KR20110132893A - 금속 나노입자가 담지된 탄소나노구조체, 이의 제조방법 및 이의 연료전지용 전극 촉매로의 응용 - Google Patents
금속 나노입자가 담지된 탄소나노구조체, 이의 제조방법 및 이의 연료전지용 전극 촉매로의 응용 Download PDFInfo
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- KR20110132893A KR20110132893A KR1020100052488A KR20100052488A KR20110132893A KR 20110132893 A KR20110132893 A KR 20110132893A KR 1020100052488 A KR1020100052488 A KR 1020100052488A KR 20100052488 A KR20100052488 A KR 20100052488A KR 20110132893 A KR20110132893 A KR 20110132893A
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- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/344—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy
- B01J37/345—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy of ultraviolet wave energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
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- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
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- 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
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
Description
도 2는 실시예 1에 따른 나노구조체를 나타낸 원자힘 현미경(AFM) 사진이다[(a), (d): 단층막; (b), (e): 3층 다층막; (c), (f): 5층 다층막].
도 3은 실시예 1에 따른 나노구조체의 내부구조를 나타낸 주사전자현미경(TEM)과 고해상도 주사전자현미경(HRTEM) 사진 및 X-선 분광분석(EDS) 결과이다[(a), (c): 단층막의 TEM 사진, (e): 단층막의 EDS 결과; (b), (d): 5층 다층막의 TEM 사진, (d)의 삽입도: 5층 다층막의 HRTEM 사진, (f): 5층 다층막의 EDS 결과].
도 4는 실시예 2에 따른 나노구조체를 나타낸 AFM 사진 및 동일 나노구조체의 내부구조를 나타낸 TEM, HRTEM 사진 및 EDS 결과이다[(a): 단층막, (b): 5층 다층막의 AFM 사진; (c): 5층 다층막의 TEM 사진, (C)의 삽입도: 5층 다층막의 HRTEM 사진, (d): 5층 다층막의 EDS 결과].
도 5는 실시예 1에 따른 쿼츠 기판에 제작된 나노구조체의 라만 분광법에 의한 광학적 특성을 분석한 그래프이다[(a): 단층막; (b): 3층 다층막; (c): 5층 다층막]. 삽입도는 베어 쿼츠 기판에서의 레퍼런스 스펙트럼을 나타낸 것이다.
도 6은 실시예 2에 따른 쿼츠 기판에 제작된 5층 다층막 나노구조체의 라만 분광법에 의한 광학적 특성을 분석한 그래프이다.
도 7은 실시예 1과 2에 따른 5층 다층막 나노구조체의 과염소산 수용액에서의 전기화학적 특성을 나타내는 순환 전압 전류 곡선(CV)이다.
도 8은 실시예 1과 2에 따른 5층 다층막 나노구조체의 과염소산과 개미산의 혼합 수용액에서의 산화 특성을 비교하는 순환 전압 전류 곡선이다.
도 9는 실시예 1과 2에 따른 5층 다층막 나노구조체의 과염소산과 메탄올의 혼합 수용액에서의 산화 특성을 비교하는 순환 전압 전류 곡선이다.
Claims (16)
- 친수성 블록과 소수성 블록이 포함된 블록공중합체의 역마이셀 및 금속 나노입자 전구체를 함유하는 혼합 용액을 기판 상에 도포하여 금속 나노입자 전구체가 담지된 블록공중합체 박막을 제조하는 단계;
상기 박막을 자외선 조사 및 화학적 환원 처리하여 금속 나노 입자가 담지된 블록공중합체 박막을 제조하는 단계; 및
상기 박막을 열처리하여 금속 나노입자가 담지된 탄소나노구조체를 제조하는 단계
를 포함하는 것을 특징으로 하는 금속 나노입자가 담지된 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 금속 나노 입자가 담지된 블록공중합체 박막에 상기 역마이셀 및 금속 나노입자 전구체를 함유하는 혼합 용액 도포, 자외선 조사 및 화학적 환원 처리 과정을 반복하여 적층함으로써 금속 나노입자가 담지된 블록공중합체의 주기적 다층막을 제조하여 3차원 탄소나노구조체를 제조하는 단계를 추가로 포함하는 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 친수성 블록은 폴리비닐피리딘, 폴리에틸렌옥시드, 폴리아크릴산, 폴리메타크릴산, 폴리비닐알콜, 폴리아크릴아미드 및 폴리스티렌설폰산으로 이루어진 군에서 선택된 1종 이상의 중합체인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 소수성 블록은 폴리스티렌, 폴리올레핀, 폴리알킬아크릴레이트, 폴리이소프렌, 폴리부타디엔, 폴리실록산, 폴리이미다졸, 폴리락티드 및 폴리락톤으로 이루어진 군에서 선택된 1종 이상의 중합체인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 금속 나노입자는 귀금속, 전이 금속 또는 금속 산화물인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 금속 나노입자는 1종 또는 2종 이상의 금속 나노입자를 포함하는 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 금속 나노입자 전구체는 금속 염화물, 금속 질산화물, 금속 산화물의 졸-겔 전구체 또는 친수성 리간드로 개질된 금속 나노입자인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 6 항에 있어서, 상기 친수성 리간드는 히드록시기(-OH) 또는 카르복시기(-COOH)인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 혼합 용액은 친수성 블록 단량체에 대하여 금속 나노입자의 몰비가 0.1 내지 0.7가 되도록 제조하는 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 기판은 실리콘 웨이퍼, 유리, 쿼츠, 금속 또는 플라스틱인 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 자외선 조사는 자외선을 진공분위기에서 200 내지 300 nm의 파장과 20 내지 30 J/cm2의 세기로 0.5 내지 3 시간 동안 처리하는 것을 특징으로 하는 탄소나노구조체의 제조방법.
- 제 1 항에 있어서, 상기 열처리는 비활성 기체 분위기에서 0.5 내지 3 시간 동안 실시하는 탄소나노구조체의 제조방법.
- 제 1 항 내지 제 12 항 중에서 선택된 어느 한 항의 방법에 따라 제조되며, 금속 입자의 배열을 유지하고, 직접 산화 연료전지의 촉매로서의 활성을 보이는 것을 특징으로 하는 금속 나노입자가 담지된 탄소나노구조체.
- 청구항 13의 금속 나노입자가 담지된 탄소나노구조체를 포함하는 바이오센서.
- 청구항 13의 금속 나노입자가 담지된 탄소나노구조체를 포함하는 연료전지용 전극 촉매
- 청구항 13의 금속 나노입자가 담지된 탄소나노구조체를 포함하는 광전지.
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