CAJ | 학술논문

为了提高 TiO2光解水制氢的光催化性能，通过水热合成法一步制备了 S 掺杂 TiO2／石墨烯（RGO）复合催化剂。采用XRD、XPS、FT‐IR、TEM、U V‐Vis等测试方法对其进行了表征，并研究了复合催化剂光催化分解水制氢性能。结果表明，在S‐TiO2／RGO复合催化剂中，TiO2以14 nm 左右的纳米颗粒分散在石墨烯片层上；与同等条件下制备的 TiO2相比，复合催化剂在可见光区的吸收明显增强；当m（S）∶m（RGO）∶m（TiO2）为1∶01．∶25时，所制备的复合催化剂在同等条件下产氢速率最大，为1417．μmol／h。
위료제고 TiO2광해수제경적광최화성능，통과수열합성법일보제비료 S 참잡 TiO2／석묵희（RGO）복합최화제。채용XRD、XPS、FT‐IR、TEM、U V‐Vis등측시방법대기진행료표정，병연구료복합최화제광최화분해수제경성능。결과표명，재S‐TiO2／RGO복합최화제중，TiO2이14 nm 좌우적납미과립분산재석묵희편층상；여동등조건하제비적 TiO2상비，복합최화제재가견광구적흡수명현증강；당m（S）∶m（RGO）∶m（TiO2）위1∶01．∶25시，소제비적복합최화제재동등조건하산경속솔최대，위1417．μmol／h。
In order to improve the photocatalytic performance of TiO2 for splitting water to get hydrogen ,S doped TiO2/graphene composites (S‐TiO2/RGO) were prepared with a one‐step hydrothermal method in the paper .The prepared photocatalysts were characterized by XRD ,XPS ,FT‐IR ,TEM ,UV‐Vis testing tech‐niques .In addition ,the photocatalytic activity for splitting water of the prepared photocatalysts was investiga‐ted .The results showed that TiO2 particles with size of 14 nm were dispersed on the surface of graphene sheets uniformly in the S‐TiO2/RGO composite .Compared with TiO2 prepared under the same condition ,the absorp‐tion of S‐TiO2/RGO composite in the visible region was significantly enhanced .When S∶RGO∶TiO2 of mass ratio is 1∶0 1.∶25 ,the rate of hydrogen production is up to 141 7.μmol/h with composite photocatalysts .