Visible-light-driven BiOI and GO/BiOI photocatalysts for organic pollutants degradation and hydrogen production using low power sources

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-05-15 DOI:10.3389/fnano.2024.1388458

Socorro Oros-Ruiz, Hiram Joazet Ojeda-Galván, Mildred Quintana, Roberto Leyva-Ramos, Adriana Isabel Moral-Rodríguez, Esmeralda Mendoza-Mendoza

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Abstract

BiOI and (3 wt%)GO/BiOI visible-light-driven photocatalysts were obtained by a one-pot solvothermal method and successfully applied to the degradation of single and binary dye solutions of rhodamine B (RhB) and methylene blue (MB) and H2 production using very low-power sources. The GO/BiOI with hierarchical flower morphologies exhibited the highest activity, achieving RhB and MB photodegradation percentages (%Xdye) of 100% and 80%, respectively, in 240 min employing a simple 19 W white LED array. Furthermore, GO/BiOI dosage and RhB initial concentration play an essential role in dye degradation, and scavenger assays confirmed that holes and superoxides are the main species causing RhB oxidation. TOC analysis determined an efficiency of 70%, and after three uses, the GO/BiOI attained a %XRhB of 84%. The H2 evolution was performed under 2 W UV light, yielding 323.25 μmol/h∙g of H2 for BiOI, and the addition of GO nanosheets increased the photoactivity of GO/BiOI up to 63% (509.61 μmol/h∙g). The catalytic activity of GO/BiOI is superior to values reported in the literature considering nominal power consumption (kWh) vs. efficiency of RhB degradation or H2 production.

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利用可见光驱动的 BiOI 和 GO/BiOI 光催化剂，使用低功率源降解有机污染物和制氢

通过单锅溶热法获得了 BiOI 和（3 wt%）GO/BiOI 可见光驱动光催化剂，并成功地将其应用于罗丹明 B（RhB）和亚甲基蓝（MB）的单一和二元染料溶液的降解以及使用极低功率源产生 H2。具有分层花朵形态的 GO/BiOI 表现出最高的活性，在使用简单的 19 W 白光 LED 阵列的 240 分钟内，RhB 和 MB 的光降解率（%Xdye）分别达到 100%和 80%。此外，GO/BiOI 的用量和 RhB 的初始浓度在染料降解中起着至关重要的作用，清除剂测定证实，空穴和超氧化物是导致 RhB 氧化的主要物种。TOC 分析确定其效率为 70%，经过三次使用后，GO/BiOI 的氧化还原率达到 84%。在 2 W 紫外光下进行 H2 演化，BiOI 产生 323.25 μmol/h∙g H2，加入 GO 纳米片后，GO/BiOI 的光活性提高了 63%（509.61 μmol/h∙g）。考虑到名义功耗（千瓦时）与 RhB 降解或 H2 生产效率的关系，GO/BiOI 的催化活性优于文献报道的值。

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.