Enhanced selective adsorption and photocatalytic of Ag/Bi2O3 heterostructures modified up-conversion nanoparticles

Enhanced selective adsorption and photocatalytic of Ag/Bi2O3 heterostructures modified up-conversion nanoparticles

Bibliographische Detailangaben
Parent link:Journal of Environmental Chemical Engineering
Vol. 10, iss. 1.— 2022.— [107107, 9 p.]
Körperschaft: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий
Weitere Verfasser: Zhao Shengzhe, Yang Yi, Lu Ran, Wang Yan, Lu Yun, Rodriguez (Rodriges) Contreras R. D. Raul David, Sheremet E. S. Evgeniya Sergeevna, Chen Jinju
Zusammenfassung:Title screen
The degradation of organic pollutant by photocatalytic technology is an emerging and effective approach to purify water resources. Herein, we reported a heterostructure with selective adsorption and photocatalysis for the efficient removal of organic pollutant. The photocatalyst was comprised of up-converting nanoparticle (UCNP) coated with Ag/Bi2O3. The specific crystallinity of Bi2O3 facilitated the selective adsorption of organic molecules with negative polarity, Ag nanoparticles loaded on Bi2O3 promoted the visible light absorption, and the up-conversion property of UCNP turned near-infrared light into ultraviolet and visible light improving further light-harvesting efficiency in the whole solar spectrum. The adsorption process for organic pollutants over Ag/UCNP@Bi2O3 obeyed the pseudo-second-order and the Langmuir isotherm models, and the maximum Langmuir adsorption capacity for tetracycline reached to 717.4 mg/g at pH 7. Meanwhile, the photocatalytic degradation rate of Ag/UCNP@Bi2O3 for tetracycline (100 mg/L) achieved to 0.0037 min−1 under Xenon lamp irradiation after the adsorption equilibrium. This study provided a feasible strategy to develop photocatalysts with efficient adsorption and photocatalytic ability for organic pollutant from water.
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2022
Schlagworte:
электронный ресурс
труды учёных ТПУ
Bi2O3
up-conversion nanoparticles
selective adsorption
photocatalytic degradation
sunlight
наночастицы
селективная адсорбция
фотокатализаторы
деградация
Online-Zugang:https://doi.org/10.1016/j.jece.2021.107107
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668948

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