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Bulletin of Chemical Reaction Engineering & Catalysis
Published by Masyarakat Katalis Indonesia - Indonesian Catalyst Society
ISSN : -     EISSN : 19782993     DOI : https://doi.org/10.9767/bcrec
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Bulletin of Chemical Reaction Engineering & Catalysis, a reputable international journal, provides a forum for publishing the novel technologies related to the catalyst, catalysis, chemical reactor, kinetics, and chemical reaction engineering. Scientific articles dealing with the following topics in chemical reaction engineering, catalysis science, and engineering, catalyst preparation method and characterization, novel innovation of chemical reactor, kinetic studies, etc. are particularly welcome. However, articles concerned on the general chemical engineering process are not covered and out of the scope of this journal. This journal encompasses Original Research Articles, Review Articles (only selected/invited authors), and Short Communications, including: fundamentals of catalyst and catalysis; materials and nano-materials for catalyst; chemistry of catalyst and catalysis; surface chemistry of catalyst; applied catalysis; applied bio-catalysis; applied chemical reaction engineering; catalyst regeneration; catalyst deactivation; photocatalyst and photocatalysis; electrocatalysis for fuel cell application; applied bio-reactor; membrane bioreactor; fundamentals of chemical reaction engineering; kinetics studies of chemical reaction engineering; chemical reactor design (not process parameter optimization); enzymatic catalytic reaction (not process parameter optimization); kinetic studies of enzymatic reaction (not process parameter optimization); the industrial practice of catalyst; the industrial practice of chemical reactor engineering; application of plasma technology in catalysis and chemical reactor; and advanced technology for chemical reactors design. However, articles concerned about the "General Chemical Engineering Process" are not covered and out of the scope of this journal.
Arjuna Subject : Teknik Kimia (semua kategori) - Katalisis
Articles 838 Documents
 77   78   79   80   81 
Enhancement of Charge Transfer in Quantum Dot–sensitized Solar Cell Photoanodes by Supporting rGO Layers Phuc, Dang Huu; Tung, Ha Thanh; Duy, Le Doan; Nhan, Le Minh
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20366

Abstract

In this study, we have studied and fabricated quantum dot sensitized solar cells based on photoanodes with the support of rGO buffer layer to enhance the electron transfer ability from TiO2 nano-semiconductor to FTO substrate. The rGO materials were fabricated by hydrothermal method, then they were coated on FTO substrate by Screen - Printing technique to create rGO nano films. The thickness of rGO films was studied from 1 to 3 layers to evaluate the mobility of charge, reduce recombination and resistance of film. Experimental results were determined by structural properties using XRD, FTIR, EDX and XPS, FESEM spectra; determined optical properties using UV-Vis absorption and transmission spectra; determined optical, electrical and chemical properties using Nyquist and EIS spectra. The maximum measured efficiency was 5.23% for the FTO/rGO(2)/TiO2/QDs film, current density 21.34 mA/cm2, open circuit voltage 5.525V and fill factor of 0.34. These results were also proven through the research results of optical properties, electrochemical properties. In addition, these results are also consistent with the studies of others. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Effect of Surface Stabilizers on the Optical Properties of ZnSe/ZnS:Mn/ZnS Nanocrystals Bui, Thi Diem; Nguyen, Quang Liem; Cuong, Nguyen Van; Nguyen, Trong Tang
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20454

Abstract

In this study, we produced nano-sized, spherical ZnSe/ZnS:Mn/ZnS in a non-toxic aqueous solvent with surface stabilizers such as 3-mercaptopropionic acid (MPA), polyethylene glycol (PEG), and starch. These surface stabilizers aid to prevent agglomeration and passivation, thereby stabilizing the nanoparticle surface. ZnSe/ZnS:Mn/ZnS nanocrystals (NCs) are cubic in structure. Changing the surface stabilizer and doping Mn metal does not alter the structure of the ZnSe base material, but it boosts fluorescence efficiency by 2.2 - 3.9 times. The fluorescence efficiency of ZnSe/ZnS:Mn/ZnS MPA NCs using MPA stabilizer is 73.95%, which is higher than the fluorescence efficiency of ZnSe/ZnS:Mn/ZnS Starch NCs (57.35%) using Starch stabilizer and higher than the fluorescence efficiency of ZnSe/ZnS:Mn/ZnS PEG NCs (41.72%) using PEG stabilizer. ZnSe/ZnS:Mn/ZnS MPA NCs are originally assessed for their potential use in biomedical applications. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Driving Photocatalytic Efficiency through Controlled Cobalt–Iron and Cobalt–Nickel Ratios for Methylene Blue Degradation Ulfa, Maria; Rohmah, Istinganah Saestu; Anggreani, Cindy Nur
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20410

Abstract

This study explores the development of nanostructured photocatalytic materials based on cobalt–iron (CoFe1-2) and cobalt–nickel (CoNi1-1) systems for the degradation of methylene blue, a persistent organic pollutant commonly found in textile wastewater. As the textile industry contributes significantly to environmental pollution through the discharge of recalcitrant dyes, this work aims to offer an effective and sustainable solution via visible-light-driven photocatalysis. The synthesis strategy employed a hard-template approach using mesoporous silica-gelatin composite (SPG-20), prepared from a mixture of P123 and gelatin under acidic conditions. Following hydrothermal treatment and calcination, the SPG-20 template was acid-activated to enhance surface reactivity. Metal precursors—Co(NO₃)₂.6H₂O with either Fe(NO₃)₃.9H₂O or Ni(NO₃)₂.6H₂O—were infiltrated into the template with citric acid as a chelating and carbon-forming agent. The composite underwent controlled thermal treatment to embed metal species into a confined carbon matrix, followed by alkaline etching to remove the silica scaffold and yield CoFe1-2 and CoNi1-1 carbon nanostructures. Comprehensive characterizations, including XRD, FTIR, BET, UV-DRS, and UV–VIS spectroscopy, revealed that the materials exhibited nanocrystalline domains with low crystallinity and high specific surface area, favorable for photocatalytic activity. BET analysis indicated a greater surface area in CoFe1-2 (104.526 m²/g) than in CoNi1-1 (83.160 m²/g), correlating with a higher number of available active sites. The band gap of CoFe1-2 (1.180 eV) supports efficient visible-light absorption, which, coupled with its higher microporosity, enables superior methylene blue degradation (85% within 90 minutes) compared to CoNi1-1 (75%). Control experiments in the absence of light showed minimal degradation, confirming that the reaction is photocatalytic in nature. Adsorption kinetics followed a pseudo-first-order model, with CoFe1-2 also exhibiting a higher adsorption capacity (171.184 mg/g). These findings demonstrate the potential of template-assisted synthesis in producing tunable, high-performance photocatalysts for practical applications in sustainable textile wastewater treatment. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Design of Bi-and Tri-metal Oxide Photocatalysts via Gelatin-Directed Mesoporous Silica Hard Templating for Advanced Dye Degradation Ulfa, Maria; Lestari, Suwiji
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20460

Abstract

This study aims to develop a photocatalyst combination of NiO, CuO and ZnO metal oxides modified with mesoporous silica gelatin (mSG) to overcome methylene blue (MB) dye waste through photodegradation process. The photocatalysts were synthesized using the hard template method with mSG as the matrix and tested for their performance towards MB degradation under ultraviolet light. Characterization results showed that the G-Ni-Cu-Zn photocatalyst has a larger surface area, better crystalline structure, nano particle size (~26 nm), and band gap energy of 3.16 eV compared to G-Ni-Zn which has a very low surface area, larger particle morphology (~0.46 μm), and band gap energy of 2.13 eV. Photodegradation tests showed a maximum degradation efficiency of 83.67% by G-Ni-Cu-Zn in 120 minutes, which is much higher than that of G-Ni-Zn. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Charge Transport Kinetics in Fluorine-Doped Tin Oxide/Titanium Dioxide/Cadmium Sulfide/Cadmium Selenide Doped with Copper(II)/Zinc Sulfide Photoanode Minh, Nguyen Van; Vinh, Nguyen Xuan; Nhan, Le Minh; Thang, Bui Van; Thomas, Deepu
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20455

Abstract

Quantum dot-sensitized solar cells face major limitations due to electron recombination, which reduces their overall efficiency. To address this challenge, we investigated copper-doped cadmium selenide as a novel approach to enhance charge transport in multilayer photoanodes. The objective of this study was to evaluate the effect of copper doping concentration on charge transport kinetics in TiO₂@CdS@CdSe:Cu²⁺@ZnS photoanodes. Photoanodes with varying Cu contents (0–0.5 mol) were fabricated using the successive ionic layer adsorption and reaction method, followed by ZnS passivation. Electrochemical impedance spectroscopy and current–voltage characterization were employed to analyze charge transfer resistance, fill factor, power conversion efficiency, open-circuit voltage, and short-circuit current density. The optimized Cu(0.2) sample achieved the highest efficiency of 4.68% with a short-circuit current density of 27.35 mA/cm², attributed to improved charge transport, reduced recombination, and enhanced light absorption. However, excessive doping increased recombination and induced structural degradation. In conclusion, appropriate copper doping significantly improves the performance of QDSSCs, providing insights for designing advanced quantum absorber structures in next-generation solar cell technologies. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Ultrasonic-Assisted Transesterification of Tripalmitin Using Limestone-Derived CaO Catalyst Nurdina, Rakhma Amalia; Kamiya, Yuichi; Hatmanto, Adhi Dwi; Pambudi, Fajar Inggit; Suyanta, Suyanta; Nuryono, Nuryono
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20456

Abstract

In producing palm oil-based biodiesel (fatty acid methyl esters) through the transesterification of triglycerides with methanol, a high-performance and straightforward catalyst is required. This research studies the synthesis and characterization of limestone-derived calcium oxide as a heterogeneous base catalyst for the transesterification of tripalmitin, a representation of palm oil triglycerides, with methanol to produce methyl palmitate. Limestone was calcined at 800 °C to produce CaO. The resulting catalyst was characterized using TGA, XRD, FTIR, SAA, and CO2-TPD. The catalytic performance was compared with that of commercial calcium oxide under optimal reaction conditions, namely 50 °C temperature, 60 min reaction time, and 30 mg catalyst mass. The results showed that limestone-derived CaO produced a higher yield (44.6%) than commercial CaO (32.3%). The kinetics study showed that the reaction followed a two-order pseudo-kinetic model with a reaction rate constant value of 0.1450 L mmol-1 min-1. Overall, limestone-derived CaO proved to be an effective, inexpensive, and environmentally friendly alternative catalyst in the production of triglyceride-based biodiesel. Furthermore, the modification of CaO to enhance the catalytic activity needs to be explored further. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Backmatter (Publication Ethics, Right Transfer Agreement for Publishing Form) Istadi, Istadi
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 3 Year 2025 (October 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20481

Abstract

Backmatter (Publication Ethics, Right Transfer Agreement for Publishing Form)
A Study on IIIA Group Metals (B or Ga or Tl) Doped Mo2C-HZSM-5 Catalysts for Methane Dehydroaromatization Pasupulety, Nagaraju; Alamoudi, Majed A.; Al-Zahrani, Abdulrahim A.
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20477

Abstract

Methane dehydroaromatization (MDA) is a promising route for direct conversion of methane into value-added aromatics such as benzene, toluene and naphthalene. This study investigates the effect of IIIA group metals like boron (B), gallium (Ga), and thallium (Tl) doped into Mo₂C/HZSM-5 catalysts tested for MDA at 700 oC and 1800 mL.gcat-1.h-1. The influence of promoters on catalyst acidity and coke formation was investigated through various analytical techniques including NH₃-TPD and TPO. Among the samples, Ga-Mo₂C/HZSM-5 demonstrated greater benzene selectivity and consistent stability due to abundant Mo2C and low temperature coke formations. Whereas, B- or Tl-Mo₂C/HZSM-5 suffered from high temperature coke formations related to their greater acidity and greater extent of surface molybdenum oxidized species. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhanced Adsorption of Brilliant Green Dye Using Barium Ferrite/Graphene Oxide Nanocomposites Saed, Usama Akram; Ali, Alaa H.; Saoud, Ammar A.; Zeitoun, Zeyad
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20453

Abstract

This study presents the synthesis and characterization of barium ferrite/graphene oxide (BaFeO/GO) nanocomposites for the adsorption of brilliant green dye (BGD) from aqueous solutions. BaFeO/GO nanocomposites were fabricated via a co-precipitation method with varying GO content (10-30 wt%), and characterized using Fourier Transform Infra rEd (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Field-Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscope (TEM), Brunauer, Emmett, and Teller (BET), and Vibrating Sample Magnetometer (VSM) techniques. The incorporation of GO enhanced the surface area, reduced BaFeO nanoparticle agglomeration, and introduced additional oxygen-containing functional groups, significantly improving the adsorption performance. Batch adsorption experiments were conducted to evaluate the effects of pH, contact time, adsorbent dose, and initial dye concentration. The maximum dye removal efficiency reached 98.9% with the BaFeO/30%GO composite. Kinetic studies showed excellent agreement with the pseudo-second-order model, while adsorption isotherm analysis indicated that the Langmuir model best fit the equilibrium data, suggesting monolayer adsorption. These results demonstrate the potential of BaFeO/GO nanocomposites as efficient, magnetically separable adsorbents for the removal of cationic dyes from wastewater. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Green Synthesis of Chitosan-Assisted ZnO Nanoparticles and Their Photocatalytic Application in ZnO/TiO₂ Composites for Isopropanol Degradation Hoang, Le H.; Quynh, Ho G.; Nghi, Mai H.; Phuong, Nguyen T. T.; Duong, Ngo T. H.; Long, Nguyen Quang
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 4 Year 2025 (December 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20431

Abstract

Nano-sized ZnO particles were successfully synthesized via a green, efficient, and chitosan-assisted method, which is both cost-effective and environmentally friendly. The nanoscale characteristics of the synthesized particles were confirmed through various analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption–desorption isotherms, diffuse reflectance spectroscopy (DRS), and Fourier-Transform Infrared Spectroscopy (FTIR). This study primarily investigated the photocatalytic performance of ZnO/TiO₂ composites prepared by a simple mechanical mixing approach for the degradation of isopropanol (IPA) in a continuous-flow system under UVA irradiation at room temperature. A range of experimental conditions, including initial IPA concentrations, gas flow rates, relative humidity levels, and the number of UV lamps, were systematically explored. The mechanically mixed ZnO/TiO₂ nanomaterial exhibited enhanced photocatalytic activity compared to pure ZnO. Notably, while commercial TiO₂ showed reduced IPA removal efficiency under humid conditions, the ZnO/TiO₂ composite maintained superior performance, achieving a removal efficiency of 45% over a 3-hour period at 30% relative humidity with an inlet IPA concentration of about 1200 ppmv, a flow rate of 3 L/h, and illumination by four UV lamps. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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