Photophysical Property and Photocatalytic Activity of New Gd2InSbO7 and Gd2FeSbO7 Compounds under Visible Light Irradiation

Abstract

Gd2InSbO7 and Gd2FeSbO7 were synthesized first, and their structural and photocatalytic properties were studied. The lattice parameters and the band gaps for Gd2InSbO7 and Gd2FeSbO7 were 10.449546 Å, 10.276026 Å, 2.897 eV and 2.151 eV. The photocatalytic degradation of rhodamine B was performed with Gd2InSbO7 and Gd2FeSbO7 under visible light irradiation. Gd2InSbO7 and Gd2FeSbO7 had higher catalytic activity compared with Bi2InTaO7. Gd2FeSbO7 exhibited higher catalytic activity than Gd2InSbO7. The photocatalytic degradation of rhodamine B followed with the first-order reaction kinetics, and the first-order rate constant k was 0.01606, 0.02220 or 0.00329 min−1 with Gd2InSbO7, Gd2FeSbO7 or Bi2InTaO7 as photocatalyst. Complete removal of rhodamine B was observed after visible light irradiation for 225 min or 260 min with Gd2FeSbO7 or Gd2InSbO7 as photocatalyst. The evolution of CO2 was realized, and it indicated continuous mineralization of rhodamine B during the photocatalytic process. The possible photocatalytic degradation pathway of rhodamine B was proposed.

Biochemical Synthesis of Ag/AgCl Nanoparticles for Visible-Light-Driven Photocatalytic Removal of Colored Dyes

“…Rhodamine B (RhB) was a carcinogenic chemical dye and it was often used as a tracer to determine the rate and direction of water flow [28,29,30]. RhB was used as a common modal to evaluate the performance of photocatalysts.…”

Enhanced adsorption property of TiO2 based nanoribbons produced by alkaline hydrothermal process

“…Methyl orange is an azo group with (-N=N-) and sulfonic group on the other side. These types of bonding are associated with high dissociation energy and less reactive (Horikoshi et al, 2003;Luan et al, 2013) compared to the functional groups existing in Rhodamine B.…”

Термодинамика И Кинетика Фотокатализа Для Получения Водорода При Расщеплении Воды

“…Несмотря на вышеуказанные преимущества, применение водородных технологий имеет ряд ограничений. Водород с низкой объемной энергией обычно хранится в виде сжатого газа или жидкости, что означает, что необходим процесс предварительной компрессии [19][20][21]. Для таких процессов требуется энергетическое и экспансивное оборудование, что увеличивает затраты на использование водорода.…”