KR101435720B1 - Nb가 도핑된 TiO2 나노섬유의 비표면적 제어방법 - Google Patents
Nb가 도핑된 TiO2 나노섬유의 비표면적 제어방법 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 107
- 239000002243 precursor Substances 0.000 claims abstract description 95
- 239000002121 nanofiber Substances 0.000 claims abstract description 92
- 239000010955 niobium Substances 0.000 claims abstract description 70
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 38
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001523 electrospinning Methods 0.000 claims abstract description 20
- 239000010936 titanium Substances 0.000 claims description 47
- 229910052719 titanium Inorganic materials 0.000 claims description 36
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 35
- 239000002270 dispersing agent Substances 0.000 claims description 14
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 8
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 6
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 6
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 6
- 239000011118 polyvinyl acetate Substances 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- ZTILUDNICMILKJ-UHFFFAOYSA-N niobium(v) ethoxide Chemical compound CCO[Nb](OCC)(OCC)(OCC)OCC ZTILUDNICMILKJ-UHFFFAOYSA-N 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- ZWYDDDAMNQQZHD-UHFFFAOYSA-L titanium(ii) chloride Chemical compound [Cl-].[Cl-].[Ti+2] ZWYDDDAMNQQZHD-UHFFFAOYSA-L 0.000 claims description 4
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 claims description 3
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims description 3
- UBZYKBZMAMTNKW-UHFFFAOYSA-J titanium tetrabromide Chemical compound Br[Ti](Br)(Br)Br UBZYKBZMAMTNKW-UHFFFAOYSA-J 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002114 nanocomposite Substances 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
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- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
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- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D39/00—Filtering material for liquid or gaseous fluids
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
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Abstract
본 발명에 따르면, 전기방사법에 의해 높은 비표면적을 가지는 주름진 형태의 Nb가 도핑된 TiO2 나노섬유를 성공적으로 제조할 수 있으며, 아나타제(anatase) 구조로부터 루틸(rutile) 구조까지 다양한 형태의 TiO2 나노섬유를 제조할 수 있다.
Description
도 2는 본 발명의 일실시예들에 따라 제조된 Nb가 도핑된 TiO2 나노섬유(NTO NFs)들을 전계방출주사전자현미경으로 측정한 FESEM 사진이다.
도 3은 본 발명의 일실시예들에 따라 제조된 Nb가 도핑된 TiO2 나노섬유(NTO NFs)들을 투과전자현미경(TEM)으로 측정한 TEM 이미지를 나타낸 사진이다.
도 4는 상기 실시예 1 내지 4에 따라 제조된 소성 전의 Nb가 도핑된 TiO2 나노섬유(NTO NFs)들을 전계방출주사전자현미경으로 측정한 FESEM 사진이다.
Claims (16)
- Ti 전구체 대비 니오븀(Nb) 전구체의 함량을 0.1 내지 60중량%의 범위로 조절하여 전기방사하는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(Nb-doped TiO2 nanofibres, NTO NFs)의 비표면적 제어방법에 있어서,
상기 Nb가 도핑된 TiO2 나노섬유(NTO NFs)는 니오븀(Nb) 전구체의 함량이 0.1~20중량%에서는 비표면적이 10 내지 90㎡/g인 아나타제형 NTO NFs이고, 니오븀(Nb) 전구체의 함량이 20~60중량%에서는 비표면적이 90 내지 130㎡/g인 루틸형 NTO NFs인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 삭제
- 제1항에 있어서,
S1) 티타늄 전구체, 분산제, 안정제 및 용매를 혼합하여 티타늄 전구체 용액을 제조하는 단계;
S2) 상기 S1)단계의 티타늄 전구체 용액에 니오븀(Nb) 전구체를 첨가하는 단계;
S3) 상기 S2)단계의 전구체 용액을 전기방사하여 Nb가 도핑된 TiO2 나노섬유를 제조하는 단계; 및
S4) 상기 S3)단계의 Nb가 도핑된 TiO2 나노섬유를 소성하여 결정화하는 단계;
를 포함하는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(Nb-doped TiO2 nanofibres, NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 티타늄 전구체는 티타늄 에톡시드(titanium ethoxide), 티타늄 부톡시드(titanium butoxide), 티타늄 이소프로폭시드(titanium isopropoxide), 티타늄 테트라 이소프로폭시드(titanium tetra isopropoxide), 티타늄 클로라이드(titanium chloride), 티타늄 디클로라이드(titanium dichloride, TiCl2), 티타늄 트리클로라이드(titanium trichloride, TiCl3), 티타늄 테트라클로라이드(titanium tetrachloride, TiCl4), 티타늄 브로마이드(titanium Bromide, TiBr4) 및 티타늄 옥시설페이트(titanium oxysulfate) 중 선택된 어느 하나 이상인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 티타늄 전구체는 전구체 용액 중 0.1 내지 15중량%로 포함되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 분산제는 아세트산, 질산, 염산 및 황산 중 선택된 어느 하나 이상인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 분산제는 전구체 용액 중 1 내지 80중량%로 포함되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 안정제는 폴리비닐피롤리돈(polyvinylpyrrolidone, PVP), 폴리메틸메타크릴레이트(polymethlymethacrylate, PMMA), 폴리비닐알코올 (polyvinyl alcohol, PVA), 폴리비닐아세테이트(polyvinyyl acetate, PVAc) , 폴리스타이렌(polystylene, PS), 폴리아크릴로니트릴(polyacrylonitrile, PAN) 및 폴리비닐리덴 플루오라이드(poly vinylidene fluoride, PVDF) 중 선택된 어느 하나 이상인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 안정제는 전구체 용액 중 4 내지 30중량%로 포함되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 용매는 N,N-디메틸포름아미드, 에탄올, 메탄올, 프로판올, 부탄올, 테트라하이드로퓨란(THF), 아세톤, 이소프로필 및 알코올 중 선택된 어느 하나 이상인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 니오븀(Nb) 전구체는 니오븀 에톡시드(niobium ethoide), 니오븀 펜톡시드(niobium pentoxide, Nb2O5), 니오븀 클로라이드(niobium chloride) 및 니오븀 나이트라이드(niobium nitride) 중 선택된 어느 하나 이상인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 니오븀(Nb) 전구체는 Ti 전구체 대비 0.1 내지 60중량%로 포함되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 전기방사는 전구체 용액을 0.01~0.05mL/h로 공급하면서 10 내지 20kV 전압에서 수행되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제3항에 있어서,
상기 소성은 400 내지 600℃에서 3~7시간 동안 수행되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs)의 비표면적 제어방법. - 제1항, 제3항 내지 제14항 중 어느 한 항 기재의 방법으로 제조되어 비표면적이 10 내지 130㎡/g이고, 지름이 30 내지 150㎚인 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs).
- 제15항에 있어서,
상기 Nb가 도핑된 TiO2 나노섬유는 촉매 담체, TCO(Transparent Conducting Oxide) 재료 또는 태양전지에 적용되는 것을 특징으로 하는 Nb가 도핑된 TiO2 나노섬유(NTO NFs).
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