CN108163886A - 具有球型结构的羟基锡酸铜太阳光催化剂的制备方法 - Google Patents
具有球型结构的羟基锡酸铜太阳光催化剂的制备方法 Download PDFInfo
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- 229940071182 stannate Drugs 0.000 title claims abstract description 21
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 15
- 239000010949 copper Substances 0.000 title claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 14
- 125000005402 stannate group Chemical group 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 6
- 229910052927 chalcanthite Inorganic materials 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 6
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- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
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- 239000002351 wastewater Substances 0.000 description 4
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 3
- 239000001045 blue dye Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 229960000907 methylthioninium chloride Drugs 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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- 238000007146 photocatalysis Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910016347 CuSn Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 238000006862 quantum yield reaction Methods 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
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- B01J23/76—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
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Abstract
本发明公开了一种具有球型结构的羟基锡酸铜太阳光催化剂的制备方法，将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到具有球型结构的羟基锡酸铜太阳光催化剂。本发明采用简单的化学沉淀法制备出具有球型结构的羟基锡酸铜太阳光催化剂，制得的光催化剂具有在自然太阳光照射下对有机污染物降解效率较高的特性。
Description
技术领域
本发明属于光催化材料的合成技术领域，具体涉及一种具有球型结构的羟基锡酸铜太阳光催化剂的制备方法。
背景技术
光催化氧化技术以其高效节能、无二次污染、适用范围广等优点在难生物降解有机废水处理中表现出良好的应用前景，具有极大的开发潜力。光催化剂引发光催化氧化还原反应的本质是其充当了电子传递体。当光催化剂吸收一个能量（hυ）与其带隙能（E g）相匹配或超过E g的光子，价带上的电子（e-）将会向导带跃迁，同时在价带上留下带正电的空穴（h+），从而形成光生e--h+对。h+是一种强氧化剂，导带e-是一种强还原剂，它们可以将大多数的有机和无机污染物（P）无选择性的直接、间接氧化或还原，且不需要添加其它化学试剂，从而实现污染物的减量化和无害化。
对光催化反应历程而言最关键的是光生e--h+的激发和迁移两步。激发可由电子能带结构调控，即带隙宽度和能带位置决定了催化剂的响应光波长和反应进行的可能性。光生e--h+的迁移率则决定了催化活性和量子产率，一般认为该过程与晶体体相结构以及晶化度、表面积、共催化剂等微观表面结构密切相关。因此，构建一个高效稳定的可见光催化系统除了要考虑电子结构外，还要注意材料种类、形貌结构、结晶度及表面特性等性质的影响。材料的选择尤其重要，因为它决定了半导体材料的可见光响应程度和总效率。
近年来，锡酸盐化合物被认为是一种新型的光催化剂，引起了人们广泛的研究兴趣。催化剂表面含有的大量羟基基团有利于提高材料的光催化活性，且球型颗粒的比表面积大，能够承载更多的活性中心。采用沉淀法合成具有球型结构的CuSn(OH)6有望获得高活性的可见光催化剂，对于拓展纳米光催化技术降解废水污染物的工业化应用范围、节省废水处理能耗，具有重大的现实意义。
发明内容
本发明解决的技术问题是提供了一种工艺简单且成本低廉的具有球型结构的羟基锡酸铜太阳光催化剂的制备方法。
本发明为解决上述技术问题采用如下技术方案，具有球型结构的羟基锡酸铜太阳光催化剂的制备方法，其特征在于具体步骤为：将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到具有球型结构的羟基锡酸铜太阳光催化剂。
本发明与现有技术相比具有以下有益效果：本发明采用简单的化学沉淀法制备出具有球型结构的羟基锡酸铜太阳光催化剂，制得的光催化剂具有在自然太阳光照射下对有机污染物降解效率较高的特性。
附图说明
图1为具有球型结构的羟基锡酸铜太阳光催化剂及其煅烧产物的XRD图；
图2为具有球型结构的羟基锡酸铜太阳光催化剂的SEM图。
具体实施方式
以下通过实施例对本发明的上述内容做进一步详细说明，但不应该将此理解为本发明上述主题的范围仅限于以下的实施例，凡基于本发明上述内容实现的技术均属于本发明的范围。
实施例1
将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液（25wt%-28wt%）得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到具有球型结构的羟基锡酸铜太阳光催化剂，经过自然太阳光照射5h，对5mg/L的亚甲基蓝染料废水的去除率为58.26%。
实施例2
将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液（25wt%-28wt%）得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到羟基锡酸铜光催化剂，将上述制得的羟基锡酸铜光催化剂在300℃的条件下煅烧得到产物，经过自然太阳光照射5h，对5mg/L的亚甲基蓝染料废水的去除率为49.58%。
实施例3
将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液（25wt%-28wt%）得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到羟基锡酸铜光催化剂，将上述制得的羟基锡酸铜光催化剂在700℃的条件下煅烧得到产物，经过自然太阳光照射5h，对5mg/L的亚甲基蓝染料废水的去除率为59.11%。
基于以上实施例，选取常温下制备的羟基锡酸铜光催化剂的性能较优，通过进一步的表征研究，该条件下制备的羟基锡酸铜光催化剂具有球型结构，相比于传统的光催化材料，本发明制得的羟基锡酸铜光催化剂能够响应自然太阳光，具有可见光催化活性，且制备方法简单快速，无二次污染。
以上实施例描述了本发明的基本原理、主要特征及优点，本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明原理的范围下，本发明还会有各种变化和改进，这些变化和改进均落入本发明保护的范围内。
Claims (1)
1.具有球型结构的羟基锡酸铜太阳光催化剂的制备方法，其特征在于具体步骤为：将0.8mmol CuSO4·5H2O加入到16mL去离子水中并搅拌至完全溶解，在搅拌的过程中加入1mL浓氨水溶液得到深蓝色溶液，2min后滴加16mL摩尔浓度为0.05mol/L的Na2SnO3溶液，在搅拌条件下继续反应15min，将沉淀物离心、水洗后置于干燥箱中烘干，再置于研钵中研磨得到具有球型结构的羟基锡酸铜太阳光催化剂。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111874940A (zh) * | 2020-07-13 | 2020-11-03 | 滁州学院 | 一种管状二氧化锡、碳包覆管状二氧化锡纳米复合材料的制备方法及应用 |
| CN114032579A (zh) * | 2021-10-15 | 2022-02-11 | 天津大学 | 一种铜锡双金属氢氧化物催化剂在电催化氨氧化制氮气中的应用 |
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- 2017-12-11 CN CN201711309167.6A patent/CN108163886A/zh active Pending
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| DANWEI HUANG ET AL.: ""Hydrothermal synthesis of MSn(OH)6 (M = Co, Cu, Fe, Mg, Mn, Zn) and their photocatalytic activity for the destruction of gaseous benzene"", 《CHEMICAL ENGINEERING JOURNAL》 * |
| SHENG-LIANG ZHONG ET AL.: ""CuSn(OH)6 submicrospheres: Room-temperature synthesis, growth mechanism, and weak antiferromagnetic behavior"", 《MATERIALS RESEARCH BULLETIN》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874940A (zh) * | 2020-07-13 | 2020-11-03 | 滁州学院 | 一种管状二氧化锡、碳包覆管状二氧化锡纳米复合材料的制备方法及应用 |
| CN111874940B (zh) * | 2020-07-13 | 2022-12-06 | 滁州学院 | 一种管状二氧化锡、碳包覆管状二氧化锡纳米复合材料的制备方法及应用 |
| CN114032579A (zh) * | 2021-10-15 | 2022-02-11 | 天津大学 | 一种铜锡双金属氢氧化物催化剂在电催化氨氧化制氮气中的应用 |
| CN114032579B (zh) * | 2021-10-15 | 2023-07-07 | 天津大学 | 一种铜锡双金属氢氧化物催化剂在电催化氨氧化制氮气中的应用 |
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