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Synthesis of ZnO/CuO Composite by The Electrochemical Method in The Acetat Acid Solution Adrian Nur; Jundi Rofi’uddien; Muhammad Abdul Basir; Nazriati Nazriati; Fauziatul Fajaroh
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40436

The metal oxide composite is used to the microelectronic circuit, piezoelectric, fuel cell, sensor, catalyst, coating for preventing corrosion, and solar cell. The ZnO/CuO is one of the metal oxide composites. The combination of ZnO and CuO is the potential composite used to the catalyst and the anti-bacterial agent. The method used in this research was the electrochemical method in the acetate acid solution. The acetate acid solution used in this research is cheaper than the succinite acid used in the previous research. The electrochemical method has advantages due the easy to control and cheap. The composite resulted was analyzed by the XRD and the FTIR. The aims of this analysis are to know the crystallite phase, structure, and the functional groups of the particle resulted. The analysis showed that the ZnO-CuO composite can be resulted by the electrochemical method.

Gerakan Bersih-bersih Pantai Balekambang dari Sampah Plastik Nazriati Nazriati; Yudhi Utomo; Fauziatul Fajaroh; Suharti Suharti; Danar Danar; Endang Ciptawati
Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Vol 5, No 2 (2020): July 2020
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/abdimas.v5i2.3573

The beach is an attractive place to unwind from your daily routine. The beauty of the beach must always be maintained so that comfort can still be obtained for everyone who visits it. The beach becomes a comfortable place if cleanliness is maintained. Plastic waste, if any along the coast, can be carried by the waves into the ocean. Plastic waste brought to sea can be consumed by marine biota because marine biota cannot distinguish between plastic and food waste. This community service activity intends to inspire visitors (tourists), managers and traders at Balekambang beach to care about the environment. A well-preserved environment will be a legacy that will be left on the next generation. The survey results show that visitors understand the meaning of waste and are willing to dispose of waste in its place. DOI: https://doi.org/10.26905/abdimas.v5i2.3573

Pemanfaatan Limbah Kulit Pisang Raja Nangka sebagai Capping Agent Sintesis Partikel ZnO: Variasi Pelarut Ekstraksi Nuril Mega Musfita; Fauziatul Fajaroh; Adilah Aliyatulmuna; Endang Ciptawati; Yahmin Yahmin; Nazriati Nazriati
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 19 No. 2 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v19i2.9135

Kemunculan bakteri resisten antibiotik menjadi masalah serius di seluruh dunia. Upaya penanggulangan bakteri resisten antibiotik terus dilakukan, salah satunya dengan penggunaan material berukuran nano. Zink oksida (ZnO) merupakan salah satu partikel yang telah terbukti dapat menghambat pertumbuhan bakteri gram negatif dan gram positif. Dalam mencegah terjadinya aglomerasi pada sintesis ZnO berukuran nanometer dapat ditambahkan capping agent alami berupa senyawa metabolit sekunder pada ekstrak kulit pisang raja nangka. Adapun langkah yang dilakukan adalah: 1) ekstraksi metabolit sekunder kulit pisang raja nangka, 2) uji fitokimia, 3) penentuan kadar total flavonoid dan polifenol, 4) sintesis ZnO dengan capping agent alami ekstrak kulit pisang raja nangka, 5) karakterisasi ZnO, dan 6) uji aktivitas antibakteri ZnO. Hasil analisis kualitatif melalui uji fitokimia serta analisis kuantitatif melalui penentuan kadar total polifenol dan flavonoid menunjukkan bahwa ekstrak kulit pisang raja nangka etanol (96%)-air 2:1 (v/v) memiliki kadar metabolit sekunder yang lebih tinggi dibandingkan ekstrak kulit pisang raja nangka etanol (96%)-air 1:1 (v/v). Partikel ZnO berhasil disintesis menggunakan capping agent alami ekstrak kulit pisang raja nangka. Kadar metabolit sekunder yang berbeda pada masing-masing ekstrak mempengaruhi ukuran, morfologi, dan aktivitas antibakteri ZnO hasil sintesis.

Biosintesis dan karakterisasi nanopartikel tembaga oksida (CuO) menggunakan ekstrak rimpang kencur (Kaempferia galanga L.) Efrilia R Rahmawati; Nazriati Nazriati
Jurnal Teknik Kimia Vol 28 No 3 (2022): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v28i3.1232

Penggunaan nanopartikel telah berkembang pesat dalam berbagai bidang menyebabkan kebutuhan nanopartikel meningkat. Nanopartikel menjadi material yang banyak diminati karena memiliki banyak keunggulan jika dibandingkan dengan material jenis lain seperti raw material dan material yang berukuran lebih besar dari nanopartikel. Salah satu nanopartikel yang dikembangkan adalah nanopartikel CuO. Nanopartikel CuO umumnya disintesis dengan metode kimia dan fisika. Metode kimia dan fisika memberikan dampak negatif bagi lingkungan. Alternatif metode yang dapat digunakan adalah biosintesis. Penelitian ini bertujuan untuk melakukan biosintesis nanopartikel CuO menggunakan ekstrak rimpang kencur (Kaempferia galanga L.). Ekstrak rimpang kencur (Kaempferia galanga L.) berperan sebagai agen capping dan penstabil dalam pembentukan nanopartikel CuO. Biosintesis nanopartikel CuO berhasil dilakukan dengan ditunjukkannya puncak-puncak pada difraktogram XRD pada sudut 2θ: 32,5°; 35,5°; 38,77°; 46,3°; 48,77°; 53,48°; 58,28°; 61,55°; 66,28°; 66,28°; 68,04°; 72,44°; 75,08°; dan 82,77° dan diperoleh pita serapan FTIR pada bilangan gelombang 594 dan 469 cm-1. Hasil Penelitian menunjukkan nanopartikel CuO memiliki ukuran partikel pada pH 10, 11, dan 12 secara berturut-turut sebesar 24,04; 23,84; dan 22,68 nm dengan morfologi berbentuk lempengan serta nilai energi celah pita nanopartikel CuO yang diperoleh sebesar 5,25 eV.

SINTESIS ZnO/SILIKA XEROGEL DAN APLIKASINYA Nazriati Nazriati; Siti Shohibul Wahidah
Jurnal Inovasi Teknik Kimia Vol 8, No 4 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i4.9057

Abstrak Sintesis ZnO/silika xerogel dengan rasio massa yang berbeda dan aplikasinya untuk menurunkan kadar zat warna metilen biru. Metode yang digunakan untuk menurunkan kadar zat warna metilen biru adalah fotokatalis. Tahapan penelitian ini meliputi sintesis silika xerogel dengan metode sol-gel, sintesis ZnO/silika xerogel dengan metode lelehan garam, dan aplikasi ZnO/silika xerogel untuk menurunkan kadar zat warna metilen biru. Hasil analisis FT-IR menunjukkan adanya gugus fungsi silanol (Si-OH), siloksan (Si-O-Si) dan vibrasi Zn-O. Fakta ini didukung dengan hasil analisis XRD yang menunjukkan pola standar ZnO (JCPDS No. 36-1451) dan mengindikasikan adanya ZnO terdispersi di dalam matriks silika xerogel. Hasil uji SEM menunjukkan morfologi partikel yang terbentuk berupa batang (road) dan jarum (needle) dengan ukuran diameter partikel rata-rata sebesar 53,35 nm. Persentase penurunan kadar zat warna metilen biru dengan perbandingan komposisi 1:1 dan 1:2 yaitu sebesar 68,68% dan 69,12%.

The Effect of Student Worksheet-Assisted Project-Based Learning on Learning Outcomes and Critical Thinking in Moderation of Student Learning Motivation in Electrolytic Cell Putra, Vahemas Aditya pamila; Dasna, I Wayan; Nazriati, Nazriati
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i22023p122-132

This study aims to discover the differences between learning outcomes and critical thinking skills between students who follow project-based Learning and conventional Learning. Second, to know the impact of project-based learning on student worksheets on learning outcomes and critical thinking in moderation of student learning motivation. The method used in the initiation is a quasi-experiment with a pretest-posttest control group design. The results show that (1) there are differences in learning outcomes between students who follow project-based learning and students who follow conventional learning; (2) there is a difference in critical thinking capabilities among students who go with project-based learning and conventional students; (3) motivation to moderate project-based learning to help students worksheets to improve student's learning outcomes; (4) motivation not to moderately project-driven Learning to help students' worksheets on critical think ability.

Biosintesis dan Karakterisasi Nanopartikel Seng Oksida (ZnO-NPs) Menggunakan Ekstrak Daun Kenitu (Chrysophyllum cainito L.) Syamsul Arifin, Fawaid; Nazriati
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9127

Nanoparticles are materials that have superior properties compared to similar materials that are larger in size when used as raw materials. One of the nanoparticles that is trending and has many applications is zinc oxide nanoparticles (ZnO-NPs). This study aimed to synthesize ZnO-NPs using kenitu leaf extract (Chrysophyllum cainito L.) and determine the effect of extract composition and pH on the size of ZnO-NPs. Kenitu leaf extract can prevent agglomeration in the synthesis of nanoparticles because it contains secondary metabolites such as antioxidants and polyphenols. ZnO-NPs were synthesized using green method by reacting kenitu leaf extract with zinc sulfate. The success of the synthesis was indicated by the similarity of the peaks of the synthesized compounds to the standard peaks of ZnO in X-Ray Diffraction (XRD) analysis and supported by the presence of Zn-O vibrations in the 405-768 cm-1 region in Fourier Transform Infra-Red (FTIR) analysis. Analysis of UV-Vis spectra showed that ZnO-NPs were relatively stable at wavelength of 308-330 nm with an absorption peak at 317 nm and a bandgap energy of 3.25 eV. The results of FTIR characterization showed the presence of vibrations of the carbonyl and hydroxy groups in kenitu leaf extract. The results of the Scanning Electron Microscope (SEM) Â characterization showed that the ZnO-NPs synthesized using 10 mL kenitu leaf extract at pH 7 with 0.15 M zinc sulfate had predominantly spherical shape with a size of 14.10 nm. Based on experiment result addition of kenitu leaf extract may reduce the size of ZnO-NPs, while increase of mixture pH during formation reaction of ZnO-NPs may increase the size of ZnO-NPs.

Biosintesis dan Karakterisasi Nanopartikel Seng Oksida (ZnO-NPs) Menggunakan Ekstrak Daun Kenitu (Chrysophyllum cainito L.) Syamsul Arifin, Fawaid; Nazriati
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9127

Nanoparticles are materials that have superior properties compared to similar materials that are larger in size when used as raw materials. One of the nanoparticles that is trending and has many applications is zinc oxide nanoparticles (ZnO-NPs). This study aimed to synthesize ZnO-NPs using kenitu leaf extract (Chrysophyllum cainito L.) and determine the effect of extract composition and pH on the size of ZnO-NPs. Kenitu leaf extract can prevent agglomeration in the synthesis of nanoparticles because it contains secondary metabolites such as antioxidants and polyphenols. ZnO-NPs were synthesized using green method by reacting kenitu leaf extract with zinc sulfate. The success of the synthesis was indicated by the similarity of the peaks of the synthesized compounds to the standard peaks of ZnO in X-Ray Diffraction (XRD) analysis and supported by the presence of Zn-O vibrations in the 405-768 cm-1 region in Fourier Transform Infra-Red (FTIR) analysis. Analysis of UV-Vis spectra showed that ZnO-NPs were relatively stable at wavelength of 308-330 nm with an absorption peak at 317 nm and a bandgap energy of 3.25 eV. The results of FTIR characterization showed the presence of vibrations of the carbonyl and hydroxy groups in kenitu leaf extract. The results of the Scanning Electron Microscope (SEM) Â characterization showed that the ZnO-NPs synthesized using 10 mL kenitu leaf extract at pH 7 with 0.15 M zinc sulfate had predominantly spherical shape with a size of 14.10 nm. Based on experiment result addition of kenitu leaf extract may reduce the size of ZnO-NPs, while increase of mixture pH during formation reaction of ZnO-NPs may increase the size of ZnO-NPs.

Synthesis and Characterization of Hydroxyapatite Composites Based on Tutut (Belamya Javanica) and Magnetite by Coprecipitation as Adsorbents of Pb Metals Ion Charlena; Nazriati; Marita Soebrata, Betty; Dicky Iswara, Muhammad
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.111-122

Increased industrial activity can result in the emission of pollutants into the environment, such as heavy metals, which are a significant source of concern. A practical approach to reduce this problem is to utilize Pb metal adsorption. This study aims to synthesize HAp from Bellamya javanica clam shells and characterize the HAp-Fe3O4 composite as a Pb metal ion adsorbent. FTIR and XRD analysis results showed the successful fabrication of the composite, resulting in a crystal dimension of 7.63 nm and a crystallinity level of 84.80%. SEM characterization showed a porous structure with a particle size of 10.98 um. Adsorption studies of Pb(II) ions showed that the HAp-Fe3O4 composite efficiently adsorbed Pb(II) ions, with the adsorption efficiency increasing from 95.80% to 98.40%. The adsorption isothermal model of the HAp-Fe3O4 composite follows the Freundlich model with a 1/n value of 0.31 and a KF value of 25.35 L/g. The adsorption kinetics study of the HAp-Fe3O4 composite follows the pseudo second-order model with an R2 value of 1, and the thermodynamic study shows the Gibbs free energy is negative, which indicates that the adsorption process is thermodynamically optimal and spontaneous. In addition, the enthalpy value is positive, indicating that the interaction between the adsorbent and lead ions is endothermic, and the entropy is negative, indicating the reduction of random collisions of lead ions in the solid (adsorbent) and aqueous solution during adsorption.

Pengaruh Terapi Qur'anic Healing dengan Glasgow Coma Scale dan Vital Sign pada Pasien Penurunan Kesadaran di RSUD dr. Zainoel Abidin Fithriany; Sabrizal Ishak; Rima Novita Sari; Nasaie; Firly Ratsmita; Nazriati
Journal of Medical Science Vol 4 No 1 (2023): Journal of Medical Science
Publisher : LITBANG RSUDZA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55572/jms.v4i1.74

Qur’anic healing merupakan sebuah teknik terapi penyembuhan dengan cara membacakan ayat-ayat Al-Quran yang mu’tabaroh kepada pasien sesuai ketentuan Al-Quran dan As-Sunnah sebagaimana dicontohkan pada masa Rasulullah SAW.Penurunan kesadaran merupakan kondisi dimana otak mengalami defisiensi fungsi yang disebabkan oleh berbagai macam penyakit seperti stroke, diabetes melitus, trauma, sepsis dan lain-lain. Penelitian ini dilakukan diruang High Care Unit Medical RSUDZA dengan responden pasien yang mengalami penurunan kesadaran akibat sepsis. Penelitian ini bertujuan untuk mengetahui pengaruh terapi qur’anic healing dalam mempengaruhi outcome pasien dengan penurunan kesadaran akibat sepsis menggunakanGlasgow Coma Scale(GCS) dan Vital Sign. Metode penelitianQuasi Experimentaldengan two grup pre-post test design dan teknik pengambilan sampel consecutive sampling dengan subjek penelitian sesuai kriteria inklusi dan eklusi. Subjek penelitian sebanyak 24 responden dibagi dua kelompok perlakuan. Kelompok satu 12 reponden mendapatkan perlakuan terapi qur’anic healing dilakukan langsung oleh ustadz/ah, kelompok dua 12 reponden mendapatkan perlakuan terapi qur’anic healing dengan cara memperdengarkan audio. Hasil analisis uji-T yang membandingkan perubahan GCS dari dua metode perlakuan secara langsung atau memperdengarkan audio menunjukkan p-value= 0,001 (≤0,05). Dapat disimpulkan bahwa perbedaan GCS metode langsung dan audio adalah nyata. Sedangkan Uji mann whitney membandingkan perubahan vital sign dari dua metode perlakuan, menunjukkan ada pengaruh metode terhadap perubahan vital sign. Hasil uji mann whitneyberturut turut systole, diastole, nadi, respirasi, dan suhu=0.317, 0.317, 1.00, 1.00, 0.546 yang semuanya > dari 0.05 maka perbedaan vital sign metode langsung dan audio adalah tidak nyata. Walaupun tidak nyata ada kecenderungan vital sign dari metode langsung lebih baik dibandingkan metode audio di setiap aspek yang diamati kecuali di aspek nadi yang perubahan keduanya sama. Kesimpulan pada penelitian ini adalah terapi qur’anic healing berpengaruh terhadap kestabilan vital sign sertapeningkatan GCS pada pasien yang mengalami penurunan kesadaran.

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