CN108249478B - 一种微米花结构金红石相二氧化钛的制备方法 - Google Patents
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 9
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 8
- 239000013078 crystal Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
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- 239000003054 catalyst Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 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 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
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- 239000002351 wastewater Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及无机非金属材料领域,尤其是微米花结构的金红石相二氧化钛的制备方法。该方法以钛粉加入水中混合均匀后,加入盐酸与过氧化氢搅拌后,再进行水热反应,将水热反应后产物清洗干燥研磨后得到产品。产品为具有花状特殊形貌的金红石相TiO2粉末,比表面积高,光催化降解有机物效果好。生产工艺无需热处理,直接水热合成便可得到具有金红石晶型的TiO2粉末,有效缩短了生产周期、降低了生产成本。
Description
技术领域
本发明涉及无机非金属材料领域,尤其是微米花结构的金红石相二氧化钛的制备方法。
背景技术
TiO2作为一种半导体催化剂,由于具有独特的性质在太阳能电池、光催化制氢、空气污染的治理、染料废水的降解等方面被广泛运用。TiO2在自然界中存在三种晶型,即锐钛矿、金红石和板钛矿。它们的性质和形状是有差异的,其中金红石型TiO2是三种结构中最稳定的,即使在高温下也不发生转化和分解。目前TiO2光催化剂的制备方法主要有水热法、溶胶-凝胶法、微乳液法等。传统的溶胶凝胶法以金属有机或无机化合物为原料,在相应的溶剂中进行水解反应,形成溶胶,再经过陈化得到凝胶,最后干燥,烧结得到具有一定晶型的纳米TiO2颗粒。此种制备方法成本较低,但工序复杂,必须经过热处理,同时得到的产物TiO2颗粒比表面积低,不利于光催化反应。
发明内容
为解决上述问题,本发明提供了一种金红石相二氧化钛的制备方法。采用一步水热法,不需烧结热处理即可制得具有金红石相晶型的TiO2结构,且本发明制备的为TiO2微米花特殊形貌结构。
为了实现上述目的,本发明所采用以下技术方案,一种微米花结构金红石相二氧化钛的制备方法,包括以下步骤:
a取钛粉加入去离子水中,混合均匀,按重量份计,钛粉:去离子水=1:90~95;
b取36~38wt%盐酸与过氧化氢加入步骤a的混合液中,搅拌30 min以上,得到溶液,按体积份计,过氧化氢:盐酸:去离子水=1~2:10:18~19;
c将步骤b所得溶液在200 ℃条件下水热反应10~18 h;
d将水热反应产物固液分离,得到固体粉末,用去离子水反复清洗粉末至中性,80℃干燥,研磨,得到产品。
作为优选,所述步骤a中,按重量份计,钛粉:去离子水=1:95。
作为优选,所述步骤b中,按体积份计,盐酸:(过氧化氢+去离子水)=1:2。
进一步,所述步骤c中溶液保存在水热反应釜中在恒温鼓风干燥箱中进行反应。
本发明采用一步水热法制备出具有花状特殊形貌的TiO2粉末,无需热处理,直接水热合成便可得到具有金红石晶型的TiO2粉末,有效缩短了生产周期、降低了生产成本,同时产品比表面积高,催化效应好。
附图说明
图1是实施例1所得产品的X射线衍射图;
图2、图3是实施例1所得产品的扫描电镜图;
图4是350 W氙灯照射下0.1 g实施例1所得产品光催化降解l0 mg/L的亚甲基蓝溶液的降解效率图。
具体实施方式
下面通过具体的实施例对本发明做进一步的详细描述。
实施例1:一种微米花结构金红石相二氧化钛的制备方法,包括以下步骤:
(1)称量0.2 g球形钛粉置于烧杯中,加入19 ml去离子水,匀速搅拌使其混合均匀;
(2)量取10 ml 36~38 wt%盐酸以及1 ml过氧化氢,倒入步骤(1)中的烧杯中,置于磁力搅拌器上缓慢搅拌30 min;
(3)将上述溶液转移至50 ml的水热合成釜中,拧紧反应釜,置于恒温鼓风干燥箱中200 ℃水热反应18 h;
(4)将水热反应产物固液分离,得到固体粉末,用去离子水反复清洗粉末至中性,80 ℃干燥,研磨,后得到产品。
实施例2:一种微米花结构金红石相二氧化钛的制备方法,包括以下步骤:
(1)称量0.2 g球形钛粉置于烧杯中,加入18 ml去离子水,匀速搅拌使其混合均匀;
(2)量取10 ml 36~38 wt%盐酸以及2ml过氧化氢,倒入步骤(1)中的烧杯中,置于磁力搅拌器上缓慢搅拌30 min;
(3)将上述溶液转移至50 ml的水热合成釜中,拧紧反应釜,置于恒温鼓风干燥箱中200 ℃水热反应10 h;
(4)将水热反应产物固液分离,得到固体粉末,用去离子水反复清洗粉末至中性,80 ℃干燥,研磨,后得到产品。
实施例3:一种微米花结构金红石相二氧化钛的制备方法,包括以下步骤:
(1)称量0.2 g球形钛粉置于烧杯中,加入19 ml去离子水,匀速搅拌使其混合均匀;
(2)量取10 ml 36~38 wt%盐酸以及1 ml过氧化氢,倒入步骤(1)中的烧杯中,置于磁力搅拌器上缓慢搅拌40 min;
(3)将上述溶液转移至50 ml的水热合成釜中,拧紧反应釜,置于恒温鼓风干燥箱中200 ℃水热反应14 h;
(4)将水热反应产物固液分离,得到固体粉末,用去离子水反复清洗粉末至中性,80 ℃干燥,研磨,后得到产品。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,在本发明的精神和原则内可以有各种更改和变化,这些等同的变型或替换等,均包含在本发明的保护范围之内。
Claims (4)
1.一种微米花结构金红石相二氧化钛的制备方法,其特征在于,包括以下步骤:
a取球形钛粉加入去离子水中,混合均匀,按重量份计,钛粉:去离子水=1:90~95;
b取36~38 wt%盐酸与过氧化氢加入步骤a的混合液中,搅拌30 min以上,得到溶液,按体积份计,过氧化氢:盐酸:去离子水=1~2:10:18~19;
c将步骤b所得溶液在200 ℃条件下水热反应10~18 h;
d将水热反应产物固液分离,得到固体粉末,用去离子水反复清洗粉末至中性,80 ℃干燥,研磨,得到产品。
2.根据权利要求1所述的一种微米花结构金红石相二氧化钛的制备方法,其特征在于:步骤a中,按重量份计,钛粉:去离子水=1:95。
3.根据权利要求1所述的一种微米花结构金红石相二氧化钛的制备方法,其特征在于:所述步骤b中,按体积份计,盐酸:(过氧化氢+去离子水)=1:2。
4.根据权利要求1所述的一种微米花结构金红石相二氧化钛的制备方法,其特征在于:所述步骤c中溶液保存在水热反应釜中在恒温鼓风干燥箱中进行反应。
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CN102500349A (zh) * | 2011-10-11 | 2012-06-20 | 华东理工大学 | 一种花状二氧化钛微球光催化材料及其制备方法 |
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