JP6586763B2 - 光触媒 - Google Patents
光触媒 Download PDFInfo
- Publication number
- JP6586763B2 JP6586763B2 JP2015079510A JP2015079510A JP6586763B2 JP 6586763 B2 JP6586763 B2 JP 6586763B2 JP 2015079510 A JP2015079510 A JP 2015079510A JP 2015079510 A JP2015079510 A JP 2015079510A JP 6586763 B2 JP6586763 B2 JP 6586763B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- tio
- supported
- performance
- antibacterial
- 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.)
- Active
Links
- 239000011941 photocatalyst Substances 0.000 title claims description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229910052802 copper Inorganic materials 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 67
- 239000010949 copper Substances 0.000 description 53
- 230000000844 anti-bacterial effect Effects 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 238000011068 loading method Methods 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 101710134784 Agnoprotein Proteins 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910017770 Cu—Ag Inorganic materials 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012297 crystallization seed Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
Description
本発明に係る触媒は、窒素、硫黄、炭素、燐のうち少なくとも1つを含有する金属酸化物を基本とする。この金属酸化物として、可視光応答性を有するN−TiO2が好適である。そして、この金属酸化物に金属を担持する。そして、この担持金属として、少なくとも2種利用する。この2種は、それぞれ別に単味担持したものを混合してもよいし、共担持してもよい。
窒素をドープして窒素を含有させた、N−TiO2にCuおよびAgの両方を担持したCu・Ag共担持触媒を以下の方法で合成した。N−TiO2については、WO01/010552、特開2004−988号公報に基づいて合成した粉末を用いた。
N−TiO2にCuおよびAgを各々単味担持した触媒、およびこれらを混合したCu、Ag単味担持触媒混合品を以下の方法で合成した。
容量1Lのパイレックス(登録商標)製シリコンゴム栓付反応管に、恒温恒湿槽によって25℃、50%RH(相対湿度)×24h以上の条件下で保管した触媒0.1g、および評価ガス1200ppmCH3CHO/乾燥空気(N280%,O220%)を封入し、触媒表面にCH3CHOを吸着させるために暗所で一晩静置した。その後UVカットフィルタを装着した蛍光灯(波長410〜700nm)を照射し、照射後0〜28hにおけるCH3CHOの残存濃度および発生するCO2濃度をガスクロマトグラフィー(GC)で評価した。なお、CH3CHOは式1のように中間生成物を経てCO2へ分解する。
CH3CHO+(5/2)O2→(中間生成物)→2CO2+2H2O ・・・ 式1
(中間生成物:CH3COOH、HCOOH等)
本実施形態の触媒と従来のCu単味担持触媒の抗菌性能を比較するために、以下の条件で実験を行った。
(i)触媒無し、(ii)無担持N−TiO2、(iii)0.5wt%Cu/N−TiO2、(iv)0.5wt%Cu・0.3wt%Ag/N−TiO2(共担持)
試験方法:JIS R 1752:2013「ファインセラミックス−可視光応答型光触媒抗菌加工製品の抗菌性試験方法・抗菌効果」9 フィルム密着法
予備照射:ブラックライトブルー蛍光ランプ FL20SBLB 20W(三共電気製) 1.0mW/cm2×23h(UD−36)
菌液(2種):黄色ブドウ球菌 1.5×106/mL 0.15mL
:大腸菌 1.4×106/mL 0.15mL
試験条件:光照射8h、暗所8h
光照射条件:白色蛍光ランプ FL20SSW/18 18W(パナソニック製)
3000Lx(ルクス)×8h
シャープカットフィルタ TypeB使用(380nm以下をカット)
<単味担持触媒(単品)>
Cu単味担持およびAg単味担持した触媒(N−TiO2)を各々入れた反応管内の光照射28h後のCO2発生濃度を図1に示した。
0.5wt%Cu担持N−TiO2を0.05gと、0〜1wt%Ag担持N−TiO2を0.05g混合してCu、Ag単味担持触媒混合品(混合触媒)を作製した。
0.5〜2wt%Cu・0〜1wt%AgのCu・Ag共担持触媒を0.1g作製した。
0.5wt%Cu担持N−TiO2、0〜1wt%Ag担持N−TiO2を混合したCu、Ag単味担持触媒混合品と、同じ金属種・量のCu・Ag共担持触媒の光照射24h後CO2濃度の比較結果を図4に示した。
触媒の抗菌性能の比較結果を図5に示した。この結果から、光照射を8h行った場合は、黄色ブドウ球菌についてはCu担持N−TiO2、Cu・Ag共担持N−TiO2だけでなく、無担持N−TiO2であっても十分な抗菌効果を示すことがわかった。大腸菌については、無担持N−TiO2では抗菌効果は高くないが、Cu担持N−TiO2、Cu・Ag共担持N−TiO2では十分な抗菌効果があった。すなわち、Cu担持N−TiO2とCu・Ag共担持N−TiO2は両者に差がなく、ともに2種類の菌をほとんど壊滅させた。
Claims (2)
- 窒素を含有するTiO2の粉末に、Cu、Agを各々単味担持したものを混合した光触媒。
- 請求項1に記載の光触媒において、
単味におけるCu、Agの各々の担持量が、窒素を含有するTiO2に対して、8wt%以下である光触媒。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015079510A JP6586763B2 (ja) | 2015-04-08 | 2015-04-08 | 光触媒 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015079510A JP6586763B2 (ja) | 2015-04-08 | 2015-04-08 | 光触媒 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016198704A JP2016198704A (ja) | 2016-12-01 |
JP6586763B2 true JP6586763B2 (ja) | 2019-10-09 |
Family
ID=57423285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015079510A Active JP6586763B2 (ja) | 2015-04-08 | 2015-04-08 | 光触媒 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP6586763B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7024327B2 (ja) * | 2017-10-31 | 2022-02-24 | 株式会社豊田中央研究所 | 光触媒体および光触媒体の製造方法 |
CA3097835A1 (en) * | 2018-05-02 | 2019-11-07 | Colorobbia Consulting S.R.L. | Nitrogen-doped tio2 nanoparticles and the use thereof in photocatalysis |
CN109174141A (zh) * | 2018-10-12 | 2019-01-11 | 宝鸡文理学院 | 一种复合纳米光催化材料的制备方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003093890A (ja) * | 2001-09-25 | 2003-04-02 | Mitsubishi Heavy Ind Ltd | 光触媒の調製方法 |
CN1267186C (zh) * | 2003-07-03 | 2006-08-02 | 中国科学院化学研究所 | 一种氮掺杂型二氧化钛可见光催化剂的制备方法 |
WO2005014170A1 (ja) * | 2003-08-08 | 2005-02-17 | Kabushiki Kaisha Toyota Chuo Kenkyusho | 可視光活性を有する光触媒体、その原料及びその製造方法 |
JP4880410B2 (ja) * | 2006-09-28 | 2012-02-22 | 多木化学株式会社 | 光触媒コーティング組成物が被覆された部材 |
JP5383156B2 (ja) * | 2008-10-31 | 2014-01-08 | 東邦チタニウム株式会社 | 硫黄含有酸化チタン化合物、硫黄含有酸化チタン化合物の製造方法、硫黄含有酸化チタン化合物分散液および硫黄含有酸化チタン化合物分散液の製造方法 |
JP5470639B2 (ja) * | 2009-09-09 | 2014-04-16 | 国立大学法人徳島大学 | 薄片様層状化合物 |
JP2012106153A (ja) * | 2010-11-15 | 2012-06-07 | Toyota Central R&D Labs Inc | 光触媒体及びその製造方法 |
KR20170010408A (ko) * | 2014-09-19 | 2017-01-31 | 쇼와 덴코 가부시키가이샤 | 항균·항바이러스성 조성물, 항균·항바이러스제, 광 촉매 및 균·바이러스 불활화 방법 |
-
2015
- 2015-04-08 JP JP2015079510A patent/JP6586763B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2016198704A (ja) | 2016-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Yuan et al. | Design of core-shelled g-C3N4@ ZIF-8 photocatalyst with enhanced tetracycline adsorption for boosting photocatalytic degradation | |
Khalid et al. | Photocatalytic degradation of RhB from an aqueous solution using Ag3PO4/N-TiO2 heterostructure | |
Huang et al. | Effect of reduction treatment on structural properties of TiO 2 supported Pt nanoparticles and their catalytic activity for formaldehyde oxidation | |
TWI510288B (zh) | Titanium oxide photocatalyst carrying copper compound and its manufacturing method | |
Tojo et al. | Iodine-doped TiO2 photocatalysts: correlation between band structure and mechanism | |
Qiu et al. | Hybrid Cu x O/TiO2 nanocomposites as risk-reduction materials in indoor environments | |
Pany et al. | Plasmon induced nano Au particle decorated over S, N-modified TiO2 for exceptional photocatalytic hydrogen evolution under visible light | |
JP6521317B2 (ja) | 脱臭用金属複合化窒化炭素とその製造方法 | |
JP6342225B2 (ja) | 光触媒複合体材料及びその製造方法 | |
JP2009078211A (ja) | 光触媒 | |
Karthikeyan et al. | Pompon Dahlia‐like Cu2O/rGO nanostructures for visible light photocatalytic H2 production and 4‐chlorophenol degradation | |
JP6586763B2 (ja) | 光触媒 | |
KR20090083239A (ko) | 텅스텐계 산화물을 이용한 가시광 응답형 광촉매 조성물 및 그 제조방법 | |
Yang et al. | ZnGaNO solid solution–C3N4 composite for improved visible light photocatalytic performance | |
de Sousa Filho et al. | SrSnO3/g-C3N4 and sunlight: Photocatalytic activity and toxicity of degradation byproducts | |
US9339795B2 (en) | Process of using a catalyst for photo-catalytic degradation of contaminant in water | |
Zhang et al. | Investigation of cocatalysts on silver-modified Sm2Ti2S2O5 photocatalyst for water reduction and oxidation under visible light irradiation | |
Parida et al. | Facile fabrication of hierarchical N-doped GaZn mixed oxides for water splitting reactions | |
Do et al. | Effective Carbon Dioxide Photoreduction over Metals (Fe‐, Co‐, Ni‐, and Cu‐) Incorporated TiO2/Basalt Fiber Films | |
Khaksar et al. | Efficient and green oxidative degradation of methylene blue using Mn-doped ZnO nanoparticles (Zn1− x Mn x O) | |
Luo et al. | Lanthanide–titanium-oxalate clusters and their degradation products, photocurrent response and photocatalytic behaviours | |
JP6999180B2 (ja) | 水素の製造方法 | |
WO2005087371A1 (ja) | 可視光応答性複合酸化物系光触媒とそれを用いた有害化学物質分解除去方法 | |
Merajin et al. | Enhanced gas-phase photocatalytic oxidation of n-pentane using high visible-light-driven Fe-doped WO3 nanostructures | |
CN109201089B (zh) | 一种用于光催化的铕、硒共掺杂二氧化钛氧化石墨烯材料的制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20171228 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20180830 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180925 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20181121 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190312 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190426 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190813 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190826 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6586763 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |