绿色SBA-15 Fenton催化剂高效降解靛蓝胭脂红

IF 0.6 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Chiang Mai Journal of Science Pub Date : 2022-09-30 DOI:10.12982/cmjs.2022.084

Pornpan Namkhang, Paisan Kongkachuichay

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引用次数: 0

摘要

以新型可再生硅源玉米堆灰(CSA)为主要原料，合成了绿色介孔SBA-15。将80 wt%的CSA水玻璃溶液与正硅酸四乙酯(TEOS)溶液混合，经水热法制备介孔SBA- 15。随后，将金属铁掺入制备的SBA-15中，作为Fenton催化剂在不同条件下降解靛蓝胭脂红(IC)。考察了初始pH、H2O2浓度、Fe含量、反应温度等参数对Fenton工艺的影响。结果表明，Fe2O3/80CSBA不仅在较宽的pH范围内(酸性和碱性条件下)表现出良好的活性，而且在室温下也表现出良好的活性。在最佳条件下，10 min内IC去除率可达98%。此外，该催化剂具有长期稳定性和较强的抗Fe类浸出能力，而金属的掺入率仅为0.5 wt%。

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Green SBA-15 as a Fenton Catalytic Support for Efficient Degradation of Indigo Carmine

Green mesoporous SBA-15 was synthesized by using corn stack ash (CSA), a new renewable silica source, as the main raw material. 80 wt% sodium silicate solution from CSA was mixed with a tetraethyl orthosilicate (TEOS) solution, and fi nally after a hydrothermal process, mesoporous SBA- 15 was obtained. Subsequently, iron metal was incorporated into the prepared SBA-15 and used as an effi cient Fenton catalyst for degradation of indigo carmine (IC) under various conditions. Effects of various parameters of the Fenton process: initial pH, H2O2 concentration, Fe content, and reaction temperature were studied. It was observed that Fe2O3/80CSBA demonstrated good activity not only for a wide range of pH (both of acidic and basic conditions), but also at room temperature. Using the optimum condition, 98% of IC removal can be reached within 10 min. Moreover, the catalyst exhibited long-term stability and strong resistance to leaching of Fe species, while incorporating metal only 0.5 wt% of metal.

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来源期刊

Chiang Mai Journal of Science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.00

自引率

25.00%

发文量

103

审稿时长

3 months

期刊介绍： The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.