CN106140189A - 具有磁性Fe3O4@Bi2WO6可见光催化剂的制备方法 - Google Patents
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- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 7
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- 150000001621 bismuth Chemical class 0.000 claims abstract description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
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- 239000012153 distilled water Substances 0.000 claims description 6
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
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- 239000011941 photocatalyst Substances 0.000 claims description 5
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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Abstract
一种Fe3O4@Bi2WO6催化剂，是将Fe3O4粉末和铋盐及钨酸钠的水溶液在超声的条件下混合均匀，在180度24小时条件下得到了Fe3O4@Bi2WO6复合催化剂。本发明有益效果在于：采用较低的成本、简单的制备方法合成具有反复回收再利用的可见光催化剂。本发明公开了其制备方法。
Description
技术领域
本发明涉及具有磁性的可见光催化剂，特别涉及Fe3O4@Bi2WO6复合催化剂的制备。
背景技术
近年来，环境问题与能源问题已经成为社会面临的两大难题。环境污染给人类的健康和日常生活带来了越来越大的影响，引起了社会的广泛关注。其中水污染已经成为全球性的头等治理难题。然而，随着人口膨胀和工农业发展，水资源短缺和水污染问题导致的水危机已经成为继石油危机后的又一全球性问题。据联合国调查统计，全球40%左右的河流稳定流量已经遭受污染。中国的人均淡水资源仅仅占世界平均水平的25%，排名110,且分布非常不均衡。全国600多座城市中，存在供水不足问题的城市超过三分之二,全国67.8%河流长度被污染，90%的地下水已被污染，其中污染严重者占60%。为缓解这种严重的水源形势，除了节水优先和多渠道开源之外，作为更有效同时也治本的途径，水处理技术亟待发展。
光催化技术也已成为最有前途的一种绿色可再生新能源中技术之一。因为它是有效利用自然的太阳光或者人造光的能源的一个简单方法，并且不受地域的限制，基本上在世界各地都能使用。在光催化反应中，备受关注的是半导体类型的催化剂。 半导体光催化剂的潜在应用主要集中在以下领域：（1）光解水产生氢燃料；（2）光分解或光氧化有害物质；（3）人工光合作用；（4）光诱导超亲水性；（5）光电化学转化等。光催化剂与吸附在其表面上的污染物发生氧化还原反应并产生强氧化剂，继而将水介质或者气相介质中的污染物质完全分解。光催化法是高效、节能、环保、经济的处理污水的方法。
具有磁性纳米复合材料将磁性材料易回收的优点和具有其他能性的材料结合在一起，这样这种材料在具备一些功能特性的同时还仅具有磁性，使得这种复合纳米粒子在使用的 过程中易于回收实现再利用。
发明内容
本发明的目的是提供一种具有可回收性的高效可见光催化剂和其成本较低、方法简单的制备方法。
本发明的技术方案如下：
具有磁性可见光催化剂，它是将Fe3O4粉末和铋盐及钨酸钠的水溶液在超声的条件下混合均匀，在180度24小时条件下得到了Fe3O4@Bi2WO6复合催化剂。
一种上述Fe3O4@Bi2WO6催化剂的制备方法，其特征在于包括以下步骤：
步骤1、称取一定量粉末放到盛有蒸馏水的烧杯中，超声分散后，得到Fe3O4分散液；
步骤2、称取一定量硝酸铋和钨酸钠分别溶于蒸馏水中，在磁性搅拌的情况下将硝酸铋溶液慢慢加入到钨酸钠溶液中，并在室温条件下继续搅拌15分钟，形成白色的悬浊液，之后，用乙二胺调节PH值到7为止；
步骤3、将步骤2配置好的白色悬浊液加入到步骤1）配置的以超声分散的Fe3O4溶液中，继续超声分散30分钟后，将溶液移入到不锈钢反应釜中，然后放入烘箱中，一定的反应温度下恒温24小时。
与现有技术相比，本发明具有以下有益效果：
（1）本发明所述方法制备工艺流程简单，操作简单，反应条件温和易于控制；
（2）本发明易于大批量合成，无任何杂质且纯度和结晶度高，形貌均匀，分散性好；
（3） 本发明所用的原料价廉易得且无毒无害；操作过程中没有材料有机溶剂作为溶剂，保证了生产的安全性和环保性，有利于实现工业化；
（4）本发明所研制具有磁性的可见光光催化剂对于环境治理中发展有毒、有害的有机染料的新型治理技术提供了一定量的理论基础和应用指导。
具体实施方式
下面通过实施例对本发明所述的磁性可见光催化剂的制备方法做进一步说明。
实施例1
步骤1、称取0.05克Fe3O4粉末放到盛有20mL蒸馏水的烧杯中，超声分散30分钟后，得到Fe3O4分散液；
步骤2、称取1mmol硝酸铋和1mmol钨酸钠分别溶于20mL蒸馏水中，在磁性搅拌的情况下将硝酸铋溶液慢慢加入到钨酸钠溶液中，并在室温条件下继续搅拌15分钟，形成白色的悬浊液，之后，用乙二胺调节PH值到7为止；
步骤3、将步骤2配置好的白色悬浊液加入到步骤1）配置的以超声分散的Fe3O4溶液中，继续超声分散30分钟后，将溶液移入到不锈钢反应釜中，然后放入烘箱中，180的反应温度下加热24小时。
Claims (2)
1.具有磁性可见光催化剂，其特征是将Fe3O4粉末和铋盐及钨酸钠的水溶液在超声的条件下混合均匀，在180度24小时条件下得到了Fe3O4@Bi2WO6复合催化剂。
2.根据权利要求1所述的复合催化剂的制备方法，其特征在于包括以下步骤：
步骤1、称取0.05克Fe3O4粉末放到盛有20mL蒸馏水的烧杯中，超声分散30分钟后，得到Fe3O4分散液；
步骤2、称取1mmol硝酸铋和1mmol钨酸钠分别溶于20mL蒸馏水中，在磁性搅拌的情况下将硝酸铋溶液慢慢加入到钨酸钠溶液中，并在室温条件下继续搅拌15分钟，形成白色的悬浊液，之后，用乙二胺调节PH值到7为止；
步骤3、将步骤2配置好的白色悬浊液加入到步骤1）配置的以超声分散的Fe3O4溶液中，继续超声分散30分钟后，将溶液移入到不锈钢反应釜中，然后放入烘箱中，180的反应温度下加热24小时。
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262121A (zh) * | 2017-07-20 | 2017-10-20 | 西安科技大学 | 一种磁性复合可见光催化剂及其制备方法 |
| CN107754807A (zh) * | 2017-12-01 | 2018-03-06 | 四川大学 | 一种利用过硫酸钠及磁性可见光催化剂去除水中雌激素的方法 |
| CN109865517A (zh) * | 2019-03-04 | 2019-06-11 | 河海大学 | 一种磁性钨酸铋光催化剂及其制备方法与应用 |
| CN111012927A (zh) * | 2019-12-27 | 2020-04-17 | 上海纳米技术及应用国家工程研究中心有限公司 | 多孔纳米片层结构诊疗探针的制备方法及其产品和应用 |
| CN114029080A (zh) * | 2021-12-17 | 2022-02-11 | 江苏科技大学 | 一种三元异质结可见光催化剂及其制备方法 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262121A (zh) * | 2017-07-20 | 2017-10-20 | 西安科技大学 | 一种磁性复合可见光催化剂及其制备方法 |
| CN107754807A (zh) * | 2017-12-01 | 2018-03-06 | 四川大学 | 一种利用过硫酸钠及磁性可见光催化剂去除水中雌激素的方法 |
| CN109865517A (zh) * | 2019-03-04 | 2019-06-11 | 河海大学 | 一种磁性钨酸铋光催化剂及其制备方法与应用 |
| CN111012927A (zh) * | 2019-12-27 | 2020-04-17 | 上海纳米技术及应用国家工程研究中心有限公司 | 多孔纳米片层结构诊疗探针的制备方法及其产品和应用 |
| CN114029080A (zh) * | 2021-12-17 | 2022-02-11 | 江苏科技大学 | 一种三元异质结可见光催化剂及其制备方法 |
| CN114029080B (zh) * | 2021-12-17 | 2024-02-27 | 江苏科技大学 | 一种三元异质结可见光催化剂及其制备方法 |
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