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1. Visible-light-driven photocatalytic degradation of safranin-T dye using functionalized graphene oxide nanosheet (FGS)/ZnO nanocomposites

Author:
Nenavathu, Bhavani P.; Kandula, Syam; Verma, Swati
Source:
RSC advances 2018 v.8 no.35 pp. 19659-19667
ISSN:
2046-2069
Subject:
X-ray diffraction; adsorption; aqueous solutions; dyes; environmental factors; graphene oxide; histidine; lighting; nanocomposites; nanosheets; optical properties; photocatalysis; photocatalysts; photoluminescence; photolysis; reflectance spectroscopy; synergism; transmission electron microscopy; zinc oxide
Abstract:
... Photocatalysts suffer from a lack of separation of photogenerated excitons due to the fast recombination of charge carriers, so a strong synergistic effect exhibited by photocatalysts is promising for effective photocatalysis. Herein, we have synthesized efficient visible light functionalized graphene oxide nanosheet (FGS)/ZnO nanocomposite photocatalysts via a simple and economical approach with ...
DOI:
10.1039/c8ra02237b

2. A highly selective TPE-based AIE fluorescent probe is developed for the detection of Ag⁺

Author:
Lu, Zhixiang; Liu, Yunming; Lu, Shuhan; Li, Yuan; Liu, Xiaolan; Qin, Yu; Zheng, Liyan
Source:
RSC advances 2018 v.8 no.35 pp. 19701-19706
ISSN:
2046-2069
Subject:
benzimidazole; fluorescence; fluorescent dyes; human health; photochemistry; pollution; silver; stoichiometry
Abstract:
... The detection of Ag⁺ in the environment is very important to determine the level of pollution from silver complexes, which have caused various human health problems. Herein, an aggregation-induced emission (AIE) chromophore (tetraphenylethane, TPE) attached to a benzimidazole group (tetra-benzimidazole, TBI–TPE) is synthesized and utilized to detect Ag⁺ in the environment. The strong chelating eff ...
DOI:
10.1039/c8ra03591a

3. A sensitive approach for simultaneous quantification of carbonyl and hydroxyl steroids using 96-well SPE plates based on stable isotope coded-derivatization-UPLC-MRM: method development and application

Author:
Liu, Chuanxin; Sheng, Xue; Wang, Yuming; Yin, Jia; Huang, Wei; Fan, Yunshuang; Li, Yubo; Zhang, Yanjun
Source:
RSC advances 2018 v.8 no.35 pp. 19713-19723
ISSN:
2046-2069
Subject:
derivatization; deuterium; females; males; mass spectrometry; metabolomics; moieties; monitoring; oases; rats; solid phase extraction; stable isotopes; steroid hormones; steroids; ultra-performance liquid chromatography; urinalysis
Abstract:
... Steroid hormones are crucial substances that mediate a wide range of vital physiological functions. Because of the important biological significance of steroids, this paper presents a new targeted metabolic method based on adding stable isotope tags to hydroxyl containing and carbonyl containing steroid hormones with two pairs of synthesized derivatization reagents: deuterium 4-(dimethylamino)-ben ...
DOI:
10.1039/c8ra01372a

4. Bending effect on the resistive switching behavior of a NiO/TiO₂ p–n heterojunction

Author:
Cui, Hai-peng; Li, Jian-chang; Yuan, Hai-lin
Source:
RSC advances 2018 v.8 no.35 pp. 19861-19867
ISSN:
2046-2069
Subject:
coatings; finite element analysis; permeates; tensile strength
Abstract:
... Herein, NiO/TiO₂ heterojunctions were fabricated by sol–gel spin coating on plastic substrates to investigate the effects of bending on resistive switching. The switching mechanism is well explained by the formation and rupture of oxygen-vacancy conducting filaments modulated by the p–n interface. Compared with that of the unbent film, the device ON/OFF ratio is slightly improved after 5000 bendin ...
DOI:
10.1039/c8ra01180j

5. Correction: Effect of particle size distribution on the electrochemical performance of micro-sized silicon-based negative materials

Author:
Wu, Shuaijin; Yu, Bing; Wu, Zhaohui; Fang, Sheng; Shi, Bimeng; Yang, Juanyu
Source:
RSC advances 2018 v.8 no.35 pp. 19894
ISSN:
2046-2069
Subject:
electrochemistry; particle size distribution; silicon
Abstract:
... Correction for ‘Effect of particle size distribution on the electrochemical performance of micro-sized silicon-based negative materials’ by Shuaijin Wu et al., RSC Adv., 2018, 8, 8544–8551. ...
DOI:
10.1039/c8ra90045k

6. Elucidation of the structural stability and dynamics of heterogeneous intermediate ensembles in unfolding pathway of the N-terminal domain of TDP-43

Author:
Prakash, Amresh; Kumar, Vijay; Meena, Naveen Kumar; Lynn, Andrew M.
Source:
RSC advances 2018 v.8 no.35 pp. 19835-19845
ISSN:
2046-2069
Subject:
Gibbs free energy; RNA-binding proteins; hydrophilicity; molecular dynamics; oligomerization; pathogenesis; physiology; simulation models; solvents; temperature; tryptophan; urea
Abstract:
... The N-terminal domain of the RNA binding protein TDP-43 (NTD) is essential to both physiology and proteinopathy; however, elucidation of its folding/unfolding still remains a major quest. In this study, we have investigated the biophysical behavior of intermediate ensembles employing all-atom molecular dynamics simulations in 8 M urea accelerated with high temperatures to achieve unfolded states i ...
DOI:
10.1039/c8ra03368d

7. Establishment of a reliable transfer process for fabricating chemical vapor deposition-grown graphene films with advanced and repeatable electrical properties

Author:
Sun, Dongyun; Wang, Wei; Liu, Zhaoping
Source:
RSC advances 2018 v.8 no.35 pp. 19846-19851
ISSN:
2046-2069
Subject:
cracking; electrical properties; graphene; hydrochloric acid; vapors
Abstract:
... Graphene films grown by the chemical vapor deposition (CVD) method have attracted intensive attention due to their native advantages of both high quality and large quantity for commercial applications. However, previously reported graphene films have exhibited uncertain and conflicted electrical properties that greatly hinder them from being used to build reliable electrical devices because of inc ...
DOI:
10.1039/c8ra02478b

8. Hierarchically porous SiO₂/C hollow microspheres: a highly efficient adsorbent for Congo Red removal

Author:
Wang, Jie; Xiao, Longya; Wen, Shuai; Chen, Nuo; Dai, Zhiyin; Deng, Junyang; Nie, Longhui; Min, Jie
Source:
RSC advances 2018 v.8 no.35 pp. 19852-19860
ISSN:
2046-2069
Subject:
activation energy; adsorbents; adsorption; aluminum oxide; aqueous solutions; carbon; catalysts; microparticles; models; pollutants; pollution control; porosity; silica; surface area
Abstract:
... Hierarchically porous SiO₂/C hollow microspheres (HPSCHMs) were synthesized by a hydrothermal and NaOH-etching combined route. The adsorption performance of the prepared HPSCHMs was investigated to remove Congo Red (CR) in aqueous solution. The results show that the synthesized composite possesses a hollow microspherical structure with hierarchical pores and a diameter of about 100–200 nm, and its ...
DOI:
10.1039/c8ra02988a

9. Near infrared light activatable PEI-wrapped bismuth selenide nanocomposites for photothermal/photodynamic therapy induced bacterial inactivation and dye degradation

Author:
Gorle, Govinda; Bathinapatla, Ayyappa; Chen, Yi-Zhan; Ling, Yong-Chien
Source:
RSC advances 2018 v.8 no.35 pp. 19827-19834
ISSN:
2046-2069
Subject:
Escherichia coli; Staphylococcus aureus; anti-infective agents; antibacterial properties; bacteria; drinking water; electrostatic interactions; heat; irradiation; lamps; methylene blue; nanocomposites; nanomaterials; photocatalysis; photocatalysts; photochemotherapy; photothermotherapy; pollutants; polyethyleneimine; reactive oxygen species; rhodamines
Abstract:
... The inactivation of bacteria and the degradation of organic pollutants by engineered nanomaterials (NMs) are very effective approaches for producing safe and clean drinking water. The development of new NMs which can act as NIR light mediated antimicrobial agents as well as photocatalytic agents is highly desired. In this study, a novel Bi₂Se₃ nanoplates (NPs) NM was prepared by a high-temperature ...
DOI:
10.1039/c8ra02183j

10. Nickel-foam-supported β-Ni(OH)₂ as a green anodic catalyst for energy efficient electrooxidative degradation of azo-dye wastewater

Author:
Sun, Shan; Diao, Peng; Feng, Cuiyun; Ungureanu, Eleonora-Mihaela; Tang, Yi; Hu, Bin; Hu, Qing
Source:
RSC advances 2018 v.8 no.35 pp. 19776-19785
ISSN:
2046-2069
Subject:
anodes; azo dyes; catalysts; chemical oxygen demand; decolorization; electrochemistry; energy costs; energy efficiency; hot water treatment; hydroxyl radicals; methyl orange; oxidation; pollutants; pollution control; wastewater
Abstract:
... Electrochemical oxidative degradation (EOD) is a particularly promising technique for removing organic pollutants from wastewater. However, due to the high overpotential of EOD in conventional anode materials, the energy cost of EOD is usually very high, which greatly promotes the search for highly active, stable, and energy-efficient anodic catalysts. Herein, we demonstrated that nickel-foam-supp ...
DOI:
10.1039/c8ra03039a

11. Novel caged luciferin derivatives can prolong bioluminescence imaging in vitro and in vivo

Author:
Zhang, Chaochao; Yuan, Mingliang; Han, Guangxi; Gao, Yuqi; Tang, Chunchao; Li, Xiang; Du, Lupei; Li, Minyong
Source:
RSC advances 2018 v.8 no.35 pp. 19596-19599
ISSN:
2046-2069
Subject:
bioluminescence; cytotoxicity; image analysis; luciferase; luciferin
Abstract:
... Based on N-cyclobutylaminoluciferin (cybLuc), a set of high and efficient caged bioluminescent derivatives (Clucs) as firefly luciferase pro-substrates has been developed herein. After careful examination, these molecules exhibited low cytotoxicity and prolonged bioluminescence imaging up to 6 h in vitro and in vivo. Importantly, these caged luciferin derivatives have the potential to serve as lon ...
DOI:
10.1039/c8ra02312c

12. One-step fabrication of polyamide 6 hollow fibre membrane using non-toxic diluents for organic solvent nanofiltration

Author:
Jeon, Sungil; Nishitani, Atsushi; Cheng, Liang; Fang, Li-Feng; Kato, Noriaki; Shintani, Takuji; Matsuyama, Hideto
Source:
RSC advances 2018 v.8 no.35 pp. 19879-19882
ISSN:
2046-2069
Subject:
durability; nanofiltration; polyamides; solvents; spinning
Abstract:
... We developed new polyamide 6 hollow fibre membranes using a green process to fabricate cutting-edge “organic solvent nanofiltration” membranes by one-step spinning process for organic solvent separation. This economic and sustainable membrane showed good rejection and durability performance in various organic solvents. ...
DOI:
10.1039/c8ra03328e

13. Structural study of epitaxial NdBa₂Cu₃O₇₋ₓ films by laser chemical vapor deposition

Author:
Tu, Rong; Wang, Kaidong; Wang, Ting; Yang, Meijun; Li, Qizhong; Zhang, Song; Zhang, Lianmeng; Goto, Takashi; Shi, Ji; Ohmori, Hitoshi
Source:
RSC advances 2018 v.8 no.35 pp. 19811-19817
ISSN:
2046-2069
Subject:
crystal structure; microstructure; temperature; vapors
Abstract:
... Epitaxial NdBa₂Cu₃O₇₋ₓ films were prepared on (100) LaAlO₃ single crystal substrates by laser chemical vapor deposition (laser CVD). The effect of deposition temperature on preferred orientation, crystallinity, microstructure, deposition rate of films was investigated. The preferred orientation of the NdBCO films changed from a, c-axis to c-axis, then back to a, c-axis, as the deposition temperatu ...
DOI:
10.1039/c8ra02758g

14. Synthesis and antibacterial properties of a novel magnetic nanocomposite prepared from spent pickling liquors and polyguanidine

Author:
Nguyen, Dung T.; Pham, Lan T.; Le, Ha T. T.; Vu, Minh X.; Le, Hanh T. M.; Le, Huong T. M.; Pham, Nam H.; Lu, Le T.
Source:
RSC advances 2018 v.8 no.35 pp. 19707-19712
ISSN:
2046-2069
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; ambient temperature; antibacterial properties; calcium hydroxide; factories; iron; iron oxides; magnetism; nanocomposites; nanoparticles; polymers; steel; thermogravimetry; wastewater; wastewater treatment
Abstract:
... Magnetic nanoparticles have received much interest for their application in wastewater treatment because of their easy retrieval and reuse. However, the methods used to synthesise high saturation magnetization magnetic nanoparticles require expensive and pure precursors. In the current study, we explore the potential for using spent pickling liquor, a wastewater solution from steel factories, as t ...
DOI:
10.1039/c8ra03096k

15. Theoretical design of porphyrin sensitizers with different acceptors for application in dye-sensitized solar cells

Author:
Jin, Xingyi; Li, Dongyuan; Sun, Libo; Wang, Cheng-Long; Bai, Fu-Quan
Source:
RSC advances 2018 v.8 no.35 pp. 19804-19810
ISSN:
2046-2069
Subject:
absorption; carboxylic acids; density functional theory; dyes; porphyrins; solar cells; titanium dioxide
Abstract:
... Using density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods, three porphyrin dyes with different acceptors, such as carboxylic acid, cyanoacrylic acid, and 2-cyano-N-hydroxyacrylamide, have been designed. Compared to the best sensitizer (YD2-o-C8) so far, these designed dyes have small highest occupied orbital to lowest unoccupied orbital (HOMO–LUMO) band gap ...
DOI:
10.1039/c8ra02974a

16. Waste wool derived nitrogen-doped hierarchical porous carbon for selective CO₂ capture

Author:
Li, Yao; Xu, Ran; Wang, Xin; Wang, Binbin; Cao, Jianliang; Yang, Juan; Wei, Jianping
Source:
RSC advances 2018 v.8 no.35 pp. 19818-19826
ISSN:
2046-2069
Subject:
adsorbents; adsorption; carbon; carbon dioxide; heat; nitrogen; potassium hydroxide; raw materials; surface area; wastes; wool
Abstract:
... The goal of this research is to develop a low-cost porous carbon adsorbent for selective CO₂ capture. To obtain advanced adsorbents, it is critical to understand the synergetic effect of textural characteristics and surface functionality of the adsorbents for CO₂ capture performance. Herein, we report a sustainable and scalable bio-inspired fabrication of nitrogen-doped hierarchical porous carbon ...
DOI:
10.1039/c8ra02701c

17. Zr-Induced high temperature resistance of polymer microsphere based on double crosslinked structure

Author:
Wang, Zhiyong; Lin, Meiqin; Gu, Meng; Dong, Zhaoxia; Zhang, Juan; Yang, Zihao
Source:
RSC advances 2018 v.8 no.35 pp. 19765-19775
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; UHT treatment; acetates; acrylamides; aqueous solutions; cross-linking reagents; crosslinking; differential scanning calorimetry; hydrolysis; light microscopy; microparticles; nuclear magnetic resonance spectroscopy; polymers; potassium persulfate; scanning electron microscopy; temperature; thermal stability; thermogravimetry
Abstract:
... In order to obtain polymer microspheres for profile control and water shutoff with high temperature resistance and good swelling properties, micrometer microspheres with a double crosslinked structure were synthesized using the monomers acrylamide (AM), N-vinylpyrrolidone (NVP) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS), an initiator of potassium persulfate, a crosslinking agent of N,N-m ...
DOI:
10.1039/c8ra02747a

18. An amperometric glucose biosensor based on PEDOT nanofibers

Author:
Çetin, Merih Zeynep; Camurlu, Pinar
Source:
RSC advances 2018 v.8 no.35 pp. 19724-19731
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; biosensors; commercialization; ferric chloride; glucose; hydrogen peroxide; nanofibers; oxygen consumption; polymerization; scanning electron microscopy; vapors
Abstract:
... Here we present a simple, low cost approach for the production of PEDOT nanofiber biosensors using simple techniques. Firstly, nanofibers of PEDOT were produced by the chemical vapor polymerization of EDOT on FeCl₃ containing electrospun PAN nanofiber mats. The nanofibers were characterized by SEM, FTIR, CV and conductivity studies, which indicated the formation of homogeneous, porous, electroacti ...
DOI:
10.1039/c8ra01385c

19. Carbon dots as fluorescent probes for detection of VB₁₂ based on the inner filter effect

Author:
Sun, X. Y.; Yuan, M. J.; Liu, B.; Shen, J. S.
Source:
RSC advances 2018 v.8 no.35 pp. 19786-19790
ISSN:
2046-2069
Subject:
carbon quantum dots; fluorescence; fluorescent dyes; food industry; vitamin B12
Abstract:
... In this study, we constructed a new fluorescent sensing for VB₁₂ and investigated the mechanism of vitamin B₁₂ (VB₁₂) quenching fluorescence of carbon dots (CDs). The fluorescence suppression is attributed to the inner filter effect (IFE) because of the overlap between UV-vis absorption spectrum of VB₁₂ and emission/excitation spectra of CDs. This CDs-based sensor provides obvious advantages of si ...
DOI:
10.1039/c8ra03070g

20. Charge transport in germanium doped phosphorene nanoribbons

Author:
Azizi, Maryam; Ghavami, Badie
Source:
RSC advances 2018 v.8 no.35 pp. 19479-19485
ISSN:
2046-2069
Subject:
solar cells; germanium; electrodes; phosphorus
Abstract:
... New two dimensional structures containing phosphorus and germanium atoms are introduced for nanoelectronic applications. Under various bias voltages, electronic transport in the systems has been studied with the non-equilibrium Green’s function formalism. I–V characteristics have been extracted. The density of states (DOS) and transmission spectra, T(E,Vbᵢₐₛ), have been investigated and it was sho ...
DOI:
10.1039/c8ra03041c