Photocatalytic Degradation of DIPA Using Bimetallic Cu-Ni/TiO₂Photocatalyst under Visible Light Irradiation

Abstract

Bimetallic Cu-Ni/TiO2 photocatalysts were synthesized using wet impregnation (WI) method with TiO2 (Degussa-P25) as support and calcined at different temperatures (180, 200, and 300°C) for the photodegradation of DIPA under visible light. The photocatalysts were characterized using TGA, FESEM, UV-Vis diffuse reflectance spectroscopy, fourier transform infrared spectroscopy (FTIR) and temperature programmed reduction (TPR). The results from the photodegradation experiments revealed that the Cu-Ni/TiO2 photocatalysts exhibited much higher photocatalytic activities compared to bare TiO2. It was found that photocatalyst calcined at 200°C had the highest photocatalyst activities with highest chemical oxygen demand (COD) removal (86.82%). According to the structural and surface analysis, the enhanced photocatalytic activity could be attributed to its strong absorption into the visible region and high metal dispersion.

Enhanced Mechanical and Thermal Properties of Stereolithography 3D Printed Structures by the Effects of Incorporated Controllably Annealed Anatase TiO2 Nanoparticles

“…The better dispersion was achieved by the surface treatment of anatase TNPs with the assistance of KH570 surfactant. In the FTIR patterns, the peaks around 678.82 cm −1 corresponded to the metal oxide peak (here, anatase TiO2 nanoparticles), which was present in every sample containing ANT800 [79]. It assured that the presence of anatase TNPs was significant in the solutions.…”

“…Nanomaterials 2020, 10, 79 4 of 24 this solution was dehydrated at 80 °C until a dry powder was achieved. The dry whitish powder was annealed at 400 °C with a heating rate of 5 °C/min for 30 min.…”

“…Nanomaterials 2020, 10, 79 6 of 24 frequency range of 1 Hz. The storage modulus and tangent delta (tan δ) for all the samples were recorded on the concerning temperature.…”

Solid-Phase Photocatalytic Degradation of Polyvinyl Borate

“…Characteristic absorption peaks of PVB, the stretching vibrations of B-O-C bonds, were also observed on the spectrum of the composite (Figure 1b). Different from the spectrum of pure PVB, there was a broad absorption band between 600 cm −1 and 900 cm −1 , which was attributed to Ti-O stretching vibrations ( Figure 1b) [15]. This absorption band proved the presence of TiO 2 nanoparticles in PVB matrix.…”

CeO2-TiO2 Photocatalyst: Ionic Liquid-Mediated Synthesis, Characterization, and Performance for Diisopropanolamine Visible Light Degradation

“…Bimetallic catalyst was used as well to study the alkanolamine degradation. This includes Cu-Fe-TiO2 and CuNi/TiO2 photocatalyst study on DIPA degradation under visible light [2,4]. TiO2 has been widely employed as an important ingredient in industrial products such as paints, polymer products, and textile industry.…”