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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Teknik ITS Jurnal Kimia dan Kemasan Indonesian Journal of Chemical Science ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Jurnal Kimia dan Kemasan Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Shofiyani, Anis
Department Of Chemistry Universitas Tanjungpura, Pontianak
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Engineering Environmental Science Materials Science & Nanotechnology Public Health Social Sciences

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Kitolod (Isotoma longiflora Presi) Leaf Extract as a Bioreductor in Silver Nanoparticle Synthesis Alifiani Maulida; Gusrizal Gusrizal; Anis Shofiyani
ALCHEMY Jurnal Penelitian Kimia Vol 22, No 1 (2026): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.22.1.109231.127-137

Abstract

Silver nanoparticles (AgNPs) were synthesized using kitolod (Isotoma longiflora Presi) leaf extract as a bioreductor. This research aims to investigate the ability of extracts to act as reducing agents in the formation of AgNPs and to characterize the resulting AgNPs. The synthesis was carried out under the following conditions: pH of extract 12, reaction time 90 minutes, silver nitrate concentration 2 × 10-4 M, and extract concentration 0.08%. Fourier transform infrared (FTIR) spectra confirmed the involvement of phytochemicals in the reduction of Ag+ to Ag0. The synthesized AgNPs were spherical, with an absorption peak at around 420 nm, an average particle size of 67.38 nm, a zeta potential of -23.6 mV, and a polydispersity index (PDI) of 0.697. Stability testing showed that the synthesized AgNPs remained stable for two months at room temperature.
Characteristics of Chlorella sp Biomass Immobilized on Chitosan (Chlo-Kit) for Adsorption of Chromium(III) Solution Titin Anita Zaharah; Anis Shofiyani; Endah Sayekti
ALCHEMY Jurnal Penelitian Kimia Vol 11, No 1 (2015): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.11.1.102.15-28

Abstract

Properties of biosorbent prepared from biomass of Chlorella sp immobilized on chitosan (Chlo-Kit) have been studied for adsorption of Chromium(III). Chlo-Kit adsorbent prepared by following steps: dissolving chitosan to get hydrogel form, immobilization of biomasson chitosan hydrogel, beads formation and crosslinkingthe adsorbent beads using epichlorohydrin reagent.Characterization using FT-IR spectrophotometry  and SEM showed that mechanism of biomass immobilization on chitosan involves electrostatic interactions between the functional groups of such both materials. Biomass immobilized on chitosan (Chlo-Kit) showed the higher stability in acid medium than un-immobilized biomass. Adsorption of Cr(III) metal ion on Chlo-Kit occured at optimum pH of 4-5 and followed well the Langmuir adsorption isotherm model. The adsorption capacity of Cr(III) on Chlo-Kit was 68.965 mg/g, about 91% higher than that on Chlorella biomass
Co-Authors Aderiya Munika Agus Wibowo Ajuk Sapar Alifiani Maulida Andi Hairil Alimuddin Andi Hairil Alimuddin Ari Widiyantoro Bernadeta Dwi Meilani Endah Sayekti Gusrizal Gusrizal Herlinda Djohan Irsandi Dwi Oka Kurniawan Lukman Atmaja Narsito Narsito Nelly Wahyuni Nelly Wahyuni nurhayati nurhayati Nurul - Widiastuti Pendi Wahyudi Randy Yusuf Kurniawan Risa Nofiani Risya Sasri Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sellen Tanheitafino Sri Juari Santosa Sri Noegrohati Tariz Zharfan ME Thamrin Usman Titik Lestari Titin Anita Zahara Titin Anita Zahara Titin Anita Zaharah Tria Susanti Warsi Kurnia Rahayu Yoga Pratama