A. E. Burakov, T. S. Kuznetsova, I. V. Burakova, O. A. Ananyeva, E. S. Mkrtchyan, T. P. Dyachkova, A. G. Tkachev
{"title":"基于可再生资源的水热合成高效碳吸附剂","authors":"A. E. Burakov, T. S. Kuznetsova, I. V. Burakova, O. A. Ananyeva, E. S. Mkrtchyan, T. P. Dyachkova, A. G. Tkachev","doi":"10.1134/S106378502370013X","DOIUrl":null,"url":null,"abstract":"<p>A technique of synthesis of new sorption materials by hydrothermal carbonization of sunflower meal (HTS) with the addition of graphene oxide (GO) and subsequent carbonization (C) has been developed. To assess morphological and phase changes during carbonization, the materials have been characterized by scanning electron microscopy and IR spectroscopy. According to the results obtained, carbonization facilitates the development of latent porosity and reduces the amount of oxygen-containing and alkyl groups. Kinetic sorption studies have also been carried out by the example of extraction of Pb<sup>2+</sup> ions and organic dye molecules (methylene blue (MB)). The experimental results show that the adsorption capacities of the HTS, HTS/C, HTS/GO, and HTS/GO/C composites were 82.9, 108.6, 168.9, and 148.3 mg/g, respectively, for extraction of Pb<sup>2+</sup> ions and 1481.8, 1601.1, 1920.3, and 2283 mg/g, respectively, for extraction of MB molecules. It is established that, during the absorption of MB molecules, carbonization affects significantly the contact time. Carbonized samples exhibit high sorption activity, which results in the equilibrium contact time of 15 min (this value is 60 min for noncarbonized samples). The equilibrium time during the adsorption of Pb<sup>2+</sup> ions is 60 min for all samples. The adsorption kinetics is described using the following models: the pseudo-first-order model, pseudo-second-order model, Elovich model, and intraparticle diffusion model. It is found that the adsorption process is limited by the chemical-exchange reaction and runs in a mixed-diffusion mode.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydrothermal Synthesis of High-Efficiency Carbon Sorbent Based on Renewable Resources\",\"authors\":\"A. E. Burakov, T. S. Kuznetsova, I. V. Burakova, O. A. Ananyeva, E. S. Mkrtchyan, T. P. Dyachkova, A. G. Tkachev\",\"doi\":\"10.1134/S106378502370013X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A technique of synthesis of new sorption materials by hydrothermal carbonization of sunflower meal (HTS) with the addition of graphene oxide (GO) and subsequent carbonization (C) has been developed. To assess morphological and phase changes during carbonization, the materials have been characterized by scanning electron microscopy and IR spectroscopy. According to the results obtained, carbonization facilitates the development of latent porosity and reduces the amount of oxygen-containing and alkyl groups. Kinetic sorption studies have also been carried out by the example of extraction of Pb<sup>2+</sup> ions and organic dye molecules (methylene blue (MB)). The experimental results show that the adsorption capacities of the HTS, HTS/C, HTS/GO, and HTS/GO/C composites were 82.9, 108.6, 168.9, and 148.3 mg/g, respectively, for extraction of Pb<sup>2+</sup> ions and 1481.8, 1601.1, 1920.3, and 2283 mg/g, respectively, for extraction of MB molecules. It is established that, during the absorption of MB molecules, carbonization affects significantly the contact time. Carbonized samples exhibit high sorption activity, which results in the equilibrium contact time of 15 min (this value is 60 min for noncarbonized samples). The equilibrium time during the adsorption of Pb<sup>2+</sup> ions is 60 min for all samples. The adsorption kinetics is described using the following models: the pseudo-first-order model, pseudo-second-order model, Elovich model, and intraparticle diffusion model. It is found that the adsorption process is limited by the chemical-exchange reaction and runs in a mixed-diffusion mode.</p>\",\"PeriodicalId\":784,\"journal\":{\"name\":\"Technical Physics Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2023-12-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Technical Physics Letters\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S106378502370013X\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Technical Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S106378502370013X","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
Hydrothermal Synthesis of High-Efficiency Carbon Sorbent Based on Renewable Resources
A technique of synthesis of new sorption materials by hydrothermal carbonization of sunflower meal (HTS) with the addition of graphene oxide (GO) and subsequent carbonization (C) has been developed. To assess morphological and phase changes during carbonization, the materials have been characterized by scanning electron microscopy and IR spectroscopy. According to the results obtained, carbonization facilitates the development of latent porosity and reduces the amount of oxygen-containing and alkyl groups. Kinetic sorption studies have also been carried out by the example of extraction of Pb2+ ions and organic dye molecules (methylene blue (MB)). The experimental results show that the adsorption capacities of the HTS, HTS/C, HTS/GO, and HTS/GO/C composites were 82.9, 108.6, 168.9, and 148.3 mg/g, respectively, for extraction of Pb2+ ions and 1481.8, 1601.1, 1920.3, and 2283 mg/g, respectively, for extraction of MB molecules. It is established that, during the absorption of MB molecules, carbonization affects significantly the contact time. Carbonized samples exhibit high sorption activity, which results in the equilibrium contact time of 15 min (this value is 60 min for noncarbonized samples). The equilibrium time during the adsorption of Pb2+ ions is 60 min for all samples. The adsorption kinetics is described using the following models: the pseudo-first-order model, pseudo-second-order model, Elovich model, and intraparticle diffusion model. It is found that the adsorption process is limited by the chemical-exchange reaction and runs in a mixed-diffusion mode.
期刊介绍:
Technical Physics Letters is a companion journal to Technical Physics and offers rapid publication of developments in theoretical and experimental physics with potential technological applications. Recent emphasis has included many papers on gas lasers and on lasing in semiconductors, as well as many reports on high Tc superconductivity. The excellent coverage of plasma physics seen in the parent journal, Technical Physics, is also present here with quick communication of developments in theoretical and experimental work in all fields with probable technical applications. Topics covered are basic and applied physics; plasma physics; solid state physics; physical electronics; accelerators; microwave electron devices; holography.