钼黑太阳能选择性吸收涂层的研制  

PREPARATION OF MOLYBDENUM BLACK SOLAR SELECTIVE ABSORBING COATING

作　　者：黄群武[1] 王一平[1] 韩立君[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《太阳能学报》2007年第11期1217-1220,共4页Acta Energiae Solaris Sinica

基　　金：天津市科技支撑项目(05YFGZSF02800)

摘　　要：利用NH_4Cl、(NH_4)_6Mo_7O_(24)·4H_2O的水溶液为原料液在经过预处理后的铝或铝合金基片上进行化学沉积,制备钼黑太阳光谱选择性涂层。实验考察了反应时间、反应温度、反应溶液的pH值和表面预处理方式等对涂层太阳吸收率α的影响,得到了制备钼黑涂层的优化条件,并对涂层表面进行了XPS及SEM表征。实验结果表明,涂层由Mo_xO_y组成,Mo的化学态介于+4～+6之间;铝基片制得的涂层的吸收率明显高于铝合金基片;反应温度和反应时间对于涂层的吸收率影响较为明显;基片经碱性预处理后涂层的太阳吸收率优于酸性预处理。Molybdenum black solar selective coatings was prepared by a simple chemical conversion method on chemically pretreating aluminium substrates or its alloy substrale. The effect of reaction time, reaction temperature, pH of reaction solution and pretreatment was stuied on solar absorptance of the coating and the optimized preparation condition was got. The coating was characterized using XPS and SEM. Structural studies showed that the coating consists of an oxide of Mo and the oxidation state of Mo is in between ＋ 4 and ＋ 6. The absorptance of coating on the aluminium is obvioushy higher than that on the aluminium alloy. The effect of reaction temperature and time on the absorptance of coating is great, and the pretreatment in alkalescence solution is superior to that in acidity solution.

关 键 词：钼黑 太阳光谱选择性涂层 XPS SEM 制备 

分 类 号：TQ630.1[化学工程—精细化工]