JP2015521104A - 光触媒材、その製造方法及び光触媒装置 - Google Patents
光触媒材、その製造方法及び光触媒装置 Download PDFInfo
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- JP2015521104A JP2015521104A JP2015513881A JP2015513881A JP2015521104A JP 2015521104 A JP2015521104 A JP 2015521104A JP 2015513881 A JP2015513881 A JP 2015513881A JP 2015513881 A JP2015513881 A JP 2015513881A JP 2015521104 A JP2015521104 A JP 2015521104A
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- Prior art keywords
- metal oxide
- metal
- photocatalyst material
- oxide film
- particles
- 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.)
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- 239000000463 material Substances 0.000 title claims abstract description 70
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 102
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 102
- 239000002923 metal particle Substances 0.000 claims abstract description 33
- 239000002245 particle Substances 0.000 claims abstract description 32
- 230000001699 photocatalysis Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000002243 precursor Substances 0.000 claims description 18
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000012702 metal oxide precursor Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000003980 solgel method Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 3
- 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 3
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052705 radium Inorganic materials 0.000 claims description 3
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000001877 deodorizing effect Effects 0.000 claims description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- 239000011800 void material Substances 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 17
- 229910010413 TiO 2 Inorganic materials 0.000 description 15
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- -1 superoxide anions Chemical class 0.000 description 3
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 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 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HORQAOAYAYGIBM-UHFFFAOYSA-N 2,4-dinitrophenylhydrazine Chemical compound NNC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O HORQAOAYAYGIBM-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000012691 Cu precursor Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910003771 Gold(I) chloride Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000012696 Pd precursors Substances 0.000 description 1
- 101150003085 Pdcl gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003256 environmental substance Substances 0.000 description 1
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- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
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- 229920003002 synthetic resin Polymers 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
Description
実施例1:Pt/TiO2の製造
イソプロピルアルコールを溶媒とし、チタンテトライソプロポキシド10wt%溶液を製造する。これを30分間撹拌した後、濃い窒酸を少量添加して加水分解させた。その後、30分間の撹拌を通じて脱水、脱アルコールすることによってTiO2ゾルを製造した。
3℃/minの昇温速度で熱処理してTiO2膜を形成した点を除いては、実施例1と同一の方法で光触媒材を製作した。
5℃/minの昇温速度で熱処理してTiO2膜を形成した点を除いては、実施例1と同一の方法で光触媒材を製作した。
Ptドーピング後、5℃/minの昇温速度で熱処理した点を除いては、実施例1と同一の方法で光触媒材を製作した。
実施例1でPtをドーピングする前に得られたTiO2多孔性膜と同一の方法で光触媒材を製造した。
粒子サイズ40nm水準のTiO2ナノ粉末をH2PtCl6 0.01wt%水溶液を用いて1wt%の濃度で分散させることによってTiO2スラリーを製造した後、これを撹拌しながら紫外線を30分間照射した。これをろ過または遠心分離し、TiO2粒子と余液を分離して乾燥することによってPt/TiO2粉末を得た。これを10wt%の濃度で水に分散した後、ボロシリケートガラス上に50nmの厚さでスピンコーティングした。
実施例1〜5の光触媒材に対して投射電子顕微鏡(TEM)写真を撮影して粒子のサイズを評価し、肉眼でおおよその粒子直径サイズの分布範囲を評価し、これを下記の表1に記載した。
実施例1及び比較例1〜2の光触媒材に対してホルムアルデヒド除去性能を評価した。実施例1及び比較例1〜2で製作された光触媒材を20Lの小型チャンバー(ADTEC社製品)内に設置した後、0.08ppmのホルムアルデヒド濃度を有する清浄空気を167cc/minの流量で持続的に流し、換気回数を0.5回/hrにした。光源としては、10Wの白色蛍光灯を使用し、照度を1000luxに設定した。ホルムアルデヒド除去率は、チャンバーに入る前の濃度とチャンバーを通過した後の濃度を測定して計算した後、これを下記の表2に記載した。濃度は、DNPH(2,4―dinitrophenylhydrazine)カートリッジを用いて10Lに対する量を濃縮し、高性能液体クロマトグラフィー(HPLC、Agilent社製品)で分析した。
Claims (17)
- 空隙を含む多孔性の第1の金属酸化物膜;及び
前記空隙の内部に形成された第2の金属粒子または第2の金属酸化物粒子;
を含むことを特徴とする光触媒材。 - 380nm〜780nmの波長範囲の可視光線に対して活性を有する、請求項1に記載の光触媒材。
- 前記第1の金属酸化物膜は、平均直径が20nm〜100nmの第1の金属酸化物粒子を含む、請求項1に記載の光触媒材。
- 前記第2の金属粒子及び前記第2の金属酸化物粒子の平均直径がそれぞれ1nm〜10nmである、請求項1に記載の光触媒材。
- 前記多孔性の第1の金属酸化物膜の厚さは30nm〜100nmである、請求項1に記載の光触媒材。
- 前記第1の金属酸化物膜に含まれた第1の金属酸化物は、酸化チタン、酸化タングステン、酸化亜鉛、酸化ニオビウム及びこれらの組み合わせから選ばれた少なくとも一つを含む、請求項1に記載の光触媒材。
- 前記第2の金属粒子及び前記第2の金属酸化物粒子の第2の金属は、タングステン、クロム、バナジウム、モリブデナム、銅、鉄、コバルト、マンガン、ニッケル、白金、金、セリウム、カドミウム、亜鉛、マグネシウム、カルシウム、ストロンチウム、バリウム、ラジウム及びこれらの組み合わせから選ばれた少なくとも一つの金属を含む、請求項1に記載の光触媒材。
- 前記光触媒材は、前記第2の金属粒子と第2の金属酸化物粒子の重量の総和に対して、前記多孔性の第1の金属酸化物膜を0.1:99.9〜1:99の重量比で含む、請求項1に記載の光触媒材。
- 多孔性の第1の金属酸化物膜を成膜するステップ;
前記第1の金属酸化物膜を第2の金属の前駆体溶液に浸漬させた後、前記多孔性の第1の金属酸化物膜の内部空隙に前記第2の金属の前駆体溶液を浸透させるステップ;及び
前記第2の金属の前駆体溶液を内部空隙に含有した前記多孔性の第1の金属酸化物膜に光を照射し、前記第2の金属の還元によって前記多孔性の第1の金属酸化物膜の内部空隙に前記第2の金属の粒子を形成するステップ;
を含むことを特徴とする光触媒材の製造方法。 - 前記光照射は、UV照射によって行われる、請求項9に記載の光触媒材の製造方法。
- 前記第1の金属酸化物膜は、第1の金属酸化物前駆体を用いるゾルゲル法によって基板上に成膜される、または、第1の金属酸化物粉末、バインダー及び溶媒を含むスラリーを基板に塗布して成膜される、請求項9に記載の光触媒材の製造方法。
- 前記第1の金属酸化物膜が第1の金属酸化物前駆体を用いるゾルゲル法によって基板上に成膜された後、または、第1の金属酸化物粉末及び溶媒を含むスラリーを塗布して成膜された後、熱処理ステップをさらに行い、結晶性を有する前記第1の金属酸化物膜を形成する、または、前記第1の金属酸化物膜内の前記バインダーを除去する、請求項9に記載の光触媒材の製造方法。
- 前記熱処理ステップは、1℃/min〜2℃/minの昇温速度で行われる、請求項12に記載の光触媒材の製造方法。
- 前記空隙の内部に第2の金属粒子が形成された多孔性の前記第1の金属酸化物膜を熱処理し、前記第2の金属粒子の少なくとも一部を酸化させることによって第2の金属酸化物を生成するステップをさらに含む、請求項9に記載の光触媒材の製造方法。
- 前記熱処理ステップは、1℃/min〜2℃/minの昇温速度で行われる、請求項14に記載の光触媒材の製造方法。
- 請求項1から請求項8のいずれか1項による光触媒材を含むことを特徴とする光触媒装置。
- 空気清浄、脱臭または抗菌の用途に適用される、請求項16に記載の光触媒装置。
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