CN106179331A - 一种Pt片三叉戟纳米催化剂的制备方法 - Google Patents
一种Pt片三叉戟纳米催化剂的制备方法 Download PDFInfo
- Publication number
- CN106179331A CN106179331A CN201610571467.0A CN201610571467A CN106179331A CN 106179331 A CN106179331 A CN 106179331A CN 201610571467 A CN201610571467 A CN 201610571467A CN 106179331 A CN106179331 A CN 106179331A
- Authority
- CN
- China
- Prior art keywords
- nanocatalyst
- sheet
- trident
- preparation
- catalyst
- 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
- 239000011943 nanocatalyst Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 87
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 claims abstract description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 48
- 239000003054 catalyst Substances 0.000 abstract description 29
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001301 oxygen Substances 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000003421 catalytic decomposition reaction Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 102100023374 Forkhead box protein M1 Human genes 0.000 description 32
- 101000907578 Homo sapiens Forkhead box protein M1 Proteins 0.000 description 32
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002086 nanomaterial Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- DSVGQVZAZSZEEX-UHFFFAOYSA-N [C].[Pt] Chemical compound [C].[Pt] DSVGQVZAZSZEEX-UHFFFAOYSA-N 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical group Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- VEJOYRPGKZZTJW-FDGPNNRMSA-N (z)-4-hydroxypent-3-en-2-one;platinum Chemical compound [Pt].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O VEJOYRPGKZZTJW-FDGPNNRMSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002173 high-resolution transmission electron microscopy Methods 0.000 description 1
- 239000003863 metallic catalyst Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000004044 response Effects 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
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
- C25B11/081—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the element being a noble metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
- H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
- H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
- Catalysts (AREA)
Abstract
本发明属于纳米催化剂技术领域,涉及一种Pt片三叉戟纳米催化剂的制备方法。Pt片三叉戟纳米催化剂的制备方法是用乙酰丙酮铂作为前驱体,氟化铵作为调控剂,温度130‑180℃,H2条件下,在油胺溶液中合成。本发明方法制备催化剂工艺简单,操作方便,易于控制,反应温度低,催化剂制备成本较低;本发明制备的纳米催化剂具有较大的比表面积,这有利于大大促进甲醇的电催化氧化反应与双氧水的催化分解产氧;本发明制备的纳米催化剂,在对一定浓度的甲醇溶液的电催化氧化过程中显示出较商业Pt/C催化剂更强的抗中毒性能和更高的电催化稳定性;能够在常温常压下高效分解双氧水,整个过程绿色环保,具有明显的优势,同时能有效的降低能耗。
Description
技术领域
本发明属于纳米催化剂技术领域,涉及一种Pt片三叉戟纳米催化剂的制备方法。
背景技术
Pt基纳米材料能够有效的催化氢的氧化和氧的还原反应,因而被广泛的得到研究。其中最主要的研究热点是通过理论到工艺上的有效控制纳米材料的形貌,进而有效地提高纳米材料的活性和抗毒性。多支的Pt基纳米结构已经被广泛的报道,通过形成这种特殊的形貌,能够有效提高材料的电化学活性表面积,提高材料的利用率,同时也能防止材料在催化循环过程中相互团聚而失去活性。而纳米片,能够最大程度上提高Pt原子的利用率,进一步提高Pt基纳米材料在催化中活性。既具有多支结构,又具有片状结构的Pt纳米材料还没有被报导过。
Pt基材料是应用最为广泛的甲醇燃料电池阳极催化剂,Pt基材料的结构直接影响甲醇氧化的电催化活性。所述的甲醇燃料电池(Direct Methanol FuelCell,简称DMFC)是以甲醇作为电池的燃料,将甲醇和氧化剂的化学能转变为电能的一种新型电池,它具有高密度,易处理,环境友好以及较低操作温度的特点。
Pt基纳米金属催化剂作为稳定高效的催化剂可绿色高效地分解双氧水,双氧水是各国科学家最早认识的化学过氧化物产氧剂,具有产氧量大,成本较低,无须加热,无毒绿色以及环境友好等特点,它既可以作为双组元液体推进剂的氧化剂,也可以作为单组元推进剂使用,在绿色液体化学推进剂有着广泛的应用前景,已经引起了国内外的关注,期望它能够在将来的航天工业中部分取代通用的高毒推进剂。
发明内容
本发明目的是合成一种具有多支以及大的比表面积的Pt基纳米材料,解决催化剂催化活性和催化剂高效循环使用的技术问题,并且可作为稳定高效的催化剂应用于甲醇燃料电池与绿色高效地分解双氧水。
本发明是通过以下技术方案来实现:
一种Pt片三叉戟纳米催化剂的制备方法,用乙酰丙酮铂作为前驱体,氟化铵作为调控剂,温度130-180℃,H2条件下,在油胺溶液中合成Pt基的片状多支结构的纳米催化剂。
其反应方程式如下:
进一步,一种Pt片三叉戟纳米催化剂的制备方法具体包括下述步骤:
(S1)将一定量的氟化铵加入到溶剂油胺中,100℃下,氮气保护搅拌30min,使氟化铵分散均匀;
(S2)加入一定量的乙酰丙酮Pt,继续搅拌30min,溶解;
(S3)将反应管转移到压力釜中,压力釜抽真空,然后充换氢气3次,最后加上一定量的氢气压氛围,放入到130℃油浴中,控制搅拌速度;
(S4)升温至165℃,保持4h,反应结束,正己烷和乙醇离心洗涤3次,即得到上述Pt片三叉戟纳米催化剂。
进一步,控制氟化铵与乙酰丙酮Pt的加入量,可以调控Pt片的厚度。
进一步,控制氢气压的大小,可以调控Pt支的长短。
Pt片三叉戟纳米催化剂催化剂适用于甲醇燃料电池阳极催化剂和双氧水的催化分解产氧反应。
与现有技术相比,本发明的有益效果是:
(1)本发明方法制备催化剂工艺简单,操作方便,易于控制,反应温度低,催化剂制备成本较低;
(2)本发明制备的纳米催化剂具有较大的比表面积,这有利于大大促进甲醇的电催化氧化反应与双氧水的催化分解产氧;
(3)本发明制备的纳米催化剂,在对一定浓度的甲醇溶液的电催化氧化过程中显示出较商业Pt/C催化剂更强的抗中毒性能和更高的电催化稳定性;能够在常温常压下高效分解双氧水,整个过程绿色环保,具有明显的优势,同时能有效的降低能耗。
附图说明
图1是本发明制备的Pt片三叉戟纳米催化剂的TEM图(500nm)。
图2是本发明制备的Pt片三叉戟纳米催化剂的TEM图(200nm)。
图3是本发明制备的Pt片三叉戟纳米催化剂的高分辨TEM图。
具体实施方式
下面结合实施例对本发明作进一步详细的描述,但发明的实施方式不限于此。
实施例1
Pt片三叉戟纳米催化剂的制备:
68mg氟化铵+10ml油胺,100℃下,氮气保护搅拌30min,使氟化铵分散均匀,再49mg乙酰丙酮Pt,继续搅拌30min,溶解;将反应管转移到压力釜中,压力釜抽真空,然后充换氢气3次,最后加上8bar H2压氛围,放入到130℃油浴中,控制搅拌速度;升温至165℃,保持4h;反应结束,正己烷和乙醇离心洗涤3次。所制备的Pt片三叉戟纳米催化剂的TEM图以及高分辨TEM见图1、图2、图3。
Pt片三叉戟纳米催化剂作为电化学反应催化剂的测试:
工作电极为涂上了Pt片三叉戟纳米催化剂的铂碳电极,催化剂用量:0.07mg cm-2;对电极为铂电极;参比电极为饱和甘汞电极(SCE);电解液为0.5mol L-1HClO4+0.5mol L- 1CH3OH;电位扫描速度为50mV s-1;电解液温度为25℃。Pt片三叉戟在甲醇氧化中的活性非常优异,利用商业的Pt/C催化剂作为对比。Pt片三叉戟的电化学表面积为40.0m2g-1,是Pt/C(52.1m2g-1)的76.7%。在1mol/L+0.1HClO4mol/L的溶液中测定催化剂的前电流和后电流。Pt片三叉戟的前电流和后电流的比是1.54,高于Pt/C(1.32)。这表明Pt三叉戟对于CO等毒性物质具有更好的容忍性。同时,Pt片三叉戟对应的氧化电流密度要低于Pt/C,也表明Pt片三叉戟能够在较低的电位去除中毒物质CO等。Pt片三叉戟的质量活性为0.57mA μg-1Pt,为Pt/C(0.24mA μg-1Pt)的2.37倍,比活性为1.42mA cm-2,是Pt/C的(0.46mA cm-2)的3.08倍,都具有非常优异的性能。
Pt片三叉戟纳米催化剂作为催化剂的双氧水分解产氧实验:
常温常压下,取50mg的Pt片三叉戟纳米催化剂,加入一定量一定浓度的双氧水溶液中,采用排水法收集产生的氧气,并分别计算在5min,20min产生氧气的量,并对催化剂进行循环测试。其作为催化剂对于双氧水分解产氧结果如下表所示:
实施例2
Pt片三叉戟纳米催化剂的制备:
68mg氟化铵+10ml油胺,100℃下,氮气保护搅拌30min,使氟化铵分散均匀,再49mg乙酰丙酮Pt,继续搅拌30min,溶解;将反应管转移到压力釜中,压力釜抽真空,然后充换氢气3次,最后加上8bar H2压氛围,放入到130℃油浴中,控制搅拌速度;升温至165℃,保持4h;反应结束,正己烷和乙醇离心洗涤3次。所制备的Pt片三叉戟纳米催化剂的TEM图以及高分辨TEM见图1、图2、图3。
Pt片三叉戟纳米催化剂作为电化学反应催化剂的测试:
工作电极为涂上了Pt片三叉戟纳米催化剂的铂碳电极,催化剂用量:0.07mgcm-2;对电极为铂电极;参比电极为饱和甘汞电极(SCE);电解液为0.5mol L-1HClO4+0.5mol L- 1CH3OH;电位扫描速度为50mV s-1;电解液温度为25℃。Pt片三叉戟在甲醇氧化中的稳定性也非常优异,利用商业的Pt/C催化剂作为对比。在2000圈的循环后,Pt片三叉戟保留了原始电化学表面积的87.5%,而Pt/C只保留了71%。甲醇氧化电流也能说明Pt片三叉戟的稳定性,2000圈后,Pt片三叉戟的氧化电流降低了13%,而Pt/C降低了32%。
Pt片三叉戟纳米催化剂作为催化剂的双氧水分解产氧实验:
取50mg催化剂,加入到100ml15%浓度的双氧水溶液中,分别收集5min,20min的出气量。每次反应30min后离心收集催化剂,加入到100ml15%浓度的双氧水溶液中,分别收集5min,20min的出气量,循环7次。其作为催化剂对于双氧水分解产氧循环结果如下表所示:
循环次数 | 5min收集量(L) | 20min收集量(L) |
1 | 2.34 | 4.75 |
2 | 2.41 | 4.64 |
3 | 2.31 | 4.72 |
4 | 2.54 | 4.81 |
5 | 2.29 | 4.68 |
6 | 2.37 | 4.76 |
7 | 2.27 | 4.62 |
本发明公开发明了一种Pt片三叉戟纳米催化剂及其制备方法和应用,以乙酰丙酮铂(Pt(acac)2)和一定量的油胺(OAm)为原料,氟化铵作为调节剂,在一定H2压强下制备了这种具有高比表面积的Pt基纳米催化剂。将这种催化剂进行了电化学测试及双氧水分解产氧的实验。结果表明本发明制备的纳米催化剂,在对一定浓度的甲醇溶液的电催化氧化过程中显示出较强的抗中毒性能和较高的电催化稳定性,优于商业Pt/C催化剂;能够在常温常压下实现双氧水的催化分解,值得注意的是,不论是甲醇的电催化过程还是双氧水的催化分解过程,该催化剂能够实现特别好的循环利用性能,同时能有效的降低能耗,实现整个催化过程的绿色和高效,与商业的催化剂相比,具有较好的优越性。
Claims (4)
1.一种Pt片三叉戟纳米催化剂的制备方法,其特征在于,用乙酰丙酮铂作为前驱体,氟化铵作为调控剂,温度130-180℃,氢气条件下,在油胺溶液中合成Pt基的片状多支结构的纳米催化剂;
其反应方程式如下:
2.根据权利要求1所述的一种Pt片三叉戟纳米催化剂的制备方法,其特征在于,包括下述步骤:
(S1)将一定量的氟化铵加入到溶剂油胺中,100℃下,氮气保护搅拌30min,使氟化铵分散均匀;
(S2)加入一定量的乙酰丙酮铂,继续搅拌30min,溶解;
(S3)将反应管转移到压力釜中,压力釜抽真空,然后充换氢气3次,最后加上一定量的氢气压氛围,放入到130℃油浴中,控制搅拌速度;
(S4)升温至165℃,保持4h,反应结束,正己烷和乙醇离心洗涤3次,即得到上述Pt片三叉戟纳米催化剂。
3.根据权利要求1~2任意一项所述的一种Pt片三叉戟纳米催化剂的制备方法,其特征在于,控制氟化铵与乙酰丙酮铂的加入量,可以调控Pt片的厚度。
4.根据权利要求1~2任意一项所述的一种Pt片三叉戟纳米催化剂的制备方法,其特征在于,控制氢气压的大小,可以调控Pt支的长短。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610571467.0A CN106179331A (zh) | 2016-07-20 | 2016-07-20 | 一种Pt片三叉戟纳米催化剂的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610571467.0A CN106179331A (zh) | 2016-07-20 | 2016-07-20 | 一种Pt片三叉戟纳米催化剂的制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106179331A true CN106179331A (zh) | 2016-12-07 |
Family
ID=57493548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610571467.0A Pending CN106179331A (zh) | 2016-07-20 | 2016-07-20 | 一种Pt片三叉戟纳米催化剂的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106179331A (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107866579A (zh) * | 2017-12-11 | 2018-04-03 | 温州大学 | 一种多枝Pt金属纳米晶的合成方法 |
CN108649242A (zh) * | 2018-03-21 | 2018-10-12 | 南京师范大学 | 一种二维多孔Pt纳米片的制备方法及其所得材料和应用 |
CN111069625A (zh) * | 2020-01-06 | 2020-04-28 | 昆明理工大学 | 一种片状铂纳米颗粒的制备方法 |
CN113275588A (zh) * | 2021-05-13 | 2021-08-20 | 江南大学 | 一种卤素掺杂铂的电解水纳米催化材料及其制备方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103696016A (zh) * | 2013-11-27 | 2014-04-02 | 浙江大学 | 一种铂铜合金纳米枝晶及其制备方法 |
CN104043841A (zh) * | 2014-06-06 | 2014-09-17 | 苏州创科微电子材料有限公司 | 一种利用氢气制备金属纳米材料的方法 |
-
2016
- 2016-07-20 CN CN201610571467.0A patent/CN106179331A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103696016A (zh) * | 2013-11-27 | 2014-04-02 | 浙江大学 | 一种铂铜合金纳米枝晶及其制备方法 |
CN104043841A (zh) * | 2014-06-06 | 2014-09-17 | 苏州创科微电子材料有限公司 | 一种利用氢气制备金属纳米材料的方法 |
Non-Patent Citations (5)
Title |
---|
LISE-MARIE LACROIX ET AL.: "Tuning complex shapes in platinum nanoparticles: from cubic dendrites to fivefold stars", 《ANGEW.CHEM.INT.ED.》 * |
NANA DU ET AL.: "Trimetallic tristar nanostructures:tuning electronic and surface structures for enhanced electrocatalytic hydrogen evolution", 《ADV.MATER.》 * |
SEAN MAKSIMUK ET AL.: "Planar tripods of platinum:formation and self-assembly", 《PHYS.CHEM.CHEM.PHYS.》 * |
梅素娟等: "凹形树突状PtCu纳米催化剂的合成及对甲醇的电催化", 《无机化学学报》 * |
谢卫等: "《二氧化钛纳米材料在烟草减害中的应用》", 30 April 2016 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107866579A (zh) * | 2017-12-11 | 2018-04-03 | 温州大学 | 一种多枝Pt金属纳米晶的合成方法 |
CN107866579B (zh) * | 2017-12-11 | 2020-04-10 | 温州大学 | 一种多枝Pt金属纳米晶的合成方法 |
CN108649242A (zh) * | 2018-03-21 | 2018-10-12 | 南京师范大学 | 一种二维多孔Pt纳米片的制备方法及其所得材料和应用 |
CN111069625A (zh) * | 2020-01-06 | 2020-04-28 | 昆明理工大学 | 一种片状铂纳米颗粒的制备方法 |
CN113275588A (zh) * | 2021-05-13 | 2021-08-20 | 江南大学 | 一种卤素掺杂铂的电解水纳米催化材料及其制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105170169B (zh) | 一种氮掺杂石墨烯‑铁基纳米颗粒复合型催化剂及其制备方法 | |
CN103022509B (zh) | 微型直接甲醇燃料电池膜电极及其制备方法 | |
CN1964111A (zh) | 一种质子交换膜燃料电池的电极、膜电极及制法和应用 | |
CN106179331A (zh) | 一种Pt片三叉戟纳米催化剂的制备方法 | |
Sun et al. | Understanding mass and charge transports to create anion-ionomer-free high-performance alkaline direct formate fuel cells | |
WO2005117171A1 (en) | Ruthenium-rhodium alloy electrode catalyst and fuel cell comprising the same | |
Ong et al. | Applications of graphene nano-sheets as anode diffusion layers in passive direct methanol fuel cells (DMFC) | |
CN109713342B (zh) | 一种电化学式的氨气重整制氢装置及方法 | |
CN104726891B (zh) | 一种具有内部消氢功能的质子交换膜水电解器及其制作方法 | |
Pan et al. | Mathematical modeling of direct ethylene glycol fuel cells incorporating the effect of the competitive adsorption | |
CN102916209B (zh) | 一种无膜的直接醇燃料电池及其制造方法 | |
CN107020075A (zh) | 二氧化碳电化学还原单质铋催化剂及其制备和应用 | |
CN104538642A (zh) | 一种直接甲醇燃料电池硫掺杂碳纳米管载Pt催化剂及其制备方法 | |
CN103531826B (zh) | 一种基于牺牲模板法构建直接甲醇燃料电池纳米多孔结构膜电极的方法 | |
CN100521317C (zh) | 用于直接甲醇燃料电池的膜电极单元及其制造方法 | |
Thiagarajan et al. | Experimental investigation on DMFCs using reduced noble metal loading with NiTiO3 as supportive material to enhance cell performances | |
CN105609789A (zh) | 一种York-shell型氮掺杂碳纳米笼包覆铂纳米颗粒的高抗醇性能氧还原电催化剂制备方法 | |
CN102916201A (zh) | 一种炭载钯纳米催化剂及其制备方法 | |
CN109659571B (zh) | 一种二氧化碳电化学还原催化剂及在零距离反应器中的应用 | |
FAN et al. | Electrochemical carbon dioxide reduction in flow cells | |
CN113594480B (zh) | 一种杂原子共掺杂的非贵金属基碳材料及其制备方法、应用 | |
CN102810678B (zh) | 一种直接甲醇燃料电池催化剂及其制备方法 | |
CN110416581A (zh) | 一种阳极液流均相催化燃料电池及其制备方法 | |
JP2010536152A (ja) | 直接酸化型燃料電池用担持型触媒層 | |
CN111962099A (zh) | 用于电催化生产过氧化氢的电极、其制备方法与应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |