Sana Islam , Imran Aslam , Tariq Mahmood , M. Hassan Farooq
{"title":"WO3的易合成。具有高效光催化和电化学性能的水纳米结构","authors":"Sana Islam , Imran Aslam , Tariq Mahmood , M. Hassan Farooq","doi":"10.1016/j.jcrysgro.2024.128017","DOIUrl":null,"url":null,"abstract":"<div><div>WO<sub>3</sub>·H<sub>2</sub>O nanostructures have fascinated momentous consideration due to their distinctive properties such as small bandgaps as compared to WO<sub>3</sub>, tunable morphology, and distinct photocatalytic properties. These nanostructures were successfully fabricated by the hydrothermal method (by varying solvent volume) and characterized by X-ray diffraction (XRD), EDX, and FESEM to analyze the crystallinity, chemical composition, and morphology which indicated the average size of 140–190 nm. The presence of O-W-O and O = W chemical bonds, and O–H stretching vibrations in FTIR spectrum demonstrate the fabrication of WO<sub>3</sub>·H<sub>2</sub>O nanostructures. The UV–Visible spectroscopy and PL study were conducted which presented that the optical bandgaps lies in the range (2.16–2.5 eV) which were beneficial for photocatalytic activity. To assess the photocatalytic response, rhodamine B, methyl orange, reactive orange 16 dyes and additionally industrial wastewater were used. It was noted that the photodegradation efficiency of sample 1 was higher than other samples for all dyes. The percentage degradation for RhB (99.5 %), MO (97.5 %), RO16 (88.7 %), and IW (99.5 %) and the reaction rate constants are RhB (0.0768 min<sup>−1</sup>), MO (0.03991 min<sup>−1</sup>), RO16 (0.02363 min<sup>−1</sup>), and IW (0.0744 min<sup>−1</sup>). The sample 1 have 1.5 times higher photocatalytic properties than all other samples, attributed to its lowest bandgap 2.16 eV, and lower charge carriers recombination rate. Moreover, the electrochemical properties of WO<sub>3</sub>·H<sub>2</sub>O nanostructures were also evaluated presenting a specific capacitance of 1209F g<sup>−1</sup>. This analysis highlights their potential in environmental remediation and supercapacitor applications.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"652 ","pages":"Article 128017"},"PeriodicalIF":1.7000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Facile synthesis of WO3.H2O nanostructures for efficient photocatalytic and electrochemical properties\",\"authors\":\"Sana Islam , Imran Aslam , Tariq Mahmood , M. Hassan Farooq\",\"doi\":\"10.1016/j.jcrysgro.2024.128017\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>WO<sub>3</sub>·H<sub>2</sub>O nanostructures have fascinated momentous consideration due to their distinctive properties such as small bandgaps as compared to WO<sub>3</sub>, tunable morphology, and distinct photocatalytic properties. These nanostructures were successfully fabricated by the hydrothermal method (by varying solvent volume) and characterized by X-ray diffraction (XRD), EDX, and FESEM to analyze the crystallinity, chemical composition, and morphology which indicated the average size of 140–190 nm. The presence of O-W-O and O = W chemical bonds, and O–H stretching vibrations in FTIR spectrum demonstrate the fabrication of WO<sub>3</sub>·H<sub>2</sub>O nanostructures. The UV–Visible spectroscopy and PL study were conducted which presented that the optical bandgaps lies in the range (2.16–2.5 eV) which were beneficial for photocatalytic activity. To assess the photocatalytic response, rhodamine B, methyl orange, reactive orange 16 dyes and additionally industrial wastewater were used. It was noted that the photodegradation efficiency of sample 1 was higher than other samples for all dyes. The percentage degradation for RhB (99.5 %), MO (97.5 %), RO16 (88.7 %), and IW (99.5 %) and the reaction rate constants are RhB (0.0768 min<sup>−1</sup>), MO (0.03991 min<sup>−1</sup>), RO16 (0.02363 min<sup>−1</sup>), and IW (0.0744 min<sup>−1</sup>). The sample 1 have 1.5 times higher photocatalytic properties than all other samples, attributed to its lowest bandgap 2.16 eV, and lower charge carriers recombination rate. Moreover, the electrochemical properties of WO<sub>3</sub>·H<sub>2</sub>O nanostructures were also evaluated presenting a specific capacitance of 1209F g<sup>−1</sup>. This analysis highlights their potential in environmental remediation and supercapacitor applications.</div></div>\",\"PeriodicalId\":353,\"journal\":{\"name\":\"Journal of Crystal Growth\",\"volume\":\"652 \",\"pages\":\"Article 128017\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-11-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Crystal Growth\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S002202482400455X\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Crystal Growth","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S002202482400455X","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
Facile synthesis of WO3.H2O nanostructures for efficient photocatalytic and electrochemical properties
WO3·H2O nanostructures have fascinated momentous consideration due to their distinctive properties such as small bandgaps as compared to WO3, tunable morphology, and distinct photocatalytic properties. These nanostructures were successfully fabricated by the hydrothermal method (by varying solvent volume) and characterized by X-ray diffraction (XRD), EDX, and FESEM to analyze the crystallinity, chemical composition, and morphology which indicated the average size of 140–190 nm. The presence of O-W-O and O = W chemical bonds, and O–H stretching vibrations in FTIR spectrum demonstrate the fabrication of WO3·H2O nanostructures. The UV–Visible spectroscopy and PL study were conducted which presented that the optical bandgaps lies in the range (2.16–2.5 eV) which were beneficial for photocatalytic activity. To assess the photocatalytic response, rhodamine B, methyl orange, reactive orange 16 dyes and additionally industrial wastewater were used. It was noted that the photodegradation efficiency of sample 1 was higher than other samples for all dyes. The percentage degradation for RhB (99.5 %), MO (97.5 %), RO16 (88.7 %), and IW (99.5 %) and the reaction rate constants are RhB (0.0768 min−1), MO (0.03991 min−1), RO16 (0.02363 min−1), and IW (0.0744 min−1). The sample 1 have 1.5 times higher photocatalytic properties than all other samples, attributed to its lowest bandgap 2.16 eV, and lower charge carriers recombination rate. Moreover, the electrochemical properties of WO3·H2O nanostructures were also evaluated presenting a specific capacitance of 1209F g−1. This analysis highlights their potential in environmental remediation and supercapacitor applications.
期刊介绍:
The journal offers a common reference and publication source for workers engaged in research on the experimental and theoretical aspects of crystal growth and its applications, e.g. in devices. Experimental and theoretical contributions are published in the following fields: theory of nucleation and growth, molecular kinetics and transport phenomena, crystallization in viscous media such as polymers and glasses; crystal growth of metals, minerals, semiconductors, superconductors, magnetics, inorganic, organic and biological substances in bulk or as thin films; molecular beam epitaxy, chemical vapor deposition, growth of III-V and II-VI and other semiconductors; characterization of single crystals by physical and chemical methods; apparatus, instrumentation and techniques for crystal growth, and purification methods; multilayer heterostructures and their characterisation with an emphasis on crystal growth and epitaxial aspects of electronic materials. A special feature of the journal is the periodic inclusion of proceedings of symposia and conferences on relevant aspects of crystal growth.