CAJ | 학술논문

利用水热法,以 Degussa P-25 TiO2粉末为原料,AlCl3、Fe(NO3)3·9H2O 和 ZnCl2为掺杂剂合成金属掺杂纳米管 TiO2,并采用透射电镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和BET比表面积分析对催化剂进行表征。结果表明,掺杂金属分别以Al3+、Fe3+和Zn2+的形式存在。随着煅烧温度的增高,样品的比表面积逐渐降低,锐钛矿含量先增大后减小；金属掺杂后,催化剂比表面积略有降低,锐钛矿含量略有增大。考察紫外光催化臭氧化工艺中TiO2降解腐植酸标志物的催化效果,结果表明,450℃煅烧未掺杂纳米管 TiO2对腐植酸的催化降解效率为44%,较P-25TiO2粉末提高了11%；金属掺杂后催化效果提升明显,550℃煅烧 Fe 掺杂纳米管 TiO2的催化效果最为显著,腐植酸去除率达77%。
이용수열법,이 Degussa P-25 TiO2분말위원료,AlCl3、Fe(NO3)3·9H2O 화 ZnCl2위참잡제합성금속참잡납미관 TiO2,병채용투사전경(TEM)、X사선연사(XRD)、X사선광전자능보(XPS)화BET비표면적분석대최화제진행표정。결과표명,참잡금속분별이Al3+、Fe3+화Zn2+적형식존재。수착단소온도적증고,양품적비표면적축점강저,예태광함량선증대후감소；금속참잡후,최화제비표면적략유강저,예태광함량략유증대。고찰자외광최화취양화공예중TiO2강해부식산표지물적최화효과,결과표명,450℃단소미참잡납미관 TiO2대부식산적최화강해효솔위44%,교P-25TiO2분말제고료11%；금속참잡후최화효과제승명현,550℃단소 Fe 참잡납미관 TiO2적최화효과최위현저,부식산거제솔체77%。
Ions-doped TiO2 nanotubes were synthesized via a hydrothermal method and characterized by trans-mission electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy and specific surface areas. The binding energies of Al2p,Fe2p and Zn2p indicated that the doping ions existed as Al3+,Fe3+ and Zn2+,re-spectively.With the increase of the calcination temperature,the specific surface area decreased.The intensity of anatase phase declined with enhancing the calcination temperature,and then decreased.The specific surface area decreased and the weight fractions of anatase phase increased when metal ions were doped into the catalyst. The removal efficiency of humic acid (HA)was 44% when un-doped TiO2 nanotubes calcined at 450℃ were added,11% higher than that in the presence of P-25 TiO2 powder.Fe-doped TiO2 nanotubes calcined at 550℃had the best photocatalytic activity,as 77% of HA was degraded when this catalyst was added.