{"title":"Application of green synthesis nanocomposite adsorbents in the adsorption desulfurization of dibenzothiophene in model oil","authors":"Hozan Jalal Saleem , Yousif Mustafa Salih , Luqman Omar Hamasalih , Chawan Saiwan Othman","doi":"10.1080/17415993.2023.2166349","DOIUrl":null,"url":null,"abstract":"<div><p>The nanocomposites have an important role in accelerating the adsorption of sulfur compounds because of their improved chemical and mechanical characteristics. In this study, silver nanoparticles, zinc oxide nanoparticles, and silver/zinc oxide nanoparticles were greenly synthesized and loaded with activated carbon by a successive precipitation method for the adsorptive desulfurization of model oil (dibenzothiophene, DBT, in 85% hexane + 15% toluene). The obtained adsorbents were characterized by using UV-visible spectroscopy, Fourier transmission infrared spectroscopy, a field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Brunauer-Emmett-Teller surface area (S<sub>BET</sub>) analysis to confirm their structure, chemical composition, functional groups present on the adsorbents, and surface area. The adsorption experiments were conducted under optimal conditions, with 0.15 g of adsorbent dosage and a contact time of 1 h at 25 °C, during which the (Ag/ZnONPS-AC) adsorbent removed 99% of dibenzothiophene (250 mg/l). The total order removal performance of DBT of: Ag/ZnONPS-AC > ZnONPS-AC > AgNPS-AC > AC was observed. Kinetic studies revealed that the adsorption process of (Ag/ZnONPS-AC) obeyed pseudo-second-order kinetics and the Langmuir adsorption isotherm model. This study provides a cost-effective adsorbent for the effective desulfurization of model oil.</p></div>","PeriodicalId":17081,"journal":{"name":"Journal of Sulfur Chemistry","volume":"44 4","pages":"Pages 416-431"},"PeriodicalIF":2.1000,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sulfur Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1741599323000120","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
The nanocomposites have an important role in accelerating the adsorption of sulfur compounds because of their improved chemical and mechanical characteristics. In this study, silver nanoparticles, zinc oxide nanoparticles, and silver/zinc oxide nanoparticles were greenly synthesized and loaded with activated carbon by a successive precipitation method for the adsorptive desulfurization of model oil (dibenzothiophene, DBT, in 85% hexane + 15% toluene). The obtained adsorbents were characterized by using UV-visible spectroscopy, Fourier transmission infrared spectroscopy, a field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Brunauer-Emmett-Teller surface area (SBET) analysis to confirm their structure, chemical composition, functional groups present on the adsorbents, and surface area. The adsorption experiments were conducted under optimal conditions, with 0.15 g of adsorbent dosage and a contact time of 1 h at 25 °C, during which the (Ag/ZnONPS-AC) adsorbent removed 99% of dibenzothiophene (250 mg/l). The total order removal performance of DBT of: Ag/ZnONPS-AC > ZnONPS-AC > AgNPS-AC > AC was observed. Kinetic studies revealed that the adsorption process of (Ag/ZnONPS-AC) obeyed pseudo-second-order kinetics and the Langmuir adsorption isotherm model. This study provides a cost-effective adsorbent for the effective desulfurization of model oil.
期刊介绍：
The Journal of Sulfur Chemistry is an international journal for the dissemination of scientific results in the rapidly expanding realm of sulfur chemistry. The journal publishes high quality reviews, full papers and communications in the following areas: organic and inorganic chemistry, industrial chemistry, materials and polymer chemistry, biological chemistry and interdisciplinary studies directly related to sulfur science.
Papers outlining theoretical, physical, mechanistic or synthetic studies pertaining to sulfur chemistry are welcome. Hence the target audience is made up of academic and industrial chemists with peripheral or focused interests in sulfur chemistry. Manuscripts that truly define the aims of the journal include, but are not limited to, those that offer: a) innovative use of sulfur reagents; b) new synthetic approaches to sulfur-containing biomolecules, materials or organic and organometallic compounds; c) theoretical and physical studies that facilitate the understanding of sulfur structure, bonding or reactivity; d) catalytic, selective, synthetically useful or noteworthy transformations of sulfur containing molecules; e) industrial applications of sulfur chemistry; f) unique sulfur atom or molecule involvement in interfacial phenomena; g) descriptions of solid phase or combinatorial methods involving sulfur containing substrates. Submissions pertaining to related atoms such as selenium and tellurium are also welcome. Articles offering routine heterocycle formation through established reactions of sulfur containing substrates are outside the scope of the journal.
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