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Photochemical synthesis of ultrafine platinum nanocatalysts and their application in the catalytic reduction of nitrophenols
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 63, Issue 3, Pages: 137-146(2024)
- 作者机构：
1.西北民族大学化工学院， 甘肃 兰州 730030
2.甘肃省高校环境友好复合材料及生物质利用省级重点实验室， 甘肃 兰州 730030
- 作者简介：
[ "XIAN Liang（lxian@xbmu.edu.cn）" ]
TIAN Xiaoxia（1726905151@qq.com）
MA Jing（849879969@qq.com）
LI Wei（1747015656@qq.com）
- 基金信息：
DOI：10.13471/j.cnki.acta.snus.ZR20230041
CLC： O643Published：25 May 2024，
Published Online：21 March 2024，
Received：17 December 2023，
Accepted：24 January 2024
扫 描 看 全 文
鲜亮,田小霞,马婧等.超细铂纳米催化剂的光化学合成及其催化还原硝基苯酚的应用[J].中山大学学报(自然科学版)(中英文),2024,63(03):137-146.
XIAN Liang,TIAN Xiaoxia,MA Jing,et al.Photochemical synthesis of ultrafine platinum nanocatalysts and their application in the catalytic reduction of nitrophenols[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(03):137-146.
鲜亮,田小霞,马婧等.超细铂纳米催化剂的光化学合成及其催化还原硝基苯酚的应用[J].中山大学学报(自然科学版)(中英文),2024,63(03):137-146. DOI： 10.13471/j.cnki.acta.snus.ZR20230041.
XIAN Liang,TIAN Xiaoxia,MA Jing,et al.Photochemical synthesis of ultrafine platinum nanocatalysts and their application in the catalytic reduction of nitrophenols[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(03):137-146. DOI： 10.13471/j.cnki.acta.snus.ZR20230041.
摘要
以乙二醇（EG）为还原剂，通过波长为395 nm近紫外光和450、650 nm的可见光照射C
60
及K
2
［PtCl
4
］混合液，制备了超细铂纳米颗粒（Pt/C
60
-E）。利用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、X射线光电子能谱（XPS）以及高分辨率透射电子显微镜（HR-TEM）等表征手段对Pt/C
60
催化剂的组成及形貌进行了研究，结果表明，铂纳米颗粒在C
60
表面分散良好，平均粒径约为2.6 nm。在催化
p
-NP还原实验中，在近紫外光（395 nm）照射下所制备催化剂（Pt/C
60-
E3）表现出最高的催化活性
，其速率常数
k=
0.12 min
－1
。在催化剂循环实验中，多次循环催化剂仍具有较高的活性，实验证明光化学法对前驱体铂催化剂制备起到良好的作用。
Abstract
This study focuses on synthesizing ultrafine platinum nanoparticles (Pt/C
60
-E) by irradiating a mixture of C
60
and K
2
[PtCl
4
]
with ethylene glycol (EG) as the reducing agent. The process utilizes near-ultraviolet (UV) light at a wavelength of 395 nm
along with visible light at 450 and 650 nm. The composition and morphology of the Pt/C
60
catalyst were investigated using characterization techniques including X-ray diffraction (XRD)
Fourier transform infrared spectroscopy (FT-IR)
X-ray photoelectron spectroscopy (XPS)
and high-resolution transmission electron microscopy (HR-TEM). The results revealed a well-dispersed distribution of Pt nanoparticles on the C
60
surface
with an average particle size of about 2.6 nm. In the catalytic reduction experiments of
p
-NP
the Pt/C
60
-E3 catalyst
prepared under near-ultraviolet irradiation (395 nm)
exhibited superior catalytic activity
with a rate constant (
k
) of 0.12 min
-1
. Furthermore
in the catalyst cycling experiments
the catalysts remained highly active even after multiple cycles
demonstrating the effectiveness of the photochemical method in synthesizing precursor Pt catalysts.
关键词
超细铂纳米颗粒富勒烯光化学法降解p-硝基苯酚
Keywords
platinum ultrafine nanoparticlesfullerenephotochemical methoddegradation of p-nitrophenol
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