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You searched for: Journal RSC advances Remove constraint Journal: RSC advances Publication Year 2021 Remove constraint Publication Year: 2021 Source 2021 v.11 no.15 Remove constraint Source: 2021 v.11 no.15
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1. A catalytic mechanism investigation of TiF₃ on hydriding/dehydriding properties of Mg₈₅Cu₅Ni₁₀ alloy

Author:
Yin, Yi; Qi, Yuanhong; Li, Bo; Gu, Hu; Zhao, Jinghui; Ji, Liqiang; Zhang, Bo; Yuan, Zeming; Zhang, Yanghuan
Source:
RSC advances 2021 v.11 no.15 pp. 8940-8950
ISSN:
2046-2069
Subject:
absorption; activation energy; alloys; dehydrogenation; desorption; enthalpy; hydrogen; hydrogenation; microstructure; nanocrystals
Abstract:
... In this research, Mg₈₅Cu₅Ni₁₀–x wt% TiF₃ (x = 0, 2, 4, 6, 8) alloys were synthetized via ball milling and the catalytic mechanism of TiF₃ on hydrogenation and dehydrogenation of Mg₈₅Cu₅Ni₁₀ was studied. The microstructure, hydriding/dehydriding kinetics and thermodynamics of the alloys were discussed in detail. The TiF₃ catalyzed alloys have faster hydriding/dehydriding kinetics and lower thermody ...
DOI:
10.1039/d0ra10224e

2. A highly sensitive and selective on–off fluorescent sensor based on a complex of polySchiff-Fe²⁺ for Cr(vi) detection in an aqueous medium

Author:
Li, Zhiying; Li, Congshu; Yan, Huiyun
Source:
RSC advances 2021 v.11 no.15 pp. 8963-8969
ISSN:
2046-2069
Subject:
aqueous solutions; chromium; detection limit; fluorescence; humans; oxidation; polyethylene; schiff bases; synthesis; tap water
Abstract:
... Designing exceptional probes to detect minute quantities of chromium(vi) is of huge importance for the safety and health of the human race. In this study, a green fluorescence emission probe (polyethylene Schiff base-chelated Fe²⁺ complex) was synthesized by a one-pot synthesis method for the highly selective and sensitive detection of Cr(vi) in an aqueous solution. The complex of polyethylene Sch ...
DOI:
10.1039/d0ra07458f

3. Constructing helical nanowires via polymerization-induced self-assembly

Author:
Chen, Qiumeng; Li, Yahui; Liu, Ming; Wu, Xuan; Shen, Jianliang; Shen, Liangliang
Source:
RSC advances 2021 v.11 no.15 pp. 8986-8992
ISSN:
2046-2069
Subject:
composite polymers; nanowires; stabilizers
Abstract:
... While reliable strategies for constructing block copolymer (BCP) nanowires have been developed, helical nanowires are rarely reported in polymerization-induced self-assembly (PISA). Herein, in this work, a new strategy for constructing helical nanowires was developed via PISA mediated by a fluorinated stabilizer block. Ultralong nanowires with helical structure can be readily produced in a wide ra ...
DOI:
10.1039/d1ra00439e

4. Electrochemical investigation and amperometry determination iodate based on ionic liquid/polyoxotungstate/P-doped electrochemically reduced graphene oxide multi-component nanocomposite modified glassy carbon electrode

Author:
Sharifi, Minoo; Dianat, Somayeh; Hosseinian, Amin
Source:
RSC advances 2021 v.11 no.15 pp. 8993-9007
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; detection limit; electrochemistry; electroplating; energy-dispersive X-ray analysis; glassy carbon electrode; graphene oxide; hot water treatment; iodates; iodized salt; ionic liquids; mineral water; nanocomposites; sensors (equipment); tap water; transmission electron microscopy; ultraviolet-visible spectroscopy; voltammetry
Abstract:
... A novel modified glassy carbon electrode (GCE) was successfully fabricated with a tetra-component nanocomposite consisting of (1,1′-(1,4-butanediyl)dipyridinium) ionic liquid (bdpy), SiW₁₁O₃₉Ni(H₂O) (SiW₁₁Ni) Keggin-type polyoxometalate (POM), and phosphorus-doped electrochemically reduced graphene oxide (P-ERGO) by electrodeposition technique. The (bdpy)SiW₁₁Ni/GO hybrid nanocomposite was synthes ...
DOI:
10.1039/d1ra00845e

5. Electrochemical synthesis of biobased polymers and polymer building blocks from vanillin

Author:
Kunkel, Robin; Schmidt, Volkmar M.; Cremers, Carsten; Müller, Dominik; Schmiedl, Detlef; Tübke, Jens
Source:
RSC advances 2021 v.11 no.15 pp. 8970-8985
ISSN:
2046-2069
Subject:
cathodes; electrochemistry; electrolysis; electrosynthesis; gel chromatography; green chemistry; molecular weight; polymers; vanillin; voltammetry
Abstract:
... Vanillin, one of the few biobased aromatic compounds available on an industrial level, is an attractive candidate for the synthesis of biobased polymers and polymer building blocks. This study presents a detailed investigation of the reductive electrochemical coupling process by pinacolization of vanillin and divanillin in an electrochemical H-type cell setup to the polymer building block hydrovan ...
DOI:
10.1039/d1ra00649e

6. Elemental sulphur in the synthesis of sulphur-containing polymers: reaction mechanisms and green prospects

Author:
Tarasova, Natalia P.; Zanin, Alexey A.; Krivoborodov, Efrem G.; Mezhuev, Yaroslav O.
Source:
RSC advances 2021 v.11 no.15 pp. 9008-9020
ISSN:
2046-2069
Subject:
crosslinking; green chemistry; sulfur; temperature
Abstract:
... The synthesis of polymers using elemental sulphur as a chemical agent has been studied in relation to the worldwide overproduction of cyclo-octasulphur. Herein, the mechanisms of the processes leading to the inclusion of elemental sulphur into macromolecules have been reviewed and the main methods for reduction of the reaction temperature required for the S₈ ring opening have been shown. Approache ...
DOI:
10.1039/d0ra10507d

7. Rapid and sensitive determination of doxorubicin in human whole blood by vertically-ordered mesoporous silica film modified electrochemically pretreated glassy carbon electrodes

Author:
Wang, Meifang; Lin, Jing; Gong, Jiawei; Ma, Mingchen; Tang, Hongliang; Liu, Jiyang; Yan, Fei
Source:
RSC advances 2021 v.11 no.15 pp. 9021-9028
ISSN:
2046-2069
Subject:
blood; carbon; cost effectiveness; detection limit; doxorubicin; electrochemistry; humans; porous media; silica
Abstract:
... Direct and accurate detection of doxorubicin (DOX) in unprocessed human whole blood is of vital importance in medical diagnosis and monitoring. In this work, we demonstrate the utilization of electrochemically pretreated glassy carbon electrodes (p-GCE) modified with vertically-ordered mesoporous silica films (VMSF) for rapid and sensitive electrochemical detection of DOX. The electrochemically pr ...
DOI:
10.1039/d0ra10000e

8. Studies on the interactions of Ag(i) with DNA and their implication on the DNA-templated synthesis of silver nanoclusters and on the interaction with complementary DNA and RNA sequences

Author:
Hoz, Alejandra de la; Navarro, Alba; Aviñó, Anna; Eritja, Ramon; Gargallo, Raimundo
Source:
RSC advances 2021 v.11 no.15 pp. 9029-9042
ISSN:
2046-2069
Subject:
DNA probes; borohydrides; circular dichroism spectroscopy; complementary DNA; fluorescence; microRNA; nanosilver; oligonucleotides; silver; spectral analysis; temperature
Abstract:
... Silver nanoclusters (AgNCs) prepared by the reduction of silver ions in the presence of DNA oligonucleotides have attracted great interest as potential diagnostic tools for their tunable and high fluorescent properties. In this work, three DNA sequences that consist of a 12-nucleotide long probe sequence at the 5′-end linked to the complementary sequence to three miRNAs are studied. First, the int ...
DOI:
10.1039/d1ra00194a

9. Terephthalate and trimesate metal–organic frameworks of Mn, Co, and Ni: exploring photostability by spectroscopy

Author:
Gupta, Nishesh Kumar; Bae, Jiyeol; Kim, Suho; Kim, Kwang Soo
Source:
RSC advances 2021 v.11 no.15 pp. 8951-8962
ISSN:
2046-2069
Subject:
absorbance; decarboxylation; energy; oxidation; photostability; porosity; surface area; ultrasonic treatment; ultraviolet radiation
Abstract:
... We report a rapid synthesis for the fabrication of terephthalate and trimesate metal–organic frameworks (MOFs) of Mn, Co, and Ni by ultrasonication of organic linkers with freshly prepared metal hydroxides. The MOFs were characterized by various microscopic and spectroscopic techniques to understand their structural, functional, and optical properties. MOFs with low bandgap energy (1.88–2.73 eV) s ...
DOI:
10.1039/d1ra00181g

10. A formal [3 + 3] cycloaddition of allenyl imide and activated ketones for the synthesis of tetrasubstituted 2-pyrones

Author:
Wang, Yu-Hao; Zhang, De-Hua; Cao, Ze-Hun; Li, Wang-Lai; Huang, Yi-Yong
Source:
RSC advances 2021 v.11 no.15 pp. 8867-8870
ISSN:
2046-2069
Subject:
allene; carbon; cycloaddition reactions
Abstract:
... CsOH·H₂O-catalyzed formal [3 + 3] cycloadditions of allenyl imide with β-ketoesters, 1,3-diketones or β-ketonitriles for the synthesis of tetrasubstituted 2-pyrone derivatives have been demonstrated. The allenyl imide was utilized as a C3-synthon, and a ketenyl intermediate was proposed via the process of 1,4-addition of carbon anion to allene followed by elimination of the 2-oxazolidinyl group. ...
DOI:
10.1039/d0ra10686k

11. A nanoprobe for fluorescent monitoring of microRNA and targeted delivery of drugs

Author:
Zuo, Chen; Guo, Yongcan; Li, Junjie; Peng, Zhiping; Bai, Shulian; Yang, Shuangshuang; Wang, Ding; Chen, Hui; Xie, Guoming
Source:
RSC advances 2021 v.11 no.15 pp. 8871-8878
ISSN:
2046-2069
Subject:
biomarkers; cytotoxicity; detection limit; doxorubicin; drug delivery systems; fluorescence; ligands; microRNA; neoplasms
Abstract:
... Multifunctional nano-materials that can be used to monitor the expression of specific biomarkers and serve as vehicles for controlled drug delivery are highly desirable. Herein, we report a new DNA-hybrid-gated core–shell upconversion nanoprobe (UCNP@MOF/DOX) for fluorescence analysis of microRNA-21 (miR-21), which also triggers the release of drug loaded in the probes for on-demand anti-cancer tr ...
DOI:
10.1039/d1ra00154j

12. Conformational fingerprinting of tau variants and strains by Raman spectroscopy

Author:
Devitt, George; Crisford, Anna; Rice, William; Weismiller, Hilary A.; Fan, Zhanyun; Commins, Caitlin; Hyman, Bradley T.; Margittai, Martin; Mahajan, Sumeet; Mudher, Amrit
Source:
RSC advances 2021 v.11 no.15 pp. 8899-8915
ISSN:
2046-2069
Subject:
RNA; Raman spectroscopy; heparin; multivariate analysis; neurodegenerative diseases; post-translational modification; protein conformation; spectral analysis
Abstract:
... Tauopathies are a group of disorders in which the deposition of abnormally folded tau protein accompanies neurodegeneration. The development of methods for detection and classification of pathological changes in protein conformation are desirable for understanding the factors that influence the structural polymorphism of aggregates in tauopathies. We have previously demonstrated the utility of Ram ...
DOI:
10.1039/d1ra00870f

13. Correction: The metabolomic analysis of five Mentha species: cytotoxicity, anti-Helicobacter assessment, and the development of polymeric micelles for enhancing the anti-Helicobacter activity

Author:
Bakr, Riham O.; Tawfike, Ahmed F.; El-Gizawy, Heba A.; Tawfik, Nashwa; Abdelmohsen, Usama Ramadan; Abdelwahab, Miada F.; Alshareef, Walaa A.; Fayez, Sahar M.; El-Mancy, Shereen M. S.; El-Fishawy, Ahlam M.; Abdelkawy, Mostafa A.; Fayed, Marwa A. A.
Source:
RSC advances 2021 v.11 no.15 pp. 8916
ISSN:
2046-2069
Subject:
Mentha; cytotoxicity; metabolomics; micelles; polymers
Abstract:
... Correction for ‘The metabolomic analysis of five Mentha species: cytotoxicity, anti-Helicobacter assessment, and the development of polymeric micelles for enhancing the anti-Helicobacter activity’ by Riham O. Bakr et al., RSC Adv., 2021, 11, 7318–7330, DOI: 10.1039/D0RA09334C. ...
DOI:
10.1039/d1ra90085d

14. Effect of morphology on larvicidal activity of chemically synthesized zinc oxide nanoparticles against mosquito vectors

Author:
Gunathilaka, U. M. T. M.; de Silva, W. A. P. P.; Dunuweera, S. P.; Rajapakse, R. M. G.
Source:
RSC advances 2021 v.11 no.15 pp. 8857-8866
ISSN:
2046-2069
Subject:
; Aedes albopictus; Anopheles vagus; dengue; instars; larvicides; malaria; mortality; toxicity; zinc oxide
Abstract:
... We report the larvicidal effects of four different morphologies of zinc oxide nanoparticles (ZnO NPs) [star-shaped (S), needle-like (N), plate-like (P) and cubical (C)] on larvae of Aedes albopictus and Anopheles vagus; the mosquitoes causing dengue fever and malaria, respectively. The nanoparticles were characterized by several analytical techniques, and their sizes and shapes were determined. Se ...
DOI:
10.1039/d1ra00014d

15. Equivalence between inverted regions of the energy gap law and inverted regions of donor–acceptor distances in photoinduced electron transfer processes in flavoproteins

Author:
Nunthaboot, Nadtanet; Taniguchi, Seiji; Chosrowjan, Haik; Tanaka, Fumio
Source:
RSC advances 2021 v.11 no.15 pp. 8821-8832
ISSN:
2046-2069
Subject:
Gibbs free energy; acyl-CoA dehydrogenase; electron transfer; energy; flavoproteins; molecular dynamics
Abstract:
... In the present work, we discuss about the relationship between the energy gap law and extended Dutton law in flavoproteins. The extend Dutton law is defined herein as the dependence of logarithmic rates (ln Rate) of photoinduced electron transfer (ET) from aromatic amino acids to excited isoalloxazine (Iso*) on donor–acceptor distances (Rcs). Both functions of ln Rate vs. negative values of the st ...
DOI:
10.1039/d0ra09716k

16. Influences of copper–potassium ion exchange process on the optical bandgaps and spectroscopic properties of Cr³⁺/Yb³⁺ co-doped in lanthanum aluminosilicate glasses

Author:
Le, T. H.; Phan, Anh-Luan; Ty, Nguyen Minh; Zhou, Dacheng; Qiu, Jianbei; Dan, Ho Kim
Source:
RSC advances 2021 v.11 no.15 pp. 8917-8926
ISSN:
2046-2069
Subject:
aluminum silicates; copper; energy transfer; ion exchange; lanthanum; luminescence; potassium; spectroscopy
Abstract:
... In this study, lanthanum aluminosilicate glasses with compositions of 45SiO₂–20Al₂O₃–12.5LaF₃–10BaF₂–9K₂O–1Cr₂O₃–2.5Yb₂O₃ (SALBK) were prepared using the conventional melting method and copper–potassium ion exchange process. Influences of the ion exchange process between copper and potassium on the visible, upconversion, and near-infrared luminescence spectra of Cr³⁺/Yb³⁺ co-doped under excitation ...
DOI:
10.1039/d0ra10831f

17. Novel sustainable materials from waste plastics: compatibilized blend from discarded bale wrap and plastic bottles

Author:
Gupta, Arvind; Misra, Manjusri; Mohanty, Amar K.
Source:
RSC advances 2021 v.11 no.15 pp. 8594-8605
ISSN:
2046-2069
Subject:
energy transfer; impact strength; landfills; polyethylene; polyethylene terephthalates; tensile strength; value added
Abstract:
... This work studies a novel sustainable polymeric material made from a reactive blend of two agri-food waste plastics, with the new material showing strong promise for value-added industrial uses. Discarded bale wrap destined for landfill that was originally made from linear low density polyethylene (LLDPE) and used polyethylene terephthalate (PET)-based plastic bottles were melt mixed in a twin-scr ...
DOI:
10.1039/d1ra00254f

18. Research progress on the applications of paper chips

Author:
Tong, Xin; Ga, Lu; Zhao, Ruiguo; Ai, Jun
Source:
RSC advances 2021 v.11 no.15 pp. 8793-8820
ISSN:
2046-2069
Subject:
analytical methods; paper; quality of life
Abstract:
... Due to the modern pursuit of the quality of life, science and technology have rapidly developed, resulting in higher requirements for various detection methods based on analytical technology. Herein, the development, fabrication, detection and application of paper-based microfluidic chips (μPAD) are summarized. We aim to provide a comprehensive understanding of paper chips, and then discuss challe ...
DOI:
10.1039/d0ra10470a

19. Scale-up experiments of SO₂ removal and the promoting behavior of NO in moving beds at medium temperatures

Author:
Ma, Shuangchen; Bie, Xuan; Gong, Chunqin; Qu, Baozhong; Liu, Daokuan
Source:
RSC advances 2021 v.11 no.15 pp. 8846-8856
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; adsorbents; application technology; flue gas; flue gas desulfurization; reaction kinetics
Abstract:
... The dry flue gas desulfurization (FGD) method was studied, which is a part of the integrated removal of multi-pollutants at medium temperatures. Although dry flue gas treatment is a simple and effective method, it is still a highly empirical-led application technology. A superior desulfurization adsorbent, fine powder of NaHCO₃ (hereinafter called fine NaHCO₃), was selected by scale-up experiments ...
DOI:
10.1039/d0ra10164h

20. Simultaneous amorphous silica and phosphorus recovery from rice husk poultry litter ash

Author:
Fiameni, Laura; Assi, Ahmad; Fahimi, Ario; Valentim, Bruno; Moreira, Karen; Predeanu, Georgeta; Slăvescu, Valerica; Vasile, Bogdan Ş.; Nicoară, Adrian I.; Borgese, Laura; Boniardi, Gaia; Turolla, Andrea; Canziani, Roberto; Bontempi, Elza
Source:
RSC advances 2021 v.11 no.15 pp. 8927-8939
ISSN:
2046-2069
Subject:
animal proteins; circular economy; fertilizers; food production; livestock and meat industry; phosphorus; poultry manure; raw materials; rice hulls; silica; waste disposal; Europe
Abstract:
... The livestock sector is one of the most important sectors of the agricultural economy due to an increase in the demand for animal protein. This increase generates serious waste disposal concerns and has negative environmental consequences. Furthermore, the food production chain needs phosphorus (P), which is listed as a critical raw material due to its high demand and limited availability in Europ ...
DOI:
10.1039/d0ra10120f