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[1]黄淼煜,李浩勋,徐 智,等.P-Nb2O5的制备及其光催化氧化芳香醇的应用[J].武汉工程大学学报,2025,47(03):259-266.[doi:10.19843/j.cnki.CN42-1779/TQ.202404013]
　HUANG Miaoyu,LI Haoxun,XU Zhi,et al.Preparation of P-Nb2O5 and its application in photocatalytic oxidation of aromatic alcohols[J].Journal of Wuhan Institute of Technology,2025,47(03):259-266.[doi:10.19843/j.cnki.CN42-1779/TQ.202404013]
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P-Nb2O5的制备及其光催化氧化芳香醇的应用
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
47
期数:
2025年03期
页码:
259-266
栏目:
现代大化工
出版日期:
2025-06-30

文章信息/Info

Title:
Preparation of P-Nb2O5 and its application in photocatalytic oxidation of aromatic alcohols
文章编号:
1674 - 2869（2025）03 - 0259 - 08
作者:
1.武汉工程大学化工与制药学院，湖北 武汉 430205；
2.国投新疆罗布泊钾盐有限责任公司，新疆 哈密 839000
Author(s):
1. School of Chemical Engineering & Pharmacy , Wuhan Institute of Technology, Wuhan 430205, China；
2. State Development Investment Corporation Xinjiang Luobupo Potash Co., Ltd, Hami 839000, China
关键词:
Keywords:
分类号:
TQ032
DOI:
10.19843/j.cnki.CN42-1779/TQ.202404013
文献标志码:
A
摘要:
针对铌基半导体材料在光催化选择性氧化芳香醇中存在的催化效率较低以及产物选择性较低等问题，采用非金属元素掺杂的方式来改善光催化剂的能带结构。通过水热法与高温煅烧法，以次磷酸钠为磷源制备了磷化的海胆状Nb2O5催化剂（P-Nb2O5）。利用X射线光电子能谱、紫外可见漫反射光谱以及电子显微镜等手段对其光电性质以及微观结构进行了分析。通过对比磷化前后催化剂的价带位置，P-Nb2O5的价带位置从原先的3.088 eV缩小至2.524 eV，这表明磷化后的Nb2O5光能吸收能力明显提升，同时通过光电流测试，发现适量的磷掺杂还有利于光催化剂光生载流子的分离。该P-Nb2O5在芳香醇的光催化氧化中具有较高选择性（＞99%），具有一定的潜在研究及应用价值。
Abstract:
To address the challenges of low catalytic efficiency and poor product selectivity in niobium-based semiconductor materials for photocatalytic selective oxidation of aromatic alcohols, we proposed a strategy to modulate the energy band structure of photocatalysts via non-metal element doping. Phosphorus-doped sea urchin-like Nb2O5 catalysts (P-Nb2O5) were synthesized through a hydrothermal method followed by high-temperature calcination, using sodium hypophosphite as the phosphorus precursor. The physicochemical properties and microstructure of the catalysts were systematically characterized via X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS), and electron microscopy. Comparative analysis of valence band positions revealed that phosphorus doping reduced the valence band edge of Nb2O5 from 3.088 eV to 2.524 eV, significantly enhancing its photoabsorption capability. Photocurrent measurements further demonstrated that optimal phosphorus doping facilitated efficient separation of photogenerated charge carriers. Notably, the P-Nb2O5 catalyst exhibited exceptional selectivity (>99%) in the photocatalytic oxidation of aromatic alcohols, underscoring its potential for both fundamental research and industrial applications in high-precision photocatalytic systems.

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备注/Memo

备注/Memo:
收稿日期：2024-04-09
基金项目：国家自然科学基金（22272124）
作者简介：黄淼煜，硕士研究生。Email：miaoyuhuang@foxmail.com
*通信作者：盖晓宏，高级工程师。 Email：1491642451@qq.com
引文格式：黄淼煜,李浩勋,徐智,等. P-Nb2O5的制备及其光催化氧化芳香醇的应用［J］. 武汉工程大学学报，2025，47（3）：259-266.
更新日期/Last Update: 2025-07-08