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You searched for: Journal name RSC advances Remove constraint Journal name: RSC advances Publication year rev 7978-2022 Remove constraint Publication year rev: 7978-2022 Source 2022 v.12 no.15 Remove constraint Source: 2022 v.12 no.15
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1. 2,7-Diazapyrenes: a brief review on synthetic strategies and application opportunities

Author:
Anindita Mukherjee; Alexey A. Akulov; Sougata Santra; Mikhail V. Varaksin; Grigory A. Kim; Dmitry S. Kopchuk; Olga S. Taniya; Grigory V. Zyryanov; Oleg. N. Chupakhin
Source:
RSC advances 2022 v.12 no.15 pp. 9323-9341
ISSN:
2046-2069
Subject:
DNA; electronics; geometry; moieties
Abstract:
... 2,7-Diazapyrenes are promising azaaromatic scaffolds with a unique structural geometry and supramolecular properties. This core moiety and its derivatives with some N-methyl cations like N-methyl-2,7,-diazapyrenium, and N,N′-dimethyl-2,7-diazapyrenium attract special attention due to their challenging photophysical properties, especially in the context of interactions with DNA and some of its mono ...
DOI:
10.1039/d2ra00260d

2. Bio-based arginine surface-modified ammonium polyphosphate: an efficient intumescent flame retardant for epoxy resin

Author:
Chen Cheng; Yi Wang; Yanling Lu; Shaojie Li; Hua Li; Jun Yan; Shiguo Du
Source:
RSC advances 2022 v.12 no.15 pp. 9223-9237
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; ammonium polyphosphates; arginine; calorimeters; carbon; carbonization; cation exchange; epoxides; fire safety; flame retardants; glass transition temperature; heat; nuclear magnetic resonance spectroscopy; oxygen; smoke; sustainable technology; thermogravimetry
Abstract:
... In this work, ammonium polyphosphate (APP) was surface-modified by bio-based arginine (Arg) for the first time to enhance its flame retardance for fire-safety epoxy resin (EP). The structure of Arg modified APP (Arg-APP) was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), ¹H nuclear magnetic resonance (¹H-NMR), and scanning electron microsco ...
DOI:
10.1039/d1ra09459a

3. Biodegradable MoOₓ@MB incorporated hydrogel as light-activated dressing for rapid and safe bacteria eradication and wound healing

Author:
Yifan Wang; Huiqin Yao; Yan Zu; Wenyan Yin
Source:
RSC advances 2022 v.12 no.15 pp. 8862-8877
ISSN:
2046-2069
Subject:
biodegradability; drug resistance; glutathione; heat; hydrogels; irradiation; methylene blue; nanocomposites; photosensitizing agents; therapeutics
Abstract:
... Wounds infected with drug-resistant bacteria are hard to treat, which remains a serious problem in clinical practice. An innovative strategy for treating wound infections is thus imperative. Herein, we describe the construction of a nanocomposite from biocompatible poly(vinyl alcohol) (PVA)/polyethylene glycol (PEG) hydrogel loaded biodegradable MoOₓ nanoparticles (NPs) and photosensitizer methyle ...
DOI:
10.1039/d2ra00963c

4. Controllable preparation of an ice cream-shaped hollow sphere array

Author:
Yang Liu; Xinlong Sun; Feng Zhao; Fei Zhan; Bo Zhang; Jun-Heng Fu; Lei Wang; Jing Liu
Source:
RSC advances 2022 v.12 no.15 pp. 8936-8939
ISSN:
2046-2069
Subject:
absorption; air; aqueous solutions; catalytic activity; drugs; hydrophobicity; ice; insulating materials; liquids; microparticles; models; oxidation; phase transition; surface area; wettability; zinc oxide
Abstract:
... Hollow microspheres with high specific surface area are widely used in thermal insulation, drug delivery and sustained release, catalysis and optical absorption. Eutectic gallium–indium (EGaIn) undergoes phase transformation and oxidation when heated in aqueous solution, which can provide a crystal seed and preferential growth environment for nanomaterials. Therefore, it is very promising to furth ...
DOI:
10.1039/d2ra00236a

5. Cyclodextrin and its derivatives as effective excipients for amorphous ulipristal acetate systems

Author:
Peng Wang; Yan Wang; Zili Suo; Yuanming Zhai; Hui Li
Source:
RSC advances 2022 v.12 no.15 pp. 9170-9178
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetates; bioavailability; cyclodextrins; drugs; nuclear magnetic resonance spectroscopy; pharmaceutical industry; water solubility
Abstract:
... Many efforts have been devoted to screening new solid-state forms of poorly soluble drugs in the pharmaceutical industry, thus modulating the drug properties without changing the pharmacological nature. It is a wise strategy to prepare amorphous series with cyclodextrin (CD) and its derivatives as excipients to enhance the aqueous solubility, dissolution, and bioavailability of water-insoluble dru ...
DOI:
10.1039/d1ra09420c

6. Dendritic structured palladium complexes: magnetically retrievable, highly efficient heterogeneous nanocatalyst for Suzuki and Heck cross-coupling reactions

Author:
Safoora Sheikh; Mohammad Ali Nasseri; Mohammad Chahkandi; Oliver Reiser; Ali Allahresani
Source:
RSC advances 2022 v.12 no.15 pp. 8833-8840
ISSN:
2046-2069
Subject:
catalytic activity; cross-coupling reactions; magnetism; nanocatalysts; palladium; pharmaceutical industry; polymers; solubility
Abstract:
... The recyclable nanomagnetic Pd-complex PAMAM G₀-Pd@γ-Fe₂O₃ is reported for catalytic C–C cross-coupling reactions of challenging substrates. Mainly, a great variety of aryl chlorides can be used as substrates for Suzuki–Miyaura and Mizoroki–Heck reactions under mild reaction conditions (60–90 °C) and low catalyst loading (<1 mol% Pd) in aqueous media. The presence of numerous polar groups in the p ...
DOI:
10.1039/d2ra00487a

7. Effect of water content on the physical properties and structure of walnut oleogels

Author:
Liqian Wang; Yuxiu Wen; Caihong Su; Yuan Gao; Qi Li; Shuangkui Du; Xiuzhu Yu
Source:
RSC advances 2022 v.12 no.15 pp. 8987-8995
ISSN:
2046-2069
Subject:
X-ray diffraction; calorimeters; candelilla wax; crystal structure; gelation; hardness; light microscopes; liquids; microstructure; modulus of elasticity; oils; oleogels; potato starch; rheometers; texture; walnuts; water content
Abstract:
... This study aimed to investigate the effect of water content on the properties and structure of oleogels by developing walnut oleogel based on potato starch and candelilla wax (CW). Physical, thermal, rheological and microstructure characteristics of the walnut oleogel were determined by texture analyzer, differential scanning calorimeter, rotary rheometer, X-ray diffractometer and optical microsco ...
DOI:
10.1039/d2ra00920j

8. Electrodeless hydrogen production from seawater using femtosecond laser pulses

Author:
Akira Kuwahara; Yuki Mizushima; Makoto Matsui; Tomoki Kozuka; Nobuyuki Mase
Source:
RSC advances 2022 v.12 no.15 pp. 9304-9309
ISSN:
2046-2069
Subject:
carbon dioxide; gas chromatography; hydrogen production; ionization; salinity; seawater
Abstract:
... This study presents the first experimental evidence of direct H₂ production from seawater without harmful gas emissions (e.g., CO₂, Cl₂), which uses multiphoton ionization water splitting with a femtosecond pulse laser. According to H₂ analysis using a gas chromatograph, the H₂ production rate in seawater was 70 μmol h⁻¹, which was approximately 3.3 times more than the ultrapure water case reporte ...
DOI:
10.1039/d2ra01337a

9. Experimental and theoretical study of ZrMo-KIT-6 solid acid catalyst with abundant Brønsted acid sites

Author:
Jinglin Mu; Manfen Liang; Hong Huang; Jian Meng; Leilei Xu; Zhiling Song; Mei Wu; Zhichao Miao; Shuping Zhuo; Jin Zhou
Source:
RSC advances 2022 v.12 no.15 pp. 9310-9322
ISSN:
2046-2069
Subject:
acidity; benzylation; catalysts; catalytic activity; synergism
Abstract:
... Given their excellent reusability and environmental friendliness, solid acid catalysts have drawn considerable attention in acid-catalyzed reactions. However, the rational design and synthesis of solid acid catalysts with abundant Brønsted acid sites remains a challenge. In this paper, KIT-6, Zr-KIT-6, Mo-KIT-6, and ZrMo-KIT-6 solid acid catalysts are designed and synthesized. The textural propert ...
DOI:
10.1039/d2ra00586g

10. Experimentally designed chemometric models for the assay of toxic adulterants in turmeric powder

Author:
Shymaa S. Soliman; Alaadin E. El-Haddad; Ghada A. Sedik; Mohamed R. Elghobashy; Hala E. Zaazaa; Ahmed S. Saad
Source:
RSC advances 2022 v.12 no.15 pp. 9087-9094
ISSN:
2046-2069
Subject:
acid orange 7; adulterants; algorithms; chemometrics; chromates; experimental design; lead; neural networks; prediction; spectral analysis; toxicity; turmeric
Abstract:
... Turmeric is an indispensable culinary spice in different cultures and a principal component in traditional remedies. Toxic metanil yellow (MY), acid orange 7 (AO) and lead chromate (LCM) are deliberately added to adulterate turmeric powder. This work compares the ability of multivariate chemometric models with those of artificial intelligent networks to enhance the selectivity of spectral data for ...
DOI:
10.1039/d2ra00697a

11. Facile preparation of a polypyrrole modified Chinese yam peel-based adsorbent: characterization, performance, and application in removal of Congo red dye

Author:
Yan Wang; Rongyao Chen; Zijing Dai; Qingcai Yu; Yongmei Miao; Ronghua Xu
Source:
RSC advances 2022 v.12 no.15 pp. 9424-9434
ISSN:
2046-2069
Subject:
Congo red; Dioscorea polystachya; adsorbents; adsorption; agricultural wastes; endothermy; kinetics; pollution; polymerization; pyrroles; sorption isotherms; thermodynamics
Abstract:
... In this study, Chinese yam peel (CYP) was modified with polypyrrole via an in situ polymerization method to remove Congo red from aqueous media. The prepared CYP–polypyrrole (CYP–PPy) composite was characterized using FTIR, SEM, TEM, XRD, TG and BET analysis. The performance of CYP–PPy towards the adsorption of Congo red (CR) was explored in batch mode. The removal efficiency of CR was found to be ...
DOI:
10.1039/d1ra08280a

12. Facile solvothermal synthesis of a MIL-47(V) metal–organic framework for a high-performance Epoxy/MOF coating with improved anticorrosion properties

Author:
Mahmoud Y. Zorainy; Mohamed Sheashea; Serge Kaliaguine; Mohamed Gobara; Daria. C. Boffito
Source:
RSC advances 2022 v.12 no.15 pp. 9008-9022
ISSN:
2046-2069
Subject:
aluminum alloys; chlorides; coordination polymers; corrosion; dielectric spectroscopy; epoxides; exposure duration; redox reactions; seawater; surface area; temperature; thermal stability; vanadium
Abstract:
... The vanadium-based metal–organic framework MIL-47 distinguishes itself among other MOFs for its distinctive structure and unique properties (e.g., flexible structure, high thermal stability, and high surface area). The synthesis of MIL-47 has been reported from various metal precursors, including vanadium(iii) chloride (VCl₃) as a rich source of metal ions. Attempts have been made to include other ...
DOI:
10.1039/d1ra08950a

13. Ge nanowires on top of a Ge substrate for applications in anodes of Li and Na ion batteries: a first-principles study

Author:
Shaoshuai Gao; Tingyu Zhao; Dongxu Wang; Jian Huang; Youlin Xiang; Yingjian Yu
Source:
RSC advances 2022 v.12 no.15 pp. 9163-9169
ISSN:
2046-2069
Subject:
adsorption; density functional theory; energy; lithium; nanowires; sodium
Abstract:
... In this study, density functional theory (DFT) was used to research the adsorption and diffusion features of Li and Na on Ge nanowires on top of a Ge substrate. The adsorption energies at different positions are 0.71–1.28 eV for Na and −2.96–−2.13 eV for Li. The adsorption energies can be further reduced by surface modification with one or two P atoms. In particular, the sidewall of the Ge nanowir ...
DOI:
10.1039/d2ra00444e

14. Green-synthesized gold nanoparticles from black tea extract enhance the chemosensitivity of doxorubicin in HCT116 cells via a ROS-dependent pathway

Author:
Tanushree Das; Snehasis Mishra; Sayoni Nag; Krishna Das Saha
Source:
RSC advances 2022 v.12 no.15 pp. 8996-9007
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Western blotting; apoptosis; black tea; cell lines; colorectal neoplasms; confocal microscopy; cytotoxicity; doxorubicin; flow cytometry; fluorescence emission spectroscopy; kidneys; nanogold; neoplasm cells; pro-apoptotic proteins; protein synthesis; toxicity testing; ultraviolet-visible spectroscopy; zeta potential
Abstract:
... Green gold nanoparticles (GNPs) were prepared from black tea extract (BTE) and used to examine the chemosensitivity of doxorubicin in colon cancer cell line HCT116. BTE-GNPs were prepared by a single-step method and characterized by UV-Vis spectroscopy, FTIR spectroscopy, SEM, DLS and zeta-potential. The MTT assay was performed to determine the cytotoxicity of HCT116 cells and also normal kidney c ...
DOI:
10.1039/d1ra08374k

15. Low temperature catalytic hydrodeoxygenation of lignin-derived phenols to cyclohexanols over the Ru/SBA-15 catalyst

Author:
Shanshan Feng; Xudong Liu; Zhishan Su; Guiying Li; Changwei Hu
Source:
RSC advances 2022 v.12 no.15 pp. 9352-9362
ISSN:
2046-2069
Subject:
activation energy; catalysts; eugenol; hydrogenation; particle size; temperature
Abstract:
... Cyclohexanol and its derivatives are widely used as chemical intermediates and fuel additives. Herein, Ru/SBA-15 catalysts were prepared via impregnation, and used for the production of cyclohexanols from lignin-derived phenols. The catalyst samples were characterized by XRD, XPS, TEM, etc., where the Ru⁰ species was speculated as the active phase. 5 wt% Ru/SBA-15 with small Ru particle size (4.99 ...
DOI:
10.1039/d2ra01183b

16. Molecularly imprinted polymers via reversible addition–fragmentation chain-transfer synthesis in sensing and environmental applications

Author:
Irvin Veloz Martínez; Jackeline Iturbe Ek; Ethan C. Ahn; Alan O. Sustaita
Source:
RSC advances 2022 v.12 no.15 pp. 9186-9201
ISSN:
2046-2069
Subject:
free radicals; molecular imprinting; polymerization; polymers; sorption
Abstract:
... Molecularly imprinted polymers (MIP) have shown their potential as artificial and selective receptors for environmental monitoring. These materials can be tailor-made to achieve a specific binding event with a template through a chosen mechanism. They are capable of emulating the recognition capacity of biological receptors with superior stability and versatility of integration in sensing platform ...
DOI:
10.1039/d2ra00232a

17. Ready-to-use binder-free Co(OH)₂ plates@porous rGO layers/Ni foam electrode for high-performance supercapacitors

Author:
Mustafa Aghazadeh; Hamzeh Forati Rad; Ramin Cheraghali
Source:
RSC advances 2022 v.12 no.15 pp. 9276-9291
ISSN:
2046-2069
Subject:
capacitance; electrochemical capacitors; electrochemistry; electrodes; energy; energy density; foams; graphene oxide; nanosheets; porosity; surface area; transmission electron microscopy
Abstract:
... In this work, an outstanding nano-structured composite electrode is fabricated through the co-deposition of Co(OH)₂ nanoplates and porous reduced GO (p-rGO) nanosheets onto Ni foam (NF). Through field emission scanning electron microscopy and transmission electron microscopy observations, it was confirmed that porous reduced graphene oxide sheets are completely wrapped by uniform hexagonal Co(OH)₂ ...
DOI:
10.1039/d1ra08683a

18. Simple way of making free-standing cathode electrodes for flexible lithium-ion batteries

Author:
Chih-Hung Chen; Jian-Ming Chiu; Indrajit Shown; Chen-Hao Wang
Source:
RSC advances 2022 v.12 no.15 pp. 9249-9255
ISSN:
2046-2069
Subject:
aluminum; cathodes; electrochemistry; foil; lithium batteries; strength (mechanics)
Abstract:
... The flexible electrodes used in the lithium-ion battery (LIB) offer an excellent opportunity to be bent and folded without deforming their electrochemical characteristics. However, a flexible electrode does not include metal foil as a current collector, limiting the LIB's flexibility and weakening the mechanical strength. This study fabricates flexible LiFePO₄ (LFP) free-standing electrodes by a s ...
DOI:
10.1039/d1ra08993e

19. Sorption based easy-to-use low-cost filters derived from invasive weed biomass for dye contaminated water cleanup

Author:
Smitha V. Kamath; Halanur M. Manohara; Kanakaraj Aruchamy; Ashok Shrishail Maraddi; Glenita Bridget D'Souza; Kuchangi Naraseeyappa Santhosh; K. N. Mahadevaprasad; S. K. Nataraj
Source:
RSC advances 2022 v.12 no.15 pp. 9101-9111
ISSN:
2046-2069
Subject:
Parthenium hysterophorus; ambient temperature; biomass; carbon; catalysts; invasive species; manganese monoxide; methylene blue; society; solvents; sorption; surface area; toxicity; vapors
Abstract:
... Today, the development of functional nanostructured materials with specified morphologies utilizing environmentally friendly techniques is a very appealing topic in materials chemistry. Much emphasis has recently been paid to the utilization of biomass to make functional carbonaceous materials of varying forms, specifically carbon helices, with greater implications for the environment, economy, an ...
DOI:
10.1039/d2ra00670g

20. Structural engineering of BiOBr nanosheets for boosted photodegradation performance toward rhodamine B

Author:
Yu Qi; Jinjiang Zhao; Hongtao Wang; Meifang Yan; Tianyu Guo
Source:
RSC advances 2022 v.12 no.15 pp. 8908-8917
ISSN:
2046-2069
Subject:
free radicals; irradiation; light; nanosheets; particle size; photocatalysis; photocatalysts; photolysis; rhodamines; solvents; wastewater treatment
Abstract:
... A series of BiOBr nanosheets were synthesized through a facile solvothermal method, whose structures were adjusted by changing solvent ratios. Their photodegradation properties toward rhodamine B (RhB) were further investigated under visible light irradiation. The photocatalytic results indicated that the B-1:3 sample showed superior photoactivity and the RhB removal efficiency attained 97% within ...
DOI:
10.1039/d2ra00375a