Visible Light-Driven Photocatalytic Degradation of Organic Dyes using Graphene Oxide and Titanium Dioxide (TiO2-GO) Heterojunction

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-03-01 DOI:10.1007/s11270-025-07836-z

Hossein Jabbar Abdullah Al-ogeily, Seyed Reza Shabanian, Ghasem Dashtpeyma

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Abstract

Water is the main source required for the survival of humans, animals and plants that has been contaminated by humans with various and dangerous pollutants such as dyes. This study focuses on the photocatalytic method for the purification of wastewater containing dyes. The TiO₂ photocatalyst was modified with graphene oxide (GO) nanoparticles to examine their properties and evaluates their photocatalytic activity. The crystalline, physicochemical, and photocatalytic properties of the synthesized samples were measured using different analyses like XRD, FT-IR, SEM, EDS-MAP, DLS, UV–Vis DRS and PL. The synthesized photocatalysts were analyzed for the photocatalytic elimination of crystal violet cationic dye under visible irradiation. The outcome indicated that the bandgap of titanium dioxide decreased from 3.2 eV to 2.79 eV after composite formation with graphene oxide, which is capable of degrading the dye in the visible light region. The TiO₂/GO nanocomposite showed a 96% performance in the degradation of crystal violet dye in optimal conditions, including a pH of 8, a photocatalyst dosage of 0.02 g, a primary dye concentration of 10 ppm, and a reaction time of 90 min. In addition, it was shown that hydroxyl and superoxide radicals play the main roles and have the primary effect in degradation.

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.