Hala Nezzal, Saâd Rahmane, Elhachmi Guettaf Temam, Mohammed Al-Abri, Htet Htet Kyaw, Brahim Gasmi, Mohammed Althamthami, Hachemi Ben Temam, Jinguang Hu
{"title":"在二氧化钛(TiO2)基底上光沉积用于(P-N)异质结应用的氧化银(AgO)薄膜:考虑污染程度","authors":"Hala Nezzal, Saâd Rahmane, Elhachmi Guettaf Temam, Mohammed Al-Abri, Htet Htet Kyaw, Brahim Gasmi, Mohammed Althamthami, Hachemi Ben Temam, Jinguang Hu","doi":"10.1016/j.jallcom.2024.177331","DOIUrl":null,"url":null,"abstract":"This study explored the development of photocatalytic heterostructures via the P-N junction formation between TiO<sub>2</sub> and AgO. TiO<sub>2</sub> thin films were fabricated on glass substrates through dip coating. Subsequently, photodeposition of AgO was achieved under sunlight irradiation using varying AgNO<sub>3</sub> concentrations (0.5-2.5<!-- --> <!-- -->g/L). The films were characterized using XRD, SEM, EDX, UV-vis, and water droplet tests. Samples with concentrations below 2<!-- --> <!-- -->g/L uniquely exhibited the anatase phase, while a significant prominence of AgO was observed in the film prepared with a 2<!-- --> <!-- -->g/L AgNO<sub>3</sub> concentration. Silver nitrate contamination loads had a significant impact on the particle size and the overall morphological characteristics of the heterojunctions. The band gap values were 3.52<!-- --> <!-- -->eV for the anatase substrate, whereas the band gaps of the photodeposited films decreased from 2.44 to 1.98<!-- --> <!-- -->eV. Despite all films being hydrophilic, a rise in water droplet contact angle was observed in the heterojunctions compared to the pure TiO<sub>2</sub>. Photodegradation of methylene blue under sunlight irradiation demonstrated exceptional efficiency (>90%) for the 2<!-- --> <!-- -->g/L AgNO<sub>3</sub> heterojunction in 6<!-- --> <!-- -->hours, maintaining high photocatalytic activity over multiple cycles (>77%). This same configuration achieved a 50% degradation of amoxicillin within 2<!-- --> <!-- -->hours. This investigation addresses water contamination issues while offering a straightforward production method for efficient P-N junction co-catalysts.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photo-deposition of AgO thin films on TiO2 substrate for (P-N) hetero-junction applications: Considering the degree of contamination\",\"authors\":\"Hala Nezzal, Saâd Rahmane, Elhachmi Guettaf Temam, Mohammed Al-Abri, Htet Htet Kyaw, Brahim Gasmi, Mohammed Althamthami, Hachemi Ben Temam, Jinguang Hu\",\"doi\":\"10.1016/j.jallcom.2024.177331\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study explored the development of photocatalytic heterostructures via the P-N junction formation between TiO<sub>2</sub> and AgO. TiO<sub>2</sub> thin films were fabricated on glass substrates through dip coating. Subsequently, photodeposition of AgO was achieved under sunlight irradiation using varying AgNO<sub>3</sub> concentrations (0.5-2.5<!-- --> <!-- -->g/L). The films were characterized using XRD, SEM, EDX, UV-vis, and water droplet tests. Samples with concentrations below 2<!-- --> <!-- -->g/L uniquely exhibited the anatase phase, while a significant prominence of AgO was observed in the film prepared with a 2<!-- --> <!-- -->g/L AgNO<sub>3</sub> concentration. Silver nitrate contamination loads had a significant impact on the particle size and the overall morphological characteristics of the heterojunctions. The band gap values were 3.52<!-- --> <!-- -->eV for the anatase substrate, whereas the band gaps of the photodeposited films decreased from 2.44 to 1.98<!-- --> <!-- -->eV. Despite all films being hydrophilic, a rise in water droplet contact angle was observed in the heterojunctions compared to the pure TiO<sub>2</sub>. Photodegradation of methylene blue under sunlight irradiation demonstrated exceptional efficiency (>90%) for the 2<!-- --> <!-- -->g/L AgNO<sub>3</sub> heterojunction in 6<!-- --> <!-- -->hours, maintaining high photocatalytic activity over multiple cycles (>77%). This same configuration achieved a 50% degradation of amoxicillin within 2<!-- --> <!-- -->hours. This investigation addresses water contamination issues while offering a straightforward production method for efficient P-N junction co-catalysts.\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jallcom.2024.177331\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2024.177331","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Photo-deposition of AgO thin films on TiO2 substrate for (P-N) hetero-junction applications: Considering the degree of contamination
This study explored the development of photocatalytic heterostructures via the P-N junction formation between TiO2 and AgO. TiO2 thin films were fabricated on glass substrates through dip coating. Subsequently, photodeposition of AgO was achieved under sunlight irradiation using varying AgNO3 concentrations (0.5-2.5 g/L). The films were characterized using XRD, SEM, EDX, UV-vis, and water droplet tests. Samples with concentrations below 2 g/L uniquely exhibited the anatase phase, while a significant prominence of AgO was observed in the film prepared with a 2 g/L AgNO3 concentration. Silver nitrate contamination loads had a significant impact on the particle size and the overall morphological characteristics of the heterojunctions. The band gap values were 3.52 eV for the anatase substrate, whereas the band gaps of the photodeposited films decreased from 2.44 to 1.98 eV. Despite all films being hydrophilic, a rise in water droplet contact angle was observed in the heterojunctions compared to the pure TiO2. Photodegradation of methylene blue under sunlight irradiation demonstrated exceptional efficiency (>90%) for the 2 g/L AgNO3 heterojunction in 6 hours, maintaining high photocatalytic activity over multiple cycles (>77%). This same configuration achieved a 50% degradation of amoxicillin within 2 hours. This investigation addresses water contamination issues while offering a straightforward production method for efficient P-N junction co-catalysts.
期刊介绍:
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.