CN115041182A - 一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 - Google Patents
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 Download PDFInfo
- Publication number
- CN115041182A CN115041182A CN202210853822.9A CN202210853822A CN115041182A CN 115041182 A CN115041182 A CN 115041182A CN 202210853822 A CN202210853822 A CN 202210853822A CN 115041182 A CN115041182 A CN 115041182A
- Authority
- CN
- China
- Prior art keywords
- moo
- srfe
- solution
- deionized water
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000011206 ternary composite Substances 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000001699 photocatalysis Effects 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 53
- 239000008367 deionised water Substances 0.000 claims description 29
- 229910021641 deionized water Inorganic materials 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000002243 precursor Substances 0.000 claims description 26
- 238000001914 filtration Methods 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- 239000012065 filter cake Substances 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 13
- 239000011259 mixed solution Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 229910021617 Indium monochloride Inorganic materials 0.000 claims description 4
- APHGZSBLRQFRCA-UHFFFAOYSA-M indium(1+);chloride Chemical compound [In]Cl APHGZSBLRQFRCA-UHFFFAOYSA-M 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 239000008364 bulk solution Substances 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 14
- 238000006731 degradation reaction Methods 0.000 abstract description 14
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract description 6
- 229940043267 rhodamine b Drugs 0.000 abstract description 6
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 229910052724 xenon Inorganic materials 0.000 abstract description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 abstract 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 74
- 238000000034 method Methods 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 238000000862 absorption spectrum Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 239000004065 semiconductor 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
- 238000005516 engineering process Methods 0.000 description 3
- 238000003837 high-temperature calcination Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229960000907 methylthioninium chloride Drugs 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910017299 Mo—O Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 239000004098 Tetracycline Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011218 binary composite Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229960002180 tetracycline Drugs 0.000 description 1
- 229930101283 tetracycline Natural products 0.000 description 1
- 235000019364 tetracycline Nutrition 0.000 description 1
- 150000003522 tetracyclines Chemical class 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- 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
- B01J23/84—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 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
- B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/8874—Gallium, indium or thallium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
一种磁性三元复合光催化剂In‑MoO3/SrFe12O19的制备方法,其属于无机催化材料领域。本发明先制备了SrFe12O19和In‑MoO3,再通过简单的水热法得到了In‑MoO3/SrFe12O19复合光催化剂。该制备工艺流程简单,生产成本低,催化活性高,且能实现光催化剂在外加磁场下从液相悬浮体系中的分离和回收。在模拟太阳光氙灯照射下,0.03g制备的最优复合磁性光催化材料降解100mL浓度为10mg/L的罗丹明B溶液,70min时降解率达到96.5%。四次重复使用后,复合磁性光催化剂在相同降解条件下对罗丹明B溶液的降解率仍达90.8%,本发明制备出的产品可广泛用于光催化降解有机污染物的领域中。
Description
技术领域
本发明涉及一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,属于无机催化材料技术领域。
背景技术
作为一种高效的高级氧化工艺,半导体光催化技术具有反应条件温和、降解速率高和产物相对无毒害等特点,故依托该技术设计出安全高效且节能环保的半导体光催化材料,对有机废水的处理有着重要的学术意义和广阔的应用价值。作为常见的过渡金属氧化物,三氧化钼(MoO3)的活性较高且化学稳定性好,有四种晶型,包括:正交相α-MoO3、单斜相β-MoO3、六方相h-MoO3和高压单斜相MoO3-Ⅱ。其中,α-MoO3各向异性的层状结构,使其具有较高的化学稳定性,是其热力学稳定相。MoO3主要制备方法有水热法、溶胶-凝胶法、焙烧法和共沉淀法等。然而,单一光催化剂的活性尚未达到工业要求,反应后材料悬浮于体系中,难以二次利用,也制约了MoO3光催化剂的应用。与二元改性相比,三元复合改性能通过多步电荷转移进一步提高光生电子-空穴对的分离效率,进而有效提高材料的降解性能。作为ⅢA族金属元素,铟(In)的氧化态丰富,且d轨道为空,这使其具有可观的电子产生、捕获和迁移能力。将磁性半导体引入光催化剂中,构筑磁性复合光催化剂,是光催化剂分离和循环利用的关键。研究发现,硬磁性材料锶铁氧体(SrFe12O19)的磁稳定性好且饱和磁化强度高,比软磁性材料表现出更强的抗退磁能力;此外,SrFe12O19的带隙宽度较小(2.0eV),能对可见光响应。
目前,对MoO3的改性研究成果较多。如“Journal of Energy Chemistry”,2019年第10卷第2期“Nanostructured Fe,Co-Codoped MoO3 Thin Films”一文(对比文件1),以喷雾热解法制备了Fe-Co共掺杂的MoO3薄膜,经60min降解,对亚甲基蓝(MB)降解率由35%提升到90%。该方法的不足之处是:(1)复合光催化剂的活性提升有限,在模拟太阳光照射下,Fe和Co掺杂比例分别为2%和1%的共掺杂光催化剂60min对亚甲基蓝为90%;(2)复合催化剂存在回收困难问题,容易引发二次污染。又如,“PLOS ONE”2020年8月,15卷第8期“Novelmagnetic Fe3O4/g-C3N4/MoO3 nanocomposites with highly enhanced photocatalyticactivities:Visible-light-driven degradation of tetracycline from aqueousenvironment”一文(对比文件2),首先通过高温煅烧法分别合成MoO3和g-C3N4,然后在80℃下搅拌制得二元复合材料Fe3O4/g-C3N4,最后以高温煅烧法构筑Fe3O4/g-C3N4/MoO3。该方法的不足之处是:(1)制备过程多次采用高温煅烧工艺,能耗大;MoO3前驱体制备处于酸性条件,且焙烧均需在氮气保护下进行;(2)复合光催化剂活性有限,在1000W氙灯模拟太阳光下,120min对50mL四环素废水的降解率仅为94%;(3)未开展磁回收再利用活性测试,无法判断材料的重复使用性和稳定性。
发明内容
本发明针对MoO3回收困难和降解率不高的问题,提出联合采用In掺杂和SrFe12O19复合的方式对MoO3进行改性,以提高其催化活性。即提出了一种三元复合磁性光催化剂In-MoO3/SrFe12O19的制备方法,该制备工艺流程简单,生产成本低,催化活性高,且能实现光催化剂在外加磁场下从液相悬浮体系中的分离和回收。本发明磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法如下:
(1)SrFe12O19的制备
分别称取0.5332g的SrCl2·6H2O和2.1624g的FeCl3·6H2O,用20mL去离子水超声溶解10min得到混合液A;称取3.3598g的NaOH试剂,用15mL去离子水超声溶解得到溶液B;30min连续磁力搅拌下,将B液缓慢滴加到A液中,得到棕褐色前驱体溶液C;将前驱体溶液C移入50mL高压反应釜,200℃下反应24h,自然冷却至室温,过滤,滤饼用去离子水和稀盐酸交替洗至中性后,置于80℃烘箱下烘干12h,取出研磨,得到深棕色粉末状SrFe12O19。
(2)In-MoO3的制备
称取1.5g的(NH4)6Mo7O24·4H2O和0.1644g的InCl3·H2O,用39mL去离子水超声溶解形成溶液A;将21mL浓度为3mol/L的稀硝酸溶液缓慢加入溶液A中,继续机械搅拌10min,得到均一透明的前驱体溶液B;将前驱体溶液B置于100mL高压反应釜密闭中,180℃反应20h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗后,置于80℃烘箱中干燥12h,研磨得到白色粉末状的In-MoO3。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为3wt%~20wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19。
本发明采用上述技术方案,主要有以下效果:
(1)本发明方法制备的In-MoO3/SrFe12O19复合磁性光催化剂具有较高的光催化活性,在模拟太阳光的氙灯照射下,0.03g制备的最优复合磁性光催化剂降解100mL、浓度为10mg/L的罗丹明B溶液,光照70min后降解率达到96.5%(明显高于对比文件1和对比文件2中的降解率)。
(2)本发明采用水热制备,复合光催化材料比表面积达10.15m2/g,制备方法简单,所需设备少,成本低。
(3)本发明方法制备的MoO3/SrFe12O19复合光催化材料可在外加磁场下进行回收,四次重复使用后对罗丹明B溶液的降解率达90.8%。
附图说明
图1为SrFe12O19、MoO3、In-MoO3和In-MoO3/SrFe12O19的X射线衍射图。
图2为SrFe12O19、MoO3、In-MoO3和In-MoO3/SrFe12O19的FT-IR图。
图3为SrFe12O19、MoO3、In-MoO3和In-MoO3/SrFe12O19的SEM图。
图4为SrFe12O19、MoO3、In-MoO3和In-MoO3/SrFe12O19的降解率图。
具体实施方式
下面结合具体实施方式,进一步说明本发明。
实施例1
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,具体步骤如下:
(1)SrFe12O19的制备
分别称取0.5332g的SrCl2·6H2O和2.1624g的FeCl3·6H2O,用20mL去离子水超声溶解10min得到混合液A;称取3.3598g的NaOH试剂,用15mL去离子水超声溶解得到溶液B;30min连续磁力搅拌下,将B液缓慢滴加到A液中,得到棕褐色前驱体溶液C;将前驱体溶液C移入50mL高压反应釜,200℃下反应24h,自然冷却至室温,过滤,滤饼用去离子水和稀盐酸交替洗至中性后,置于80℃烘箱下烘干12h,取出研磨,得到深棕色粉末状SrFe12O19。
(2)In-MoO3的制备
称取1.5g的(NH4)6Mo7O24·4H2O和0.1644g的InCl3·H2O,用39mL去离子水超声溶解形成溶液A;将21mL浓度为3mol/L的稀硝酸溶液缓慢加入溶液A中,继续机械搅拌10min,得到均一透明的前驱体溶液B;将前驱体溶液B置于100mL高压反应釜密闭中,180℃反应20h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗后,置于80℃烘箱中干燥12h,研磨得到白色粉末状的In-MoO3。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为3wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19(5-IMS-3)。
实施例2
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,具体步骤如下:
(1)同实施例1中(1)。
(2)同实施例1中(2)。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为5wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19(5-IMS-5)。
实施例3
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,具体步骤如下:
(1)同实施例1中(1)。
(2)同实施例1中(2)。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为10wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19(5-IMS-10)。
实施例4
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,具体步骤如下:
(1)同实施例1中(1)。
(2)同实施例1中(2)。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为15wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19(5-IMS-15)。
实施例5
一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,具体步骤如下:
(1)同实施例1中(1)。
(2)同实施例1中(2)。
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为20wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19(5-IMS-20)。
实验结果
实施例2制备的磁性复合光催化剂In-MoO3/SrFe12O19催化降解活性最佳。为了方便对比,制备了MoO3样品。MoO3制备方法为实施例(1)步骤(2)中不加入InCl3·H2O。
SrFe12O19的XRD如图1(a)所示,衍射角位于15.38°、23.15°、30.14°、31.04°、32.35°、34.24°、35.79°、37.18°、40.46°、42.59°、55.25°、56.85°、63.21°、67.67°和76.7°,分别对应于标准卡片中M型六方晶系SrFe12O19(JCPDS No.33-1340)的(004)、(006)、(110)、(008)、(107)、(114)、(108)、(203)、(205)、(206)、(217)、(2011)、(220)、(2014)和(1018)晶面。SrFe12O19的红外吸收光谱如图2(d)所示,位于435.26cm-1、550.65cm-1和587.21cm-1处的吸收峰归属于SrFe12O19的特征峰。
MoO3的XRD图如图1(d),衍射峰与JCPDS No.05-0508一致,分别归属于(020)、(110)、(040)、(021)、(060)、(200)、(210)和(0100)晶面,没有杂质峰,表明样品为纯相MoO3。MoO3的红外吸收光谱如图2(a),996.97cm-1、876.95cm-1和552.77cm-1处的峰值分别归属于Mo=O双键拉伸振动、Mo-O-Mo单键的拉伸振动和三配位氧(O-3Mo)的拉伸模式,证实了样品中存在MoO3的完整晶型。
In-MoO3的XRD图如图1(c),各衍射峰位置与纯相MoO3相对应,且无杂峰出现,说明通过水热法制备了纯度较高,能保持MoO3原有晶体结构的In-MoO3。In-MoO3的红外吸收光谱如图2(b)所示,In-MoO3与MoO3表现出相似的特征吸收振动,且无新的吸收峰出现,说明掺杂未改变MoO3的晶体结构。且In-MoO3样品的Mo-O-Mo单键的振动峰峰值(885.66cm-1)较纯相MoO3(876.95cm-1)发生偏移,红外透过率也略有增大。这说明Mo-O-Mo键两侧的Mo-O键键长受离子掺杂的影响,并引起了In-MoO3中Mo-O键键能的变化。说明制备的In-MoO3样品结构稳定,In3+离子通过部分取代MoO3的Mo6+离子进入MoO3晶格。
磁性三元复合光催化剂In-MoO3/SrFe12O19的XRD图如图1(b)所示,In-MoO3/SrFe12O19样品的衍射峰既有MoO3的衍射峰,也出现SrFe12O19的(107)和(114)晶面,且没有杂峰出现,表明水热法成功制备了In-MoO3/SrFe12O19复合磁性光催化剂。In-MoO3/SrFe12O19的红外吸收光谱如图2(c),996.97cm-1、876.95cm-1和552.77cm-1处是MoO3的吸收峰,436cm-1附近的微弱吸收归属于SrFe12O19的特征吸收峰,说明SrFe12O19成功负载。
SrFe12O19、MoO3、In-MoO3和In-MoO3/SrFe12O19的SEM图如图3所示。从图3(a)可以看出,SrFe12O19为六边形片状,图3(b)和图3(c)的MoO3和In-MoO3呈现条带状,图3(c)为In-MoO3/SrFe12O19的形貌图,可见具有条带状和六边形片状两种形貌,特征明显,说明采用水热法成功合成In-MoO3/SrFe12O19复合光催化剂。
光催化实验结果如图4所示,在300W氙灯照射下,0.03g制备的复合光催化剂5-IMS-5降解100mL浓度为10mg/L的罗丹明B溶液,光照70min的降解率达96.5%。且四次回收重复使用后,对罗丹明B的降解率仍能达到90.8%,说明本发明制备的磁性三元复合光催化剂In-MoO3/SrFe12O19具有较高的光催化活性和稳定性。
5-IMS-5的饱和磁化强度(Ms)为3.7emu/g,矫顽力(Hci)为1010.5Oe,矫顽力较SrFe12O19(963.3Oe)有明显提升,有利于材料的磁回收利用。
Claims (2)
1.一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法,其包括以下步骤:
(1)SrFe12O19的制备
分别称取0.5332g的SrCl2·6H2O和2.1624g的FeCl3·6H2O,用20mL去离子水超声溶解10min得到混合液A;称取3.3598g的NaOH试剂,用15mL去离子水超声溶解得到溶液B;30min连续磁力搅拌下,将B液缓慢滴加到A液中,得到棕褐色前驱体溶液C;将前驱体溶液C移入50mL高压反应釜,200℃下反应24h,自然冷却至室温,过滤,滤饼用去离子水和稀盐酸交替洗至中性后,置于80℃烘箱下烘干12h,取出研磨,得到深棕色粉末状SrFe12O19;
(2)In-MoO3的制备
称取1.5g的(NH4)6Mo7O24·4H2O和0.1644g的InCl3·H2O,用39mL去离子水超声溶解形成溶液A;将21mL浓度为3mol/L的稀硝酸溶液缓慢加入溶液A中,继续机械搅拌10min,得到均一透明的前驱体溶液B;将前驱体溶液B置于100mL高压反应釜密闭中,180℃反应20h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗后,置于80℃烘箱中干燥12h,研磨得到白色粉末状的In-MoO3;
(3)In-MoO3/SrFe12O19的制备
称取In-MoO3粉末0.1425g,用15mL去离子水超声溶解3min得到混合溶液A;按照理论生成SrFe12O19在复合物中的质量百分数为3wt%~20wt%,称取SrFe12O19粉末加入溶液A中,超声为30min,得到灰褐色的前驱体溶液B;将前驱体溶液B转移到50mL高压反应釜中,150℃反应4h,自然冷却至室温后过滤,滤饼用去离子水和无水乙醇交替抽滤润洗,置于80℃烘箱中干燥12h,取出研磨,得到浅灰色粉末状的In-MoO3/SrFe12O19。
2.根据权利要求1所述的In-MoO3/SrFe12O19复合光催化材料的制备方法,其特征在于提高单一MoO3催化活性的同时,使其通过外加磁场进行回收和利用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210853822.9A CN115041182B (zh) | 2022-07-12 | 2022-07-12 | 一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210853822.9A CN115041182B (zh) | 2022-07-12 | 2022-07-12 | 一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115041182A true CN115041182A (zh) | 2022-09-13 |
CN115041182B CN115041182B (zh) | 2023-06-09 |
Family
ID=83166757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210853822.9A Active CN115041182B (zh) | 2022-07-12 | 2022-07-12 | 一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115041182B (zh) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130313534A1 (en) * | 2012-05-24 | 2013-11-28 | Agency For Science, Technology And Research | Method of preparing molybdenum oxide films |
CN106391066A (zh) * | 2016-09-14 | 2017-02-15 | 南京航空航天大学 | 一种快速高效降解罗丹明b的复合光催化剂及其制备方法 |
CN108452813A (zh) * | 2018-03-23 | 2018-08-28 | 重庆大学 | 一种MoS2/SrFe12O19复合磁性光催化剂的制备方法 |
KR101952716B1 (ko) * | 2017-09-04 | 2019-02-27 | 경희대학교 산학협력단 | 금속/몰리브덴 산화물 나노입자의 제조방법 |
CN109449316A (zh) * | 2016-04-19 | 2019-03-08 | Tcl集团股份有限公司 | 一种In掺杂MoO3薄膜的制备方法 |
CN109529892A (zh) * | 2018-12-07 | 2019-03-29 | 秦明 | 一种纳米带状moa复合光催化剂制备方法 |
CN111974418A (zh) * | 2020-07-13 | 2020-11-24 | 重庆大学 | 一种制备三元复合磁性光催化材料MoS2/WO3/SrFe12O19的方法 |
CN113929142A (zh) * | 2021-10-28 | 2022-01-14 | 西北大学 | 一种MoO3、制备方法及其应用 |
-
2022
- 2022-07-12 CN CN202210853822.9A patent/CN115041182B/zh active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130313534A1 (en) * | 2012-05-24 | 2013-11-28 | Agency For Science, Technology And Research | Method of preparing molybdenum oxide films |
CN109449316A (zh) * | 2016-04-19 | 2019-03-08 | Tcl集团股份有限公司 | 一种In掺杂MoO3薄膜的制备方法 |
CN106391066A (zh) * | 2016-09-14 | 2017-02-15 | 南京航空航天大学 | 一种快速高效降解罗丹明b的复合光催化剂及其制备方法 |
KR101952716B1 (ko) * | 2017-09-04 | 2019-02-27 | 경희대학교 산학협력단 | 금속/몰리브덴 산화물 나노입자의 제조방법 |
CN108452813A (zh) * | 2018-03-23 | 2018-08-28 | 重庆大学 | 一种MoS2/SrFe12O19复合磁性光催化剂的制备方法 |
CN109529892A (zh) * | 2018-12-07 | 2019-03-29 | 秦明 | 一种纳米带状moa复合光催化剂制备方法 |
CN111974418A (zh) * | 2020-07-13 | 2020-11-24 | 重庆大学 | 一种制备三元复合磁性光催化材料MoS2/WO3/SrFe12O19的方法 |
CN113929142A (zh) * | 2021-10-28 | 2022-01-14 | 西北大学 | 一种MoO3、制备方法及其应用 |
Non-Patent Citations (6)
Title |
---|
BASHIR S等: "Synergistic effects of doping, composite formation, and nanotechnology to enhance the photocatalytic activities of semiconductive materials", OPTICAL MATERIALS, vol. 135, pages 113264 * |
GUAN, X等: "Charge separation and strong adsorption-enhanced MoO3 visible light photocatalytic performance", JOURNAL OF MATERIALS SCIENCE, vol. 55, no. 14, pages 5808 - 5822, XP037039481, DOI: 10.1007/s10853-020-04418-8 * |
GUO, KX等: "Artificial synapse based on MoO3 nanosheets prepared by hydrothermal synthesis", ACTA PHYSICA SINICA, vol. 69, no. 23 * |
吕佳顺: "钼基氧化物纳米复合材料的制备及性能研究", 中国优秀硕士学位论文全文数据库 (工程科技Ⅰ辑), no. 9, pages 016 - 507 * |
李瑞东等: "Rubrene∶MoO_3混合薄膜的制备及光学和电学性质", 物理学报, vol. 68, no. 17, pages 253 - 260 * |
高海燕等: "Sn掺杂MoO_3的制备、表征及气敏性能", 高等学校化学学报, vol. 38, no. 12, pages 2206 - 2212 * |
Also Published As
Publication number | Publication date |
---|---|
CN115041182B (zh) | 2023-06-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2020102258A4 (en) | MIXED CRYSTAL TiO2/BiOBr COMPOSITE AND PREPARATION METHOD AND APPLICATION THEREOF | |
CN107185547B (zh) | 一种C/Fe-FeVO4复合光催化剂及其制备方法和应用 | |
CN111450856B (zh) | 以钒酸铋纳米片为前驱体制备超薄氯氧铋光催化剂的方法、超薄氯氧铋光催化剂及其应用 | |
CN111036243A (zh) | 含氧空缺的过渡金属掺杂的BiOBr纳米片光催化剂及其制备方法和应用 | |
Qu et al. | A new visible-light-induced Z-scheme photocatalytic system: Er3+: Y3Al5O12/(MoS2/NiGa2O4)-(BiVO4/PdS) for refractory pollutant degradation with simultaneous hydrogen evolution | |
CN112642427B (zh) | 一种金属m掺杂二氧化钛光催化剂及其在光催化固氮中的应用 | |
CN113426403A (zh) | 一种PbTiO3微米片-CdS纳米颗粒复合材料、制备方法及应用 | |
CN111151238B (zh) | 一种钒酸铋异质结BiVO4/Bi25VO40材料及其制备方法和应用 | |
CN116351438A (zh) | 一种二氧化铈硫化铟光催化材料及其制备方法与应用 | |
CN115041182B (zh) | 一种磁性三元复合光催化剂In-MoO3/SrFe12O19的制备方法 | |
CN108686672B (zh) | 一种MnO2/Bi2O3/MnxZn1-xFe2O4复合磁性光催化剂的制备方法 | |
CN110586057A (zh) | 杂化改性TiO2复合光催化剂、其制备及用途 | |
CN114177911B (zh) | 碳载多金属氧化物催化剂及其制备方法和应用 | |
CN113304742B (zh) | 一种活性炭负载Ti3+自掺杂TiO2光催化材料制备方法 | |
CN112844375B (zh) | 脱除氮氧化物的MnO2/Bi2WO6异质结光催化剂及其制备方法 | |
CN109987640B (zh) | 一种制备纳米α-Fe2O3的方法 | |
CN115069282A (zh) | 一种铋酸铜/碳酸氧铋异质结光催化剂及制备方法和应用 | |
CN114950463B (zh) | 一种新型磁性复合光催化剂MoO3/SrFe12O19的制备方法 | |
CN108275748A (zh) | 一种铌酸锶钠材料及其制备方法与应用 | |
CN111701605A (zh) | 一种制备磁性碘七氧化五铋复合光催化材料的方法 | |
CN114100657A (zh) | 一种α-Fe2O3/LaFeO3/g-C3N4/MXene材料及其制备方法和应用 | |
CN110624532B (zh) | 一种TiO2-BiVO4-石墨烯三元复合光催化材料及其制备方法 | |
CN108423713B (zh) | 一种钛酸锰纳米片材料的制备方法及应用 | |
CN113145099A (zh) | 铋负载的钛酸铋/钛酸钙复合光催化剂及制备方法和应用 | |
CN113735163A (zh) | 一种含氧空位的多孔二氧化钛材料及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |