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. 在本文中,降解偶氮染料的橙色克(噩)在nitrogen-doped二氧化鈦光觸媒已被調(diào)查在可見光與陽光照射。 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. 在可見光照射,摻雜二氧化鈦nanocatalysts證明商業(yè)Dugussa較高的活性比P25二氧化鈦,讓更多的有效利用太陽能光,而在陽光下,P25顯示高催化活性。 According to the X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–vis spectr 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. 根據(jù)x射線衍射儀(XRD)、x射線光電子能譜(XPS)和紫外吸收spectr分析,發(fā)現(xiàn)兩者的納米anatase結(jié)構(gòu)和外觀的新型吸聲樂隊(duì)在可見光區(qū)域造成氮摻雜負(fù)責(zé)降解明顯提高可見光下王噩國的二城。 In addition, the photosensitized oxidation mechanism originated from OG itself was also considered contributing to the higher visible-light-induced degradation ef?ciency. 此外,論述了氧化機(jī)制源于噩本身還被認(rèn)為是導(dǎo)致了更高的visible-light-induced降解效率。 The effect of the initial pH of the solution and the dosage of hydrogen peroxide under different light sources was also investigated. 效果的初始溶液酸度的過氧化氫的用量下研究了各種不同的光源。 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. 可見光和陽光下,最優(yōu)解,而既2.0 pH值的最優(yōu)用量5.0和15.0過氧化氫中毒/ l,分別。 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. Azodyes,其特點(diǎn)是在場的一個或更多的氮(N N),債券是屬于最臭名昭著的普遍存在的環(huán)境污染物相關(guān)紡織、化妝品、食品著色劑、印刷、和制藥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. 因?yàn)樗麄兊膎on-degradability、毒性、潛在致癌性和豐水期,源自這些染料廢水生產(chǎn)或應(yīng)用產(chǎn)業(yè)構(gòu)成重大威脅到周圍的生態(tài)系統(tǒng)和人類的健康。[1 - 3].Environmental問題,需要滿足國際標(biāo)準(zhǔn)strin-gent拒絕廢水,取得了發(fā)展商的小說及高性價比的提純工藝偶氮染料廢水問題的主要技術(shù)的重要性。