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All Journal Chemistry Indonesian Journal of Chemical Research Halal Studies and Society
Julita, Mardiana
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Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Engineering Environmental Science Social Sciences

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Determination of Band Gap Energy of ZnO/Au Nanoparticles Resulting in Laser Ablation in Liquid Julita, Mardiana; Shiddiq, Muhandis; Khair, Miftahul
Indonesian Journal of Chemical Research Vol 10 No 2 (2022): Edition for September 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.10-mar

Abstract

The synthesis of ZnO and ZnO/Au nanoparticles using the laser ablation method in liquid has been successfully carried out. Characterizing the optical properties of ZnO and ZnO/Au using a UV-Vis Spectrophotometer (Ocean Optic MAYA Pro 2000) measured in the wavelength range of 275-875 nm. The characterization results obtained are absorbance and band gap values of ZnO and ZnO/Au nanoparticles. This study found the absorbance values of ZnO nanoparticles at wavelengths 330 and 335 nm. After obtaining the absorbance value, the band gap value was analyzed for ZnO and ZnO/Au nanoparticles, respectively, 3.23 eV and 3.17 eV. The decrease in the band gap value in ZnO is due to the presence of Au in ZnO nanoparticles which can replace one of the lattices in the ZnO crystal structure.
Advancing halal agri-food sector: Using technology and innovation for sustainable growth and new opportunities Femdika, Donci Valentitah; Julita, Mardiana; Amara, Satya; Maisarah, Nur Ilya; Sembiring, Indra Refipal
Halal Studies and Society Vol. 2 No. 2 (2025): May 2025
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/hass.2.2.7-10

Abstract

Halal agri food sector is influenced by rapid transformation driven by growing global demand, increased consumer awareness of health and ethical considerations, as well as advances in technology. Therefore, this research aimed to discuss the importance of maintaining halal integrity in food production, processing, and distribution, particularly in the era of Industry 4.0. Key drivers of innovation were explored, including the expanding Muslim population, evolving consumer preferences, and increasing sustainability concerns. The impact of technology such as blockchain, Internet of Things (IoT), and Artificial Intelligence (AI) on enhancing traceability and transparency in halal supply chain was reported. Strategies for future development comprised raising public awareness, integrating halal assurance systems with advanced technology, and strengthening collaboration among governments, industry stakeholders, and certification bodies. Significant challenges were also addressed, including fragmented global halal standards, complex certification processes, and high implementation costs. Halal agri-food sector can achieve sustainable growth and remain competitive in the global market by accepting technological innovation and enhancing cooperation among stakeholders.
Co-Authors Amara, Satya Femdika, Donci Valentitah Indra Refipal Sembiring Maisarah, Nur Ilya Miftahul Khair Shiddiq, Muhandis