{"title":"通过伽马辐照合成的 Pt/TiO2 纳米粒子可提高可见光下甲基橙的光催化降解能力","authors":"Vo Thi Thu Nhu , Van-Thuc Nguyen","doi":"10.1016/j.nimb.2024.165560","DOIUrl":null,"url":null,"abstract":"<div><div>This study prepared Pt modification on TiO<sub>2</sub> nanoparticles by radiolysis method using gamma-ray from the Co-60 source. Characteristic properties and morphology of Pt-modified TiO<sub>2</sub> NPs (Pt/TiO<sub>2</sub>) were determined through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM)<em>,</em> energy-dispersive X-ray spectroscopy (EDX),<!--> <!-->high-resolution transmission electron microscopy<!--> <!-->(HRTEM) and band gap energy. The results indicated the existence of Pt<sup>o</sup> on the surface TiO<sub>2</sub>, and the band gap of Pt/TiO<sub>2</sub> catalysts was lower than pure TiO<sub>2</sub>. Photocatalytic degradation methyl orange (MO) 20 ppm of Pt/TiO<sub>2</sub> nanoparticles was investigated under visible light. The TiO<sub>2</sub>-doped 1 %wt Pt sample has the highest MO degradation efficiency; the MO degradation efficiency of the Pt<sub>1.0</sub>/TiO<sub>2</sub> sample was nearly twice that of using pure TiO<sub>2</sub> under visible irradiation for two hours. Besides, the factors of the amount of material used, solution pH and dye concentration, and reusability of Pt/TiO<sub>2</sub> nanoparticles were also investigated.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165560"},"PeriodicalIF":1.4000,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Pt/TiO2 nanoparticles synthesized via gamma irradiation to improve photocatalytic degradation of methyl orange in visible light\",\"authors\":\"Vo Thi Thu Nhu , Van-Thuc Nguyen\",\"doi\":\"10.1016/j.nimb.2024.165560\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study prepared Pt modification on TiO<sub>2</sub> nanoparticles by radiolysis method using gamma-ray from the Co-60 source. Characteristic properties and morphology of Pt-modified TiO<sub>2</sub> NPs (Pt/TiO<sub>2</sub>) were determined through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM)<em>,</em> energy-dispersive X-ray spectroscopy (EDX),<!--> <!-->high-resolution transmission electron microscopy<!--> <!-->(HRTEM) and band gap energy. The results indicated the existence of Pt<sup>o</sup> on the surface TiO<sub>2</sub>, and the band gap of Pt/TiO<sub>2</sub> catalysts was lower than pure TiO<sub>2</sub>. Photocatalytic degradation methyl orange (MO) 20 ppm of Pt/TiO<sub>2</sub> nanoparticles was investigated under visible light. The TiO<sub>2</sub>-doped 1 %wt Pt sample has the highest MO degradation efficiency; the MO degradation efficiency of the Pt<sub>1.0</sub>/TiO<sub>2</sub> sample was nearly twice that of using pure TiO<sub>2</sub> under visible irradiation for two hours. Besides, the factors of the amount of material used, solution pH and dye concentration, and reusability of Pt/TiO<sub>2</sub> nanoparticles were also investigated.</div></div>\",\"PeriodicalId\":19380,\"journal\":{\"name\":\"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms\",\"volume\":\"558 \",\"pages\":\"Article 165560\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2024-11-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0168583X24003306\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"INSTRUMENTS & INSTRUMENTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168583X24003306","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
Pt/TiO2 nanoparticles synthesized via gamma irradiation to improve photocatalytic degradation of methyl orange in visible light
This study prepared Pt modification on TiO2 nanoparticles by radiolysis method using gamma-ray from the Co-60 source. Characteristic properties and morphology of Pt-modified TiO2 NPs (Pt/TiO2) were determined through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), high-resolution transmission electron microscopy (HRTEM) and band gap energy. The results indicated the existence of Pto on the surface TiO2, and the band gap of Pt/TiO2 catalysts was lower than pure TiO2. Photocatalytic degradation methyl orange (MO) 20 ppm of Pt/TiO2 nanoparticles was investigated under visible light. The TiO2-doped 1 %wt Pt sample has the highest MO degradation efficiency; the MO degradation efficiency of the Pt1.0/TiO2 sample was nearly twice that of using pure TiO2 under visible irradiation for two hours. Besides, the factors of the amount of material used, solution pH and dye concentration, and reusability of Pt/TiO2 nanoparticles were also investigated.
期刊介绍：
Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.
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