钴掺杂高钛型高炉渣光催化材料制备及性能优化

霍红英; 邹敏

doi:10.7513/j.issn.1004-7638.2021.01.011

钴掺杂高钛型高炉渣光催化材料制备及性能优化

doi: 10.7513/j.issn.1004-7638.2021.01.011

霍红英^{1, 2},
邹敏¹

1.
攀枝花学院钒钛学院，四川攀枝花 617000
2.
攀枝花学院国家钒钛检测重点实验室，四川攀枝花 617000

基金项目: 攀枝花市人才新政国家钒钛检测重点实验室综合资助项目（20180816）；四川省大学生创新创业训练计划项目（S201911360037）；攀枝花学院教学研究与改革重点项目（JJ1720-2017）；四川省钒钛材料工程技术研究中心项目（2020-2FTGC-YB-02）。

详细信息

作者简介:
霍红英（1984—），女，副教授，主要从事钒钛材料分析、科研及教学工作，E-mail：258116574@qq.com

中图分类号: X757, TQ426
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- 被引次数: 0
出版历程
- 收稿日期: 2020-10-20
- 刊出日期: 2021-02-10

Preparation and performance optimization of Co-doped high-titanium blast furnace slag as photocatalytic material

Huo Hongying^{1, 2},
Zou Min¹

1.
College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan, China
2.
State Key Laboratory for Vanadium & Titanium Testing, Panzhihua University, Panzhihua 617000, Sichuan, China

摘要

摘要: 为了实现以非提钛方法对高钛型高炉渣的综合利用，利用其含TiO₂可制备光催化剂的特点，以攀钢高钛型高炉渣掺杂硝酸钴为原料，采用液相法掺杂并烧结制备掺杂Co的光催化剂，在紫外光下，考察了煅烧温度、掺杂量及煅烧时间对模拟污染物亚甲基蓝溶液降解率的影响。结果表明：在煅烧温度600 ℃、Co-Ti质量掺杂比（w(Co): w(Ti)）0.03、煅烧时间2 h时，制备的掺杂Co光催化剂降解率达到89.0%，比未掺杂之前提高了32.4%。
- 高钛型高炉渣 /
- 硝酸钴 /
- 光催化剂 /
- 降解率
Abstract: In order to realize the comprehensive utilization of high-titanium blast furnace slag without titanium extraction, cobalt doped photocatalyst was prepared via liquid phase method followed by sintering using Pangang high-titanium blast furnace slag and cobalt nitrate as raw materials. The influences of calcination temperature, Co doping amount and calcination time on the degradation rate of simulated pollutant methylene blue solution were investigated under ultraviolet light. The results show that the degradation rate of 89.0% can be obtained for the Co-doped photocatalyst roasted at 600 °C for 2 h with mass ratio of Co to Ti of 0.03, 32.4% higher than that of the photocatalyst without Co doping.
- high titanium blast furnace slag /
- cobalt nitrate /
- photocatalyst /
- degradation rate

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图 1 高炉渣及光催化剂的XRD图谱

Figure 1. XRD patterns of blast furnace slag and the photocatalysts

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图 2 煅烧温度对光催化剂降解效率的影响

Figure 2. Effect of calcination temperature on degradation efficiency of the photocatalyst

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图 3 掺杂比对光催化剂降解效率的影响

Figure 3. Influence of doping ratio on degradation efficiency of photocatalyst

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图 4 煅烧时间对光催化剂降解效率的影响

Figure 4. Effect of calcination time on degradation efficiency of photocatalyst

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表 1 高钛型高炉渣的主要成分

Table 1. Main compositions of high titanium blast furnace slag %

TiO₂	Fe₂O₃	SiO₂	MgO	Al₂O₃	CaO	V₂O₅	F
23.16	2.64	24.01	7.47	13.49	27.19	0.82	0.12

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表 2 正交试验结果与分析

Table 2. Results and analysis of orthogonal tests

试验号	Aw(Co)∶ w(Ti)	B煅烧温度/℃	空列	C煅烧时间/h	降解效率/%
1	1(0.02)	1(600)	1	1(1)	75.26
2	1(0.02)	2(700)	2	2(2)	70.53
3	1(0.02)	3(800)	3	3(3)	65.21
4	2(0.03)	1(600)	2	3(3)	79.22
5	2(0.03)	2(700)	3	1(1)	70.22
6	2(0.03)	3(800)	1	2(2)	79.20
7	3(0.04)	1(600)	3	2(2)	75.18
8	3(0.04)	2(700)	1	3(3)	60.28
9	3(0.04)	3(800)	2	1(1)	70.25
k₁	70.33	76.55	71.58	71.91
k₂	76.21	67.01	73.33	74.97
k₃	68.57	71.55	70.20	68.24
极差R	7.64	9.54	3.13	6.73
	因素主→次		BAC
	最优方案		B₁A₂C₂

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