Grafen Oksit/Altın/Polianilin Nanokompozitlerinin Eş Zamanlı Çöktürme/Polimerizasyon Yöntemleriyle Sentezi ve Fototermal Performansı

Bu çalışmada, grafen oksit (GO) üzerinde tek basamakta altın tuzunun (HAuCl4) indirgenmesi ve anilin monomerinin polimerize edilmesiyle GO/Au/Polianilin (PANI) nanokompozitleri faklı bileşimlerde sentezlenmiş, karakterize edilmiş ve 808 nm dalgaboyuna sahip bir lazer ile fototermal özellikleri incelenmiştir. 1.5 W/cm2 lazer güç yoğunluğunda 0.1 mg/mL derişime sahip nanokompozit dispersiyonları arasında 10 dakikalık ısıtma işlemi sonucunda ulaşılan en yüksek sıcaklık GO1-Au-PANI4 nanokompozitinde 62.6 °C, en yüksek fototermal dönüşüm verimi ise 0.384 olmuştur. Bu nanokompozit üzerinde tekrarlı ısıtma soğutma deneyleri gerçekleştirilmiş ve ulaşılan en yüksek sıcaklıkta kayda değer bir değişiklik gözlenmemiştir. GO/Au/PANI nanokompozitinin tek basamaklı kolay sentez yöntemi ve yüksek fototermal performansı ile umut verici bir fotoajan olduğu tespit edilmiştir.

Anahtar Kelimeler:

Grafen oksit, Altın nanoparçacıkları, Polianilin, Fototermal

Synthesis and Photothermal Performance of Graphene Oxide/Gold/Polyaniline Nanocomposites via Simultaneous Precipitation/Polymerization Methods

In this study, GO/Au/Polyaniline (PANI) nanocomposites were synthesized by a single step via reduction of gold salt (HAuCl4) on graphene oxide (GO) and polymerization of aniline monomer. Nanocomposites prepared with different compositions were characterized and their photothermal properties were investigated using a laser having a wavelength of 808 nm. Among the nanocomposite dispersions with 0.1 mg/mL concentration, the highest temperature achieved with 10 minutes of heating at a laser power density of 1.5 W/cm2 was 62.6 °C, and the highest photothermal conversion efficiency was 0.384 in GO1-Au-PANI4 nanocomposite. Repeated heating and cooling experiments were carried out on this nanocomposite and no significant change was observed on the maximum temperature. GO/Au/PANI nanocomposite is found to be a promising photoagent with its easy one-step synthesis method and high photothermal performance.

Keywords:

Graphene oxide, Gold nanoparticles, Polyaniline, Photothermal,

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