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You searched for: Journal Journal of materials chemistry A Remove constraint Journal: Journal of materials chemistry A Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Source 2014 v.2 no.21 Remove constraint Source: 2014 v.2 no.21
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1. 3D mesoporous hybrid NiCo₂O₄@graphene nanoarchitectures as electrode materials for supercapacitors with enhanced performances

Author:
Yiying Wei; Shuangqiang Chen; Dawei Su; Bing Sun; Jianguo Zhu; Guoxiu Wang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 8103-8109
ISSN:
2050-7496
Subject:
capacitance; electrodes; freeze drying; graphene; nanosheets; porous media; scanning electron microscopy; surface area; transmission electron microscopy
Abstract:
... 3D mesoporous hybrid NiCo₂O₄@graphene nanoarchitectures were successfully synthesized by a combination of freeze drying and hydrothermal reaction. Field-emission scanning electron microscopy (FESEM) and TEM analyses revealed that the NiCo₂O₄@graphene nanostructures consist of a hierarchical mesoporous sheet-on-sheet nanoarchitecture with a high specific surface area of 194 m² g⁻¹. Ultrathin NiCo₂O ...
DOI:
10.1039/c3ta15423h

2. A CO₂-stable reduction-tolerant Nd-containing dual phase membrane for oxyfuel CO₂ capture

Author:
Huixia Luo; Tobias Klande; Zhengwen Cao; Fangyi Liang; Haihui Wang; Jürgen Caro
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7780-7787
ISSN:
2050-7496
Subject:
X-ray diffraction; air; carbon dioxide; energy-dispersive X-ray analysis; methane; microstructure; oxidation; oxygen; permeability; scanning electron microscopy; sol-gel processing; synthesis gas; temperature
Abstract:
... We report a novel CO₂-stable reduction-tolerant dual-phase oxygen transport membrane 40 wt% Nd₀.₆Sr₀.₄FeO₃₋δ–60 wt% Ce₀.₉Nd₀.₁O₂₋δ (40NSFO–60CNO), which was successfully developed by a facile one-pot EDTA–citric sol–gel method. The microstructure of the crystalline 40NSFO–60CNO phase was investigated by combined in situ X-ray diffraction (XRD), scanning electron microscopy (SEM), back scattered SE ...
DOI:
10.1039/c3ta14870j

3. A facile strategy for the synthesis of hierarchical TiO₂/CdS hollow sphere heterostructures with excellent visible light activity

Author:
Chao Xue; Ting Wang; Guidong Yang; Bolun Yang; Shujiang Ding
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7674-7679
ISSN:
2050-7496
Subject:
cadmium sulfide; irradiation; light; methyl orange; photocatalysis; rhodamines; titanium dioxide
Abstract:
... A facile and efficient strategy for the synthesis of hierarchical TiO₂/CdS hollow sphere (HS) heterostructures has been developed. Evaluation of the TiO₂/CdS HS heterostructures for the degradation of rhodamine B (RhB) and methyl orange (MO) revealed that they exhibit excellent photocatalytic activity under visible light irradiation. ...
DOI:
10.1039/c4ta01190b

4. A novel high-photoactivity quaternary ZnSn(OH)₆–graphene composite evolved from a 3D multilayer structure via a facile and green proton-mediated self-assembly method

Author:
W. H. Feng; Z. X. Pei; Z. B. Fang; M. L. Huang; M. L. Lu; S. X. Weng; Z. Y. Zheng; J. Hu; P. Liu
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7802-7811
ISSN:
2050-7496
Subject:
chemical bonding; methyl orange; nanosheets; photocatalysis; photolysis; rhodamines; ultraviolet radiation
Abstract:
... A novel chemically bonded ZnSn(OH)₆ (ZHS) nanocube (NC)–graphene (GR) nanosheet (NS) (ZHS–H–GR) composite, with a quaternary architecture evolved from a ZHS/GR/ZHS-multilayer structure, is obtained successfully via a facile, green and efficient proton-mediated electrostatic self-assembly approach, followed by a mild photoreduction process. The as-synthesized ZHS–H–GR is made up of some chemical bo ...
DOI:
10.1039/c3ta15022d

5. A novel self-healing poly(amic acid) ammonium salt hydrogel with temperature-responsivity and robust mechanical properties

Author:
Li Zhang; Juntao Wu; Na Sun; Xiaomin Zhang; Lei Jiang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7666-7668
ISSN:
2050-7496
Subject:
ammonium salts; hydrogels; strength (mechanics)
Abstract:
... The fabrication of hydrogels with excellent self-healing properties and high mechanical strength has become a challenging and fascinating topic. The aim of this study is to fabricate a novel robust PAS hydrogel with self-healing properties. The self-healing mechanism and possible interactions between PAS chains of the hydrogel are proposed. ...
DOI:
10.1039/c3ta15429g

6. A simple route to transform normal hydrophilic cloth into a superhydrophobic–superhydrophilic hybrid surface

Author:
Ben Wang; Yabin Zhang; Weixin Liang; Guiyuan Wang; Zhiguang Guo; Weimin Liu
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7845-7852
ISSN:
2050-7496
Subject:
Coleoptera; cobalt; droplets; energy; fabrics; hydrophilicity; hydrophobicity; iron; nanoparticles; thiols; water harvesting
Abstract:
... Metal nanoparticles are known as extremely hydrophilic substances due to their high surface energy. Hydrophobic properties of the metal nanoparticles can be realized only if the nanoparticles are pretreated with low-surface-energy chemicals. In this paper, two adjacent transition metals, i.e. Fe and Co, were selected and coated on a commercially available fabric via a facile in situ growth method. ...
DOI:
10.1039/c4ta00833b

7. A versatile approach for creating hybrid semiconducting polymer–fullerene architectures for organic electronics

Author:
Sofia Kakogianni; Souzana N. Kourkouli; Aikaterini K. Andreopoulou; Joannis K. Kallitsis
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 8110-8117
ISSN:
2050-7496
Subject:
azides; chemistry; composite polymers; electronics; fluorine; fullerene; semiconductors; thiophene
Abstract:
... A novel methodology, through which fullerenes are effectively introduced directly onto semiconducting species, is presented herein. Electron accepting perfluorophenyl-quinolines either as small molecules, as homopolymers, or as random copolymers with regioregular poly(3-alkyl thiophene), have been synthesized and further employed for the preparation of hybrid materials with C₆₀ or PCBM. More speci ...
DOI:
10.1039/c4ta00741g

8. A work-function tunable polyelectrolyte complex (PEI:PSS) as a cathode interfacial layer for inverted organic solar cells

Author:
Zhenhua Lin; Jingjing Chang; Jie Zhang; Changyun Jiang; Jishan Wu; Chunxiang Zhu
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7788-7794
ISSN:
2050-7496
Subject:
cathodes; electric current; imines; ions; polymers; protonation; solar cells; sulfonates
Abstract:
... High-efficiency inverted polymer solar cells (PSCs) with a polyelectrolyte complex, polyethylenimine:poly(styrenesulfonate) (PEI:PSS), as the cathode interfacial layer for efficient electron extraction are demonstrated. By introducing the negatively charged PSS⁻ as the counter ions into PEI, the imine protonation could be tuned, leading to tunable work-function of the PEI:PSS coated ITO. The incor ...
DOI:
10.1039/c4ta00289j

9. Ab initio DFT+U analysis of oxygen transport in LaCoO₃: the effect of Co³⁺ magnetic states

Author:
Andrew M. Ritzmann; Michele Pavone; Ana B. Muñoz-García; John A. Keith; Emily A. Carter
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 8060-8074
ISSN:
2050-7496
Subject:
cathodes; cobalt; density functional theory; diffusivity; electricity generation; fuel cells; ions; magnetism; oxygen; temperature
Abstract:
... Although solid oxide fuel cells (SOFCs) provide clean and efficient electricity generation, high operating temperatures (T > 800 °C) limit their widespread use. Lowering operating temperatures (600 °C < T < 800 °C) requires developing next-generation mixed ion-electron conducting (MIEC) cathodes that permit facile oxygen transport. One promising MIEC material, La₁₋ₓSrₓCo₁₋yFeyO₃ (LSCF), can operat ...
DOI:
10.1039/c4ta00801d

10. Abinitio thermodynamic model of Cu₂ZnSnS₄

Author:
Adam J. Jackson; Aron Walsh
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7829-7836
ISSN:
2050-7496
Subject:
copper zinc tin sulfide; crystal structure; density functional theory; films (materials); partial pressure; solar cells; solar energy; stoichiometry; sulfur; temperature; thermodynamic models; thermodynamics
Abstract:
... Thin-film solar cells based on the semiconductor Cu₂ZnSnS₄ (CZTS) are a promising candidate for terawatt-scale renewable energy generation. While CZTS is composed of earth abundant and non-toxic elements, arranged in the kesterite crystal structure, there is a synthetic challenge to produce high-quality stoichiometric materials over large areas. We calculate the thermodynamic potentials of CZTS an ...
DOI:
10.1039/c4ta00892h

11. An amino group functionalized metal–organic framework as a luminescent probe for highly selective sensing of Fe³⁺ ions

Author:
Zhonghua Xiang; Chuanqi Fang; Sanhua Leng; Dapeng Cao
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7662-7665
ISSN:
2050-7496
Subject:
chemistry; coordination polymers; iron; luminescence; metal ions
Abstract:
... In this work, metal–organic framework (MOF) UMCM-1 and amino functionalized MOF (i.e., UMCM-1-NH₂) were synthesized and their performances as luminescent probes were investigated. It is found that both unmodified and amino functionalized MOFs exhibit a luminescence quenching effect on metal ions. In particular, the amino functionalized MOF (UMCM-1-NH₂) possesses high sensitivity and selectivity fo ...
DOI:
10.1039/c4ta00313f

12. An efficient synthesis of hydrothermally stable mesoporous aluminosilicates with significant decreased organic templates by a seed-assisted approach

Author:
Junsu Jin; Li Cao; Qingxun Hu; Chunyan Xu; Xionghou Gao; Wei Feng; Honghai Liu; Hongtao Liu
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7853-7861
ISSN:
2050-7496
Subject:
aluminum silicates; crystals; gels; industrial applications; porous media; zeolites
Abstract:
... Recent reports on the synthesis of mesoporous aluminosilicates (MAs) with hydrothermal stability opened up a promising way to cracking large molecules. However, a large amount of organic template and a low zeolite yield remained unresolved for the practical application of MAs. In this article, an efficient and green route for synthesizing MAs with high hydrothermal stability is developed, which is ...
DOI:
10.1039/c4ta00075g

13. An in situ self-assembled core–shell precursor route to prepare ultrasmall copper nanoparticles on silica catalysts

Author:
Liuye Mo; Sibudjing Kawi
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7837-7844
ISSN:
2050-7496
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; butyric acid; carbon; catalysts; catalytic activity; copper; copper nanoparticles; energy-dispersive X-ray analysis; nitrates; scanning electron microscopy; silica
Abstract:
... Ultrasmall copper nanoparticles (1.6 nm) on silica catalysts were successfully prepared via an in situ self-assembled core–shell precursor route. XRD, SEM-EDS and chemisorption results showed that only fatty acids with carbon chain length > 2 carbon atoms could effectively promote the dispersion of copper on silica. XPS results showed that non-stoichiometric copper butyrate was formed when butyric ...
DOI:
10.1039/c3ta14592a

14. Bio-inspired carbon nitride mesoporous spheres for artificial photosynthesis: photocatalytic cofactor regeneration for sustainable enzymatic synthesis

Author:
Jianhui Huang; Markus Antonietti; Jian Liu
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7686-7693
ISSN:
2050-7496
Subject:
NAD (coenzyme); carbon nitride; colloids; graphene; nanosheets; photocatalysis; photosynthesis; porous media; thylakoids
Abstract:
... Inspired by the photosynthetic thylakoid membrane of chloroplasts, we present here the rational design of mesoporous structured colloids made up of graphitic carbon nitride nanosheets and demonstrate their application in photocatalytic NADH regeneration for sustainable enzymatic synthesis. ...
DOI:
10.1039/c4ta00793j

15. Biotemplated synthesis of bark-structured TiC nanowires as Pt catalyst supports with enhanced electrocatalytic activity and durability for methanol oxidation

Author:
Zhen Qiu; Hui Huang; Jun Du; Xinyong Tao; Yang Xia; Tong Feng; Yongping Gan; Wenkui Zhang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 8003-8008
ISSN:
2050-7496
Subject:
carbon; catalysts; catalytic activity; crystallization; durability; electrical conductivity; electrochemistry; ethylene glycol; fuel cells; lint cotton; methanol; nanoparticles; nanopores; nanowires; oxidation; platinum; surface area
Abstract:
... Developing Pt eletrocatalysts with high activity and long-term durability remains a great challenge in commercializing fuel cells. Herein, we report a new kind of bark-structured TiC nanowire (NW) as an efficient support for Pt electrocatalysts, which exhibits a higher electrochemically active surface area (ECSA), much improved electrocatalytic activity and long-term durability toward a methanol o ...
DOI:
10.1039/c4ta00277f

16. Brookite TiO₂ decorated α-Fe₂O₃ nanoheterostructures with rod morphologies for gas sensor application

Author:
Yanshuang Wang; Shurong Wang; Hongxin Zhang; Xueling Gao; Jiedi Yang; Liwei Wang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7935-7943
ISSN:
2050-7496
Subject:
acetone; ambient temperature; benzene; butanol; catalytic activity; ethanol; ferric oxide; lithium batteries; methanol; nanoparticles; nanorods; pollutants; surfactants; titanium dioxide; toluene; volatile organic compounds; wastewater treatment; xylene
Abstract:
... In this paper, brookite-TiO₂/α-Fe₂O₃ heterostructured nanorods were synthesized by a facile two-step solution approach without using any templates or surfactants. α-Fe₂O₃ nanorods were first successfully obtained via a simple solution method at room temperature. The α-Fe₂O₃ nanorods were further employed as supports to construct nanoheterostructures for gas sensor application. The gas sensor based ...
DOI:
10.1039/c4ta00163j

17. Construction of PANI–cellulose composite fibers with good antistatic properties

Author:
Xingwei Shi; Yanli Hu; Feiya Fu; Jinping Zhou; Yixiang Wang; Lingyun Chen; Hongming Zhang; Ji Li; Xianhong Wang; Lina Zhang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7669-7673
ISSN:
2050-7496
Subject:
cellulose; hydrogen bonding; hydrophilicity; hydrophobicity; polyaniline; semiconductors; sodium hydroxide; solvents; urea
Abstract:
... For the first time, novel polyaniline (PANI)–cellulose filament fibers have been successfully spun from hydrophobic PANI and hydrophilic cellulose complex solution dissolved in aqueous containing 7 wt% NaOH/12 wt% urea as the solvent by wet-spinning. The composite fibers had a circular cross-section and homogenous surface structure, as a result of good miscibility between PANI and cellulose associ ...
DOI:
10.1039/c4ta01149j

18. Control of porosity of novel carbazole-modified polytriazine frameworks for highly selective separation of CO₂–N₂

Author:
Yao Liu; Shaofei Wu; Gang Wang; Guipeng Yu; Jianguo Guan; Chunyue Pan; Zhonggang Wang
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7795-7801
ISSN:
2050-7496
Subject:
carbon dioxide; engineering; ethyl acetate; heat; models; moieties; nanopores; polymers; porosity; sorbents; thermal stability
Abstract:
... Engineering porosity and surface functionalization in nanoporous organic polymers remain challenging. Here, we achieve control over the porosity as well as the pre-functionalization of pore walls of a carbazole-modified polytriazine framework by the introduction of three different appended functional groups (methyl, ethyl acetate and phenyl). All the synthesized nanoporous organic polytriazines (N ...
DOI:
10.1039/c4ta00298a

19. EQCM analysis of redox behavior of Prussian blue in a lithium battery electrolyte

Author:
Shunsuke Yagi; Masaaki Fukuda; Rie Makiura; Tetsu Ichitsubo; Eiichiro Matsubara
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 8041-8047
ISSN:
2050-7496
Subject:
adsorption; cations; desorption; electrochemistry; lithium; lithium batteries; oxidation; quartz crystal microbalance
Abstract:
... Prussian blue (PB) and its analogues (PBAs) have been intensively studied and are now increasingly attractive for battery applications in particular because of their ability to accommodate a wide variety of ions including polyvalent cations. The redox reactions of PB and PBAs are believed to be very fast and reversible. However, it is not always true. In this paper, we clarify the detailed redox b ...
DOI:
10.1039/c4ta00410h

20. Effect of copper metalation of tetrabenzoporphyrin donor material on organic solar cell performance

Author:
Michele Guide; Jason D. A. Lin; Christopher M. Proctor; Jingrun Chen; Carlos García-Cervera; Thuc-Quyen Nguyen
Source:
Journal of materials chemistry A 2014 v.2 no.21 pp. 7890-7896
ISSN:
2050-7496
Subject:
absorption; atomic force microscopy; copper; films (materials); models; solar cells; solar energy
Abstract:
... The effects of copper metalation of tetrabenzoporphyrin on the properties and performance of organic solar cells are studied. Tetrabenzoporphyrin (BP) and copper tetrabenzoporphyrin (CuBP) are both solution processed from soluble precursor materials and thermally converted in the thin film. Despite high field-effect hole mobility above 1 cm² V⁻¹ s⁻¹, the power conversion efficiency (PCE) of solar ...
DOI:
10.1039/c4ta01068j