CN112570027A - 基于银/金属有机骨架/氮化碳复合光催化剂的制备方法、材料结构及其应用 - Google Patents
基于银/金属有机骨架/氮化碳复合光催化剂的制备方法、材料结构及其应用 Download PDFInfo
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Abstract
本发明涉及一种基于银/金属有机骨架/氮化碳复合光催化剂的制备方法、材料结构及其应用制备方法:首先利用马弗炉对三聚氰胺进行煅烧合成纯g‑C3N4;其次,利用均苯三甲酸、醋酸铜以及纯g‑C3N4,已原位生长法合成HKUST‑1/g‑C3N4;最后Ag/HKUST‑1/g‑C3N4(AHC)复合材料的制备过程。本复合材料应用于选择性吸附、分离H2、N2、O2、CO2、CH4气体,以及选择性吸附、分离、光催化降解有机染料和酚类内分泌干扰物方面。本合成方法具有重复性强、产率高、产品性能稳定等特点。
Description
技术领域
本发明属于可见光下催化降解水中有机污染物领域,具体地说是一种基于银 /金属有机骨架/氮化碳复合光催化剂的制备方法、材料结构及其应用。
背景技术
随着全球性环境恶化日益突出,对环境污染物的有效控制与治理已成为世界 各国所面临和亟待解决的重大课题。通过科学家的不懈努力,发现利用半导体光 催化剂降解水中有机污染物可以解决这类问题,而利用吸附性良好的纳米材料也 可以提高去除水中有机污染物的速率。为此,将吸附性能良好的纳米材料与半导 体光催化剂复合,有望成为新的高效节能的环境污染治理技术。
近年来,一种具备类石墨烯结构的碳材料氮化碳(g-C3N4)半导体材料在光 催化降解水中污染物的领域中被大量的研究和报道;g-C3N4作为一种碳基材料, 不仅具有制备原料来源广,价格便宜,制备方法简单且易于工业化等特点,而且 由于它的禁带宽度为2.7eV,能够被可见光激发,可以吸收可见光进行光催化降 解(X.Wang,K.Maeda,A.Thomas,K.Takanabe,G.Xin,J.M.Carlsson,K.Domen,Nat.Mater. 2009,8,76;S.Bai,X.Wang,X.Hu,M.Xie,J.Jiang,Y.Xiong,Chem.Commun.2014,50,6094; J.M.Hu,W.D.Cheng,S.P.Huang,D.S.Wu,Z.Xie,Appl.Phys.Lett.2006,89,261117)。然而, 单组分光催化剂的光生电子和空穴容易相互复合,这导致光催化效率严重降低, 而Ag作为一种重要的助催化剂在提高催化剂性能领域被广泛应用。通过实验发 现Ag纳米粒子修饰的g-C3N4电子与空穴的复合率明显降低(S.W.Hu,L.W.Yang,Y. Tian,X.L.Wei,J.W.Ding,J.X.Zhong,P.K.Chu,App.Catal.BEnviron.2015,163,611)。但是 这类光催化剂在面对污水中低浓度、毒性较大的污染物时,降解效果还有待提高。 而MOFs材料作为一类重要的多孔材料,与传统的孔材料如沸石、介孔二氧化硅 及活性炭等相比,具有可调控的孔径尺寸及可修饰的孔道表面、超低密度、超高 比表面积、不溶于常见溶剂等特点,致其具备良好的吸附性(A.Dailly,E.Poirier, EnergyEnviron.Sci.2011,4,3527;F.J.Ma,S.X.Liu,C.Y.Sun,D.D.Liang,G.J.Ren,F.Wei, Y.G.Chen,Z.M.Su,J.Am.Chem.Soc.2011,133,4178;H.K.Chae,D.Y.Siberio-Perez,J.Kim, Y.Go,M.Eddaoudi,A.J.Matzger,M.O’Keeffe,O.M.Yaghi,Nature 2004,427,523),因此将 其与半导体光催化剂复合,可以使催化剂具备良好的吸附性,将污水中低浓度高 毒污染物吸附在半导体光催化剂表面,同时利用MOFs材料良好的传输电子能力, 可以进一步降低电子与空穴的复合率,从而提高光催化降解效率。据调研,迄今 为止,将Ag纳米粒子与HKUST-1/g-C3N4进行复合的材料还未见报道。
发明内容
本发明的目的是要提供一种基于银/金属有机骨架/氮化碳复合光催化剂的制 备方法、材料结构及其应用,使其在保持自身的吸附性质外,又具备了更加良好 的催化性质。
本发明的技术方案是:
基于银/金属有机骨架/氮化碳复合光催化剂,利用原位生长法以及光沉积技 术将不规则的Ag纳米粒子和HKUST-1颗粒离散地复合在g-C3N4纳米片表面。
基于银/金属有机骨架/氮化碳复合光催化剂的制备方法,包括以下步骤:
步骤1:称取一定量三聚氰胺于坩埚内并将其放入马弗炉中煅烧,室温下取 出,研磨,得到产物g-C3N4;
步骤2:室温下,0.021-0.21g均苯三甲酸溶解于30-300mL乙醇中,将一 定量g-C3N4固体粉末倒入其中,超声分散后得到均匀悬浊液A,0.03-0.3g醋酸 铜溶解于水-醋酸的混合溶剂中,水-醋酸的混合溶剂中H2O,30-300mL,acetic acid,3-30mL,得到溶液B;在高速搅拌下,将悬浊液A倾入溶液B中,继续 搅拌1-2小时,之后以10000rpm/min的速率离心收集,分别用乙醇和丙酮洗涤 数次后干燥,得到产物HKUST-1/g-C3N4;
步骤3:将一定量HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声 分散后加入1-5mL,5-10%PEG并搅拌10min,将一定浓度的AgNO3溶液加入其 中,用250W氙灯照射1小时,产物以10000rpm/10min的速率离心收集,用 乙醇洗涤数次,加热蒸发乙醇,烘干得到产物AHC。
基于银/金属有机骨架/氮化碳复合光催化剂应用在选择性吸附、分离H2、N2、 O2、CO2、CH4气体,以及选择性吸附、分离、光催化降解有机染料和酚类内分泌 干扰物方面。
本发明的有益效果是:
1.利用原位生长法以及光沉积技术合成Ag纳米粒子修饰的 HKUST-1/g-C3N4复合材料AHC,金属Ag的加入,给光生电子和空穴提供了有 效的分离平台,有效抑制电子空穴的复合,进一步提高了半导体的可见光催化性 能;
2.g-C3N4是一种非金属N型半导体,具有良好的化学稳定性、热稳定性以 及光电特性,其禁带宽度为2.7eV,是一种新型的可见光催化剂,因此在实际应 用过程中可结合太阳光以实现Ag/HKUST-1/污染物系统光催化降解的高效催化 机制;
3.Ag/HKUST-1/g-C3N4对污染物有很好的催化活性,且便于从溶液中分离, 在处理废水中的难降解有机物领域有广阔的应用前景;
4.本发明工艺简单,重复性好,产率较高,符合绿色化学要求。该合成方 法具有重复性好、产率高、产品性能稳定的优点。
附图说明
图1为XPS图谱,全谱(a),Ag 3d(b),Cu 2p(c),O 1s(d),C 1s(e),N 1s (f)。
图2(a)为纯g-C3N4的透射电子显微镜图;
(图2b,图2c)为5%AHC的透射电子显微镜图。
图3为瞬时光电流谱图。
图4(a)为暗吸附-脱附罗丹明B的效果图;
(图4b)和(图4c)为可见光条件下光催化降解罗丹明B的效果图。
具体实施方式
本发明涉及碳基材料g-C3N4与金属有机骨架材料(MOFs),特指用原位生 长法以及光沉积技术合成Ag/HKUST-1/g-C3N4(AHC)复合材料,用于可见光下 催化降解水中有机污染物。以AgNO3、Cu(NO3)2、均苯三甲酸、三聚氰胺为原 料,利用原位生长法以及光沉积技术合成Ag纳米粒子修饰的HKUST-1/g-C3N4复合材料AHC。
本发明提供的一种可见光响应的AHC复合材料的制备方法,包括以下步骤:
(1)称取一定量三聚氰胺于坩埚中并放入马弗炉中以2~10℃/min升温至 500~600℃,并保持该温度下3~5小时,室温下取出,研磨,得到产 物g-C3N4。
(2)将均苯三甲酸(0.1~0.5~1.0mmol,0.021~0.1~0.21g)溶解于 30~100~300mL乙醇中,然后将一定量g-C3N4固体粉末倒入其中, 超声分散后得到均匀悬浊液A;
醋酸铜(0.15~1.0~1.5mmol,0.03~0.1~0.3g)溶解于水-醋酸的混合溶 剂中(H2O,30~100~300mL;acetic acid,3~10~30mL),得到溶液B; 在高速搅拌下,将悬浊液A倾入溶液B中,继续搅拌1~2小时,之 后离心收集(10000rpm,1min)。分别用乙醇和丙酮洗涤数次后干燥, 得到产物HKUST-1/g-C3N4。
(3)将一定量HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声 分散,之后加入1~5mL,5~10%PEG,搅拌10min后将一定浓度的 AgNO3溶液加入其中,用250W氙灯照射1小时,产物离心收集 (10000rpm,10min),用乙醇洗涤数次,最后在60~80℃下干燥 24小时,得到产物AHC。
通过对AgNO3溶液浓度的控制分别制得Ag修饰HKUST-1/g-C3N4样品的质 量分数比是4~7%。
本发明中AHC复合材料的组成由X-射线光电子能谱(XPS)确定,XPS谱 图中出现了Ag、Cu、O、C和N的特征峰;该图谱表明,由上述方法合成所制 备的AHC复合材料含有其所具有的所有元素。
通过透射电子显微镜(TEM)我们可以看到Ag纳米粒子与HKUST-1均匀 的负载在g-C3N4表面。
本发明的另一个目的:将复合材料AHC作为光催化材料用于可见光下催化 降解水中有机污染物。
下面结合实施例对本发明进行详细说明,以使本领域技术人员更好地理解本 发明,但本发明并不局限于以下实施例。
实施例1
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以2.3℃/min升温至500 ℃,并保持该温度下3小时,室温下取出,研磨,得到产物g-C3N4。
(B)室温下,均苯三甲酸(0.1mmol,0.021g)溶解于30mL乙醇中,然 后将0.5g g-C3N4固体粉末倒入其中,超声分散30分钟后得到均匀悬 浊液A;
醋酸铜(0.15mmol,0.030g)溶解于水-醋酸的混合溶剂中(H2O, 30mL;aceticacid,3mL),得到溶液B;在高速搅拌下,将悬浊液 A倾入溶液B中,继续搅拌1小时,之后离心收集(10000rpm,1min)。 用乙醇洗涤数次后用丙酮置换数次,分别用乙醇和丙酮洗涤数次后干 燥,得到产物HKUST-1/g-C3N4。
实施例2
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以4.6℃/min升温至550 ℃,并保持该温度下4小时,室温下取出,研磨,得到产物g-C3N4。
(B)称取0.5g g-C3N4固体粉末加入到200mL去离子中,超声分散30分 钟,之后加入1mL,5%PEG,搅拌10min后将5mL,0.046mol/L 的AgNO3溶液加入其中,用250W氙灯照射1小时,产物离心收集 (10000rpm,10min),用乙醇洗涤数次,最后在60℃下干燥24小 时,得到产物5%Ag/g-C3N4。
实施例3
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以5℃/min升温至550 ℃,并保持该温度下4小时,室温下取出,研磨,得到产物g-C3N4。
(B)室温下,均苯三甲酸(0.3mmol,0.063g)溶解于90mL乙醇中,然 后将0.5g g-C3N4固体粉末倒入其中,超声分散30分钟后得到均匀悬 浊液A;
醋酸铜(0.45mmol,0.090g)溶解于水-醋酸的混合溶剂中(H2O, 90mL;aceticacid,9mL),得到溶液B;在高速搅拌下,将悬浊液 A倾入溶液B中,继续搅拌1小时,之后离心收集(10000rpm,1min)。 用乙醇洗涤数次后用丙酮置换数次,分别用乙醇和丙酮洗涤数次后干 燥,得到产物HKUST-1/g-C3N4。
(C)将0.5g HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声分 散30分钟,之后加入3mL,7%PEG,搅拌10min后将5mL,0.036 mol/L的AgNO3溶液加入其中,用250W氙灯照射1小时,产物离 心收集(10000rpm,10min),用乙醇洗涤数次,最后在60℃下干 燥24小时,得到产物4%AHC。
实施例4
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以6.2℃/min升温至560 ℃,并保持该温度下4小时,室温下取出,研磨,得到产物g-C3N4。
(B)室温下,均苯三甲酸(0.5mmol,0.105g)溶解于150mL乙醇中, 然后将0.5g g-C3N4固体粉末倒入其中,超声分散30分钟后得到均匀 悬浊液A;
醋酸铜(0.75mmol,0.150g)溶解于水-醋酸的混合溶剂中(H2O, 150mL;aceticacid,15mL),得到溶液B;在高速搅拌下,将悬浊 液A倾入溶液B中,继续搅拌1小时,之后离心收集(10000rpm, 1min)。用乙醇洗涤数次后用丙酮置换数次,分别用乙醇和丙酮洗涤 数次后干燥,得到产物HKUST-1/g-C3N4。
(C)将0.5g HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声分 散30分钟,之后加入4mL,6%PEG,搅拌10min后将5mL,0.046 mol/L的AgNO3溶液加入其中,用250W氙灯照射1小时,产物离 心收集(10000rpm,10min),用乙醇洗涤数次,最后在65℃下干 燥24小时,得到产物5%AHC。
实施例5
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以7.8℃/min升温至580 ℃,并保持该温度下4.5小时,室温下取出,研磨,得到产物g-C3N4。
(B)室温下,均苯三甲酸(0.6mmol,0.126g)溶解于240mL乙醇中, 然后将0.5g g-C3N4固体粉末倒入其中,超声分散30分钟后得到均匀 悬浊液A;
醋酸铜(0.90mmol,0.180g)溶解于水-醋酸的混合溶剂中(H2O, 180mL;aceticacid,18mL),得到溶液B;在高速搅拌下,将悬浊 液A倾入溶液B中,继续搅拌1小时,之后离心收集(10000rpm, 1min)。用乙醇洗涤数次后用丙酮置换数次,分别用乙醇和丙酮洗涤 数次后干燥,得到产物HKUST-1/g-C3N4。
(C)将0.5g HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声分 散30分钟,之后加入5mL,7%PEG,搅拌10min后将5mL,0.055 mol/L的AgNO3溶液加入其中,用250W氙灯照射1小时,产物离 心收集(10000rpm,10min),用乙醇洗涤数次,最后在70℃下干 燥24小时,得到产物6%AHC。
实施例6
(A)称取10g三聚氰胺于坩埚中并放入马弗炉中以10℃/min升温至600 ℃,并保持该温度下5小时,室温下取出,研磨,得到产物g-C3N4。
(B)室温下,均苯三甲酸(1.0mmol,0.210g)溶解于300mL乙醇中, 然后将0.5g g-C3N4固体粉末倒入其中,超声分散30分钟后得到均匀 悬浊液A;
醋酸铜(1.50mmol,0.30g)溶解于水-醋酸的混合溶剂中(H2O,300 mL;aceticacid,30mL),得到溶液B;在高速搅拌下,将悬浊液A 倾入溶液B中,继续搅拌1小时,之后离心收集(10000rpm,1min)。 用乙醇洗涤数次后用丙酮置换数次,分别用乙醇和丙酮洗涤数次后干 燥,得到产物HKUST-1/g-C3N4。
(C)将0.5g HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声分 散30分钟,之后加入5mL,10%PEG,搅拌10min后将5mL,0.064 mol/L的AgNO3溶液加入其中,用250W氙灯照射1小时,产物离 心收集(10000rpm,10min),用乙醇洗涤数次,最后在80℃下干燥 24小时,得到产物7%AHC。
Claims (6)
1.一种基于银/金属有机骨架/氮化碳复合光催化剂,其特征在于:利用原位生长法以及光沉积技术将不规则的Ag纳米粒子和HKUST-1颗粒离散地复合在g-C3N4纳米片表面。
2.根据权利要求1所述的一种基于银/金属有机骨架/氮化碳复合光催化剂的制备方法,其特征在于包括以下步骤:
步骤1:称取一定量三聚氰胺于坩埚内并将其放入马弗炉中煅烧,室温下取出,研磨,得到产物g-C3N4;
步骤2:室温下,0.021-0.21g均苯三甲酸溶解于30-300mL乙醇中,将一定量g-C3N4固体粉末倒入其中,超声分散后得到均匀悬浊液A,0.03-0.3g醋酸铜溶解于水-醋酸的混合溶剂中,水-醋酸的混合溶剂中H2O,30-300mL,acetic acid,3-30mL,得到溶液B;在高速搅拌下,将悬浊液A倾入溶液B中,继续搅拌1-2小时,之后以10000rpm/min的速率离心收集,分别用乙醇和丙酮洗涤数次后干燥,得到产物HKUST-1/g-C3N4;
步骤3:将一定量HKUST-1/g-C3N4固体粉末加入到200mL去离子中,超声分散后加入1-5mL,5-10%PEG并搅拌10min,将一定浓度的AgNO3溶液加入其中,用250W氙灯照射1小时,产物以10000rpm/10min的速率离心收集,用乙醇洗涤数次,加热蒸发乙醇,烘干得到产物AHC。
3.根据权利要求2所述的一种一种基于银/金属有机骨架/氮化碳复合光催化剂的制备方法,其特征在于:步骤1中,所述的升温速率为以2-10℃/min,煅烧温度为500-600℃,煅烧时间为3-5小时。
4.根据权利要求2所述的一种基于银/金属有机骨架/氮化碳复合光催化剂的制备方法,其特征在于:步骤2中,所述的g-C3N4用量为0.5-1.0g,超声分散时间为30-90分钟。
5.根据权利要求2所述的一种基于银/金属有机骨架/氮化碳复合光催化剂的制备方法,其特征在于:步骤3中,所述的HKUST-1/g-C3N4用量为0.5-1.0g,超声分散时间为30-90分钟,AgNO3溶液的浓度为0.036-0.064mol/L,所述的加热温度为60-80℃,干燥时间为15-24小时。
6.根据权利要求1-5任意一项所述的基于银/金属有机骨架/氮化碳复合光催化剂应用在选择性吸附、分离H2、N2、O2、CO2、CH4气体,以及选择性吸附、分离、光催化降解有机染料和酚类内分泌干扰物方面。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104722335A (zh) * | 2015-01-30 | 2015-06-24 | 湖南大学 | 石墨型氮化碳-金属有机框架复合光催化剂及其制备方法和应用 |
CN106694044A (zh) * | 2016-11-21 | 2017-05-24 | 吉林师范大学 | 一种氮化碳/银/Cu‑BTC光催化剂的制备方法 |
CN107589160A (zh) * | 2017-09-05 | 2018-01-16 | 济南大学 | 一种基于mof的三元纳米复合材料的制备方法和应用 |
KR20190032027A (ko) * | 2017-09-19 | 2019-03-27 | 한국과학기술원 | 소수성 금속유기구조체-탄소질화물 복합체 제조방법 |
CN109590022A (zh) * | 2018-12-13 | 2019-04-09 | 常州大学 | 层状UiO-66/g-C3N4/Ag复合材料的制备方法及应用 |
-
2019
- 2019-09-30 CN CN201910943865.4A patent/CN112570027B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104722335A (zh) * | 2015-01-30 | 2015-06-24 | 湖南大学 | 石墨型氮化碳-金属有机框架复合光催化剂及其制备方法和应用 |
CN106694044A (zh) * | 2016-11-21 | 2017-05-24 | 吉林师范大学 | 一种氮化碳/银/Cu‑BTC光催化剂的制备方法 |
CN107589160A (zh) * | 2017-09-05 | 2018-01-16 | 济南大学 | 一种基于mof的三元纳米复合材料的制备方法和应用 |
KR20190032027A (ko) * | 2017-09-19 | 2019-03-27 | 한국과학기술원 | 소수성 금속유기구조체-탄소질화물 복합체 제조방법 |
CN109590022A (zh) * | 2018-12-13 | 2019-04-09 | 常州大学 | 层状UiO-66/g-C3N4/Ag复合材料的制备方法及应用 |
Non-Patent Citations (2)
Title |
---|
YU QIAO: "Construction of novel Ag/HKUST-1/g-C3N4 towards enhanced photocatalytic activity for the degradation of pollutants under visible light", 《RSC ADV.》 * |
赵新宇: "MOF衍化TiO2修饰石墨相氮化碳的光催化性能研究", 《天津大学学报》 * |
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