工业硫酸氧钛溶液制备高比表面积二氧化钛及其性能研究

蒲洪; 张桓

doi:10.7513/j.issn.1004-7638.2023.03.005

工业硫酸氧钛溶液制备高比表面积二氧化钛及其性能研究

doi: 10.7513/j.issn.1004-7638.2023.03.005

蒲洪,
张桓

攀枝花学院钒钛学院, 四川攀枝花 617000

基金项目: 四川省自然科学基金（2022NSFSC0307）；攀枝花市指导性科技计划项目（2020ZD-G-9）；四川省高校重点实验室开发基金项目（LYJ2103）。

详细信息

作者简介:
蒲洪，1986年出生，男，四川南充人，硕士研究生，主要从事功能材料及制备技术的研究，E-mail：puhongyongde@126.com

中图分类号: TF823,TQ621
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出版历程
- 收稿日期: 2022-12-16
- 刊出日期: 2023-06-30

Preparation of titania with high surface area by industrial titanyl sulfate solution and its properties study

Pu Hong,
Zhang Huan

College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan China

摘要

摘要: 以工业硫酸氧钛溶液为钛源，利用水热法制备高比表面积二氧化钛，考察了水热反应时间、煅烧温度对比表面积影响。采用BET、XRD、XPS、SEM、TEM、紫外可见漫反射等对样品进行表征，并以罗丹明B对二氧化钛可见光催化性能进行评价。研究表明，恰当的水热反应时间和较低的煅烧温度有利于制备出高比表面积二氧化钛。水热反应3 h、煅烧温度300 ℃所得二氧化钛具有最高的比表面积，达214.3 m²/g，其在可见光降解罗丹明B时表现出明显优于商品二氧化钛P25的活性，2 h降解率达90.3%，这是因为所制二氧化钛具有更高的比表面积和较优的可见光吸收。
- 二氧化钛 /
- 比表面积 /
- 工业硫酸氧钛 /
- 水热法 /
- 光催化
Abstract: Titania with high surface area was prepared by hydrothermal method using industrial titanyl sulfate solution as raw material. The influence of hydrothermal reaction time and calcination temperature on the specific surface area of titania were investigated. The samples were characterized by BET, XRD, XPS, SEM, TEM, FT-IR, UV-Vis DRS and the visible photocatalytic activity was evaluated by the degradation of model compound Rhodamine B. The results show that the proper hydrothermal reaction time and low calcination temperature are beneficial to the preparation of titania with high specific surface area. The titania obtained by hydrothermal reaction for 3 h and calcination temperature at 300 ℃ has the highest specific surface area, up to 214.3 m²/g. And the visible light degradation activity of Rhodamine B is significantly better than that of commercial titanium dioxide P25, which is because the prepared titania has a higher specific surface area and better visible light absorption, its degradation rate reached 90.3% in 2 h.
- titania /
- surface area /
- industrial titanyl sulfate solution /
- hydrothermal method /
- photocatalytic

HTML全文

图 1 不同偏钛酸比表面积

Figure 1. Specific surface area of titanic acid at different hydrothermal time

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图 2 不同煅烧温度所得二氧化钛的XRD谱

Figure 2. XRD patterns of titania obtained at different calcination temperature

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图 3 不同温度煅烧二氧化钛红外光谱

Figure 3. FT-IR patterns of titania obtained at different calcination temperature

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图 4 300 ℃煅烧所得二氧化钛的SEM形貌（a）和TEM形貌(b)

Figure 4. Scanning electron microscopy image (a) and transmission electron microscopy image (b) of titania calcined at 300 ℃

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图 5 （a）300 ℃煅烧温度所得二氧化钛和P25的紫外可见漫反射，插图为放大图片，（b）样品禁带宽度

Figure 5. (a) UV-vis spectra of titania calcined at 300 ℃ and P25, enlarged image(inset), (b) their corresponding estimated band gaps

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图 6 300 ℃煅烧二氧化钛的XPS分析：（a）全谱；（b）O高分辨图；（c）Ti高分辨图

Figure 6. XPS analysis of titania calcined at 300 ℃: (a) Complete spectra of sample, (b)Deconvoluted peak of O 1s , (c) Deconvoluted Ti 2p peak

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图 7 不同煅烧温度所得二氧化钛可见光（λ≥420 nm）降解罗丹明B

Figure 7. Comparison of photocatalytic activity (λ ≥ 420 nm) of RhB by titania obtained at different calcination temperature

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