Development of Novel-type of Photocatalyst by Partial Sulfurization of Shape Controlled Composite Oxides Nanoparticles containing Ti or Zr Ion

通过含Ti或Zr离子的形状控制复合氧化物纳米粒子的部分硫化开发新型光催化剂

• 批准号: 17360384
• 负责人: MURAMATSU Atsushi
• 金额: $ 10.11万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360384/
• 关键词: titanium Oxide; Zirconium Oxide; Nanoparticle; Partial Sulfurization; Phtocatalyst; Perovskite; Shape Control; Monodispersed Particle; 触媒調製; チタン酸バリウム; チタン酸ストロンチウム; ジルコン酸バリウム; ジルコン酸ストロンチウム; 部分窒化

Ti or Zr-containing composite oxides with perovskite structures are well known as a functional material of excellent piezoelectric, ferroelectric, and dielectric properties and widely used for the production of gas sensors, transducers, non-volatile memories, capacitors, microwave devices, and insulating films. In the present study, we have developed an efficient procedure for the preparation of Ti-or Zr-containing composite oxides nanoparticles such as BaTiO_3, SrTiO_3, BaZrO_3, and SrZrO_3 in the gel-sol system. Furthermore, the resulting Ti-or Zr-containing nanoparticles were applied as a novel-type of visible light-responsive photocatalyst by the partial sulfurization technique which we have developed. To obtain partially sulfurized Ti-or Zr-containing composite oxides powders with better photoactivity under visible light, the sulfurization behavior of the Ti-or Zr-containing composite oxides is necessary to select an adequate temperature of partial sulfurization. In this regard, the thermogravimetric study of the Ti-or Zr-containing composite oxides nanoparticles prepared by the gel-sol method was carried out by using a quartz spring-type thermobalance in CS_2 atmosphere, and the results were compared with the sulfurization behavior of commercial SrTiO_3 powders with larger particle sizes. For the low-temperature sulfurization, we found that the presence of OH groups plays an important role. Evaluation of the photocatalytic activities of partial sulfurized nanoparticles under visible light revealed that the sulfurization enhances the photocatalytic activities.

钛或锆复合氧化物具有钙钛矿结构，是一种具有优异的压电性、铁电性和介电性的功能材料，广泛用于制作气体传感器、换能器、非易失性存储器、电容器、微波器件和绝缘薄膜。在本研究中，我们开发了一种在凝胶-溶胶体系中有效地制备BaTiO_3、SrTiO_3、BaZrO_3和SrZrO_3等含钛或含锆复合氧化物纳米粒子的方法。此外，通过我们开发的部分硫化技术，将所得到的含钛或含锆纳米颗粒应用于新型可见光响应型光催化剂。为了获得在可见光下具有较好的可见光活性的部分硫化的含钛或锆基复合氧化物粉末，选择合适的部分硫化温度是研究含钛或锆基复合氧化物硫化行为的必要条件。为此，利用石英弹簧式热天平在CS_2气氛中对凝胶-溶胶法制备的含钛或含锆复合氧化物纳米颗粒进行了热重研究，并与商用大颗粒SrTiO_3粉末的硫化行为进行了比较。对于低温硫化，我们发现OH基团的存在起着重要的作用。对部分硫化纳米颗粒在可见光下的光催化活性进行了评价，结果表明硫化提高了光催化活性。

项目成果

Effect of Silicate Ions on Conversion of Ferric Hydroxide to β-FeOOH and α-Fe2O3

• DOI: 10.2320/matertrans.46.155
• 发表时间: 2005-02
• 期刊: Materials Transactions
• 影响因子: 1.2
• 作者: Sangku Kwon;K. Kimijima;K. Kanie;A. Muramatsu;Shigeru Suzuki;E. Matsubara;Y. Waseda

Improvement in SOFC anode performance by finely-structured Ni/YSZ cermet prepared via heterocoagulation.

• DOI: 10.1021/jp0604490
• 发表时间: 2006-03
• 期刊: The journal of physical chemistry. B
• 作者: Y. Sunagawa;Katsutoshi Yamamoto;A. Muramatsu

Promotion of functional thin film by CVRD (chemical vapor reductive deposition)

CVRD（化学气相还原沉积）功能性薄膜的推广

• 发表时间: 2006
• 期刊: SOZAIKEN IHO 62(1,2)
• 作者: 村上聖;山本修一;村上 聖;山本修一;山本 修一;山本修一;Masaki Yoshinaga;M.Yoshinaga;高橋英志;中村貴宏;Yoji Sunagawa;吉永勝己;H.Takahashi;T.Nakamura;Y.Sunagawa;M.Yoshinaga
• 通讯作者: M.Yoshinaga

液相還元選択析出法によるハイブリッドナノ粒子の合成

液相还原选择性沉淀法合成杂化纳米粒子

• 发表时间: 2006
• 期刊: 触媒 48・4
• 作者: 村上聖;山本修一;村上 聖;山本修一;山本 修一;山本修一;Masaki Yoshinaga;M.Yoshinaga;高橋英志
• 通讯作者: 高橋英志

CVRD (Chemical Vapor Reductive Deposition)法による機能性薄膜の特性向上

使用CVRD（化学气相还原沉积）方法改善功能薄膜的性能

• 发表时间: 2006
• 期刊: 東北大学多元物質科学研究所素材工学研究彙報 62・1,2
• 作者: 村上聖;山本修一;村上 聖;山本修一;山本 修一;山本修一;Masaki Yoshinaga;M.Yoshinaga;高橋英志;中村貴宏;Yoji Sunagawa;吉永勝己
• 通讯作者: 吉永勝己