Synthesis, characterization, and photocatalytic application of Pd/ZrO2 and Pt/ZrO2

Abstract

Zirconia-supported palladium (Pd/ZrO 2 ) and Zirconia-supported platinum (Pt/ZrO 2 ) nanoparticles (NPs) are synthesized from their precursors via impregnation technique. The Pd/ZrO 2 and Pt/ZrO 2 NPs were analyzed via SEM and EDX, while the study of indigo disulfonate dye degradation was carried out by UV/VIS spectrophotometer. The SEM micrographs illustrated that the Pd and Pt NPs were well placed on ZrO 2 surface. The Pd/ZrO 2 and Pt/ZrO 2 NPs were also employed as photocatalysts for the photodegradation of indigo disulfonate in an aqueous medium under UV-light irradiation. The photodegradation study presented that Pd/ZrO 2 and Pt/ZrO 2 NPs degraded 96 and 94% of indigo disulfonate in 14 h, respectively. The effect of pH of medium and catalyst dosage and efficiency of recovered Pd/ZrO 2 and Pt/ZrO 2 NPs on the photocatalytic degradation were also studied. It was also found that the maximum degradation of dye was found at pH 10 (95-97%) and at 0.02 g weight (40.28%).Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Experimental and Kinetic Study of the Catalytic Behavior of Sulfate-Treated Nanostructured Bifunctional Zirconium Oxide Catalysts in n-Heptane Hydroisomerization Reactions

“…The diameters of the parent ZrO 2 , 0.5% Pt/ZrO 2 , and 1% Pt/ZrO 2 crystals were found to be on the order of 33 nm with sub-cubic shaped particles. According to the published literature [37,38], platinum metal is formed on the surface of the ZrO 2 catalyst, either in the form of agglomerates at some points or dispersed at other points. In contrast, the measured diameters of the parent SZrO 2 crystals, 0.5% Pt/SZrO 2 , and 1% Pt/SZrO 2 crystals exhibited modest differences, which were around 27 nm.…”

Synthesis, characterization, and photocatalytic application of V/ZnO-ZrO₂

“…Tuy nhiên, với năng lượng vùng cấm lớn (ZnO có Eg = 3,37 eV và ZrO2 có Eg = 5,0 -5,5 eV), năng lượng hoạt hóa quang xúc tác của ZnO và ZrO2 nằm trong vùng tử ngoại [1][2][3][4][5][6][7]. Các nghiên cứu đã chỉ ra rằng việc pha tạp các nguyên tố kim loại hoặc phi kim (N, S, V, Fe, Cu…) vào ZnO hoặc ZrO2 đã tạo ra các khoảng trống oxy (VO) trong mạng tinh thể ZnO hoặc ZrO2 làm giảm năng lượng vùng cấm, dịch chuyển vùng hấp thụ về vùng khả kiến và tăng khả năng quang xúc tác [5][6][7][8][9][10]. Bên cạnh việc pha tạp các nguyên tố khác vào ZnO hoặc ZrO2, các nghiên cứu gần đây cho thấy hệ oxit hỗn hợp ZnO-ZrO2 có kích thước nanomet và có khả năng xúc tác tốt hơn so với từng oxit riêng lẻ [1][2][3][4].…”

Unraveling the effect of Cu doping on the structural and morphological properties and photocatalytic activity of ZrO2

“…The scientific research community has employed a variety of methods to purge water of organic and inorganic contaminants, like bio-degradation [ 7 ], membranes process [ 8 ], ultrafiltration [ 9 ], coagulation [ 10 ], chlorination, ion exchange, advanced oxidation processes (AOP) [ 11 ], reverse osmosis [ 12 ], and so on. One of the most crucial methods is photocatalysis, which can entirely degrade dangerous pollutants to H 2 O and CO 2 .…”