Enhanced synthesis of plasmonic mesoporous Ag-doped ZnAl2O4 nanophotocatalyst via synergistic ultrasound and microwave irradiation for efficient organic dye degradation

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-03-21 DOI:10.1016/j.apt.2025.104855

Azadeh Talati, Mohammad Haghighi, Iman Ghasemi

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引用次数: 0

Abstract

Highly mesoporous Ag-ZnAl₂O₄ nanocomposites with different silver contents were fabricated by improved combustion method. To this purpose, ultrasound and microwave irradiation aided the conventional method and activated charcoal template was used. The XRD, FESEM, EDX, TEM, BET-BJH, PL, DRS, and pH_pzc techniques were employed to analyze the characteristics of the nanophotocatalysts in their as-prepared state. The samples were assessed for their photocatalytic efficiency in degrading various dyes when exposed to simulated sunlight. Sonicated Ag-ZnAl₂O₄ with 5 wt% of Ag (Ag(5 %)-ZnAl₂O₄(U)) showed the highest photocatalytic performance, of which its reaction rate constant was 2 and 1.8 times greater than that of pure ZnAl₂O₄ and unsonicated sample, respectively. This enhanced degradation efficiency are mainly due to more generation of charge carriers, minimized recombination of electron-hole pairs and increased adsorption capacity over the nanocomposite. Ag(5%)-ZnAl₂O₄(U) displayed excellent reusability even after six runs. The post-characterizations were carried out over the used sample. Furthermore, reaction mechanism of dye degradation was presented.

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)