Volume 4 Issue 1

Authors: Yanji Zhu; Qingwei Zang; Zhigang Xu; Nan Wang; Di Gu

Abstract: Dye-sensitized solar cells(DSSCs) is thought to be a candidate to realize the large-scale use of solar energy for it has many advantages such as non-toxic, high efficiency of conversion, low cost, etc. The photoanode as a media of dye adsorption, electron transport, and electrolyte diffusion is the most important part of DSSCs. The composition of the photoanode of DSSCs directly influences the conversion efficiency and long-term stability. This paper studies the doped titania nanocrystalline photoanodes for efficiency improvement of DSSCs. Through the photoelectric property test of DSSCs, it is learned that Zn2+ doped TiO2 photoanode with mole fraction of 0.05% has the best performance. Lastly, an outlook on the future challenge and prospects of doped nanocrystalline TiO2 photoanode materials are also briefly brought up.

Keywords: DSSCs; Photoanode; Doping; Concentration of Ion Doping; Photoelectric Property

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Authors: Xiaoxuan Liu; Lunyong Duan; Yingyin Chen; Jiahui Su; Yuanpei Li

Abstract: In this paper, a novel waterborne UV-curing polyurethane acrylate (UV-WPUA) was prepared from toluene diisocyanate (TDI). The polyurethane acrylate resin has been synthesized by the serial steps synthetic method. The content of carboxyl group (-COOH), and molecular weight of Polyethylene glycol (PEG) and the content of unsaturated double bonds (-CH=CH2) were optimized by the orthogonal experiment. The reaction conditions, such as order of reagent addition, neutralization agent, type of inhibitor and its water-solubility, were investigated. The resulting resin had excellent performance when the content of carboxyl group (–COOH) was 3.0 wt.%, the content of unsaturated double bonds (-CH=CH2) was 3.0 wt.%, and molecular weight of PEG was 600. The influences of initiator content, dry time, dry temperature on UV-curing rate were discussed. The bulk performance of the resin was characterized. Flexibility, adhesion, and clarity of the UV-curing coating were excellent. The UV-curing coating of aromatic resin was successfully applied to the packaging of paper such as wine bottle label, plating-aluminum card, and cigarette case.

Keywords: UV-curing Technique; UV-curable Waterborne Aromatic Polyurethane Acrylate; Packaging of Paper; Coating Formulation; Orthogonal Experiment

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Authors: Olesya E. Zhuravleva; Anna A. Khil’ko; Laura M. Simonyan

Abstract: Steelmaking dust is a by-product of steel production. It consists of metal oxides (iron, zinc, lead, etc.) and can be returned to the production cycle, or can be used in industries where its dispersion and magnetic properties are claimed. It is often impossible because the dust contains zinc and lead. Plasma processes of extraction non-ferrous metals from the dust were studied. Laboratory findings have shown that at high temperatures of plasma process extraction of zinc and lead can pass with high speed. The thermodynamic characteristics of zinc extraction degree were estimated. The research results allow to conclude about the future prospects of plasma recycling steelmaking dust.

Keywords: Plasma-arc; Extraction; Zinc; Lead; Steelmaking Dust

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