CN114917901A - 可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 - Google Patents
可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 Download PDFInfo
- Publication number
- CN114917901A CN114917901A CN202210473410.2A CN202210473410A CN114917901A CN 114917901 A CN114917901 A CN 114917901A CN 202210473410 A CN202210473410 A CN 202210473410A CN 114917901 A CN114917901 A CN 114917901A
- Authority
- CN
- China
- Prior art keywords
- quantum dots
- ruthenium
- visible light
- composite photocatalyst
- bismuth vanadate
- 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.)
- Pending
Links
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 41
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 41
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 41
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 33
- 150000003303 ruthenium Chemical class 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000015556 catabolic process Effects 0.000 title claims abstract description 12
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004098 Tetracycline Substances 0.000 claims abstract description 17
- 229960002180 tetracycline Drugs 0.000 claims abstract description 17
- 229930101283 tetracycline Natural products 0.000 claims abstract description 17
- 235000019364 tetracycline Nutrition 0.000 claims abstract description 17
- 150000003522 tetracyclines Chemical class 0.000 claims abstract description 17
- 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 claims abstract description 16
- 229960000907 methylthioninium chloride Drugs 0.000 claims abstract description 16
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 14
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 11
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 11
- 230000000593 degrading effect Effects 0.000 claims abstract description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 9
- 239000002096 quantum dot Substances 0.000 claims abstract description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 26
- 239000000843 powder Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 10
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 238000013032 photocatalytic reaction Methods 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 5
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 5
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 5
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002070 nanowire Substances 0.000 abstract description 10
- 230000001699 photocatalysis Effects 0.000 abstract description 5
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000005342 ion exchange Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 206010064571 Gene mutation Diseases 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000002316 fumigant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000003394 haemopoietic effect Effects 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 230000003907 kidney function Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 modified bismuth vanadate Chemical class 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000002834 transmittance Methods 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
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/648—Vanadium, niobium or tantalum or polonium
- B01J23/6482—Vanadium
-
- 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
- C02F2101/34—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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
-
- 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
本发明属于光催化技术领域,具体涉及一种可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法。本发明通过第一次水热反应,在制备得到钒酸铋纳米线载体的过程中,原位的将碳量子点嵌入到钒酸铋纳米线载体中;通过第二次水热反应,直接将部分铋(0.01‑3%)和钌进行离子交换,在(1‑5%)H2/Ar的混合气体中煅烧,从而还原得到同样嵌在钒酸铋纳米线中的钌量子点单质。所得催化剂为以钒酸铋纳米线为载体,其中嵌入碳量子点和钌量子点。本发明所提供的复合光催化剂可在可见光条件下对甲醛、亚甲基蓝或四环素进行催化降解。
Description
技术领域
本发明属于光催化技术领域,具体涉及一种可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法。
背景技术
甲醛在工业上主要用于制造树脂(酚醛树脂、脲醛树脂等)、塑料、皮革、纸、人造纤维、胶合板、防腐和熏蒸剂等,这些行业常产生含甲醛的废水,因此甲醛废水的来源十分广泛。甲醛易发生聚合反应生成缩聚醛、多聚甲醛等大分子物质,这类大分子化学结构稳定,不易被氧化降解。甲醛具有高生物毒性,甲醛能与微生物体内的蛋白质、DNA、RNA直接反应,从而抑制其生物活性,甚至导致微生物死亡,一般情况下,当水溶液中甲醛浓度超过175mg/L时,对好氧降解微生物有抑制作用,当浓度超过100mg/L时,对厌氧降解微生物有抑制作用。亚甲基蓝广泛存在于印染工业废水和印染生产废水中,进入水体后,会阻碍水体透光性,减缓水生植物的光合作用和生长,降低水中气体的溶解,破坏水生生态系统。并且染料含有复杂的芳香基团难以生物降解脱色,而且许多染料或其降解产物具有生物毒性,能够致癌、致畸甚至诱发基因突变,这些有毒物质可经食物链传递至人体,并对人体造成伤害。四环素是药物及个人护理品中常见的化合物,具有较强的生物活性、旋光性和极性,是一种典型的杀菌性药物,被广泛应用于治疗人体疾病和预防禽畜的细菌性病害。四环素主要来源之一是医药废水,经不完全处理排放到地表水,从而污染天然水体。四环素长期大量存在会打破水体平衡,造成水环境生态系统的极大破坏。进入人体后能够危害人体造血功能、肾功能、干扰激素平衡甚至可致突变和癌变。
钒酸铋(BiVO4)是一种具有可见光响应的光催化材料,因其具有合适的带隙、相对较高的光稳定性、独特的晶体结构和绿色无毒等特性,被广泛地应用光催化领域,如光催化水裂解、选择性光有机合成以及空气或水中有机污染物的净化等方面。
虽然现有技术提供了一些对钒酸铋进行负载以改性的技术方案,但是,改性后的钒酸铋在性能上提高有限,在实际应用中因为光生空穴复合、吸收光谱范围窄等因素导致降解活性仍然不理想。并且多采用石墨烯、碳纳米管等碳材料,成本昂贵。且因为性能不足的原因,应用范围有明显的局限。
发明内容
为解决现有技术的不足,本发明提供了一种可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法。本发明所提供的复合光催化剂可在可见光条件下对甲醛、亚甲基蓝或四环素进行催化降解。
本发明所提供的技术方案如下:
一种可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的制备方法,包括以下步骤:
S1.将硝酸铋、醋酸、碳量子点、水按1:(2-5):(0.01-0.1):(50-100)的质量比混合得到混合溶液A;将V2O5、草酸、六次亚甲基四胺、30%氨水(以氨的质量数计)、水按1:(2-4):(0.1-0.6):(3-5):(50-100)的质量比混合得到混合溶液B;
S2.按照硝酸铋与V2O5的摩尔比为(0.5-1):1,将溶液A和B混合后水热反应1-12h,温度为80-220℃,冷却至室温后,收集得到粉末;
S3.将S2步骤中收集得到的粉末加入到浓度为0.01~0.1mol/L的氯化钌溶液中,粉末与溶液的质量比为1:(10-100)进行二次水热反应,水热反应时间为1-12h,温度为80-220℃,冷却到室温后收集得到粉末;
S4.将S3步骤中得到的粉末在(1-5%)H2/Ar的混合气体中煅烧1-12h,煅烧温度为300-500℃,得到可见光钒酸铋、碳量子点和钌量子点复合光催化剂材料。
上述技术方案中:
通过第一次水热反应,在制备得到钒酸铋纳米线载体的过程中,可以原位的将碳量子点嵌入到钒酸铋纳米线载体中;
通过第二次水热反应,可以直接将部分(0.01-3%)铋和钌进行离子交换,从而可直接通过步骤S4还原生成同样嵌在钒酸铋纳米线中的钌量子点;
对应的,步骤S4得到的材料,其结构为:以钒酸铋纳米线为载体,其中嵌入碳量子点和钌量子点。
具体的,碳量子点的尺寸小于10nm;钌量子点的尺寸小于10nm。
具体的,步骤S4得到的所述可见光钒酸铋、碳量子点和钌量子点复合光催化剂材料中,碳量子点的质量分数为0.01-3%;钌量子点的质量分数为0.01-3%。
本发明还提供了根据上述制备方法制备得到的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂。
本发明还提供了根据上述可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的应用,用于降解甲醛、亚甲基蓝、四环素。
进一步的,用于降解水中的甲醛、水中的亚甲基蓝或水中的四环素。
本发明还提供了一种废水的降解方法,包括以下步骤:将本发明所提供的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂与废水混合,在黑暗条件下搅拌后,在光照条件下进行光催化反应,完成对废水中有机物的降解,其中:
废水中包含甲醛、亚甲基蓝或四环素中的任意一种或多种,甲醛、亚甲基蓝或四环素的浓度分别为10~30mg/L;
所述可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的浓度为0.1-0.5g/L。
本发明所提供的复合光催化剂可在可见光条件下对甲醛、亚甲基蓝或四环素进行催化降解。
具体的,所述黑暗条件下搅拌时间为20-40min。
具体的,所述搅拌的转速为200~400rpm。
具体的,所述光照灯源为:420nm≤λ≤800nm(可见光条件)。
具体的,所述光催化反应的时间为60~180min。
附图说明
图1是实施例1得到的可见光钒酸铋、碳量子点和钌量子点复合光催化剂材料的电镜图,其中(a)部分为SEM图,(b)部分为TEM图。
图2是光催化降解废水中甲醛(a)、亚甲基蓝(b)或四环素(c)的性能图。
具体实施方式
以下对本发明的原理和特征进行描述,所举实施例只用于解释本发明,并非用于限定本发明的范围。
实施例1
S1.将硝酸铋、醋酸、碳量子点、水按1:5:0.01:100的质量比混合得到混合溶液A;将V2O5、草酸、六次亚甲基四胺、30%氨水、水按1:2:0.6:3:100的质量比混合得到混合溶液B;
S2.按照硝酸铋与V2O5的摩尔比为0.5:1,将溶液A和B混合后水热反应12h,温度为80℃,冷却至室温后,收集得到粉末;
S3.将S2步骤中收集得到的粉末加入到浓度为0.1mol/L的氯化钌溶液中,粉末与溶液的质量比为1:10进行二次水热反应,水热反应时间为1h,温度为220℃,冷却到室温后收集得到粉末;
S4.将S3步骤中得到的粉末在1%H2/Ar的混合气体中煅烧12h,煅烧温度为300℃,得到可见光钒酸铋、碳量子点和钌复合光催化剂材料。
实施例2
S1.将硝酸铋、醋酸、碳量子点、水按1:2:0.1:50的质量比混合得到混合溶液A;将V2O5、草酸、六次亚甲基四胺、30%氨水、水按1:4:0.1:5:50的质量比混合得到混合溶液B;
S2.按照硝酸铋与V2O5的摩尔比为1:1,将溶液A和B混合后水热反应1h,温度为220℃,冷却至室温后,收集得到粉末;
S3.将S2步骤中收集得到的粉末加入到浓度为0.01mol/L的氯化钌溶液中,粉末与溶液的质量比为1:100进行二次水热反应,水热反应时间为12h,温度为80℃,冷却到室温后收集得到粉末;
S4.将S3步骤中得到的粉末在5%H2/Ar的混合气体中煅烧1h,煅烧温度为500℃,得到可见光钒酸铋、碳量子点和钌复合光催化剂材料。
实施例3
S1.将硝酸铋、醋酸、碳量子点、水按1:3:0.05:80的质量比混合得到混合溶液A;将V2O5、草酸、六次亚甲基四胺、30%氨水、水按1:3:0.4:4:70的质量比混合得到混合溶液B;
S2.按照硝酸铋与V2O5的摩尔比为0.8:1,将溶液A和B混合后水热反应6h,温度为150℃,冷却至室温后,收集得到粉末;
S3.将S2步骤中收集得到的粉末加入到浓度为0.05mol/L的氯化钌溶液中,粉末与溶液的质量比为1:50进行二次水热反应,水热反应时间为6h,温度为160℃,冷却到室温后收集得到粉末;
S4.将S3步骤中得到的粉末在3%H2/Ar的混合气体中煅烧6h,煅烧温度为400℃,得到可见光钒酸铋、碳量子点和钌复合光催化剂材料。
应用例
对实施例1得到的可见光钒酸铋、碳量子点和钌复合光催化剂材料进行电镜扫描,可以看出,其呈明显的纳米线结构。
分别配置浓度为10mg/L的甲醛水溶液、亚甲基蓝水溶液和四环素水溶液100mL,将实施例1制备得到可见光钒酸铋、碳量子点和钌的复合光催化剂分别与三种溶液混合,在黑暗条件下搅拌后,在光照条件下进行光催化反应,进行对废水中有机物的降解。具体的:催化剂的浓度为0.5g/L;黑暗条件下搅拌时间为30min;搅拌的转速为300rpm。光照灯源为:300W;光催化反应的时间为120min。
数据统计结果如图2所示。可以看出,甲醛水溶液的浓度经过150min的降解,降低到1.2mg/L。亚甲基蓝水溶液的浓度经过150min的降解,降低到0.25mg/L。四环素水溶液的浓度经过150min的降解,降低到1.1mg/L。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的制备方法,其特征在于,包括以下步骤:
S1.将硝酸铋、醋酸、碳量子点、水按1:(2-5):(0.01-0.1):(50-100)的质量比混合得到混合溶液A;将V2O5、草酸、六次亚甲基四胺、30%氨水、水按1:(2-4):(0.1-0.6):(3-5):(50-100)的质量比混合得到混合溶液B;
S2.按照硝酸铋与V2O5的摩尔比为(0.5-1):1,将溶液A和B混合后水热反应1-12h,温度为80-220℃,冷却至室温后,收集得到粉末;
S3.将S2步骤中收集得到的粉末加入到浓度为0.01~0.1mol/L的氯化钌溶液中,粉末与溶液的质量比为1:(10-100)进行二次水热反应,水热反应时间为1-12h,温度为80-220℃,冷却到室温后收集得到粉末;
S4.将S3步骤中得到的粉末在(1-5%)H2/Ar的混合气体中煅烧1-12h,煅烧温度为300-500℃,得到可见光钒酸铋、碳量子点和钌量子点复合光催化剂材料。
2.根据权利要求1所述的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的制备方法,其特征在于:碳量子点的尺寸小于10nm;钌量子点的尺寸小于10nm。
3.根据权利要求1或2所述的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的制备方法,其特征在于:步骤S4得到的所述可见光钒酸铋、碳量子点和钌量子点复合光催化剂材料中,碳量子点的质量分数为0.01-3%;钌量子点的质量分数为0.01-3%。
4.一种根据权利要求1至3任一所述的制备方法制备得到的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂。
5.一种根据权利要求4所述的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的应用,其特征在于:用于降解甲醛、亚甲基蓝、四环素。
6.一种根据权利要求5所述的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的应用,其特征在于:用于降解水中的甲醛、水中的亚甲基蓝或水中的四环素。
7.一种废水的降解方法,其特征在于,包括以下步骤:将权利要求4所述的可见光钒酸铋、碳量子点和钌量子点的复合光催化剂与废水混合,在黑暗条件下搅拌后,在光照条件下进行光催化反应,完成对废水中有机物的降解,其中:
废水中包含甲醛、亚甲基蓝或四环素中的任意一种或多种,甲醛、亚甲基蓝或四环素的浓度分别为10~30mg/L;
所述可见光钒酸铋、碳量子点和钌量子点的复合光催化剂的浓度为0.1-0.5g/L。
8.根据权利要求7所述的废水的降解方法,其特征在于:
所述黑暗条件下搅拌时间为20-40min;
所述搅拌的转速为200~400rpm;
所述光照灯源为:420nm≤λ≤800nm;
所述光催化反应的时间为60~180min。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210473410.2A CN114917901A (zh) | 2022-04-29 | 2022-04-29 | 可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210473410.2A CN114917901A (zh) | 2022-04-29 | 2022-04-29 | 可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114917901A true CN114917901A (zh) | 2022-08-19 |
Family
ID=82806219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210473410.2A Pending CN114917901A (zh) | 2022-04-29 | 2022-04-29 | 可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114917901A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115400387A (zh) * | 2022-09-30 | 2022-11-29 | 陕西科技大学 | 一种降解农用反光膜复合材料及其制备方法、使用方法 |
CN115739140A (zh) * | 2022-11-14 | 2023-03-07 | 南宁师范大学 | 钒酸铋/黑磷量子点复合光催化剂的制备方法 |
-
2022
- 2022-04-29 CN CN202210473410.2A patent/CN114917901A/zh active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115400387A (zh) * | 2022-09-30 | 2022-11-29 | 陕西科技大学 | 一种降解农用反光膜复合材料及其制备方法、使用方法 |
CN115739140A (zh) * | 2022-11-14 | 2023-03-07 | 南宁师范大学 | 钒酸铋/黑磷量子点复合光催化剂的制备方法 |
CN115739140B (zh) * | 2022-11-14 | 2024-04-16 | 南宁师范大学 | 钒酸铋/黑磷量子点复合光催化剂的制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN114917901A (zh) | 可见光钒酸铋、碳量子点和钌量子点的复合光催化剂及其制备方法、应用和降解方法 | |
CN111036285A (zh) | 一种氮改性钙钛矿复合分子筛的光催化剂及其制备方法与应用方法 | |
Gao et al. | A review on mechanism, applications and influencing factors of carbon quantum dots based photocatalysis | |
CN110624588B (zh) | D-g-C3N4可见光催化材料的制备方法及应用 | |
CN101844827A (zh) | 一种催化湿式氧化降解甲醛污染物的方法 | |
CN108686658B (zh) | 一种C-QDs-Fe2O3/TiO2复合光催化剂及其制备方法 | |
Mabuza et al. | Investigating the synergy of integrated anaerobic digestion and photodegradation using hybrid photocatalyst for molasses wastewater treatment | |
CN102357360A (zh) | 一种光催化降解罗丹明b的催化剂及其制备方法 | |
Jada et al. | Synergistic effect of MoO3/TiO2 towards discrete and simultaneous photocatalytic degradation of E. coli and methylene blue in water | |
CN108325516A (zh) | 一种BiVO4/InVO4异质结催化剂及其制备方法和应用 | |
CN104971734A (zh) | 一种可处理亚甲基蓝废水的催化剂组合物及其制备方法和应用 | |
CN114570406A (zh) | 一种用于有机污水修复的氮化碳复合光催化材料及其制备方法 | |
CN108927172B (zh) | 一种负载金纳米粒子的磁性生物质碳材料的制备及其应用 | |
CN110280297A (zh) | 一种用于抗生素光降解的催化剂及其制备方法 | |
Wang et al. | Preparation of non-polluting Tb-doped mesoporous carbon nitride photocatalyst and study on the efficacy and mechanism of degradation of antibiotics in water | |
Rianjanu et al. | Photocatalytic degradation of aqueous Congo red dye pollutants by rare-earth metal oxide (CeO2) nanorods | |
CN103055844B (zh) | 一种处理亚甲基蓝染料废水的催化剂组合物的制备方法 | |
CN102489291A (zh) | 一种膨胀石墨负载纳米钒酸铋光催化剂的制备方法 | |
CN112916043B (zh) | 一种具有吸附-催化降解染料功能的聚苯胺/硫化铜复合光催化剂及其制备方法和应用 | |
CN114260014A (zh) | 一种NiCo2O4/CeO2复合催化剂及其制备方法与应用 | |
CN104437468A (zh) | 一种用于处理含亚甲基蓝染料废水的催化剂组合物及其制备方法和应用 | |
CN111905708B (zh) | 一种实心氧化锌微球的制备方法及其应用 | |
Liaqat et al. | Synthesis and characterization of ZnO/BiVO4 nanocomposites as heterogeneous photocatalysts for antimicrobial activities and waste water treatment | |
CN111054422B (zh) | 一种复合光催化剂及其制备方法和应用 | |
Parashar et al. | Multi-antibiotics removal under UV-A light using sol-gel prepared TiO2: Central composite design, effect of persulfate addition and degradation pathway study |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication |