V. Ruiz-Santoyo, S. García-Carvajal, M. C. Arenas-Arrocena
{"title":"用简单水热法制备的Bi2O3-TiO2纳米复合材料光催化脱除合成染料","authors":"V. Ruiz-Santoyo, S. García-Carvajal, M. C. Arenas-Arrocena","doi":"10.1007/s11051-024-06207-9","DOIUrl":null,"url":null,"abstract":"<div><p>This study describes the preparation of TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> photocatalysts with different TiO<sub>2</sub> contents, synthesized via an in situ hydrothermal method. The powder samples were characterized by XRD, SEM, TEM, FTIR–ATR, UV–Vis, XPS, and N₂ physisorption analysis. The photocatalytic activity of the TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> was studied for the removal of methyl orange (MO) and methylene blue (MB) under different reaction conditions. The TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> photocatalysts exhibited superior photocatalytic activity compared to the pristine samples of TiO<sub>2</sub> and Bi<sub>2</sub>O<sub>3</sub>. The BiT16 sample achieved degradation rates of approximately 93.9% and 98.2% for MO and MB, respectively, within 120 min of reaction at 30 ppm. These results are attributed to the band gap values, differences in textural features, TiO<sub>2</sub> content, and the reduction in the recombination process of e⁻/h⁺ pairs in the Bi<sub>2</sub>O<sub>3</sub>–TiO<sub>2</sub> composites. Reaction kinetics were determined using the Langmuir–Hinshelwood mechanism, and during the third photoreaction cycle, the TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> (BiT16) achieved photocatalytic degradation rates of 65.6% for MO and 70.5% for MB.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"27 2","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11051-024-06207-9.pdf","citationCount":"0","resultStr":"{\"title\":\"Photocatalytic removal of synthetic dyes using Bi2O3–TiO2 nanocomposites obtained by simple hydrothermal route\",\"authors\":\"V. Ruiz-Santoyo, S. García-Carvajal, M. C. Arenas-Arrocena\",\"doi\":\"10.1007/s11051-024-06207-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study describes the preparation of TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> photocatalysts with different TiO<sub>2</sub> contents, synthesized via an in situ hydrothermal method. The powder samples were characterized by XRD, SEM, TEM, FTIR–ATR, UV–Vis, XPS, and N₂ physisorption analysis. The photocatalytic activity of the TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> was studied for the removal of methyl orange (MO) and methylene blue (MB) under different reaction conditions. The TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> photocatalysts exhibited superior photocatalytic activity compared to the pristine samples of TiO<sub>2</sub> and Bi<sub>2</sub>O<sub>3</sub>. The BiT16 sample achieved degradation rates of approximately 93.9% and 98.2% for MO and MB, respectively, within 120 min of reaction at 30 ppm. These results are attributed to the band gap values, differences in textural features, TiO<sub>2</sub> content, and the reduction in the recombination process of e⁻/h⁺ pairs in the Bi<sub>2</sub>O<sub>3</sub>–TiO<sub>2</sub> composites. Reaction kinetics were determined using the Langmuir–Hinshelwood mechanism, and during the third photoreaction cycle, the TiO<sub>2</sub>-modified Bi<sub>2</sub>O<sub>3</sub> (BiT16) achieved photocatalytic degradation rates of 65.6% for MO and 70.5% for MB.</p></div>\",\"PeriodicalId\":653,\"journal\":{\"name\":\"Journal of Nanoparticle Research\",\"volume\":\"27 2\",\"pages\":\"\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-01-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s11051-024-06207-9.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Nanoparticle Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11051-024-06207-9\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanoparticle Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11051-024-06207-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Photocatalytic removal of synthetic dyes using Bi2O3–TiO2 nanocomposites obtained by simple hydrothermal route
This study describes the preparation of TiO2-modified Bi2O3 photocatalysts with different TiO2 contents, synthesized via an in situ hydrothermal method. The powder samples were characterized by XRD, SEM, TEM, FTIR–ATR, UV–Vis, XPS, and N₂ physisorption analysis. The photocatalytic activity of the TiO2-modified Bi2O3 was studied for the removal of methyl orange (MO) and methylene blue (MB) under different reaction conditions. The TiO2-modified Bi2O3 photocatalysts exhibited superior photocatalytic activity compared to the pristine samples of TiO2 and Bi2O3. The BiT16 sample achieved degradation rates of approximately 93.9% and 98.2% for MO and MB, respectively, within 120 min of reaction at 30 ppm. These results are attributed to the band gap values, differences in textural features, TiO2 content, and the reduction in the recombination process of e⁻/h⁺ pairs in the Bi2O3–TiO2 composites. Reaction kinetics were determined using the Langmuir–Hinshelwood mechanism, and during the third photoreaction cycle, the TiO2-modified Bi2O3 (BiT16) achieved photocatalytic degradation rates of 65.6% for MO and 70.5% for MB.
期刊介绍：
The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size.
Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology.
The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.
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