytic oxidation of vanillyl alcohol

Author:
José Estrada-Pomares; Susana Ramos-Terrón; Guillermo Lasarte-Aragonés; Rafael Lucena; Soledad Cárdenas; Daily Rodríguez-Padrón; Rafael Luque; Gustavo de Miguel
Source:
Journal of materials chemistry A 2022 v.10 no.20 pp. 11298-11305
ISSN:
2050-7496
Subject:
X-ray diffraction; absorption; alcohols; bismuth; carbon dioxide; electron microscopy; electron paramagnetic resonance spectroscopy; fluorescent dyes; irradiation; lighting; mechanochemistry; oxidation; photocatalysis; photocatalysts; photoluminescence; superoxide anion; toxicity; vanillin
Abstract:
... Halide perovskite materials (HPMs) have been recently employed as photocatalysts in H₂ generation, CO₂ reduction and organic synthesis. However, the high toxicity of lead is directing research towards Pb-free halide perovskites with bismuth as the main candidate to replace Pb. This contribution discloses the synthesis of two bismuth-based halide perovskites with chemical compositions Cs₂AgBiBr₆ an ...
DOI:
10.1039/d1ta10323g

3. Non -covalent LDH/MOF composite formation: a new approach in sustainability for solvent-dependent photocatalytic aerobic alcohol oxidation

Author:
Reza Ghahremani Gavinehroudi; Alireza Mahjoub; Meghdad Karimi; Samira Sadeghi; Akbar Heydari; Haleh Mohebali; Shahriar Ghamami
Source:
Green chemistry 2022 v.24 no.18 pp. 6965-6979
ISSN:
1463-9270
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; alcohols; coordination polymers; energy-dispersive X-ray analysis; green chemistry; irradiation; light; nanocomposites; nanosheets; nitrogen; oxidation; photocatalysis; photocatalysts; porous media; reflectance; sorption; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... An Feᴵᴵᴵ-based metal–organic framework denoted as MIL-100(Fe) coated with cobalt–aluminium layered double hydroxide (CoAl-LDH) nanoplates has been synthesized. The structural information was obtained through powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), nitrogen sorption (BET and BJH), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM) and ass ...
DOI:
10.1039/d2gc00208f

4. Non-heme manganese(ii) complex-catalysed oxidative cleavage of 1,2-diols via alcohol-assisted O₂ activation

Author:
Zhiliang Huang; Renpeng Guan; Elliot L. Bennett; Jianliang Xiao
Source:
Green chemistry 2022 v.24 no.9 pp. 3814-3823
ISSN:
1463-9270
Subject:
alcohols; blue light; catalytic activity; green chemistry; heterocyclic compounds; irradiation; manganese; oxidation
Abstract:
... Bio-inspired oxidation strategies are gaining increasing interest in the synthesis of fine and commodity chemicals. In particular, the development of catalytic oxidation systems with bio-relevant metal complexes capable of activating molecular oxygen (O₂) is of utmost interest. In this work, a well-defined non-heme Mn(ii) complex is found to catalyse, under the irradiation of blue light, the effic ...
DOI:
10.1039/d2gc00460g

5. One-pot synthesis of UV-protective carbon nanodots from sea cauliflower (Leathesia difformis)

Author:
Kyung Woo Kim; Yong Min Kwon; Sun Young Kim; Jaoon Young Hwan Kim
Source:
Electronic Journal of Biotechnology 2022 v.56 pp. 22-30
ISSN:
0717-3458
Subject:
Leathesia; alcohols; aquatic organisms; aqueous solutions; biotechnology; carbon; cauliflower; composite films; erythema; irradiation; photoaging; photobleaching; polymerization; rhodamines; skin neoplasms; sunburn; synthesis; toxicity; transmittance
Abstract:
... The interest in ultraviolet (UV) radiation from the sun and artificial sources has been recently increasing due to its toxic effects, including sunburn, erythema, photodamage, and photocarcinogenesis. In this study, we aimed to develop a valuable nanomaterial that can block total UV rays using an undervalued, yet profitable marine organism. We successfully developed carbon nanodots (CNDs) and a CN ...
DOI:
10.1016/j.ejbt.2021.12.004

6. Radiation synthesis and in vitro evaluation of the antimicrobial property of functionalized nanopolymer-based poly (propargyl alcohol) against multidrug-resistance microbes

Author:
Mohamed Mohamady Ghobashy; Yasser S. Soliman; Mahmoud A.W. Soliman; Gharieb S. El-Sayyad; Atef A. Abdel-Fattah
Source:
Microbial pathogenesis 2022 v.172 pp. 105777
ISSN:
0882-4010
Subject:
Candida albicans; Escherichia coli; Staphylococcus aureus; alcohols; antibodies; antimicrobial properties; bacterial proteins; chloroform; dimethylformamide; gamma radiation; irradiation; minimum inhibitory concentration; multiple drug resistance; nanoparticles; pathogenesis; people; polymers; solvents
Abstract:
... Pathogenic microorganisms are responsible for many diseases in biological organisms, including humans. Many of these infections thrive in hospitals, where people are treated with medicines and certain bacteria resist those treatments. Consequently, this research article aims to develop efficient antimicrobial material-based conjugated and functionalized polypropargyl alcohol nanoparticles (nano-PG ...
DOI:
10.1016/j.micpath.2022.105777

7. Acid-Resistant BiVO₄ Photoanodes: Insolubility Control by Solvents and Weak W Diffusion in the Lattice

Author:
Tomohiko Nakajima; Yugo Miseki; Hiroyuki Tateno; Tetsuo Tsuchiya; Kazuhiro Sayama
Source:
ACS applied materials & interfaces 2021 v.13 no.10 pp. 12079-12090
ISSN:
1944-8252
Subject:
acetone; acid tolerance; alcohols; heat treatment; irradiation; lighting; solubility; solvents; sulfuric acid
Abstract:
... We have revealed for the first time that BiVO₄ photoanodes can be used even in strong acid media by mixing organic solvents into the electrolyte and depositing multilayers with a WO₃ bottom layer. In general, the BiVO₄ photoanodes are photocorrosive, especially in acid solutions. However, this shortcoming has been overcome using a combination of the two aforementioned modifications. We deduced tha ...
DOI:
10.1021/acsami.1c00458

8. Efficient aerobic oxidation of alcohols to esters by acidified carbon nitride photocatalysts

Author:
Chong Wang; Qiang Wan; Jiajia Cheng; Sen Lin; Aleksandr Savateev; Markus Antonietti; Xinchen Wang
Source:
Journal of catalysis 2021 v.393 pp. 116-125
ISSN:
0021-9517
Subject:
adsorption; alcohols; aldehydes; ambient temperature; carbon nitride; esterification; esters; exhibitions; flow; irradiation; light; oxidation; photocatalysis; photocatalysts; protonation; synthesis
Abstract:
... Photocatalytic aerobic oxidation of alcohols for the direct synthesis of esters has received significant attention in recent years, but the relatively low efficiency and selectivity under visible light irradiation is the main challenge for their practical applications. Here, surface acidic sites were imparted onto metal-free heterogeneous photocatalysts by the protonation of carbon nitride (HMCN) ...
DOI:
10.1016/j.jcat.2020.11.021

9. Elaboration of Fe3O4/ZnO nanocomposite with highly performance photocatalytic activity for degradation methylene blue under visible light irradiation

Author:
Rania Elshypany; Hanaa Selim; K. Zakaria; Ahmed H. Moustafa; Sadeek A. Sadeek; S.I. Sharaa; Patrice Raynaud; Amr A. Nada
Source:
Environmental technology & innovation 2021 v.23 pp. 101710
ISSN:
2352-1864
Subject:
EDTA (chelating agent); Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; absorption; alcohols; aqueous solutions; benzoquinones; environmental technology; irradiation; magnetism; magnetite; methylene blue; nanocomposites; pH; photocatalysis; photocatalysts; photoluminescence; photolysis; reflectance; transmission electron microscopes; zinc oxide
Abstract:
... The magnetite/zinc oxide (Fe₃O₄/ZnO) nanocomposites were synthesized by the solid-state method using different ratios of zinc oxide and iron oxide. The structural, morphological, and optical properties of nanocomposites were analysed by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), Raman spectroscopy, transmission electron microscope (TEM), UV–Vis diffuse reflectance spectra ...
DOI:
10.1016/j.eti.2021.101710

10. Fundamental Flaw in the Current Construction of the TiO₂ Electron Transport Layer of Perovskite Solar Cells and Its Elimination

Author:
Yan Yan; Cheng Liu; Yi Yang; Guoxiang Hu; Vandana Tiwari; De-en Jiang; Wei Peng; Ajay Jha; Hong-Guang Duan; Friedjof Tellkamp; Yong Ding; Weidong Shi; Shouqi Yuan; Dwayne Miller; Wanhong Ma; Jincai Zhao
Source:
ACS applied materials & interfaces 2021 v.13 no.33 pp. 39371-39378
ISSN:
1944-8252
Subject:
alcohols; deprotonation; electron transfer; irradiation; nanocrystals; photostability; sodium; solvents
Abstract:
... The top-performing perovskite solar cells (efficiency > 20%) generally rely on the use of a nanocrystal TiO₂ electron transport layer (ETL). However, the efficacies and stability of the current stereotypically prepared TiO₂ ETLs employing commercially available TiO₂ nanocrystal paste are far from their maximum values. As revealed herein, the long-hidden reason for this discrepancy is that acidic p ...
DOI:
10.1021/acsami.1c09742

11. Green synthesis of sulfur‐doped g‐C3N4 nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential

Author:
Yicheng Dou; Xingyu Shen; Jinte Zou; Runzhe Shi; Tingting Yan; Qiya Sun; Lin Wang
Source:
Journal of chemical technology and biotechnology 2021 v.96 no.6 pp. 1580-1592
ISSN:
0268-2575
Subject:
N-nitrosodimethylamine; alcohols; biotechnology; demethylation; electron paramagnetic resonance spectroscopy; irradiation; light; models; nanosheets; oxidation; oxytetracycline; pH; thiourea
Abstract:
... BACKGROUND: In this study, sulfur‐doped g‐C₃N₄ (SCN) nanosheets were synthesized using thiourea as a precursor, and then used to catalyze the degradation of oxytetracycline (OTC) under visible‐light irradiation. OTC was chosen as target contaminant because of it being an important precursor of N‐nitrosodimethylamine (NDMA). RESULTS: The removal of OTC was influenced by its initial concentration, i ...
DOI:
10.1002/jctb.6674

12. Insights into the Photodegradation of the Contact Allergen Fragrance Cinnamyl Alcohol: Kinetics, Mechanism, and Toxicity

Author:
Junji Wu; Yanpeng Gao; Teng Guo; Na Luo; Guiying Li; Taicheng An
Source:
Environmental toxicology and chemistry 2021 v.40 no.10 pp. 2705-2714
ISSN:
0730-7268
Subject:
alcohols; allergens; benzaldehyde; bioluminescence; cinnamic acid; death; ecotoxicology; evolution; gas chromatography-mass spectrometry; irradiation; odors; photolysis; prediction; skin irritation; toluene; ultraviolet radiation
Abstract:
... Fragrances can cause general health issues, and special concerns exist surrounding the issue of skin safety. Cinnamyl alcohol (CAL) is a frequent fragrance contact allergen that has various toxic effects on indiscriminate animals. In the present study, the photodegradation transformation mechanism of CAL and toxicity evolution during this process were examined. The results showed that CAL (50 μM) ...
DOI:
10.1002/etc.5156

13. Metal-free photocatalytic aerobic oxidation of biomass-based furfural derivatives to prepare γ-butyrolactone

Author:
Rui Zhu; Gongyu Zhou; Jia-nan Teng; Wanying Liang; Xinglong Li; Yao Fu
Source:
Green chemistry 2021 v.23 no.4 pp. 1758-1765
ISSN:
1463-9270
Subject:
alcohols; ambient temperature; biomass; carbon nitride; cleavage (chemistry); density functional theory; furfural; graphene; green chemistry; irradiation; light; oxidants; oxidation; oxygen; photocatalysis; photocatalysts; porous media; reaction mechanisms; semiconductors
Abstract:
... Efficient catalytic oxidative C–C bond cleavage with dioxygen is useful and challenging to prepare oxygenated fine chemicals from biomass. Herein, we report a catalytic strategy for the preparation of γ-butyrolactone (GBL) by photocatalytic oxidation of tetrahydrofurfuryl alcohol (THFA), tetrahydrofurfuric acid (THFCA), or other furfural derivatives at room temperature under visible-light irradiat ...
DOI:
10.1039/d0gc04234j

14. Multifunctional oxygen vacancies in WO3–x for catalytic alkylation of C–H by alcohols under red-light

Author:
Pengqi Zhu; Xichen Sun; Yunwei Wang; Jin Zhang; Xianmo Gu; Zhanfeng Zheng
Source:
Journal of catalysis 2021 v.402 pp. 208-217
ISSN:
0021-9517
Subject:
absorption; adsorption; alcohols; alkylation; aromatic hydrocarbons; energy; irradiation; oxygen; photocatalysis; photocatalysts; reaction kinetics; red light; tungsten
Abstract:
... Surface reaction kinetics and light absorption properties of a photocatalyst are essential demands for efficiently solar to chemical energy converting. In this study, plasmonic WO₃–ₓ was firstly applied to photocatalytic alkylation of arenes under red light irradiation. The oxygen vacancies, both on the surface and in the bulk of WO₃–ₓ, allow abundant free electrons to increase carrier densities a ...
DOI:
10.1016/j.jcat.2021.08.040

15. Photochemical degradation kinetics and mechanisms of norfloxacin and oxytetracycline

Author:
Honghai Xue; Ming Li; Binshuo Liu; Qingling Meng
Source:
Environmental science and pollution research international 2021 v.28 no.7 pp. 8258-8265
ISSN:
0944-1344
Subject:
alcohols; hydroxylation; irradiation; mineralization; norfloxacin; oxidation; oxytetracycline; photolysis; pollution; research
Abstract:
... The photochemical degradation of norfloxacin (NOR) and oxytetracycline (OTC) was investigated under ultraviolet (UV) irradiation. The results indicated that both NOR and OTC can be degraded, whereas the reaction rates decreased with increasing concentration of NOR and OTC. The degradation rates of NOR and OTC (5 μM) were 0.0256 min⁻¹ and 0.0140 min⁻¹. Acidic conditions inhibited the degradation of ...
DOI:
10.1007/s11356-020-11181-5

16. Rapid, Metal-Free, Catalytic Conversion of Glycerol to Allyl Monomers and Polymers

Author:
Yanet Rodriguez Herrero; Aman Ullah
Source:
ACS sustainable chemistry & engineering 2021 v.9 no.28 pp. 9474-9485
ISSN:
2168-0485
Subject:
allyl alcohol; biodiesel; byproducts; energy; experimental design; formates; formic acid; gel chromatography; glycerol; green chemistry; irradiation; nuclear magnetic resonance spectroscopy; phthalates; temperature; thermogravimetry
Abstract:
... With expanding biodiesel and oleochemical industries, glycerol is produced as main co/byproduct. The expansion of glycerol applications is of foremost importance especially selective conversion methods using low energy consumption, shorter times, and high yield are of great interest. Here, we report the rapid and selective conversion of glycerol to allyl alcohol in a single step using microwave (M ...
DOI:
10.1021/acssuschemeng.1c03134

17. A Soft Evaporation and Ionization Technique for Mass Spectrometric Analysis and Bio-Imaging of Metal Ions in Plants Based on Metal–Iodide Cluster Ionization

Author:
Yinghua Qi; Xiaojie Yang; Shanshan Jia; Baojie Shen; Jiaxing Zhao; Yuchen Wan; Hongying Zhong
Source:
Analytical chemistry 2021 v.93 no.47 pp. 15597-15606
ISSN:
1520-6882
Subject:
alcohols; analytical chemistry; atomic absorption spectrometry; atomization; bioimaging; chemical bonding; deprotonation; desorption; evaporation; iodides; iodine; irradiation; isotopes; mass spectrometry; oxidation; protonation
Abstract:
... Protonation/deprotonation is the well-recognized mass spectrometric mechanism in matrix-assisted laser desorption ionization of organic molecules but not for metal ions with different oxidation states. We describe herein a soft evaporation and ionization technique for metal ions based on iodination/de-iodination in metal–iodide cluster ionization (MICI). It is not only able to determine identities ...
DOI:
10.1021/acs.analchem.1c01872

18. Aqueous solution photocatalytic synthesis of p-anisaldehyde by using graphite-like carbon nitride photocatalysts obtained via the hard-templating route

Author:
Raquel A. Fernandes; Maria J. Sampaio; Joaquim L. Faria; Cláudia G. Silva
Source:
RSC advances 2020 v.10 no.33 pp. 19431-19442
ISSN:
2046-2069
Subject:
X-ray photoelectron spectroscopy; absorption; air; alcohols; aqueous solutions; carbon nitride; dicyandiamide; free radicals; irradiation; nitrogen; photocatalysis; photocatalysts; porous media; redox reactions; scanning electron microscopy; silica; superoxide anion; surface area
Abstract:
... Graphite-like carbon nitride (GCN)-based materials were developed via the hard-templating route, using dicyandiamide as the GCN precursor and silica templates. That resulted in urchin-like GCN (GCN-UL), 3D ordered macroporous GCN (GCN-OM) and mesoporous GCN (GCN-MP). The introduction of silica templates during GCN synthesis produced physical defects on its surface, as confirmed by SEM analysis, in ...
DOI:
10.1039/d0ra02746d

19. Catalytic Acceptorless Dehydrogenation of Aliphatic Alcohols

Author:
Hiromu Fuse; Harunobu Mitsunuma; Motomu Kanai
Source:
Journal of the American Chemical Society 2020 v.142 no.9 pp. 4493-4499
ISSN:
1520-5126
Subject:
alcohols; aldehydes; ambient temperature; catalytic activity; dehydrogenation; esterification; hydrogen; irradiation; ketones; light; nickel; organocatalysts; redox reactions; thiophosphate
Abstract:
... We developed the first acceptorless dehydrogenation of aliphatic secondary alcohols to ketones under visible light irradiation at room temperature by devising a ternary hybrid catalyst system comprising a photoredox catalyst, a thiophosphate organocatalyst, and a nickel catalyst. The reaction proceeded through three main steps: hydrogen atom transfer from the α-C–H bond of an alcohol substrate to ...
DOI:
10.1021/jacs.0c00123

20. Degradation of pullulan irradiated in hydro-methanolic blends: Influence of cinnamyl alcohol at low absorbed dose of radiation

Author:
Dhriti Khandal; Xavier Coqueret
Source:
Carbohydrate polymers 2020 v.248 pp. 116808
ISSN:
0144-8617
Subject:
absorbed dose; alcohols; cleavage (chemistry); crosslinking; electron transfer; energy; evolution; irradiation; molecular weight; pullulan; refractive index
Abstract:
... This study reports on the effects of electron beam radiation on pullulan in both the dry state and hydro-methanolic blends containing cinnamyl alcohol (CA). The radiation chemical yields of scission (G(S)) and crosslinking (G(X)) were determined using Saito’s formalism applied to the evolution of molecular weight (MW) with increasing absorbed dose of radiation. To satisfy the requirements of the s ...
DOI:
10.1016/j.carbpol.2020.116808