CD Skripsi

Pengaruh Penambahan Co-Doping (S-Se) Terhadap Sifat Fisis Dan Aktivitas Fotokatalis Zno Hasil Biosintesis Menggunakan Ekstrak Daun Matoa

---

Zinc oxide (ZnO) semiconductor is a material with a band gap energy of 3.37 eV that can be used as a photocatalyst to degrade pollutants in water. The weakness of this material is the relatively wide band gap energy, which limits the light response to photocatalytic activity. Efforts to increase its photocatalytic efficiency are carried out by adding impurities to ZnO. Single element doping has been used to modify the material's physical properties, but this method has some drawbacks. Alternatively, doping with two elements can increase the photocatalytic activity. This study aims to analyze the effect of adding a sulfur dopant to 4%Se-doped ZnO (4%Se-ZnO) material on the physical properties and photocatalytic activity. Nanoparticles (S,Se) co-doped ZnO (S-Se-ZnO) were synthesized using matoa leaf extract as a bioreductant with microwave irradiation as a heating source. Optical properties, crystal structure, morphology, and elemental composition were characterized using UV-Vis spectroscopy, XRD, and FESEM-EDX. UV-Vis spectroscopy showed a redshift in the absorbance spectrum and changes in band gap energy after the addition of sulfur codopant. XRD results showed a hexagonal wurtzite crystal structure, indicating that the addition of sulfur codopant did not change the crystal structure of S-Se-ZnO. FESEM images showed morphological changes in Se-ZnO and S-Se-ZnO nanoparticles with nanoflower shapes with the most uniform particle size distribution in the sample (1%S-4%Se-ZnO). EDX confirmed sulfur elements, but selenium was not detected in the co-doped sample. The photocatalytic activity of doped and co-doped nanoparticles showed good performance in degrading 4-NP pollutants, with a degradation percentage of more than 90% of all samples. This degradation percentage indicates the potential of co-doped S-Se-ZnO nanoparticles as an environmentally friendly photocatalyst for degrading wastewater pollutants.
Keywords : bioshyntesis, S-Se-ZnO, Se-ZnO, photocatalyst, 4-NP.
 

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2003113435

Penerbit

Pekanbaru : Universitas Riau FMIPA Fisika., 2024

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2003113435

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar