CN110180521A - 一种碳量子点/二氧化钛纳米复合材料的制备方法 - Google Patents
一种碳量子点/二氧化钛纳米复合材料的制备方法 Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 150000001875 compounds Chemical class 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 title claims abstract description 31
- 239000012071 phase Substances 0.000 claims abstract description 22
- 239000008346 aqueous phase Substances 0.000 claims abstract description 16
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000013019 agitation Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
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- 238000001035 drying Methods 0.000 claims abstract description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims abstract description 7
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000002086 nanomaterial Substances 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 4
- 239000008103 glucose Substances 0.000 claims description 4
- 229920000463 Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) Polymers 0.000 claims description 3
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- 239000011668 ascorbic acid Substances 0.000 claims description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 229920000428 triblock copolymer Polymers 0.000 claims description 3
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- 239000002253 acid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims description 2
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- 239000010936 titanium Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
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- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 abstract description 5
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- 235000012141 vanillin Nutrition 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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Abstract
本发明公开了一种碳量子点/二氧化钛纳米复合材料的制备方法,技术方案为:首先称取碳源和去离子水,搅拌溶解,高温加热反应,制得碳量子点溶液,将其稀释作为水相溶液;称取F127、钛酸丁酯、四氢呋喃溶液,混合均匀,作为油相溶液;将制备好的油相溶液缓慢滴加到配置好的水相溶液中,磁力搅拌,离心干燥,得到碳量子点/二氧化钛纳米复合材料。本发明使用界面聚合法,该方法工艺简单,反应条件温和,聚合反应速度快且无需复杂设备,并且可以制备出一种微胶囊结构的碳量子点/二氧化钛纳米复合材料。
Description
技术领域
本发明属于纳米复合材料领域,具体涉及一种碳量子点/二氧化钛纳米复合材料的制备方法。
背景技术
无机粒子二氧化钛是一种无毒且性质稳定的氧化物,它有着很强的粘附力,不易引起化学变化,具有较好的耐腐蚀性。同时,二氧化钛具有高折光性和高光活性,这可以使其拥有了很强的防晒机理,有着强抗紫外线能力。由于二氧化钛的亲水性较强,且又是性质稳定的无机物,因此它有着防污能力和自洁净能力,是一种极其重要的环保型材料。但是,在可见光照下,由于二氧化钛的带隙过宽,其光催化活性较低[Yu Hongtao,XieQuan.Nano-heterojunction photocata-lytic materials in environmental pollutioncontrolling [J].Progress in Chenistry ,2009,21:406-419.Liang Fengxia,Kelly TL,Luo Linbao,et al.Self-cleaning organic vapor sensor based on a nanoporousTiO2 interfaces,2012,4:4177-4183. Sharma S D,Saini K K,Kant C,etal.Photodegradation of dye pollutant under UV light by nanocatalyst dopedtitania thin film [J].Applied Catalysis B:Environmental,2008,84:233-240]。
碳量子点具有优秀的光学性质,良好的水溶性、低毒性、环境友好、原料来源广、成本低、生物相容性好等诸多优点。碳量子点和二氧化钛的复合是当前用来提高二氧化钛光催化效率的一种有效方法。复合方法多集中在溶剂热处理法、电化学沉积法、物理混合法[王春来, 李钒, 杨焜, et al. 碳量子点-二氧化钛复合光催化剂的研究进展[J]. 材料导报, 2018, 32(19):71-80.]。界面聚合法操作简单,聚合反应速度快且无复杂设备。截至目前,以界面聚合的方式将碳量子点和二氧化钛进行复合的研究还鲜见报道。
发明人所在课题组前期采用界面聚合法制备缓香型壳聚糖基SiO2纳米胶囊,并将其作为涂层材料应用于皮革和织物表面,获得一种香味持久性较好的缓香产物[FacileSynthesis of Chitosan-Coated Silica Nanocapsules via Interfacial CondensationApproach for Sustained Release of Vanillin[J]. Industrial & EngineeringChemistry Research, 2018, 57(18):6171-6179.]。
基于前期研究基础,本发明提出将碳量子点和二氧化钛通过界面聚合法制备出具有良好光催化性能的碳量子点/二氧化钛纳米复合材料,对于提高二氧化钛的光催化性能以及扩宽碳量子点的应用领域具有重要意义。该材料有望应用于太阳能电池、降解污物、抗菌等领域。
现有的碳量子点/二氧化钛纳米复合材料,使用水热反应、阵列原位复合等,其制备方法复杂,制备条件要求高。
发明内容
本发明的目的是要提供一种碳量子点/二氧化钛纳米复合材料的制备方法,克服现有碳量子点/二氧化钛纳米复合材料制备方法复杂,制备条件要求高的缺点。
为了达到上述目的,本发明提供的一种碳量子点/二氧化钛纳米复合材料的制备方法,依次包括以下步骤:
步骤一、碳量子点溶液的制备:
称取碳源4.0-6.0g,去离子水40-60mL,搅拌溶解,倒入高压反应釜中,高温160-200℃,加热5h,制得水溶性碳量子点溶液;
步骤二、水相溶液的制备:
取步骤一中制得的水溶性碳量子点水溶液1mL,将其稀释10-100倍,作为水相溶液;
步骤三、油相溶液的制备:
称取0.065-0.085g的非离子表面活性剂PEO-PPO-PEO三嵌段共聚物F127,30-70uL的钛酸丁酯, 900uL-1800uL的四氢呋喃溶液,通过磁力搅拌使其混合均匀,制得均匀的油相溶液;
步骤四、碳量子点/二氧化钛纳米复合材料的制备:
将步骤三制得的油相溶液缓慢滴加到步骤二制得的水相溶液中,磁力搅拌0.5-5h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
步骤一中,碳源为柠檬酸、葡萄糖或抗坏血酸。
步骤四中,滴加速度为每滴间隔1~5s。
与现有技术相比,本发明的有益效果是:
本发明使用界面聚合法,该方法工艺简单,反应条件温和,聚合反应速度快且无需复杂设备,并且可以制备出一种微胶囊结构的碳量子点/二氧化钛纳米复合材料。
具体实施方式
下面将结合具体实施例对本发明作进一步详细的描述,但本发明的实施方式包括但不限于以下实施例表示的范围。
本发明采用界面聚合法,提供一种碳量子点/二氧化钛纳米复合材料的制备方法,具体步骤为:
步骤一、碳量子点溶液的制备:
称取碳源4.0-6.0g,去离子水40-60mL,倒入烧杯中,搅拌使它们充分溶解,倒入高压反应釜中,高温160-200℃,加热5h,制备出水溶性碳量子点溶液;碳源为柠檬酸、葡萄糖或抗坏血酸。
步骤二、水相溶液的制备:
取步骤一中制备的水溶性碳量子点水溶液1mL,将其稀释10-100倍,作为水相。
步骤三、油相溶液的制备:
称取0.065-0.085g的非离子表面活性剂PEO-PPO-PEO三嵌段共聚物F127,用移液枪量取30-70uL的钛酸丁酯,量取900uL-1800uL的四氢呋喃溶液,倒入25mL的样品瓶中,通过磁力搅拌使其混合均匀,形成均匀的油相溶液。
步骤四、碳量子点/二氧化钛纳米复合材料的制备:
将制备好的油相溶液缓慢滴加到配置好的水相溶液中,滴加速度为每滴间隔1~5s,磁力搅拌0.5-5h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
实施例1
步骤一:碳量子点溶液的制备
称取柠檬酸4.0g,去离子水40mL,倒入烧杯中,搅拌使它们充分溶解,倒入高压反应釜中,高温160℃,加热5h,制备出水溶性碳量子点溶液。
步骤二:水相溶液的制备
取步骤一中制备的水溶性碳量子点水溶液1mL,将其稀释10倍,作为水相。
步骤三:油相溶液的制备
称取0.065g的F127,用移液枪量取30uL的钛酸丁酯,量取900uL的四氢呋喃溶液,倒入25mL的样品瓶中,通过磁力搅拌使其混合均匀,形成均匀的油相溶液。
步骤四:
将制备好的油相溶液缓慢滴加(滴加速度为1s每滴)到配置好的水相溶液中,磁力搅拌0.5h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
实施例2
步骤一:碳量子点溶液的制备
称取葡萄糖5.0g,去离子水50mL,倒入烧杯中,搅拌使它们充分溶解,倒入高压反应釜中,高温200℃,加热5h,制备出水溶性碳量子点溶液。
步骤二:水相溶液的制备
取步骤一中制备的水溶性碳量子点水溶液1mL,将其稀释50倍,作为水相。
步骤三:油相溶液的制备
称取0.075g的F127,用移液枪量取50uL的钛酸丁酯,量取1200uL的四氢呋喃溶液,倒入25mL的样品瓶中,通过磁力搅拌使其混合均匀,形成均匀的油相溶液。
步骤四:
将制备好的油相溶液缓慢滴加(滴加速度为3s每滴)到配置好的水相溶液中,磁力搅拌2h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
实施例3
步骤一:碳量子点溶液的制备
称取抗坏血酸6.0g,去离子水60mL,倒入烧杯中,搅拌使它们充分溶解,倒入高压反应釜中,高温200℃,加热5h,制备出水溶性碳量子点溶液。
步骤二:水相溶液的制备
取步骤一中制备的水溶性碳量子点水溶液1mL,将其稀释100倍,作为水相。
步骤三:油相溶液的制备
称取0.085g的F127,用移液枪量取70uL的钛酸丁酯,量取1800uL的四氢呋喃溶液,倒入25mL的样品瓶中,通过磁力搅拌使其混合均匀,形成均匀的油相溶液。
步骤四:
将制备好的油相溶液缓慢滴加(滴加速度为5s每滴)到配置好的水相溶液中,磁力搅拌5h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
本发明的内容不限于实施例所列举,本领域普通技术人员通过阅读本发明说明书而对本发明技术方案采取的任何等效的变换,皆为本发明的权利要求所涵盖。
Claims (3)
1.一种碳量子点/二氧化钛纳米复合材料的制备方法,其特征在于:
依次包括以下步骤:
步骤一、碳量子点溶液的制备:
称取碳源4.0-6.0g,去离子水40-60mL,搅拌溶解,倒入高压反应釜中,高温160-200℃,加热5h,制得水溶性碳量子点溶液;
步骤二、水相溶液的制备:
取步骤一中制得的水溶性碳量子点水溶液1mL,将其稀释10-100倍,作为水相溶液;
步骤三、油相溶液的制备:
称取0.065-0.085g的非离子表面活性剂PEO-PPO-PEO三嵌段共聚物F127,30-70uL的钛酸丁酯, 900uL-1800uL的四氢呋喃溶液,通过磁力搅拌使其混合均匀,制得均匀的油相溶液;
步骤四、碳量子点/二氧化钛纳米复合材料的制备:
将步骤三制得的油相溶液缓慢滴加到步骤二制得的水相溶液中,磁力搅拌0.5-5h,形成二者复合的纳米材料溶液,通过离心干燥,得到碳量子点/二氧化钛纳米复合材料。
2.根据权利要求1所述的一种碳量子点/二氧化钛纳米复合材料的制备方法,其特征在于:
步骤一中,碳源为柠檬酸、葡萄糖或抗坏血酸。
3.根据权利要求2所述的一种碳量子点/二氧化钛纳米复合材料的制备方法,其特征在于:
步骤四中,滴加速度为每滴间隔1~5s。
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