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首页> 外文期刊>Physical chemistry chemical physics: PCCP >One-pot synthesis and Nb4N5 surface modification of Nb4+ self-doped KNbO3 nanorods for enhanced visible-light-driven hydrogen production
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One-pot synthesis and Nb4N5 surface modification of Nb4+ self-doped KNbO3 nanorods for enhanced visible-light-driven hydrogen production

机译：Nb4 +自掺杂KNbO3纳米棒的一锅法合成和Nb4N5表面修饰，以增强可见光驱动的制氢能力

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摘要

Herein, rhombohedral self-doped KNbO3 (S-KN) nanorods were fabricated via a one pot, solvothermal method without using any surfactant. The presence of Nb4+ in S-KN greatly narrows its band gap and thus extends its photoresponse from UV to the visible light region. Moreover, S-KN/Nb4N5 nanorod heterostructures were obtained by nitriding S-KN nanorods for different times, which exhibited significantly enhanced photocatalytic activity for hydrogen production under visible light irradiation. The junction formed between S-KN and Nb4N5 and the Nb4+ self-doping of KN are supposed to be responsible for the enhanced photocatalytic activity of S-KN/Nb4N5. This study also paves the way for the synthesis of other similar photocatalysts.
机译：本文中，通过单锅溶剂热法不使用任何表面活性剂来制备菱形自掺杂的KNbO3（S-KN）纳米棒。 S-KN中Nb4 +的存在极大地缩小了其能带隙，从而将其光响应从UV扩展到可见光区域。此外，通过对S-KN纳米棒进行不同时间的氮化，获得了S-KN / Nb4N5纳米棒的异质结构，在可见光照射下，其对产氢的光催化活性显着增强。 S-KN和Nb4N5之间形成的结和KN的Nb4 +自掺杂被认为是S-KN / Nb4N5增强的光催化活性的原因。该研究也为合成其他类似的光催化剂铺平了道路。

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