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You searched for: Journal name RSC advances Remove constraint Journal name: RSC advances Publication year rev 7984-2016 Remove constraint Publication year rev: 7984-2016 Source 2016 v.6 no.59 Remove constraint Source: 2016 v.6 no.59
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1. A 4.92% efficiency Cu₂ZnSnS₄ solar cell from nanoparticle ink and molecular solution

Author:
Wei Wang; Honglie Shen; Lydia Helena Wong; Zhenghua Su; Hanyu Yao; Yufang Li
Source:
RSC advances 2016 v.6 no.59 pp. 54049-54053
ISSN:
2046-2069
Subject:
copper zinc tin sulfide; crystal structure; molybdenum; nanoparticles; solar cells
Abstract:
... Quaternary Cu₂ZnSnS₄ (CZTS) thin films were prepared by a low-cost, simple and environmentally-friendly ink method. By depositing molecular solution on the nanoparticle thin film, the quality of as-prepared CZTS thin films was greatly improved (e.g. reduction of fine grain layer formation and improved crystallinity). The effect of the number of spin-coated layers from molecular solution on solar c ...
DOI:
10.1039/c6ra08604g

2. Activated charcoal mediated purification of Yellow Sodium Sulphate: a green process to utilize a hazardous by-product of the leather chemical industry

Author:
Sandipan Chatterjee; Rajarshi De; Arka Gupta
Source:
RSC advances 2016 v.6 no.59 pp. 53651-53656
ISSN:
2046-2069
Subject:
activated carbon; byproducts; chemical industry; chromium; filtrates; leather; leather tanning; pH; pollution; recycling; sodium sulfate; toxicity
Abstract:
... Basic Chrome Sulphate (BCS) is an important industrial chemical, which is predominantly used in the leather tanning process. During the production of BCS, huge amounts of non-utilizable, hazardous by-product, Yellow Sodium Sulphate (YSS), are generated which is basically Na₂SO₄ contaminated with ∼1% Na₂Cr₂O₇. Huge accumulation of this YSS has become a matter of concern for BCS manufacturers partic ...
DOI:
10.1039/c6ra01271j

3. AgX@carbon (X = Br and I) as robust and efficient catalysts for the reaction of propargylic alcohols and CO₂ to carbonates under ambient conditions

Author:
Jikuan Qiu; Yuling Zhao; Huiyong Wang; Guokai Cui; Jianji Wang
Source:
RSC advances 2016 v.6 no.59 pp. 54020-54026
ISSN:
2046-2069
Subject:
activated carbon; ambient temperature; atmospheric pressure; bromides; bromine; carbon dioxide; carbonates; catalysts; catalytic activity; green chemistry; iodides; iodine; silver; solvents
Abstract:
... Development of new efficient catalytic systems for chemical transformation of CO₂ is a very attractive topic in green chemistry. In this work, we studied the synthesis of α-alkylidene cyclic carbonates through the coupling reaction between propargylic alcohols and CO₂ with new silver catalysts. It was found that activated carbon supported AgX (X = Br and I) was a simple and efficient catalyst for ...
DOI:
10.1039/c6ra05224j

4. Catalytic cracking of n-pentane over CLD modified HZSM-5 zeolites

Author:
Xu Hou; Yuan Qiu; Xiangwen Zhang; Guozhu Liu
Source:
RSC advances 2016 v.6 no.59 pp. 54580-54588
ISSN:
2046-2069
Subject:
Lewis acids; catalysts; catalytic activity; catalytic cracking; liquids; models; pentane; silica; sorption; titanium dioxide; zeolites
Abstract:
... With the intrinsic MFI structure well-preserved, HZSM-5 zeolite was controllably surface-modified via a CLD (chemical liquid deposition) strategy and wrapped by tailorable porous SiO₂ or TiO₂ overlayers. It was found that the CLD-modified catalysts brought about a (maximum 46%) promotion of catalytic activity using the catalytic cracking of n-pentane as a model reaction at 500 °C, attributed to th ...
DOI:
10.1039/c6ra10102j

5. Catalytic oxidation of NO over MnO₂ with different crystal structures

Author:
Hu Chen; Ying Wang; Yong-Kang Lv
Source:
RSC advances 2016 v.6 no.59 pp. 54032-54040
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; catalysts; catalytic activity; crystal structure; hot water treatment; hydrogen; manganese dioxide; nitric oxide; nitrogen; oxidation; oxygen; scanning electron microscopy; sulfur dioxide
Abstract:
... α-, β-, γ- and δ-MnO₂ catalysts were prepared by a hydrothermal method and their catalytic properties for NO oxidation were evaluated. There were dramatic differences in the activities among the MnO₂ catalysts with different crystal structures. The γ-MnO₂ catalyst exhibited the best activity among the four catalysts and gave rise to 91% NO conversion at 250 °C. Moreover, 50% of NO conversion was a ...
DOI:
10.1039/c6ra10103h

6. Cinchona alkaloid and di-tert-butyldicarbonate–DMAP promoted efficient synthesis of (E)-nitroolefins

Author:
Nataraj Poomathi; Paramasivan T. Perumal
Source:
RSC advances 2016 v.6 no.59 pp. 54495-54502
ISSN:
2046-2069
Subject:
Cinchona; aldehydes; alkaloids
Abstract:
... The synthesis of nitroolefins from aldehydes and olefins is generally limited by the formation of a mixture of cis and trans compounds. Here we report an alternative, metal-free protocol for the synthesis of β-nitroolefins from arylidinemalononitrile using cinchona alkaloid along with di-tert-butyldicarbonate–DMAP in high yields with total selectivity. ...
DOI:
10.1039/c6ra06644e

7. Concise syntheses of bridged morpholines

Author:
Andrey V. Zaytsev; James E. Pickles; Suzannah J. Harnor; Alistair P. Henderson; Mohammed Alyasiri; Paul G. Waddell; Celine Cano; Roger J. Griffin; Bernard T. Golding
Source:
RSC advances 2016 v.6 no.59 pp. 53955-53957
ISSN:
2046-2069
Subject:
carboxylic acids; morpholines
Abstract:
... Concise and practical syntheses of 8-oxa-3-aza-bicyclo[3.2.1]octane and 9-oxa-3-aza-bicyclo[3.3.1]nonane are described starting from furan-2,5-dicarboxylic acid and 4H-pyran-2,6-dicarboxylic acid, respectively, and using a solvent-free step for a key cyclisation. ...
DOI:
10.1039/c6ra08737j

8. Conjugation of biogenic and synthetic polyamines with trypsin and trypsin inhibitor

Author:
P. Chanphai; T. J. Thomas; H. A. Tajmir-Riahi
Source:
RSC advances 2016 v.6 no.59 pp. 53690-53697
ISSN:
2046-2069
Subject:
aqueous solutions; hydrogen bonding; molecular models; spectroscopy; spermidine; spermine; thermodynamics; trypsin; trypsin inhibitors; van der Waals forces
Abstract:
... Polyamine–protein conjugates can be used as delivery tools to transport antitumor polyamine analogues. We report the conjugation of trypsin and trypsin inhibitor with biogenic polyamines spermine (spm), spermidine (spmd) and synthetic polyamines 3,7,11,15-tetrazaheptadecane·4HCl (BE-333) in aqueous solution. Multiple spectroscopic methods, thermodynamic parameters and molecular modeling were used ...
DOI:
10.1039/c6ra09492a

9. Controlled synthesis of CoₓMn₃₋ₓO₄ nanoparticles with a tunable composition and size for high performance lithium-ion batteries

Author:
Xiaoshi Hu; Chao Li; Xiaobing Lou; Xiaojing Yan; Yanqun Ning; Qun Chen; Bingwen Hu
Source:
RSC advances 2016 v.6 no.59 pp. 54270-54276
ISSN:
2046-2069
Subject:
annealing; case studies; cobalt; coordination polymers; electrochemistry; lithium batteries; manganese; nanoparticles; particle size; temperature
Abstract:
... We present a new and simple strategy to synthesize uniform CoₓMn₃₋ₓO₄ nanoparticles with a tunable composition and size. A series of Co and Mn mixed-metal coordination polymer precursors with a precise metal ratio were firstly built solvothermally by merely adjusting the molar ratio of Co and Mn. After subsequent annealing treatment, a pure CoₓMn₃₋ₓO₄ phase was obtained. The particle sizes of the ...
DOI:
10.1039/c6ra08700k

10. Controlled synthesis, bioimaging and toxicity assessments in strong red emitting Mn²⁺ doped NaYF₄:Yb³⁺/Ho³⁺ nanophosphors

Author:
K. L. Reddy; M. Rai; N. Prabhakar; R. Arppe; S. B. Rai; S. K. Singh; J. M. Rosenholm; V. Krishnan
Source:
RSC advances 2016 v.6 no.59 pp. 53698-53704
ISSN:
2046-2069
Subject:
composite polymers; fluorescence; image analysis; imines; manganese; nanoparticles; neoplasm cells; neoplasms; polyethylene; red light; toxicity
Abstract:
... Rare earth, Yb³⁺/Ho³⁺ doped NaYF₄ nanophosphors showed augmentation of visible green and red light emission by the introduction of Mn²⁺ as a co-dopant. Nanophosphors were characterized for their morphology and upconversion (UC) fluorescence, as a function of co-dopant concentration. The effect of Mn²⁺ doping has been investigated to explore the UC mechanism of the phosphors. With the introduction ...
DOI:
10.1039/c6ra07106f

11. Dazzling green emission from graphene oxide nanosheet-embedded co-doped Ce³⁺ and Tb³⁺:PVA polymer nanocomposites for photonic applications

Author:
K. Naveen Kumar; R. Padma; J. L. Rao; Misook Kang
Source:
RSC advances 2016 v.6 no.59 pp. 54525-54538
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; cerium; energy transfer; films (materials); fluorescence; graphene oxide; nanosheets; photoluminescence; photons; polymer nanocomposites; polymers; terbium
Abstract:
... Novel dazzling green emission has been obtained from graphene oxide nanosheet-embedded Ce³⁺ and Tb³⁺:PVA polymer nanocomposites under UV excitation. We have successfully synthesized Tb³⁺:PVA, Ce³⁺ + Tb³⁺:PVA and Ce³⁺ + Tb³⁺ + graphene oxide nanosheet (GO NS):PVA polymer films by the solution casting method. For these polymer films, their XRD and FTIR spectral profiles have been analyzed for struct ...
DOI:
10.1039/c6ra05864g

12. Dopamine carbon nanodots as effective photothermal agents for cancer therapy

Author:
Yang Li; Xiaoyu Zhang; Min Zheng; Shi Liu; Zhigang Xie
Source:
RSC advances 2016 v.6 no.59 pp. 54087-54091
ISSN:
2046-2069
Subject:
aqueous solutions; carbon; cytotoxicity; dopamine; hot water treatment; irradiation; nanotechnology; photostability; therapeutics; thermal stability; uterine cervical neoplasms
Abstract:
... Dopamine carbon nanodots (DA CNDs) with an average diameter of approximately 23 nm were prepared through a facile hydrothermal method without adding any passivating agents. The as-prepared DA CNDs have high photothermal conversion efficiency (35%), excellent photostability and thermal stability. More importantly, DA CNDs exhibit significant photothermal therapeutic effects toward human cervical ca ...
DOI:
10.1039/c6ra02932a

13. Effect of valence states of Ni and Mn on the structural and electrochemical properties of Li₁.₂NiₓMn₀.₈₋ₓO₂ cathode materials for lithium-ion batteries

Author:
Shaokun Chong; Yongning Liu; Wuwei Yan; Yuanzhen Chen
Source:
RSC advances 2016 v.6 no.59 pp. 53662-53668
ISSN:
2046-2069
Subject:
X-ray photoelectron spectroscopy; cathodes; commercialization; electric potential difference; electrochemistry; lithium batteries; manganese; mixing; nickel; oxidation; oxides
Abstract:
... Severe capacity fading and voltage decay of Li-rich layered oxides for lithium-ion batteries remain the major bottlenecks to commercialization. Herein, we studied the effect of valence states of Ni and Mn on the structure and electrochemical performances of Li₁.₂NiₓMn₀.₈₋ₓO₂. The oxidation states of the transition-metal (TM) were evaluated by X-ray photoelectron spectra (XPS) and validated by cycl ...
DOI:
10.1039/c6ra09454f

14. Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

Author:
Maziyar Makaremi; Chia Xin Lim; Pooria Pasbakhsh; Sui Mae Lee; Kheng Lim Goh; Hengky Chang; Eng Seng Chan
Source:
RSC advances 2016 v.6 no.59 pp. 53882-53893
ISSN:
2046-2069
Subject:
adsorption; antibacterial properties; bacteria; biofouling; chitosan; coatings; filtration; heavy metals; modulus of elasticity; nanofibers; nanoparticles; permeability; polyacrylonitrile; risk; tensile strength; water shortages; zinc oxide
Abstract:
... Water scarcity has become a global systemic risk, prompting the development of more efficient filtration technologies. Recently, increasing attention has been given to low cost membrane materials such as polyacrylonitrile (PAN) nanofibers for water filtration. In this study, electrospun PAN nanofibrous membranes were functionalized with zinc oxide (ZnO) nanoparticles and coated with a layer of ele ...
DOI:
10.1039/c6ra05942b

15. Epitaxial growth of aluminum borate whiskers and simultaneous joining of alumina ceramics via a sol–gel method

Author:
Zhijie Wang; Jian Cao; Yifeng Wang; Jicai Feng
Source:
RSC advances 2016 v.6 no.59 pp. 54249-54255
ISSN:
2046-2069
Subject:
X-ray diffraction; air; aluminum; aluminum oxide; borates; ceramics; scanning electron microscopy; sol-gel processing; temperature; transmission electron microscopy
Abstract:
... Aluminum borate whiskers were epitaxially grown on alumina by a sol–gel method. The morphology of the whiskers was investigated via scanning electron microscopy, X-ray diffraction and transmission electron microscopy. As the holding time and growth temperature increased, the length of the whiskers first increased and then decreased. The whiskers (Al₄B₂O₉ and Al₁₈B₄O₃₃) were 5–20 μm in length and h ...
DOI:
10.1039/c6ra05850g

16. Fabrication of montmorillonite and titanate nanotube based coatings via layer-by-layer self-assembly method to enhance the thermal stability, flame retardancy and ultraviolet protection of polyethylene terephthalate (PET) fabric

Author:
Ying Pan; Wei Wang; Haifeng Pan; Jing Zhan; Yuan Hu
Source:
RSC advances 2016 v.6 no.59 pp. 53625-53634
ISSN:
2046-2069
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; calorimetry; chitosan; coatings; fabrics; fire resistance; heat; montmorillonite; nanotubes; polyethylene terephthalates; scanning electron microscopy; synergism; thermal stability; thermogravimetry
Abstract:
... Montmorillonite (MMT) and titanate nanotube (TNT) based coatings have been prepared through a layer-by-layer self-assembly method, in order to enhance the thermal and thermal-oxidative stability, flame retardancy and ultraviolet protection of polyethylene terephthalate (PET) fabric. To fabricate these coatings, positively charged chitosan was chosen to cooperate with negatively charged MMT and TNT ...
DOI:
10.1039/c6ra05213d

17. Facile controlled synthesis of a hierarchical porous nanocoral-like Co₃S₄ electrode for high-performance supercapacitors

Author:
Guijing Liu; Bo Wang; Lei Wang; Tiefeng Liu; Tiantian Gao; Dianlong Wang
Source:
RSC advances 2016 v.6 no.59 pp. 54076-54086
ISSN:
2046-2069
Subject:
activated carbon; capacitance; electrochemistry; electrodes; electrolytes; energy density; foams; nickel; porous media; potassium hydroxide; scanning electron microscopy; sulfides
Abstract:
... A facile one-step hydrothermal process is developed to synthesize a porous nanocoral-like Co₃S₄, which directly grows on a three dimensional (3D) macroporous nickel (Ni) foam. The scanning electron microscopy (SEM) images reveal the uniform formation of a Co₃S₄ nanocoral cluster on Ni foam with a hierarchical porous structure. The crystal growth mechanism and factors that influence the formation o ...
DOI:
10.1039/c6ra10427d

18. Facile preparation of self-healing waterborne superhydrophobic coatings based on fluoroalkyl silane-loaded microcapsules

Author:
Qingqing Rao; Kunlin Chen; Chaoxia Wang
Source:
RSC advances 2016 v.6 no.59 pp. 53949-53954
ISSN:
2046-2069
Subject:
coatings; hydrophobicity; irradiation; mechanical damage; nanoparticles; photocatalysis; resins; silane; silica; siloxanes; solar radiation; titanium dioxide; ultraviolet radiation; weathering
Abstract:
... Superhydrophobic surfaces have attracted tremendous attraction because of their novel aspects of surface physics and important applications ranging from self-cleaning materials to microfluidic devices. However, most artificial superhydrophobic surfaces easily lose their superhydrophobicity under natural sunlight irradiation, physical rubbing or organic contamination. Here, fluoroalkyl silane (FAS) ...
DOI:
10.1039/c6ra09582h

19. Facile synthesis of 3-amino-5-aryl-1,2,4-oxadiazoles via PIDA-mediated intramolecular oxidative cyclization

Author:
Kuan Lu; Liancheng Duan; Boxuan Xu; Weile Yin; Di Wu; Yanfang Zhao; Ping Gong
Source:
RSC advances 2016 v.6 no.59 pp. 54277-54280
ISSN:
2046-2069
Subject:
chemical bonding; cyclization reactions; oxidants; toxicity
Abstract:
... A mild and efficient method for the synthesis of 3-amino-5-aryl-1,2,4-oxadiazole by intramolecular cyclization using PhI(OAc)₂ (PIDA) as an oxidant is developed. Various 3-amino-5-aryl-1,2,4-oxadiazoles are prepared in moderate to good yields, and the PIDA-mediated N–O bond formation mechanism is suggested. In view of the readily available starting materials, operational simplicity, high functiona ...
DOI:
10.1039/c6ra08871f

20. Facile tailoring of the two-dimensional graphene oxide channels for gas separation

Author:
Jie Shen; Mengchen Zhang; Gongping Liu; Wanqin Jin
Source:
RSC advances 2016 v.6 no.59 pp. 54281-54285
ISSN:
2046-2069
Subject:
carbon dioxide; graphene oxide; permeability
Abstract:
... This work demonstrates a facile method of finely tailoring the graphene oxide (GO) nanochannels by controlling their surface oxygenated functionalities. The as-prepared membrane with subnanometer interlayer nanochannels (0.36 nm) and CO₂-philic properties showed excellent preferential CO₂ permeation performance, which offers promising potential for CO₂ capture. ...
DOI:
10.1039/c6ra08441a