CAJ | 학술논문

结合回流法和原位沉淀法成功制备磷酸银/矾酸铋(Ag3PO4/BiVO4)复合光催化剂。通过X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、能量色散X射线光谱(EDS)、紫外-可见漫反射光谱(UV-Vis DRS)及光致发光(PL)光谱对制备样品进行表征。 XRD和FESEM结果表明成功制备Ag3PO4/BiVO4复合光催化剂。采用节能发光二极管灯(LED)作为可见光光源，在低消耗光催化系统中评价制备样品可见光催化降解染料的活性。当Ag3PO4和BiVO4的组成摩尔比为1：3时，复合Ag3PO4/BiVO4光催化剂呈现出高于纯相Ag3PO4的催化活性，可减少Ag3PO4的使用量。 Ag3PO4/BiVO4复合光催化剂在中性溶液中表现出高活性，同时证实其对阳离子染料的光催化降解效果强于阴离子染料。在Ag3PO4/BiVO4系统中，超氧自由基和空穴是主要的活性物种。经过三次循环利用， Ag3PO4/BiVO4复合催化剂的可见光催化活性表现出不同程度的降低，归因于降解过程中产生金属银。
결합회류법화원위침정법성공제비린산은/반산필(Ag3PO4/BiVO4)복합광최화제。통과X사선연사(XRD)、장발사소묘전자현미경(FESEM)、능량색산X사선광보(EDS)、자외-가견만반사광보(UV-Vis DRS)급광치발광(PL)광보대제비양품진행표정。 XRD화FESEM결과표명성공제비Ag3PO4/BiVO4복합광최화제。채용절능발광이겁관등(LED)작위가견광광원，재저소모광최화계통중평개제비양품가견광최화강해염료적활성。당Ag3PO4화BiVO4적조성마이비위1：3시，복합Ag3PO4/BiVO4광최화제정현출고우순상Ag3PO4적최화활성，가감소Ag3PO4적사용량。 Ag3PO4/BiVO4복합광최화제재중성용액중표현출고활성，동시증실기대양리자염료적광최화강해효과강우음리자염료。재Ag3PO4/BiVO4계통중，초양자유기화공혈시주요적활성물충。경과삼차순배이용， Ag3PO4/BiVO4복합최화제적가견광최화활성표현출불동정도적강저，귀인우강해과정중산생금속은。
Silver phosphate/bismuth vanadate (Ag3PO4/BiVO4) composite photocatalysts were successful y synthesized by coupling a reflux method with an in situ precipitation route. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), UV-Vis diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy were used to characterize the as-prepared products. The XRD and FESEM results showed that Ag3PO4/BiVO4 composite photocatalysts were successful y obtained. An energy-efficient light emitting diode lamp was used as the visible light source, and the photocatalytic performances of the as-synthesized products were evaluated for dye degradation in a low-cost photocatalytic system. The Ag3PO4/BiVO4 composite with a Ag3PO4:BiVO4 molar ratio of 1:3 exhibited much higher photocatalytic activity than pure Ag3PO4 catalyst, resulting in decreased use of Ag3PO4. The Ag3PO4/BiVO4 composite photocatalyst showed the best photoactivity in neutral solution and had a higher photodegradation rate for cationic dyes than anionic dyes. The superoxide radicals (O?2?) and holes (h+) were considered to be the main active species in the Ag3PO4/BiVO4 system. The photocatalytic activity of the Ag3PO4/BiVO4 composite photocatalyst decreased to different degrees after three cycles because of the production of metal ic silver.