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• 2018-11-15 22:37發(fā)布了問(wèn)答

  各種蟲(chóng)子哪些是有關(guān)酶的核心期刊

  　

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• 2017-12-15 09:51發(fā)布了問(wèn)答

  酶是什么產(chǎn)生的具有催化功能的什么

  　

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• 2017-07-02 09:25發(fā)布了問(wèn)答

  二氧化鈦基復(fù)合納米纖維有哪些種類

  　

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• 2017-04-11 08:30發(fā)布了問(wèn)答

  化學(xué)鍵屬于物理范疇嗎

  　

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• 2017-01-23 13:12發(fā)布了問(wèn)答

  生物酶是怎么催化有機(jī)化學(xué)反應(yīng)的

  　

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• 2016-05-12 06:44發(fā)布了問(wèn)答

  脫硫技術(shù)的生物脫硫

  　

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• 2011-08-21 10:05發(fā)布了問(wèn)答

  初中物理問(wèn)題：請(qǐng)問(wèn)可以說(shuō)催化劑是催化反應(yīng)的反應(yīng)物嗎？

  　

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• 2011-05-06 19:00發(fā)布了問(wèn)答

  英語(yǔ)高手幫忙翻譯段英文 謝謝??！

  In this paper， the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation， the doped TiO2 nanocatalysts demonstrated ... In this paper， the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation， the doped TiO2 nanocatalysts demonstrated higher activity than the commercial Dugussa P25 TiO2， allowing more ef?cient utilization of solar light， while under sunlight， P25 showed higher photocatalytic activity. According to the X-ray diffraction (XRD)， X-ray photoelectron spectroscopy (XPS) and UV–vis spectra analyses， it was found that both the nanosized anatase structure and the appearance of new absorption band in the visible region caused by nitrogen doping were responsible for the signi?cant enhancement of OG degradation under visible light. In addition， the photosensitized oxidation mechanism originated from OG itself was also considered contributing to the higher visible-light-induced degradation ef?ciency. The effect of the initial pH of the solution and the dosage of hydrogen peroxide under different light sources was also investigated. Under visible light and sunlight， the optimal solution pH was both 2.0， while the optimal dosage of H2O2 was 5.0 and 15.0 mmol/l， respectively. Azodyes， which are characterized by the presence of one or more azo bonds ( N N )， are among the most notorious widespread environmental pollutants associated with textile，cosmetic， food colorants， printing， and pharmaceutical indus-tries. Because of their non-degradability， toxicity， potential mutagenicity and carcinogenicity， wastewaters originating from these dyes production or application industries pose a major threat to the surrounding ecosystems and human beings’ health.[1–3].Environmental concerns and the need of meeting the strin-gent international standards for rejecting wastewaters has made the development of novel and cost-effective processes for the puri?cation of azo dyes ef?uents an issue of major technological importance. 展開(kāi)

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