CN105944744B - 一种对双酚a具有高矿化率的可见光响应型复合光催化剂 - Google Patents
一种对双酚a具有高矿化率的可见光响应型复合光催化剂 Download PDFInfo
- Publication number
- CN105944744B CN105944744B CN201610402385.3A CN201610402385A CN105944744B CN 105944744 B CN105944744 B CN 105944744B CN 201610402385 A CN201610402385 A CN 201610402385A CN 105944744 B CN105944744 B CN 105944744B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- preparation
- bisphenol
- composite photo
- solution
- 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.)
- Expired - Fee Related
Links
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 41
- 229940106691 bisphenol a Drugs 0.000 title claims abstract description 29
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 26
- 230000004044 response Effects 0.000 title claims abstract description 17
- 239000000243 solution Substances 0.000 claims abstract description 33
- 238000002360 preparation method Methods 0.000 claims abstract description 23
- FJOLTQXXWSRAIX-UHFFFAOYSA-K silver phosphate Chemical compound [Ag+].[Ag+].[Ag+].[O-]P([O-])([O-])=O FJOLTQXXWSRAIX-UHFFFAOYSA-K 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 15
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 15
- 239000010941 cobalt Substances 0.000 claims abstract description 15
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 15
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007864 aqueous solution Substances 0.000 claims abstract description 12
- 238000001354 calcination Methods 0.000 claims abstract description 7
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- 239000012153 distilled water Substances 0.000 claims abstract description 7
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 6
- 229910000318 alkali metal phosphate Inorganic materials 0.000 claims abstract description 5
- 229910002254 LaCoO3 Inorganic materials 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 23
- 229910000161 silver phosphate Inorganic materials 0.000 claims description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- 238000003837 high-temperature calcination Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 235000005979 Citrus limon Nutrition 0.000 claims 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 244000248349 Citrus limon Species 0.000 claims 1
- 244000131522 Citrus pyriformis Species 0.000 claims 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 18
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 229910001961 silver nitrate Inorganic materials 0.000 abstract description 6
- 238000001291 vacuum drying Methods 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000012901 Milli-Q water Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 9
- 238000005286 illumination Methods 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 6
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 229910052724 xenon Inorganic materials 0.000 description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000002144 chemical decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229940011871 estrogen Drugs 0.000 description 1
- 239000000262 estrogen Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- NDYNABNWLRVCDO-UHFFFAOYSA-N phosphoric acid silver Chemical compound [Ag].P(O)(O)(O)=O NDYNABNWLRVCDO-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/185—Phosphorus; Compounds thereof with iron group metals or platinum group metals
- B01J27/1853—Phosphorus; Compounds thereof with iron group metals or platinum group metals with iron, cobalt or nickel
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B01J35/39—
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
提供了一种对双酚A具有高矿化率的可见光响应型复合光催化剂,所述复合光催化剂由质量比为1~20:1的磷酸银与钴酸镧复合而成。其制备方法如下:将硝酸镧和硝酸钴溶解于蒸馏水中,再加入柠檬酸溶液以及醇溶液,真空干燥后煅烧得到钴酸镧固体,再进行研磨,过筛;将钴酸镧分散在水溶液中,加入硝酸银溶液和碱金属磷酸盐溶液,经过超纯水洗涤后烘干得到磷酸银/钴酸镧复合光催化剂。本发明提供的制备方法简单易行,重复性好,可操作性强。将该复合光催化剂应用于处理双酚A难降解有机废水,40min对10mg/L的双酚A去除率可达到100%,矿化率达77.27%。
Description
技术领域
本发明涉及一种对双酚A具有高矿化率的可见光响应型复合光催化剂,具体涉及一种对双酚A具有高矿化率的可见光响应型磷酸银/钴酸镧复合光催化剂,属于纳米复合材料及环境治理光催化技术领域。
背景技术
环境内分泌干扰物(EDCs)在环境中具有高毒性、低浓度、强疏水性的特性,会对人及动物的免疫、神经和内分泌系统功能造成严重干扰的一类化学物质,最严重的是会对人及动物的生殖遗传功能产生干扰。双酚A是最重要的人工合成环境内分泌干扰物之一,且每年以380万吨的产量增长,环境中的双酚A的来源主要包括家庭生活污水、食品的包装材料、工业生产废水的排放及垃圾渗滤液的排放等。双酚A具有雌激素的活性,对原代和子代生殖系统及其发育、脑、神经、免疫系统等都有严重影响。目前在人类的饮用水、食品、人体血液、环境中都能检测出双酚A的存在,即使含量很低也可能对人类的健康造成潜在威胁。目前,对双酚A的降解和矿化己成为环境治理的热点以及难点,因此,对双酚A去除技术的研究具有十分重要的意义。
目前,对双酚A的去除方法主要有物理吸附、化学降解和微生物降解等。其中,光催化氧化法是目前采用的主要化学降解方法之一,如赵坤(Bi2WO6-TiO2-Pt异质结光催化剂的制备及光催化性能研究[D].东北师范大学,2014.)研究了在光照12h后,Bi2W06—元光催化剂和Bi2W06-Ti02-Pt-三元复合光催化剂对BPA的TOC去除效率分别为48.9%和59.2%;程治良等(循环式超声强化光催化降解双酚A[J].化工环保,2013,33(2):93-97.)研究了在初始BPA质量浓度为20.0mg/L、超声功率为600W、TiO2:加入量为7g/L、循环液流速为4.05×102m/s、空气流量为200mL/min的条件下,反应240min后TOC去除率可达84.5%。可见,光催化氧化双酚A在短时间(几十分钟)的矿化率较低。
因此,本发明提供一种对双酚A具有高矿化率的可见光响应型复合光催化剂的制备方法,将磷酸银与钴酸镧复合,用于在可见光下催化降解双酚A。相比于纯的磷酸银,该复合材料的光催化活性和矿化率显著提高,且该材料在国内外还未见报道。
发明内容
本发明的目的在于提供一种具有高矿化率的可见光响应型Ag3PO4/LaCoO3复合光催化剂,以解决半导体光催化剂催化氧化难降解有机污染物矿化率低以及Ag3PO4光催化剂成本较高,易发生光腐蚀的问题,在一定程度上提高了光催化剂对难降解有机污染物的光催化活性和矿化率。
实现本发明所采用的技术解决方案为:提供一种对双酚A具有高矿化率的可见光响应型复合光催化剂Ag3PO4/LaCoO3的制备方法,优选的是,Ag3PO4、LaCoO3的质量比为1~20:1,按以下步骤进行:
(1)LaCoO3的制备:将硝酸镧和硝酸钴分别溶解于蒸馏水中,搅拌15~60min,再加入柠檬酸溶液,加热并继续搅拌15~90min,加热温度优选为45~80℃;加入醇溶液,加热同时搅拌15~90min,加热温度优选为45~80℃;升温搅拌45~120min,升温至50~120℃,然后真空干燥6~20h;再将干燥后产物移至箱式电阻炉高温煅烧1~4h,再升温继续煅烧2~6h,最后研磨,过筛,即得LaCoO3。
(2)Ag3PO4/LaCoO3的制备:将LaCoO3分散在水溶液中进行超声处理15~60min,加入硝酸银溶液并搅拌6~20h,再逐滴加入碱金属磷酸盐溶液,搅拌30~120min,然后经过洗涤后置于干燥箱中干燥6~24h,研磨,过筛,即得Ag3PO4/LaCoO3。
优选的是,步骤(1)中醇溶液为C2~C6醇类有机溶剂,优选乙二醇。
优选的是,步骤(1)中所述的干燥温度为40~120℃。
优选的是,步骤(1)中高温煅烧温度为300~900℃。
优选的是,步骤(1)、(2)中所述的过筛为60~120目筛。
优选的是,步骤(2)中碱金属磷酸盐溶液为磷酸氢二钠或磷酸氢二钾。
优选的是,步骤(2)中所述的干燥温度为40~80℃。
此外,本发明还提供一种对双酚A具有高矿化率的可见光响应型Ag3PO4/LaCoO3复合光催化剂的应用,具体为:将具有高矿化率的可见光响应型Ag3PO4/LaCoO3复合光催化剂应用于处理双酚A难降解有机废水。
另外,本发明还提供一种具有高矿化率的可见光响应型Ag3PO4/LaCoO3复合光催化剂的应用方法,即:向双酚A水溶液中加入Ag3PO4/LaCoO3,先进行暗吸附实验,待达到平衡后再进行可见光光照催化降解污染物实验。
本发明的有益技术效果在于:
制备的可见光响应型磷酸银/钴酸镧复合光催化剂较纯的磷酸银显著的提高了半导体光催化剂在短时间内催化氧化双酚A的矿化率。
通过所述方法制备的可见光响应型磷酸银/钴酸镧复合光催化剂与纯磷酸银相比较,复合光催化剂在一定程度上增强了光催化活性和抗光腐蚀性的能力。
通过将价格较低的钴酸镧与磷酸银复合,使得光催化材料的制备成本降低,且本发明中可见光响应型磷酸银/钴酸镧复合光催化剂的制备方法简单易行,重复性好,可操作性强,环保且无二次污染,具有产业化的应用前景。
附图说明
图1为本发明实施例1的复合光催化剂的SEM图。
图2为本发明实施例1的复合光催化剂的XRD图。
图3为本发明实施例1的复合光催化剂在可见光下对BPA的光催化降解性能图。
图4为本发明实施例1的复合光催化剂在可见光下对BPA的矿化率图。
具体实施方式
下面结合具体的实施例对本发明作进一步的说明,但这些实施例并不限制本发明的保护范围。
实施例1
(1)复合光催化剂的制备:将5mmol硝酸镧和5mmol硝酸钴溶解于蒸馏水中,搅拌30min,再加入25mmol柠檬酸溶液,在50℃下继续搅拌45min,加入25mmol乙二醇溶液,加热至50℃并搅拌45min,再升温至80℃并同时搅拌60min,然后80℃真空干燥12h,再将其移至箱式电阻炉400℃高温煅烧2h,升温至700℃煅烧4h,研磨,过80目筛,即得LaCoO3。
再将0.1g LaCoO3分散在水溶液中进行超声处理30min,加入6.6mmol硝酸银的水溶液并搅拌12h,再逐滴加入2.2mmol磷酸氢二钠的水溶液,搅拌60min,然后经过洗涤后置于干燥箱中干燥12h,研磨,过80目筛,即得Ag3PO4与LaCoO3质量比为9:1的Ag3PO4/LaCoO3。其SEM、XRD表征结果分别见于图1和图2。由图1可观察得到复合光催化剂的结构和形貌,图1中a为LaCoO3,b为Ag3PO4,c和d为Ag3PO4/LaCoO3。由图1可观察得到,磷酸银负载在钴酸镧表面,形成了Ag3PO4/LaCoO3复合光催化剂。图2分析并证明了复合催化剂的成分含有磷酸银和钴酸镧,图2中a为LaCoO3,b为Ag3PO4,c为Ag3PO4/LaCoO3。
(2)复合光催化剂应用于去除水中BPA的性能测试:在1L 10mg/L的BPA溶液中,投加上述复合催化剂0.5g,首先进行30min暗吸附反应,达到吸附平衡后,再在300W氙灯的光照下进行光催化氧化反应40min,实验结束后测定上清液BPA的残余浓度和TOC值,可得复合光催化剂在可见光照射下对有机污染物双酚A的光催化降解曲线图和矿化率图,分别如图3、图4。由测定结果分析得知,在可见光下,复合光催化剂在40min光照后对双酚A的去除率和矿化率分别达到100%和77.27%,远高于纯的磷酸银对BPA的去除率(72.08%)及矿化率(58.34%)。
实施例2
(1)复合光催化剂的制备:将5mmol硝酸镧和5mmol硝酸钴溶解于蒸馏水中,搅拌30min,再加入25mmol柠檬酸溶液,在50℃下继续搅拌45min,加入25mmol乙二醇溶液,加热至50℃并搅拌45min,再升温至80℃并同时搅拌60min,然后80℃真空干燥12h,再将其移至箱式电阻炉400℃高温煅烧2h,升温至700℃煅烧4h,研磨,过80目筛,即得LaCoO3。
再将0.2g LaCoO3分散在水溶液中进行超声处理30min,加入5.7mmol硝酸银的水溶液并搅拌12h,再逐滴加入1.9mmol磷酸氢二钠的水溶液,搅拌60min,然后经过洗涤后置于干燥箱中干燥12h,研磨,过80目筛,即得Ag3PO4与LaCoO3质量比为8:2的Ag3PO4/LaCoO3。
(2)复合光催化剂应用于去除水中BPA的性能测试:在1L 10mg/L的BPA溶液中,投加上述复合催化剂0.5g,首先进行30min暗吸附反应,达到吸附平衡后,再在300W氙灯的光照下进行光催化氧化反应40min,实验结束后测定上清液BPA的残余浓度,可得复合光催化剂在可见光照射下对有机污染物双酚A的光催化降解曲线图。由测定结果分析得知,在可见光下,复合光催化剂在40min光照后对双酚A的去除率和矿化率分别达到78.55%、62.65%。
实施例3
(1)复合光催化剂的制备:将5mmol硝酸镧和5mmol硝酸钴溶解于蒸馏水中,搅拌30min,再加入25mmol柠檬酸溶液,在50℃下继续搅拌45min,加入25mmol乙二醇溶液,加热至50℃并搅拌45min,再升温至80℃并同时搅拌60min,然后80℃真空干燥12h,再将其移至箱式电阻炉400℃高温煅烧2h,升温至700℃煅烧4h,研磨,过80目筛,即得LaCoO3。
再将0.05g LaCoO3分散在水溶液中进行超声处理30min,加入6.8mmol硝酸银的水溶液并搅拌12h,再逐滴加入2.3mmol磷酸氢二钠的水溶液,搅拌60min,然后经过洗涤后置于干燥箱中干燥12h,研磨,过80目筛,即得Ag3PO4与LaCoO3质量比为19:1的Ag3PO4/LaCoO3。
(2)复合光催化剂应用于去除水中BPA的性能测试:在1L 10mg/L的BPA溶液中,投加上述复合催化剂0.5g,首先进行30min暗吸附反应,达到吸附平衡后,再在300W氙灯的光照下进行光催化氧化反应40min,实验结束后测定上清液BPA的残余浓度,可得复合光催化剂在可见光照射下对有机污染物双酚A的光催化降解曲线图。由测定结果分析得知,在可见光下,复合光催化剂在40min光照后对双酚A的去除率和矿化率分别达到89.30%、68.40%。
实施例4
(1)复合光催化剂的制备:将5mmol硝酸镧和5mmol硝酸钴溶解于蒸馏水中,搅拌30min,再加入25mmol柠檬酸溶液,在50℃下继续搅拌45min,加入25mmol乙二醇溶液,加热至50℃并搅拌45min,再升温至80℃并同时搅拌60min,然后80℃真空干燥12h,再将其移至箱式电阻炉400℃高温煅烧2h,升温至700℃煅烧4h,研磨,过80目筛,即得LaCoO3。
再将0.1gLaCoO3分散在水溶液中进行超声处理30min,加入6.6mmol硝酸银的水溶液并搅拌12h,再逐滴加入2.2mmol磷酸氢二钠的水溶液,搅拌60min,然后经过洗涤后置于干燥箱中干燥12h,研磨,过80目筛,即得Ag3PO4与LaCoO3质量比为9:1的Ag3PO4/LaCoO3。
(2)复合光催化剂重复应用于去除水中BPA的性能测试:在1L 10mg/L的BPA溶液中,投加上述复合催化剂0.5g,首先进行30min暗吸附反应,达到吸附平衡后,再在300W氙灯的光照下进行光催化氧化反应40min,实验结束后测定上清液BPA的残余浓度和TOC值并分离回收Ag3PO4/LaCoO3,回收后的复合光催化剂经蒸馏水洗涤若干次,再置于60℃的烘箱干燥,最后研磨,过筛,再次循环用于BPA废水的催化处理,处理过程同上。可见光响应型高矿化率磷酸银/钴酸镧复合光催化剂重复利用第3次后,BPA的降解率和矿化率仍可分别达到85.18%,62.28%。
Claims (9)
1.一种对双酚A具有高矿化率的可见光响应型复合光催化剂,其特征在于:所述复合可见光光催化剂由磷酸银和钴酸镧组成,磷酸银、钴酸镧的质量比为1~20:1。
2.根据权利要求1所述的一种对双酚A具有高矿化率的可见光响应型复合光催化剂的制备方法,其特征在于,包括如下步骤:
(1)LaCoO3的制备:将硝酸镧和硝酸钴分别溶解于蒸馏水中,搅拌15~60min,再加入柠檬酸溶液,加热并继续搅拌15~90min,加热温度为45~80℃;加入醇溶液,加热同时搅拌15~90min,加热温度为45~80℃;升温搅拌45~120min,升温至50~120℃,然后真空干燥6~20h;再将干燥后产物移至箱式电阻炉高温煅烧1~4h,再升温继续煅烧2~6h,最后研磨,过筛,即得LaCoO3;
(2)Ag3PO4/LaCoO3的制备:将LaCoO3分散在水溶液中进行超声处理15~60min,加入硝酸银溶液并搅拌6~20h,再逐滴加入碱金属磷酸盐溶液,搅拌30~120min,然后经过洗涤后置于干燥箱中干燥6~24h,研磨,过筛,即得Ag3PO4/LaCoO3。
3.根据权利要求2所述的制备方法,其特征在于步骤(1)中醇溶液为C2~C6醇类有机溶剂。
4.根据权利要求3所述的制备方法,其特征在于步骤(1)中醇溶液为乙二醇。
5.根据权利要求2所述的制备方法,其特征在于步骤(1)中所述的干燥温度为40~120℃。
6.根据权利要求2所述的制备方法,其特征在于步骤(1)中高温煅烧温度为300~900℃。
7.根据权利要求2所述的制备方法,其特征在于步骤(1)、(2)中所述的过筛为60~120目筛。
8.根据权利要求2所述的制备方法,其特征在于步骤(2)中碱金属磷酸盐溶液为磷酸氢二钠或磷酸氢二钾。
9.根据权利要求2所述的制备方法,其特征在于步骤(2)中所述的干燥温度为40~80℃。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610402385.3A CN105944744B (zh) | 2016-06-08 | 2016-06-08 | 一种对双酚a具有高矿化率的可见光响应型复合光催化剂 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610402385.3A CN105944744B (zh) | 2016-06-08 | 2016-06-08 | 一种对双酚a具有高矿化率的可见光响应型复合光催化剂 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105944744A CN105944744A (zh) | 2016-09-21 |
CN105944744B true CN105944744B (zh) | 2018-10-12 |
Family
ID=56907931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610402385.3A Expired - Fee Related CN105944744B (zh) | 2016-06-08 | 2016-06-08 | 一种对双酚a具有高矿化率的可见光响应型复合光催化剂 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105944744B (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106582667B (zh) * | 2016-12-26 | 2019-04-23 | 东北大学秦皇岛分校 | 一种铒离子掺杂钴酸镧光催化剂粉体及其制备方法和应用 |
CN107376959A (zh) * | 2017-07-06 | 2017-11-24 | 湘潭大学 | 一种磁性生物炭负载磷酸银复合光催化剂的制备及其应用 |
CN107376964B (zh) * | 2017-07-21 | 2020-07-14 | 湘潭大学 | 一种以掺杂钙钛矿为载体的复合光催化剂制备及其应用 |
CN108144623A (zh) * | 2017-12-27 | 2018-06-12 | 长安大学 | 一种纳米钴酸镧材料及其制备方法 |
CN108889322B (zh) * | 2018-08-22 | 2021-01-29 | 湘潭大学 | 一种纳米片状磷酸银及其制备方法和作为可见光催化剂的应用 |
CN110270349B (zh) * | 2019-07-29 | 2022-03-25 | 黔南高新区绿色化工技术研究院有限公司 | 一种用于垃圾渗滤液处理的复合催化剂 |
CN112439431A (zh) * | 2020-11-30 | 2021-03-05 | 佛山科学技术学院 | 一种基于锶掺杂的复合光催化剂及其制备方法和应用 |
CN112547101A (zh) * | 2020-11-30 | 2021-03-26 | 佛山科学技术学院 | 一种可见光催化复合材料及其制备方法和应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101972663A (zh) * | 2010-09-17 | 2011-02-16 | 北京工业大学 | 一种制备LaCoO3/SBA-16和LaMnO3/SBA-16催化剂的新方法 |
CN103071496A (zh) * | 2013-02-05 | 2013-05-01 | 湖南科技大学 | 一种可见光催化剂及其制备方法与应用 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013192996A (ja) * | 2012-03-16 | 2013-09-30 | Fujitsu Ltd | 光触媒、及び光触媒の製造方法 |
-
2016
- 2016-06-08 CN CN201610402385.3A patent/CN105944744B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101972663A (zh) * | 2010-09-17 | 2011-02-16 | 北京工业大学 | 一种制备LaCoO3/SBA-16和LaMnO3/SBA-16催化剂的新方法 |
CN103071496A (zh) * | 2013-02-05 | 2013-05-01 | 湖南科技大学 | 一种可见光催化剂及其制备方法与应用 |
Non-Patent Citations (3)
Title |
---|
"Ag3PO4/BiVO4复合光催化剂的制备及可见光催化降解燃料";葛明等;《物理化学学报》;20141115;第30卷(第11期);第2107-2112页 * |
"Graphene-wrapped Ag3PO4/LaCO3OH heterostructures for water purification under visible light";Santosh S.Patil;《Journal of Energy Chemistry》;20160601;第25卷(第5期);第845-853 * |
"钙钛矿型LaCoO3的制备及其光催化性能";毕军等;《大连交通大学学报》;20140815;第35卷(第4期);第78-81页 * |
Also Published As
Publication number | Publication date |
---|---|
CN105944744A (zh) | 2016-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105944744B (zh) | 一种对双酚a具有高矿化率的可见光响应型复合光催化剂 | |
Xia et al. | Novel Fe-Mn-O nanosheets/wood carbon hybrid with tunable surface properties as a superior catalyst for Fenton-like oxidation | |
Zhu et al. | Bismuth impregnated biochar for efficient estrone degradation: The synergistic effect between biochar and Bi/Bi2O3 for a high photocatalytic performance | |
CN107298477B (zh) | 一种催化过硫酸盐降解废水中有机污染物的方法 | |
Zou et al. | SnO2 quantum dots anchored on g-C3N4 for enhanced visible-light photocatalytic removal of NO and toxic NO2 inhibition | |
WO2015120764A1 (zh) | 一种共掺杂TiO2催化剂及其制备方法 | |
Feng et al. | Porphyrin-based Ti-MOFs conferred with single-atom Pt for enhanced photocatalytic hydrogen evolution and NO removal | |
CN106944092B (zh) | 一种具有高效光热协同催化净化VOCs的Fe-MnO2催化剂的制备方法 | |
CN108722497A (zh) | 一种TiO2-MOFs光催化剂及其制备方法与应用 | |
Zhao et al. | Ce-based heterogeneous catalysts by partial thermal decomposition of Ce-MOFs in activation of peroxymonosulfate for the removal of organic pollutants under visible light | |
CN102274739B (zh) | 铜-氮双掺杂二氧化钛光催化材料 | |
CN105148964B (zh) | 一种三维还原氧化石墨烯‑Mn3O4/MnCO3纳米复合材料及其制备方法 | |
CN104437075A (zh) | 利用微波加热催化热解处理挥发性有机气体的方法 | |
CN105195180B (zh) | 一种硒酸铋光催化剂及其制备方法与应用 | |
CN107376964A (zh) | 一种以掺杂钙钛矿为载体的复合光催化剂制备及其应用 | |
CN108786895B (zh) | BiOCOOH/g-C3N4复合光催化剂及其制备方法和应用 | |
CN108579786A (zh) | Fe3O4@g-C3N4/RGO复合光催化剂及制备方法 | |
CN109226240B (zh) | 一种催化型污染土壤修复装置 | |
CN109261172A (zh) | 一种碘氧化铋/溴氧化铋异质结光催化剂的制备方法和用途 | |
CN113244962A (zh) | 一种产生单线态氧的锆卟啉基mof-石墨烯复合光催化剂的制备方法及应用 | |
Qi et al. | In situ fabrication of ZnO@ N-doped nanoporous carbon core-shell heterostructures with high photocatalytic and adsorption capacity by a calcination of ZnO@ MOF strategy | |
CN103831093A (zh) | 一种氧化锌基复合光催化纳米材料及其制备方法 | |
Leeladevi et al. | Investigation on photocatalytic degradation of hazardous chloramphenicol drug and amaranth dye by SmVO4 decorated g-C3N4 nanocomposites | |
Tang et al. | A novel S-scheme heterojunction in spent battery-derived ZnFe2O4/g-C3N4 photocatalyst for enhancing peroxymonosulfate activation and visible light degradation of organic pollutant | |
CN110394178A (zh) | 纳米三氧化二铁/纳米二氧化钛复合光催化剂及制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 |
|
CF01 | Termination of patent right due to non-payment of annual fee |