碳在氯铂酸水溶液中吸附行为的研究

分别对碳进行硝酸、空气氧化及惰性气氛下高温处理。采用BET法和红外光谱法测试了3种方法处理的碳的孔隙结构和表面化学性质。经空气氧化和惰性气氛下高温处理后碳材料的孔隙结构变化较大，而经硝酸溶液处理碳材料孔隙结构变化较小；FTIR谱图研究表明，硝酸处理和空气氧化后碳表面官能团较其处理前的多，惰性气氛下高温处理可使部分官能团分解。研究了氯铂酸水溶液在各种碳上的等温吸附情况，并利用Langmuir吸附模型模拟了等温吸附线。结果表明：经硝酸处理后的碳上的氯铂酸溶液吸附量显著增加，在惰性气氛下热处理后的碳上其吸附量降低。

Adsorption of Hydrochloroplatinic Acid in Aqueous Solution on Carbon

Carbons were altered by various methods including HNO 3 oxidation and air oxidation and treatment in inert gases of high temperature, respectively. The pore structure and surface characteristics of the carbon materials were studied in detail by means of the method of BET and IR. The change of the pore structure is more prominent by air oxidation and treatment in inert gases of high temperature than by HNO 3 oxidation. FTIR spectra of all kinds of carbons imply that the oxygen surface functionalities of the activated carbon studied are more by HNO 3 oxidation and by air oxidation than non-oxidation, and some oxygen surface functionalities of the activated carbon are decomposed in inert gases of high temperature. The adsorption of hydrochloroplatinic acid in aqueous solution on carbon was studied and moduled the isotherms adsorption by Langmuir model was studied. It is concluded that the quantity of the adsorption of hydrochloroplatinic acid in aqueous solution on carbon by HNO 3 oxidation increases, but reduces on the carbon by treatment in inert gases at high temperature.