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STRUCTURAL AND ELECTROCHEMICAL PROPERTIES OF CHITOSAN/GQDS/ZIF-67 COMPOSITES

Lantanida Journal · Vol. 14 No. 2 (2026) · hlm. 166–183

DOI
10.22373/lj.v14i2.35174
ISSN
2548-9062, 2356-3133
Terbit
2026-07-31
Penerbit
UIN AR-RANIRY
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-sa/4.0

Abstrak

Inggris

The development of materials based on Zeolitic Imidazolate Framework-67 (ZIF-67) has attracted attention in the field of electrochemical sensors due to their large surface area, good porosity, and the presence of Co²⁺ active sites, which play a role in enhancing electrochemical activity and electron transfer at the sensor surface. To improve the stability and conductivity of these materials, ZIF-67 is combined with biopolymers and carbon nanomaterials to form functional composites with optimized sensor performance. In this study, chitosan/graphene quantum dots/ZIF-67 (CS/GQDs/ZIF-67) composites were successfully synthesized via stirring and ultrasonication-assisted mixing. Variations in ZIF-67 concentration were tested at 500, 1000, 1500, 2000, and 2500 mg/L to determine the optimal composition for electrochemical response. At the same time, electrochemical properties were analyzed by cyclic voltammetry (CV). XRD analysis revealed the formation of a crystalline structure in the CS/GQDs/ZIF-67 composite. Interactions among the components in the composite were confirmed through FTIR analysis. Meanwhile, FE-SEM results showed that the surface morphology had become more homogeneous, and EDX analysis confirmed the presence of Co, C, O, and N in the composite structure. CV testing showed that increasing the scan rate increased the anodic peak current, with the optimum scan rate at 125 mV/s. In addition, the optimal ZIF-67 concentration was 1500 mg/L, yielding the highest anodic peak current of 1.0466 x 10-4 A, indicating enhanced electrochemical activity and electron transfer. Overall, the CS/GQDs/ZIF-67 composite shows good potential as an electrode modification material for the development of cyclic voltammetry-based electrochemical sensors.

Bahasa Indonesia

The development of materials based on Zeolitic Imidazolate Framework-67 (ZIF-67) has attracted attention in the field of electrochemical sensors due to their large surface area, good porosity, and the presence of Co²⁺ active sites, which play a role in enhancing electrochemical activity and electron transfer at the sensor surface. To improve the stability and conductivity of these materials, ZIF-67 is combined with biopolymers and carbon nanomaterials to form functional composites with optimized sensor performance. In this study, chitosan/graphene quantum dots/ZIF-67 (CS/GQDs/ZIF-67) composites were successfully synthesized via stirring and ultrasonication-assisted mixing. Variations in ZIF-67 concentration were tested at 500, 1000, 1500, 2000, and 2500 mg/L to determine the optimal composition for electrochemical response. At the same time, electrochemical properties were analyzed by cyclic voltammetry (CV). XRD analysis revealed the formation of a crystalline structure in the CS/GQDs/ZIF-67 composite. Interactions among the components in the composite were confirmed through FTIR analysis. Meanwhile, FE-SEM results showed that the surface morphology had become more homogeneous, and EDX analysis confirmed the presence of Co, C, O, and N in the composite structure. CV testing showed that increasing the scan rate increased the anodic peak current, with the optimum scan rate at 125 mV/s. In addition, the optimal ZIF-67 concentration was 1500 mg/L, yielding the highest anodic peak current of 1.0466 x 10-4 A, indicating enhanced electrochemical activity and electron transfer. Overall, the CS/GQDs/ZIF-67 composite shows good potential as an electrode modification material for the development of cyclic voltammetry-based electrochemical sensors.

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  • Universitas Sumatera Utara
  • State University of Medan
  • University of Technology Malaysia
  • University of Palangka Raya
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Rekan penulisOrganisasiArtikel bersama
Ahmed M.S. EljaliUniversity of Technology Malaysia1
Shahrir HashimUniversity of Technology Malaysia1
Tulus Ikhsan NasutionUniversitas Sumatera Utara1
Ahmad Nasir PulunganState University of Medan1
Saharman GeaUniversitas Sumatera Utara1
Agus HaryonoUniversity of Palangka Raya1
Junifa Layla SihombingState University of Medan1
Tiamina NasutionState University of Medan1
Rahayu RahayuState University of Medan1
Yasir Arafat HutapeaUniversitas Sumatera Utara1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) https://jurnal.ar-raniry.ac.id/index.php/lantanida/oai, pertama di-harvest 7 Nov 2026, terakhir terlihat 7 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en">STRUCTURAL AND ELECTROCHEMICAL PROPERTIES OF CHITOSAN/GQDS/ZIF-67 COMPOSITES</dc:title>
	<dc:title xml:lang="id">STRUCTURAL AND ELECTROCHEMICAL PROPERTIES OF CHITOSAN/GQDS/ZIF-67 COMPOSITES</dc:title>
	<dc:creator xml:lang="en">Sonia, Nessa Gina</dc:creator>
	<dc:creator xml:lang="en">Nainggolan, Irwana</dc:creator>
	<dc:creator xml:lang="en">Andriayani, Andriayani</dc:creator>
	<dc:creator xml:lang="id">Sonia, Nessa Gina</dc:creator>
	<dc:creator xml:lang="id">Nainggolan, Irwana </dc:creator>
	<dc:creator xml:lang="id">Andriayani, Andriayani</dc:creator>
	<dc:subject xml:lang="en">chitosan</dc:subject>
	<dc:subject xml:lang="en">electrochemical sensor</dc:subject>
	<dc:subject xml:lang="en">graphene quantum dots</dc:subject>
	<dc:subject xml:lang="en">zeolitic</dc:subject>
	<dc:subject xml:lang="en">imidazolate framework-67</dc:subject>
	<dc:subject xml:lang="id">Kitosan, Sensor elektrokimia, Titik Kuantum Grafen, Kerangka Imidazolat Zeolitik-67</dc:subject>
	<dc:description xml:lang="en">The development of materials based on Zeolitic Imidazolate Framework-67 (ZIF-67) has attracted attention in the field of electrochemical sensors due to their large surface area, good porosity, and the presence of Co²⁺ active sites, which play a role in enhancing electrochemical activity and electron transfer at the sensor surface. To improve the stability and conductivity of these materials, ZIF-67 is combined with biopolymers and carbon nanomaterials to form functional composites with optimized sensor performance. In this study, chitosan/graphene quantum dots/ZIF-67 (CS/GQDs/ZIF-67) composites were successfully synthesized via stirring and ultrasonication-assisted mixing. Variations in ZIF-67 concentration were tested at 500, 1000, 1500, 2000, and 2500 mg/L to determine the optimal composition for electrochemical response. At the same time, electrochemical properties were analyzed by cyclic voltammetry (CV). XRD analysis revealed the formation of a crystalline structure in the CS/GQDs/ZIF-67 composite. Interactions among the components in the composite were confirmed through FTIR analysis. Meanwhile, FE-SEM results showed that the surface morphology had become more homogeneous, and EDX analysis confirmed the presence of Co, C, O, and N in the composite structure. CV testing showed that increasing the scan rate increased the anodic peak current, with the optimum scan rate at 125 mV/s. In addition, the optimal ZIF-67 concentration was 1500 mg/L, yielding the highest anodic peak current of 1.0466 x 10-4 A, indicating enhanced electrochemical activity and electron transfer. Overall, the CS/GQDs/ZIF-67 composite shows good potential as an electrode modification material for the development of cyclic voltammetry-based electrochemical sensors.</dc:description>
	<dc:description xml:lang="id">The development of materials based on Zeolitic Imidazolate Framework-67 (ZIF-67) has attracted attention in the field of electrochemical sensors due to their large surface area, good porosity, and the presence of Co²⁺ active sites, which play a role in enhancing electrochemical activity and electron transfer at the sensor surface. To improve the stability and conductivity of these materials, ZIF-67 is combined with biopolymers and carbon nanomaterials to form functional composites with optimized sensor performance. In this study, chitosan/graphene quantum dots/ZIF-67 (CS/GQDs/ZIF-67) composites were successfully synthesized via stirring and ultrasonication-assisted mixing. Variations in ZIF-67 concentration were tested at 500, 1000, 1500, 2000, and 2500 mg/L to determine the optimal composition for electrochemical response. At the same time, electrochemical properties were analyzed by cyclic voltammetry (CV). XRD analysis revealed the formation of a crystalline structure in the CS/GQDs/ZIF-67 composite. Interactions among the components in the composite were confirmed through FTIR analysis. Meanwhile, FE-SEM results showed that the surface morphology had become more homogeneous, and EDX analysis confirmed the presence of Co, C, O, and N in the composite structure. CV testing showed that increasing the scan rate increased the anodic peak current, with the optimum scan rate at 125 mV/s. In addition, the optimal ZIF-67 concentration was 1500 mg/L, yielding the highest anodic peak current of 1.0466 x 10-4 A, indicating enhanced electrochemical activity and electron transfer. Overall, the CS/GQDs/ZIF-67 composite shows good potential as an electrode modification material for the development of cyclic voltammetry-based electrochemical sensors.</dc:description>
	<dc:publisher xml:lang="en">UIN AR-RANIRY</dc:publisher>
	<dc:date>2026-07-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
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	<dc:identifier>https://jurnal.ar-raniry.ac.id/index.php/lantanida/article/view/35174</dc:identifier>
	<dc:identifier>10.22373/lj.v14i2.35174</dc:identifier>
	<dc:source xml:lang="en">Lantanida Journal; Vol. 14 No. 2 (2026): July-December 2026; 166-183</dc:source>
	<dc:source xml:lang="id">Lantanida Journal; Vol 14 No 2 (2026): July-December 2026; 166-183</dc:source>
	<dc:source>2548-9062</dc:source>
	<dc:source>2356-3133</dc:source>
	<dc:source>10.22373/lj.v14i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jurnal.ar-raniry.ac.id/index.php/lantanida/article/view/35174/13246</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2026 Nessa Gina Sonia, Irwana Nainggolan, Andriayani Andriayani</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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