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过程工程学报 2006
SynthesisofNitrogen-dopedTitaniabySolvothermalReactionsinAlcoholsKeywords: nitrogen-dopedtitania,solvothermalsynthesis,alcohol,photocatalysis,nitrogenmonoxide,decomposition Abstract: Nitrogen-dopedtitaniananoparticleswereobtainedbythehomogeneousprecipitationinhexamethylenetetramine-titaniumtrichloride-alcoholaqueoussolutionsat90℃followedbyheatingat190℃.Anatase,rutileandbrookitewereobtained,wherethecrystallitesize,specificsurfaceareaandcolorgreatlychangedas5~50nm,20~200m2/gandlightgraytoyellow,dependingonthesolventandpH.Theproductsaftercalcinationwereyellow,indicatingdopingwithnitrogenion.Allcoloredtitaniashowedphotocatalyticactivityundervisiblelightirradiationfortheoxidativedecompositionofnitrogenmonoxideinair.Especially,thenanoparticlesofanatasetypenitrogen-dopedtitaniaobtainedusingmethanolaqueoussolutionshowedexcellentphotocatalyticactivity.
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