CAJ | 학술논문

采用水热法制备了Cu改性的BiVO4催化剂并进行了表征,用于模拟含酚废水的降解。考察了催化剂制备条件和光催化降解工艺对该样品在可见光下催化氧化去除苯酚效果的影响。结果表明,在中性条件下制备的催化剂活性最高,在空气通入量为200 mL/min、催化剂加入量为1 mg/L时,反应180 min后,对含酚废水的去除率最高达92.4%。采用X射线衍射和紫外-可见光谱等表征手段对催化剂的结构性质进行了表征。结果表明,Cu的复合使可见光吸收带发生红移,吸收强度也有较大幅度的提高,当pH=7时,Cu-BiVO4的单斜晶相特征峰的强度最强,晶型较完整。
채용수열법제비료Cu개성적BiVO4최화제병진행료표정,용우모의함분폐수적강해。고찰료최화제제비조건화광최화강해공예대해양품재가견광하최화양화거제분분효과적영향。결과표명,재중성조건하제비적최화제활성최고,재공기통입량위200 mL/min、최화제가입량위1 mg/L시,반응180 min후,대함분폐수적거제솔최고체92.4%。채용X사선연사화자외-가견광보등표정수단대최화제적결구성질진행료표정。결과표명,Cu적복합사가견광흡수대발생홍이,흡수강도야유교대폭도적제고,당pH=7시,Cu-BiVO4적단사정상특정봉적강도최강,정형교완정。
Cu metal modified BiVO4 was prepared by hydrothermal method, which was investigated by photocatalytic oxidation of phenol-containing wastewater. The effects of pH of catalysts prepared and photocatalytic reaction techniques on the removal performance of phenol were studied. The results showed that the degradation rate of Cu-BiVO4 to phenol in wastewater was up to 92.4%, under the condition as, 7 of pH catalysts prepared, 1 mg/L of catalyst dosage, 200 mL/min of air flow, illumination 3 h. The composite photocatalysts were characterized by X-ray diffraction and ultraviolet-visible absorption spectroscopy. The Cu-BiVO4 catalyst has a significant red-shift in the absorption band in visible region, and the absorption intensity increases greatly for the composite catalyst.