Highly photodegradation of organic dye pollutant RhB using TiO2-modified reduced graphene oxide

Abstract

TiO2-modified reduced graphene oxide (TiO2-rGO) has been studied in one-process step synthesis via the hydrothermal method. In this study, the various concentrations of rGO were investigated and characterized by fourier transform infrared (FTIR), x-ray diffraction (XRD), scanning electron microscope (SEM), surface area analyzer (SAA), thermogravimetric analysis/differential thermal analysis (TGA/DTA), and spectroscopy UV-Vis. In addition, the photodegradation of rhodamine-B was studied by a batch system under visible light irradiation at wavelength 554 nm. The optimum experimental results showed that the presence of rGO in TiO2 nanostructures could improve the specific surface area until 248.58 m2 g− 1 and enhanced the photodegradation efficiency until 70.66% under visible light irradiation. The photocatalyst stability was evaluated for five cycles experiment and the performance have reduced 6.58% efficiency.

Development of photocatalysts based on TiO2 films with embedded Ag nanoparticles

“…), heterojunctions with other semiconductors, and metal ion implantation. [15][16][17][18][19] It has been shown that the addition of metal nanoparticles improves the photocatalytic efficiency under different operating conditions by several possible mechanisms. 12 Different techniques have been considered for the deposition of TiO 2 onto surfaces as thin films 20,21 being the Sol-Gel techniques one of them.…”

“…To improve the photoactivity and photo‐response in the visible region of TiO 2 , different strategies have been used such as surface modification, noble metal deposition, doping with impurity elements, attach photosensitizer species (CdS, WO 3 , etc. ), heterojunctions with other semiconductors, and metal ion implantation 15–19 . It has been shown that the addition of metal nanoparticles improves the photocatalytic efficiency under different operating conditions by several possible mechanisms 12 .…”

Karakteristik Pelapisan Urea dengan Metode Slow Release Fertilizer Menggunakan Stearin-Parafin

“…ke udara dalam bentuk gas amoniak dan berubah ke bentuk lain yang tidak dapat dimanfaatkan oleh tanaman [2]. Jenis pupuk N yang banyak dijumpai di pasaran Indonesia adalah dalam bentuk urea [2]. Penggunaan pupuk urea paling banyak dibandingkan dengan pupuk N yang lain.…”