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负载于Y型沸石上具有光催化性能的钴和镍掺杂二氧化钛纳米颗粒

Co- and Ni-Doped TiO Nanoparticles Supported on Zeolite Y with Photocatalytic Properties.

作者信息

Petcu Gabriela, Papa Florica, Atkinson Irina, Baran Adriana, Apostol Nicoleta G, Petrescu Simona, Richaudeau Lionel, Blin Jean-Luc, Parvulescu Viorica

机构信息

Institute of Physical Chemistry "Ilie Murgulescu", Romanian Academy, 060021 Bucharest, Romania.

National Institute of Materials Physics, Atomiștilor 405A, 077125 Magurele, Romania.

出版信息

Nanomaterials (Basel). 2023 Jul 28;13(15):2200. doi: 10.3390/nano13152200.

DOI:10.3390/nano13152200
PMID:37570517
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10420643/
Abstract

Zeolite Y samples with microporous and hierarchical structures containing Ti-Ni and Ti-Co oxides were obtained as active photocatalysts. Different Ti amounts (5, 10% TiO) were supported, followed by the loading of Ni or Co oxides (5%). X-ray diffraction evidenced the presence of TiO as an anatase. N adsorption-desorption results showed type IV isotherms for hierarchical zeolite Y samples, and a combination of type IV and I isotherms for zeolite Y samples. UV-Vis diffuse reflectance spectra showed a shift in the absorption band to visible with increasing Ti loading and especially after Co and Ni addition. A significant effect of the support was evidenced for Ti and its interaction with Co/Ni species. The zeolite Y support stabilized Ti in the 4+ oxidation state while hierarchical zeolite Y support favored the formation of Ti species, Ni and Ni and the oxidation of Co to 3+ oxidation state. Photocatalytic activity, under UV and visible light irradiation, was evaluated by the degradation of amoxicillin, used as a model test. The photocatalytic mechanism was investigated using ethanol, p-benzoquinone and KI as ·OH and ·O radicals and hole (h) scavengers. The best results were obtained for the immobilized Ni-Ti species on the hierarchical zeolite Y support.

摘要

获得了具有微孔和分级结构且含有Ti-Ni和Ti-Co氧化物的Y型沸石样品作为活性光催化剂。负载了不同量的Ti（5%、10% TiO），随后负载Ni或Co氧化物（5%）。X射线衍射证明存在锐钛矿型的TiO。N吸附-脱附结果表明分级Y型沸石样品呈现IV型等温线，而Y型沸石样品呈现IV型和I型等温线的组合。紫外-可见漫反射光谱表明，随着Ti负载量的增加，特别是添加Co和Ni后，吸收带向可见光区移动。证明了载体对Ti及其与Co/Ni物种相互作用的显著影响。Y型沸石载体使Ti稳定在+4氧化态，而分级Y型沸石载体有利于Ti物种、Ni和Ni的形成以及Co氧化为+3氧化态。在紫外光和可见光照射下，通过降解阿莫西林作为模型测试来评估光催化活性。使用乙醇、对苯醌和KI作为·OH、·O自由基和空穴（h）清除剂来研究光催化机理。在分级Y型沸石载体上固定化的Ni-Ti物种获得了最佳结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/459b3b0573bf/nanomaterials-13-02200-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/f5fc23c89b4f/nanomaterials-13-02200-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/f5ec2519b648/nanomaterials-13-02200-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/cf51ef94259a/nanomaterials-13-02200-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/b5d0a15d9a2c/nanomaterials-13-02200-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/32e7169f992b/nanomaterials-13-02200-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/cae6b1cf2034/nanomaterials-13-02200-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/793a41f44b98/nanomaterials-13-02200-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/917810c8ffee/nanomaterials-13-02200-g013a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/459b3b0573bf/nanomaterials-13-02200-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/41502b3a1193/nanomaterials-13-02200-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/3127f2d14cc7/nanomaterials-13-02200-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/c26db1115901/nanomaterials-13-02200-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/c7cd56e80ab2/nanomaterials-13-02200-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/c293520503a2/nanomaterials-13-02200-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/f5fc23c89b4f/nanomaterials-13-02200-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/f5ec2519b648/nanomaterials-13-02200-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/cf51ef94259a/nanomaterials-13-02200-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/b5d0a15d9a2c/nanomaterials-13-02200-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/32e7169f992b/nanomaterials-13-02200-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/cae6b1cf2034/nanomaterials-13-02200-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/793a41f44b98/nanomaterials-13-02200-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/917810c8ffee/nanomaterials-13-02200-g013a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4f6/10420643/459b3b0573bf/nanomaterials-13-02200-g014.jpg

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