Xiaoxia Tian

Minzu University of China

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Wei Li

Beijing Institute of Technology

Liang Xian

State Ethnic Affairs Commission

Bei Xi

Minzu University of China

YanZhong Yang

Minzu University of China

Jing Ma

Nanjing University

Xu Gao

State Ethnic Affairs Commission

Jiuzhou Zhao

Minzu University of China

Liang Xian

Minzu University of China

Zhaomin Liu

Inner Mongolia Agricultural University

Shuxin Liu

Mianyang Normal University

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Minzu University of China

State Ethnic Affairs Commission

North China Electric Power University

Tianjin University

Guangxi Academy of Agricultural Science

Chinese Academy of Sciences

Dalian University

Beijing Institute of Technology

Wuhan University of Science and Technology

Changchun University of Science and Technology

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Photoinduced synthesis of ultrafine Pt nanoparticles loaded on the surface of MOFs-modified carbon materials for efficient catalytic reduction reactions

Bulletin of the Chemical Society of Japan (2025)

Liang Xian Xiaoxia Tian Zhaomin Liu Shuxin Liu Jiuzhou Zhao

Abstract In this paper, ultrafine platinum nanoparticles (Pt/Co-N-C) were prepared by irradiating the mixture of Co-N-C and K2[PtCl4] with near-ultraviolet (UV) light at a wavelength of 395 nm and visible light at 450 and 550 nm without adding any reducing and stabilizing agents using MOFs-modified carbon materials (Co-N-C) as the carrier. The composition and morphology of the Pt/Co-N-C catalysts were investigated using characterization tools such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HR-TEM), etc. The results showed that the Pt nanoparticles were well dispersed on the surface of the Co-N-C, with average particle sizes of about 2.39, 2.86, and 3.53 nm, respectively. In the catalytic 4-NP reduction experiments, the catalyst (Pt/Co-N-C-1) prepared under near-ultraviolet light (395 nm) irradiation showed the highest catalytic activity with a rate constant k=0.64 min-1. After five cycles, the conversion rate was still maintained at about 90%, which was highly reusable. It was demonstrated that 395 nm near-ultraviolet light was more favorable for the modulation of the distribution of the species during the hydrolysis and reduction of platinum in this reaction to form smaller-sized platinum nanocrystals, which was conducive to the catalyst to exhibit higher activity.

Carbon fibers

Surface Modification

10.1093/bulcsj/uoaf009

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Preparation of supported ultrafine platinum nanocatalysts by ethylene glycol assisted photochemical method and application of catalytic 4-NP

Fullerenes Nanotubes and Carbon Nanostructures (2023)

Wei Li Bei Xi Jing Ma Xiaoxia Tian Xu Gao

Ultrafine Pt nanoparticles (Pt/SWCNTs) supported on single-walled carbon nanotubes (SWCNTs) were prepared by a photochemical method assisted by ethylene glycol (EG) as a reducing agent without the addition of stabilizing agents. the application in the reduction of 4-Nitrophenol (4-NP) was also explored. XRD diffraction patterns show that the content of Pt (111) crystal planes is higher, which is beneficial for improving the catalytic activity of platinum nanoparticles. TEM results showed that Pt/SWCNTs-E3 prepared under Ultra Violet (UV) light irradiation had a small-size particle with an average particle size of about 2.2 nm. XPS results showed that the prepared Pt nanoparticles mainly existed in the form of Pt0. The catalytic performance test results showed that the Pt/SWCNTs prepared under the UV condition of 395 nm had the highest activity for catalyzing the reduction of 4-NP, and the apparent rate constant was k = 0.34 min−1, indicating that it had good catalytic activity. After seven cycles, the conversion rate remains about 83%, which has good reusability and stability. The results show that the aggregation of Pt intermediates can be effectively controlled by photo-induced and strong metal − support interaction (SMSI) to obtain ultrafine nanoparticles dominated by Pt0.

Nanomaterial-based catalyst

Platinum nanoparticles

10.1080/1536383x.2023.2193398

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Synthesis of Ultrafine Platinum Nanocatalysts by Ice‐photochemical Method and Their Application in Catalytic Degradation of 4‐nitrophenol

ChemistrySelect (2022)

Liang Xian Jing Ma Wei Li YanZhong Yang Xu Gao

Abstract Here, uniformly dispersed ultrafine platinum nanocatalysts (Pt/C 60 ) were synthesized on C 60 by ice‐photochemical method using potassium chloroplatinate (K 2 [PtCl 4 ]) as platinum source under the condition of low temperature, no stabilizer and reducing agent. X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS) and Transmission electron microscopy (TEM) were used to study the composition and morphology of Pt/C 60 catalyst. It was confirmed that Pt Ultra‐small Particles (Pt UPs) was loaded on C 60 surface with high dispersion. The average particle sizes of the three samples obtained under different reaction conditions were 1.41±0.1 nm, 1.54±0.4 nm and 1.73±0.3 nm, respectively. The results show that the light‐induced effect and the ice lattice domain limiting effect in the frozen state effectively control the formation and growth of platinum clusters in the process of Pt 2+ reduction to Pt 0 . The rate constants of the three samples were 0.89 min −1 , 0.31 min −1 , 0.19 min −1 , respectively, showing high catalytic activity in the study of the catalytic performance of Pt/C 60 degradation of 4‐nitrophenol (4‐NP) by Ultraviolet‐visible spectroscopy (UV‐Vis). This method provides a meaningful attempt for the study of green chemical synthesis method of platinum metal catalysts.

Nanomaterial-based catalyst

Platinum nanoparticles

10.1002/slct.202204071

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