JP2013508152A - 炭素の酸化物を分解するための光触媒材料 - Google Patents
炭素の酸化物を分解するための光触媒材料 Download PDFInfo
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- JP2013508152A JP2013508152A JP2012535962A JP2012535962A JP2013508152A JP 2013508152 A JP2013508152 A JP 2013508152A JP 2012535962 A JP2012535962 A JP 2012535962A JP 2012535962 A JP2012535962 A JP 2012535962A JP 2013508152 A JP2013508152 A JP 2013508152A
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- carbon
- component
- photoexcited electrons
- oxide
- photocatalytic composite
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Abstract
Description
(1)光励起電子と正孔の再結合が実質的に発生しない。再結合は、結晶の欠陥に起因して結晶構造内で生じる。
(2)光触媒の同じ場所での酸化および還元反応の同時進行が実質的に発生しない。同じ場所での同時酸化還元反応は、酸化還元電位をもたらし、これは非効率的な触媒活性をもたらし得る。実施形態において、光触媒は、光触媒の同じ場所での同時酸化還元反応をもたらさない。
(3)可視光照射における光触媒活性。
(4)エネルギー変換の高い量子効率。例えば、TiOxNyの量子効率は、快晴日の入射日光で100cm2で約75%であり、電力は約7.5ワットである。
(5)サイズ制御クラスタまたはサイズ制御粒子の容易な堆積。
1)5重量%の炭酸カルシウムおよび2重量%の炭化タングステンを、30mlの2Mアンモニアおよび20mlの5%氷酢酸を含む溶液が入った丸底フラスコに入れる。
2)上記組成物を撹拌する。
3)5.9mlの20mmolチタン−テトラ−イソプロポキシドを一滴ずつ添加する。
4)真空スプレーコーティングチャンバ内の空気不含環境下、430℃の温度で、ITOガラスまたは任意の他の好適な基板/任意の表面上にスプレーコーティングする。
(1)CO2からその構成物質であるCおよびO2またはCOへの分解。
(2)大規模に展開した場合、現在の地球温暖化という気候的危機を軽減し得る大気中CO2の低減。
(3)本アプローチにおいて使用される単純なプロセスおよび材料と比較するとコスト構造に起因して高価である、ケイ素系アプローチの代替。
(4)カーボンクレジットを請求するための、市街地、CO2を生成する石炭/ガス/石油火力発電所、家屋の屋根の上および家屋の外壁上、オフィス/ホテル街、ならびにバス停/駐車場等の様々な場所における、光触媒複合材料単独、またはソーラーパネルのパネル技術と併せた導入。
Claims (20)
- (a)光励起電子を生成し、可視光を吸収する少なくともある特定の最小バンドギャップおよび光励起電子と正孔の再結合を実質的に防止する構造を有する、第1の成分と、
(b)炭素の酸化物を吸着/吸収する、第2の成分と、
(c)光励起電子を使用して炭素の酸化物を炭素および酸素に分解する、第3の成分と
を含む光触媒複合材料。 - 第1の成分が、光触媒を含む、請求項1に記載の材料。
- 光触媒が、半導体を含む、請求項2に記載の材料。
- 光触媒が、オキシ硝酸チタンを含む、請求項2に記載の材料。
- ある特定の最小バンドギャップが、少なくとも約3.4eVである、請求項1に記載の材料。
- 光触媒が、結晶質である、請求項2に記載の材料。
- 第2の成分が、I族またはII族の炭酸塩を含む、請求項1に記載の材料。
- 第2の成分が、CaCO3、MgCO3、Na2CO3、NaHCO3またはこれらの組合せを含む、請求項1に記載の材料。
- 第3の成分が、WC、TaO2、Pd、Pt、Ru、Snまたはこれらの組合せを含む、請求項1に記載の材料。
- 基板と、
(a)光励起電子を生成し、可視光を吸収する少なくともある特定の最小バンドギャップおよび光励起電子と正孔の再結合を実質的に防止する構造を有する、第1の成分と、
(b)炭素の酸化物を吸着/吸収する、第2の成分と、
(c)光励起電子を使用して炭素の酸化物を炭素および酸素に分解する、第3の成分と
を含む光触媒複合材料と
を備える、炭素隔離デバイス。 - 基板が、透明または不透明な非導電性材料を含む、請求項10に記載のデバイス。
- 基板が、石英、プラスチック、ガラス、壁、屋根、またはこれらの組合せである、請求項10に記載のデバイス。
- 基板と光触媒複合材料との間に導電層をさらに備える、請求項10に記載のデバイス。
- 導電層が、透明または不透明である、請求項13に記載のデバイス。
- 導電層が、金属層、インジウム・スズ酸化物層、酸化亜鉛層、酸化アルミニウム層、またはこれらの組合せを含む、請求項13に記載のデバイス。
- 炭素の酸化物を光触媒複合材料に曝露することと、炭素の酸化物を分解して炭素および酸素を形成することとを含み、光触媒複合材料は、光励起電子を生成し、炭素の酸化物を吸着/吸収し、光励起電子を使用して炭素の酸化物をカーボンブラックおよび酸素に分解する、炭素隔離方法。
- 炭素の酸化物が、二酸化炭素、一酸化炭素、亜酸化炭素、またはこれらの組合せを含む、請求項16に記載の方法。
- 光触媒複合材料が、
(a)光励起電子を生成し、可視光を吸収する少なくともある特定の最小バンドギャップおよび光励起電子と正孔の再結合を実質的に防止する構造を有する、第1の成分と、
(b)炭素の酸化物を吸着/吸収する、第2の成分と、
(c)光励起電子を使用して炭素の酸化物を炭素および酸素に分解する、第3の成分と
を含む、請求項16に記載の方法。 - 光触媒複合材料の表面からカーボンブラックを除去することをさらに含む、請求項16に記載の方法。
- 炭素の酸化物を生成する領域において実行される、請求項16に記載の方法。
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US12/638,154 US8946112B2 (en) | 2009-10-30 | 2009-12-15 | Photocatalytic material for splitting oxides of carbon |
US12/638,154 | 2009-12-15 | ||
PCT/IB2010/054066 WO2011051827A1 (en) | 2009-10-30 | 2010-09-09 | Photocatalytic material for splitting oxides of carbon |
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CN105833687B (zh) * | 2016-04-29 | 2018-09-07 | 广东工业大学 | 一种除臭装置 |
CN108148650A (zh) * | 2018-01-03 | 2018-06-12 | 清华大学 | 二维材料微纳片与碳量子点复合的润滑油及其制备方法 |
CN108339383B (zh) * | 2018-01-30 | 2020-12-18 | 徐明好 | 一种二氧化碳碳氧分离方法及其专用装置 |
CN110668416B (zh) * | 2019-10-08 | 2023-06-27 | 扬州大学 | 一种光催化还原co2的方法 |
CN114162813B (zh) * | 2021-12-23 | 2023-12-26 | 南京大学 | 一种利用光化学反应直接将二氧化碳转换为固态碳的方法 |
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