Copolymerization of EDOT with Pyrrole on TiO2 Semiconductor Films by One-Step Reaction, Structure-Dependent Electronic Properties, and Charge Conduction Models of the Composite Films

Langmuir ◽  
2014 ◽  
Vol 30 (8) ◽  
pp. 2241-2248 ◽  
Author(s):  
Xun Ma ◽  
Xiuyuan Ni
Keyword(s):  
Electronic Properties ◽  
Composite Films ◽  
Semiconductor Films ◽  
One Step

One step room temperature photodeposition of Cu/TiO2 composite films and its conversion to CuO/TiO2

2009 ◽  
Vol 517 (19) ◽  
pp. 5621-5624 ◽  
Author(s):  
Eilidh Morrison ◽  
David Gutiérrez-Tauste ◽  
Concepción Domingo ◽  
Elena Vigil ◽  
José A. Ayllón
Keyword(s):  
Room Temperature ◽  
Composite Films ◽  
One Step

One step synthesis of pure cubic and monoclinic HfO2 nanoparticles: Correlating the structure to the electronic properties of the two polymorphs

2012 ◽  
Vol 112 (10) ◽  
pp. 104107 ◽  
Author(s):  
P. Rauwel ◽  
E. Rauwel ◽  
C. Persson ◽  
M. F. Sunding ◽  
A. Galeckas
Keyword(s):  
Electronic Properties ◽  
One Step

scholarly journals Corrigendum: One‐step Synthesis and Enhanced Thermoelectric Properties of Polymer–Quantum Dot Composite Films

2020 ◽  
Vol 59 (7) ◽  
pp. 2544-2544
Author(s):  
Wei Shi ◽  
Sanyin Qu ◽  
Hongyi Chen ◽  
Yanling Chen ◽  
Qin Yao ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Thermoelectric Properties ◽  
Composite Films ◽  
One Step

scholarly journals Co-intercalated layered double hydroxides as thermal and photo-oxidation stabilizers for polypropylene

2018 ◽  
Vol 9 ◽  
pp. 2980-2988 ◽  
Author(s):  
Qian Zhang ◽  
Qiyu Gu ◽  
Fabrice Leroux ◽  
Pinggui Tang ◽  
Dianqing Li ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
High Performance ◽  
Composite Films ◽  
Inorganic Materials ◽  
Photo Oxidation ◽  
Molecular Anions ◽  
Multifunctional Additives ◽  
One Step ◽  
Overall Resistance ◽  
Double Hydroxides

An elegant and efficient approach consisting in the co-intercalation of stabilizing molecular anions is described here. The thermal stabilizer calcium diethyl bis[[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate] (Irganox 1425, MP-Ca) and a photo-oxidation stabilizer (hindered amine light stabilizer, HALS) are co-intercalated into the interlayer regions of layered double hydroxides (LDH) in a one-step coprecipitation. These hybrid organic–inorganic materials are successively dispersed in polypropylene to form H n M n ′-Ca2Al/PP composite films (with H = HALS and M = MP) through a solvent casting method. The corresponding crystalline structure, chemical composition, morphology as well as the resistance against thermal aging and photo-oxidation are carefully investigated by various techniques. The results show that the powdered H n M n ′-Ca2Al-LDHs hybrid materials have a much higher thermal stability than MP-Ca and HALS before intercalation. In addition, the H n M n ′-Ca2Al/PP composites exhibit a higher overall resistance against thermal degradation and photo-oxidation compared to LDHs intercalated with only HALS or MP. This underlines the benefit of the co-intercalation. The co-intercalated LDH materials pave a new way in designing and fabricating high-performance multifunctional additives for polymers.

Novel Semiconducting Phase of Amorphous Carbon Nickel Composite Films

2006 ◽  
Vol 910 ◽  
Author(s):  
Somnath Bhattacharyya ◽  
S. J. Henley ◽  
N. P. Blanchard ◽  
S. R. P. Silva
Keyword(s):  
Laser Ablation ◽  
Fermi Level ◽  
Electronic Properties ◽  
Valence Band ◽  
Density Of States ◽  
Amorphous Carbon ◽  
Composite Films ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Diamond Like Carbon

AbstractA homogeneously mixed phase of carbon and 10% nickel yielding amorphous carbon-nickel composite (a-C-Ni) films is prepared by an excimer UV pulsed laser ablation. Conductivity study of these films shows a nearly activated conduction. Also a saturation of conductivity below a temperature of 25 K explains the presence of an additional density of states at the Fermi level in these samples. Our experiments demonstrate a very different behaviour of electronic properties of these novel materials compared to undoped diamond-like carbon (DLC) films, which was directly confirmed using valence band spectroscopy.

scholarly journals Copper-Iron Oxide: A Highly Effective Photocatalyst Than TiO2 Prepared by One-Step Sparking Process

2021 ◽  
Author(s):  
Arisara Panthawan ◽  
Nidchamon Jumrus ◽  
Panupong Sanmuangmoon ◽  
Winai Thongpan ◽  
Tewasin Kumpika ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Iron Oxide ◽  
Annealing Temperature ◽  
Quartz Substrate ◽  
Composite Films ◽  
Energy Band Gap ◽  
Optimum Ratio ◽  
Different Temperatures ◽  
One Step ◽  
Photocatalytic Applications

Abstract Copper-iron (Cu-Fe) oxide composite films were successfully deposited on quartz substrate by a facile sparking process. The nanoparticles were deposited on the substrate after sparking off the Fe and Cu tips with different ratios and were then annealed at different temperatures. The network particles was observed after annealed the film at 700°C. Meanwhile, XRD and SAED patterns of the annealed films at 700°C consisted of a mixed phase of CuO, γ-Fe2O3, CuFe2O4 and CuFe2O. The film with a lowest energy band gap (Eg) of 2.56 eV was observed after anneal at 700°C. Interestingly, the optimum ratio and annealing temperature show highly photocatalytic activity than annealed TiO2 at 500 and 700°C. This is a novel photocatalyst which can be replace TiO2 for photocatalytic applications in the future.

scholarly journals Impact of the Incorporation of Nano-Sized Cellulose Formate on the End Quality of Polylactic Acid Composite Film

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Yidong Zhang ◽  
Chao Liu ◽  
Meiyan Wu ◽  
Zhenqiu Li ◽  
Bin Li
Keyword(s):  
Composite Film ◽  
Polylactic Acid ◽  
Composite Films ◽  
Crystallinity Index ◽  
Regenerated Cellulose ◽  
Fundamental Study ◽  
One Step ◽  
Hydrolysis Of ◽  
Better Than

Polylactic acid (PLA) films with good sustainable and biodegradable properties have been increasingly explored recently, while the poor mechanical property of PLA limits its further application. Herein, three kinds of nano-sized cellulose formate (NCF: cellulose nanofibril (CNF), cellulose nanocrystal (CNC), and regenerated cellulose formate (CF)) with different properties were fabricated via a one-step formic acid (FA) hydrolysis of tobacco stalk, and the influence of the properties of NCF with different morphologies, crystallinity index (CrI), and degree of substitution (DS) on the end quality of PLA composite film was systematically compared. Results showed that the PLA/CNC film showed the highest increase (106%) of tensile strength compared to the CNF- and CF-based films, which was induced by the rod-like CNC with higher CrI. PLA/CF film showed the largest increase (50%) of elongation at the break and more even surface, which was due to the stronger interfacial interaction between PLA and the CF with higher DS. Moreover, the degradation property of PLA/CNF film was better than that of other composite films. This fundamental study was very beneficial for the development of high-quality, sustainable packaging as an alternative to petroleum-based products.

scholarly journals Synthesis, Properties, and Derivatization of Poly(dihydrogermane): A Germanium-based Polyethylene Analogue

2020 ◽  
Author(s):  
Haoyang Yu ◽  
Chuyi Ni ◽  
Alyxandra Thiessen ◽  
Ziqi Li ◽  
Jonathan G.C. Veinot
Keyword(s):  
Electronic Properties ◽  
Pendant Group ◽  
Zintl Phase ◽  
Present Contribution ◽  
Thermally Induced ◽  
Synthesis Properties ◽  
One Step ◽  
Derivatization Reaction

<div> <div> <div> <p>Polygermanes are germanium-based analogues of polyolefins and possess polymer backbones made up catenated Ge atoms. In the present contribution we report the preparation of a stable germanium polyethylene analogue – polydihydrogermane (i.e., (GeH2)n) – via two straightforward approaches that involve topotactic deintercalation of the CaGe Zintl phase. The resulting (GeH2)n possess morphologically dependent chemical and electronic properties and thermally decompose to yield amorphous hydrogenated Ge. We also show that the resulting (GeH2)n provide a platform from which functionalized polygermanes can be prepared via thermally-induced hydrogermylation-mediated pendant group substitution. This facile one-step derivatization reaction exploits Ge–H reactivity and opens the door to a wide array of tailored functional polygermanes. </p> </div> </div> </div>

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