An algorithm of fast HEVC PU size decision using information entropy

	An algorithm of fast HEVC PU size decision using information entropy
	Feng, L.; M. Dai; L. Sun and C. Zhao
	2016
发表期刊	Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology
卷号	48 期号:9
摘要	We report an efficient visible light-induced reduction of hexavalent chromium Cr(VI) to trivalent Cr(III) by direct illumination of an aqueous solution of potassium dichromate (K2Cr2O7) in the presence of hydrogenated silicon nanowires (H-SiNWs) or silicon nanowires decorated with copper nanoparticles (Cu NPs-SiNWs) as photocatalyst The SiNW arrays investigated in this study were prepared by chemical etching of crystalline silicon in HF/AgNO3 aqueous solution. The Cu NPs were deposited on SiNW arrays via electroless deposition technique. Visible light irradiation of an aqueous solution of K2Cr2O7 (10(-4) M) in presence of H-SiNWs showed that these substrates were not efficient for Cr(VI) reduction. The reduction efficiency achieved was less than 10% after 120 min irradiation at lambda > 420nm. Addition of organic acids such as citric or adipic acid in the solution accelerated Cr(VI) reduction in a concentration-dependent manner. Interestingly, Cu NPs-SiNWs was found to be a very efficient interface for the reduction of Cr(VI) to Cr(III) in absence of organic acids. Almost a full reduction of Cr(VI) was achieved by direct visible light irradiation for 140 min using this photocatalyst. (C) 2015 Elsevier B.V. All rights reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56912
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Feng, L.,M. Dai,L. Sun and C. Zhao. An algorithm of fast HEVC PU size decision using information entropy[J]. Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology,2016,48(9).
APA	Feng, L.,M. Dai,&L. Sun and C. Zhao.(2016).An algorithm of fast HEVC PU size decision using information entropy.Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology,48(9).
MLA	Feng, L.,et al."An algorithm of fast HEVC PU size decision using information entropy".Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology 48.9(2016).

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