Synthesis of Pt3Ni Microspheres with High Performance for Rapid Degradation of Organic Dyes

Abstract

In this study, Pt3Ni microspheres consisted of nanoparticles were synthesized without addition of surfactants via the solvothermal route. The obtained sample was characterized by X-ray diffraction (XRD), inductively coupled plasma-atomic emission spectrometer (ICP-AES), X-ray photoelectron spectroscopy (XPS), and field-emission scanning electron microscopy (FESEM). Furthermore, the catalytic performance of as-synthesized Pt3Ni microspheres was evaluated on the degradation of different organic dyes (methylene blue, methyl orange, Congo red, and rhodamine B). The results show that different dyes were rapidly decomposed by Pt3Ni microspheres in different pathways. Among different dyes, the formation and further degradation of the intermediates was observed during the degradation of methylene blue and methyl orange, suggesting the indirect degradation process of these dyes. This study provides not only a promising catalyst for the removal of organic contaminants for environment remediation, but also new insights for Pt3Ni alloy as a high-performance catalyst in organic synthesis.

Silk Bionanocomposites for Organic Dye Absorption and Degradation

“…In particular, the use of nanoparticles (NPs), which exhibit a high surface-to-volume ratio, has been widely explored to this end as lower amounts of catalyst are required. A variety of NPs have been used for dye degradation including silver, platinum, iron, palladium and gold [29][30][31][32][33][34]. Although palladium NPs are probably the most well-know nanocatalyst, their expensiveness and toxicity reduces their interest in depollution applications.…”

Preparation of carbon nanofibrous mats encapsulating zero-valent Fe nanoparticles as Fe reservoir for removal of organic pollutants

“…They are transformed into toxic and carcinogenic substances that can cause serious diseases and even induce cancer, which seriously endangers human life. [3][4][5] Considering the harm of azo dyes, various methods, including chemical degradation, [6][7][8] biodegradation, 9,10 chemical oxidation, 11 and physical adsorption, 12,13 are being used to remove and degrade azo dyes in water. In the traditional Fenton reaction, Fe 2+ or Fe 3+ reacts with H 2 O 2 to produce cOH, which destroys azo dyes by utilizing its strong oxidation ability.…”