K, Na and Cl co-doped TiO2 nanorod arrays on carbon cloth for efficient photocatalytic degradation of formaldehyde under UV/visible LED irradiation,Catalysis Science & Technology

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K, Na and Cl co-doped TiO2 nanorod arrays on carbon cloth for efficient photocatalytic degradation of formaldehyde under UV/visible LED irradiation
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-10-30 , DOI: 10.1039/d0cy01918f
Wenyu Diao _{1,

2,

3,

4} , Jun He _{1,

2,

3,

4} , Qiang Wang _{1,

2,

3,

4} , Xi Rao _{1,

2,

3,

4} , Yongping Zhang _{1,

2,

3,

4}

Affiliation

For applicable air purifiers to decompose formaldehyde, it is important to develop TiO₂ based photocatalysts that can be irradiated under visible light and can be anchored on a soft carbon cloth substrate. Herein, we report that rutile TiO₂ nanorod arrays were grown on carbon cloth (TiO₂@CC) by a seed assisted hydrothermal method and subsequently heated with a KCl and NaCl covering to promote K, Na, and Cl ions doping into the TiO₂ nanorods. K, Na, and Cl doping tunes the energy band structure of rutile TiO₂, while the carbon fibers facilitate the electron transfer, improving its photocatalytic activity. Thus, the alkali metal (K, Na) and halogen (Cl) co-doped rutile TiO₂ nanorod arrays (KNCTC) exhibited better photocatalytic degradation of gaseous formaldehyde (HCHO) under UV and visible light irradiation than pure TiO₂. TiO₂ nanorod arrays anchored on soft carbon cloth facilitate the design of an air purifier for degrading formaldehyde.

中文翻译：

碳布上的K，Na和Cl共掺杂的TiO2纳米棒阵列可在紫外/可见LED照射下有效地光催化降解甲醛

对于适用的空气净化器分解甲醛而言，重要的是开发可在可见光下照射并固定在软碳布基材上的TiO ₂基光催化剂。在本文中，我们报道了金红石型TiO ₂纳米棒阵列通过种子辅助水热法在碳布（TiO ₂ @CC）上生长，然后用KCl和NaCl覆盖物加热以促进K，Na和Cl离子掺杂到TiO _2中纳米棒。钾，钠和氯的掺杂可调节金红石型TiO ₂的能带结构，而碳纤维可促进电子转移，从而改善其光催化活性。因此，碱金属（K，Na）和卤素（Cl）共掺杂金红石型TiO ₂纳米棒阵列（KNCTC）在UV和可见光照射下表现出比纯TiO ₂更好的光催化降解气态甲醛（HCHO）。锚定在软碳布上的TiO ₂纳米棒阵列有助于设计用于降解甲醛的空气净化器。

更新日期：2020-11-12

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