CN112604679A - 一种氧缺陷钨酸铋纳米带光催化材料的制备方法及产品和应用 - Google Patents
一种氧缺陷钨酸铋纳米带光催化材料的制备方法及产品和应用 Download PDFInfo
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- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 54
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 54
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000001301 oxygen Substances 0.000 title claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 41
- 230000002950 deficient Effects 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims abstract description 38
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 35
- 239000002127 nanobelt Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002074 nanoribbon Substances 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000004098 Tetracycline Substances 0.000 claims abstract description 12
- 229960002180 tetracycline Drugs 0.000 claims abstract description 12
- 229930101283 tetracycline Natural products 0.000 claims abstract description 12
- 235000019364 tetracycline Nutrition 0.000 claims abstract description 12
- 150000003522 tetracyclines Chemical class 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 229940049676 bismuth hydroxide Drugs 0.000 claims abstract description 6
- TZSXPYWRDWEXHG-UHFFFAOYSA-K bismuth;trihydroxide Chemical compound [OH-].[OH-].[OH-].[Bi+3] TZSXPYWRDWEXHG-UHFFFAOYSA-K 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract description 6
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 6
- 229910001930 tungsten oxide Inorganic materials 0.000 claims abstract description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 238000006731 degradation reaction Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 5
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- AAQNGTNRWPXMPB-UHFFFAOYSA-N dipotassium;dioxido(dioxo)tungsten Chemical compound [K+].[K+].[O-][W]([O-])(=O)=O AAQNGTNRWPXMPB-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
本发明提供一种氧缺陷钨酸铋纳米带光催化材料的制备方法,氧化钨溶于强碱溶液中搅拌,将上述溶液转移至反应釜中,反应离心洗涤干燥得钨酸盐;钨酸盐溶于去离子水中,超声后加入氢氧化铋溶液,干燥离心洗涤干燥箱得钨酸铋纳米带;钨酸铋纳米带放入管式炉中,通入还原性气体,煅烧得氧缺陷钨酸铋纳米带。本发明提供一种氧缺陷钨酸铋纳米带光催化材料的制备方法,钨酸铋纳米带光催化材料具有较大的比表面积,缺氧型缺陷对提高材料的光催化性能起着很重要的作用。有利于提高材料的光催化性能。在黑暗中首先氧缺陷钨酸铋纳米带对四环素的吸附达到平衡,然后在紫外光催化条件下,经过60 min后,对四环素的降解达到99.2%。
Description
技术领域
本发明涉及光催化材料及其制备和应用,具体为一种氧缺陷钨酸铋纳米带光催化材料的制备方法及产品和应用。
背景技术
随着化学工业的发展,环境污染日益严重。印染废水的排放是造成水污染的重要原因之一。每年都有大量的商业染料排放,这些染料化学性质稳定,对生态环境造成巨大伤害。利用半导体氧化物材料在太阳光照射下能受激活化的特性,可有效的氧化降解有机物为二氧化碳和水等小分子。与传统的净化方法相比,半导体光催化技术具有反应条件温和、无二次污染、操作简单和降解效果明显等优点。二氧化钛是备受关注的光催化剂之一,其低毒、低成本、耐用、超亲水且具有优异的光化学稳定性。
传统的二氧化钛光催化剂,禁带宽度为(3.03-3.2 eV),只对紫外光区的光有吸收,与传统的二氧化钛等半导体材料相比,钨酸铋(Bi2WO6)是一种间接带隙跃迁的半导体材料,具有较窄的禁带宽度(2.75-2.9 eV),吸收光的波长可延伸到可见光区域(450 nm),对光的利用率更高,且具有良好的化学稳定性。
本发明提供一种氧缺陷钨酸铋纳米带光催化材料的制备方法,钨酸铋纳米带光催化材料具有较大的比表面积,缺氧型缺陷对提高材料的光催化性能起着很重要的作用。有利于提高材料的光催化性能。该制备工艺相对简单,易操作。
发明内容
为克服现有技术的不足,本发明目的在于提供一种氧缺陷钨酸铋纳米带光催化材料的制备方法。
本发明的再一目的在于:提供上述方法制备的氧缺陷钨酸铋纳米带光催化材料产品。
本发明的又一目的在于:提供上述产品的应用。
本发明目的通过下述方案实现,一种氧缺陷钨酸铋纳米带光催化材料的制备方法,包括如下步骤,
第一步:将2 g氧化钨溶于40 mL强碱溶液中,搅拌2-4 h,标记为溶液A;
第二步:将上述溶液转移至反应釜中,200-240 ℃反应48-72 h,进行离心,并用去离子水和乙醇洗涤数次,在60-80 ℃干燥8-12 h,得钨酸盐;
第三步:将0.5 g钨酸盐溶于10-40 mL去离子水中,超声30-60 min后加入氢氧化铋溶液,在100-12 ℃干燥20-24 h,进行离心,并用弱酸溶液洗涤3-5 次,在真空干燥箱中60-80 ℃干燥8-12 h,得钨酸铋纳米带;
第四步:将100 mg钨酸铋纳米带放入管式炉中,通入还原性气体,240-300 ℃煅烧2-3 h,得氧缺陷钨酸铋纳米带。
所述的强碱是氢氧化钾或氢氧化钠中的一种或其组合。
所述的弱酸是醋酸或柠檬酸中的一种或其组合。
所述的还原气体是氢气或氢氩混合气体中的一种或其组合。
本发明提供一种氧缺陷钨酸铋纳米带光催化材料,根据上述任一所述方法制备得到。
本发明提供一种氧缺陷钨酸铋纳米带光催化材料在废水处理中作为催化剂对四环素进行降解的应用。
在黑暗中首先氧缺陷钨酸铋纳米带对四环素的吸附达到平衡,然后在紫外光催化条件下,经过60 min后,对四环素的降解达到99.2%。
本发明提供一种氧缺陷钨酸铋纳米带光催化材料的制备方法,钨酸铋纳米带光催化材料具有较大的比表面积,缺氧型缺陷对提高材料的光催化性能起着很重要的作用。有利于提高材料的光催化性能。该制备工艺相对简单,易操作。
附图说明
图1为实施例1 氧缺陷钨酸铋纳米带光催化材料的紫外光催化降解图;
图2为实施例2 氧缺陷钨酸铋纳米带光催化材料的紫外光催化降解图;
图3为实施例3 氧缺陷钨酸铋纳米带光催化材料的紫外光催化降解图。
具体实施方式
本发明通过下面具体实例进行详细的描述,但是本发明的保护范围不受限于这些实施例子。
实施例1
一种氧缺陷钨酸铋纳米带光催化材料,按如下步骤制备:
第一步:将2 g氧化钨溶于40 mL氢氧化钠溶液中,搅拌2 h,标记为溶液A;
第二步:将上述溶液转移至反应釜中,200 ℃反应72 h,进行离心,并用去离子水和乙醇洗涤数次,在60 ℃干燥12 h,得钨酸钠;
第三步:将0.5 g钨酸钠溶于40 mL去离子水中,超声30 min后加入氢氧化铋溶液,在100 ℃干燥24 h,进行离心,并用醋酸溶液洗涤3 次,在真空干燥箱中60 ℃干燥12 h,得钨酸铋纳米带;
第四步:将100 mg钨酸铋纳米带放入管式炉中,通入氢气,240 ℃煅烧3 h,得氧缺陷钨酸铋纳米带。
图1为本实施例氧缺陷钨酸铋纳米带的紫外光催化降解图,在黑暗中首先氧缺陷钨酸铋纳米带对四环素的吸附达到平衡,然后在紫外光催化条件下,经过60 min后,对四环素的降解达到99.2%。
实施例2
一种氧缺陷钨酸铋纳米带光催化材料,按如下步骤制备:
第一步:将2 g氧化钨溶于40 mL氢氧化钾溶液中,搅拌2 h,标记为溶液A;
第二步:将上述溶液转移至反应釜中,240 ℃反应48 h,进行离心,并用去离子水和乙醇洗涤数次,在60 ℃干燥12 h,得钨酸钾;
第三步:将0.5 g钨酸钾溶于40 mL去离子水中,超声30 min后加入氢氧化铋溶液,在100 ℃干燥24 h,进行离心,并用醋酸溶液洗涤3 次,在真空干燥箱中80 ℃干燥8 h,得钨酸铋纳米带;
第四步:将100 mg钨酸铋纳米带放入管式炉中,通入氢氩混合气体,300 ℃煅烧2h,得氧缺陷钨酸铋纳米带。
图2为本实施例氧缺陷钨酸铋纳米带的紫外光催化降解图,在黑暗中首先氧缺陷钨酸铋纳米带对四环素的吸附达到平衡,然后在紫外光催化条件下,经过60 min后,对四环素的降解达到98.7%。
实施例3
一种氧缺陷钨酸铋纳米带光催化材料,按如下步骤制备:
第一步:将2 g氧化钨溶于40 mL氢氧化钠溶液中,搅拌4 h,标记为溶液A;
第二步:将上述溶液转移至反应釜中,240 ℃反应48 h,进行离心,并用去离子水和乙醇洗涤数次,在60 ℃干燥12 h,得钨酸钠;
第三步:将0.5 g钨酸钠溶于40 mL去离子水中,超声60 min后加入氢氧化铋溶液,在100 ℃干燥24 h,进行离心,并用柠檬酸溶液洗涤3 次,在真空干燥箱中80 ℃干燥8 h,得钨酸铋纳米带;
第四步:将100 mg钨酸铋纳米带放入管式炉中,通入氢氩混合气体,300 ℃煅烧2h,得氧缺陷钨酸铋纳米带。
图3为本实施例氧缺陷钨酸铋纳米带的紫外光催化降解图,在黑暗中首先氧缺陷钨酸铋纳米带对四环素的吸附达到平衡,然后在紫外光催化条件下,经过60 min后,对四环素的降解达到99.0%。
Claims (6)
1.一种氧缺陷钨酸铋纳米带光催化材料的制备方法,其特征在于,包括如下步骤,
第一步:将2 g氧化钨溶于40 mL强碱溶液中,搅拌2-4 h,标记为溶液A;
第二步:将上述溶液转移至反应釜中,200-240 ℃反应48-72 h,进行离心,并用去离子水和乙醇洗涤数次,在60-80 ℃干燥8-12 h,得钨酸盐;
第三步:将0.5 g钨酸盐溶于10-40 mL去离子水中,超声30-60 min后加入氢氧化铋溶液,在100-12 ℃干燥20-24 h,进行离心,并用弱酸溶液洗涤3-5 次,在真空干燥箱中60-80℃干燥8-12 h,得钨酸铋纳米带;
第四步:将100 mg钨酸铋纳米带放入管式炉中,通入还原性气体,240-300 ℃煅烧2-3h,得氧缺陷钨酸铋纳米带。
2.根据权利要求1所述的一种氧缺陷钨酸铋纳米带光催化材料的制备方法,其特征在于,所述的强碱是氢氧化钠、氢氧化钾中的一种或其组合。
3.根据权利要求1所述的一种氧缺陷钨酸铋纳米带光催化材料的制备方法,其特征在于所述的弱酸是醋酸、柠檬酸中的一种或其组合。
4.根据权利要求1所述的一种氧缺陷钨酸铋纳米带光催化材料的制备方法,其特征在于所述的还原气体是氢气、氢氩混合气体中的一种或其组合。
5.一种氧缺陷钨酸铋纳米带光催化材料,其特征在于根据权利要求1-4任一所述方法制备得到。
6.一种根据权利要求5所述氧缺陷钨酸铋纳米带光催化材料在废水处理中作为催化剂对四环素进行降解的应用。
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