Didik Prasetyoko

Didik Prasetyoko
Institut Teknologi Sepuluh Nopember | ITS · Department of Chemistry

Doctor of Philosophy

About

165
Publications
49,428
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1,696
Citations
Citations since 2017
97 Research Items
1382 Citations
20172018201920202021202220230100200300
20172018201920202021202220230100200300
20172018201920202021202220230100200300
20172018201920202021202220230100200300
Additional affiliations
March 1997 - December 2015
Institut Teknologi Sepuluh Nopember
Position
  • Lecturer

Publications

Publications (165)
Article
CO2 hydrogenation as sustainable route for generation of value-added carbon feedstock is identified as green pathway for mitigation of greenhouse gases emission. CO2 methanation is one of the promising solutions, which only requires reactions at atmospheric pressure while utilising metal catalysts to overcome kinetic limitations. Metal catalysts ca...
Article
Full-text available
Aluminosilicate and ZSM-5 catalyst were synthesized from local materials, low-grade Indonesian kaolin. High quartz impurities content in the low-grade kaolin was successfully reduced by the consecutive treatment process including washing, centrifugation, and Fe3+ treatment. All the synthesized catalyst showed mesoporous structure with pore diameter...
Article
ZnO nanoparticles with mesopores enhanced the photocatalytic degradation of dyes. The potential of gelatin-Pluronic F127 as a double colloidal system was investigated for constructing mesoporosity in ZnO nanoparticles. Amphoteric gelatin with hydrophobic and hydrophilic tails formed a stable colloid as the surface-active agent. The studies highligh...
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Encapsulation of hectorite-modified CTAB with Ca-alginate formed reusable adsorbent beads for wastewater treatment. The thermogravimetric analysis (TGA) investigation indicated excellent thermal stability results for BHec-40 compared to Hec-40. Although the mesoporous surface area of BHec-40 decreased to 79.74 m2 g-1 compared to 224.21 m2 g-1 for H...
Article
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Photocatalytic degradation of Methylene Blue (MB) by zinc oxide/zeolite socony mobile-5 (ZnO/ZSM-5) composites was investigated. The ZSM-5 material was synthesized from red mud by a two-step hydrothermal method to which ZnO loadings at different mass ratios were subsequently performed. Characterizations using X-ray diffraction (XRD), Fourier transf...
Article
The development of a simple, effective, and replicable method for the formation of hierarchically structured materials from natural sources has drawn significant research interest recently. The current study analyzes the two-step hydrothermal synthesis of Indonesian kaolin to hierarchical ZSM-5. The aging temperature and time are the two crucial pa...
Article
Mesoporous Silica with a large mesopore channel was synthesized using the sol-gel method for dye adsorption. A dual template consisting of P123 and gelatin at different ratios was employed in the sol-gel synthesis to enhance surface area and mesopore diameter. Gelatin is a green pore directing agent that strengthens P123 thermal stability during th...
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Mesoporous silica NSG had been synthesized while employing gelatin as a natural template to successfully increase the particle size and expand the pore diameter of NSG. All silica samples exhibited a similar XRD pattern with a broad peak centred at 2θ = 22.9°, as the characteristic of amorphous silica. FTIR results showed that the reduction of Si–O...
Article
Due to the limitation of a sole method for removal of hexavalent chromium (Cr(VI)) which unable to process higher concentrations and limited efficiency of removal. Thus, the integrated reduction and adsorption system was designed by combining microbial fuel cell (MFC) and adsorbent (MOF type HKUST-1, UiO-66, and ZIF-8) to remove Cr(VI). HKUST-1 sho...
Article
CO2 hydrogenation to dimethyl ether was investigated on PdZn alloy deposited onto ZSM-5 nanoparticles. The effect of ZSM-5 morphology and textural properties were investigated on the efficiency of CO2 conversion and product selectivities. ZSM-5 nanoparticles showed higher conversion and selectivity towards DME than the elongated cubic ZSM-5. Unifor...
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Hydrogen gas production generated from carbon-free molecules while utilizing solar energy provided a pathway for zero carbon emission energy. In photocatalytic hydrogen gas production, alcohol and oxygenated compounds as sacrificial agents are often added to accelerate the water splitting process while simultaneously decomposing to form H2 and CO2....
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Simple and green preparation of ZnO blended with Parangtritis beach sand (BS) catalysts for oxidative desulfurization of dibenzothiophene (ODS-DBT) has been conducted. The ZnO-BS catalysts were prepared by blending ZnO with beach sand under a weight ratio of 1:1, 1:2, and 1:4, and then heated by microwave (MW) at 540 watts for 30 min, resulting in...
Article
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Mesoporous sodalite nanoparticles were directly synthesized from Indonesian kaolin with the addition of CTABr as a mesopore template. The studies highlighted the importance of aging time (3–12 h) and temperature (50–80 °C) on increasing surface area and mesoporosity of sodalite. Indonesian kaolin was used without pre-treatment and transformed to so...
Article
Hexavalent chromium (Cr(VI) is a highly toxic and carcinogenic form of chromium (Cr) metal and can enter the environment through improper treatment of industrial wastewater. Investigations on the removal of Cr(VI) aims to produce a sustainable method to efficiently reduce Cr(VI) to Cr(III). Microbial fuel cells (MFCs) is a green technology driven b...
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Industri batik di Indonesia didominasi oleh kelompok UMKM yang tersebar di seluruh Nusantara. Hampir setiap daerah terdapat industri batik yang mencirikan budaya daerah. Salah satu UMKM batik yang sedang digalakkan oleh pemerintah adalah UMKM batik Madura di Desa Klampar, Kecamatan Proppo, Kabupaten Pamekasan. Wilayah Klampar telah ditetapkan sebag...
Article
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Red mud wastes have been converted into mesoporous zeolite socony mobile-5 (ZSM-5) followed by deposited titanium dioxide (TiO2) nanoparticles to generate synergy adsorption-photodegradation for removal of dye removal in waste water. The amount of TiO2 loading was varied to achieve optimum photocatalytic activity while maintaining the mesoporosity...
Article
Conversion of lignocellulosic biowastes from agricultural industry into nanocrystalline cellulose provides pathway to reduce environmental pollution while enhancing the economic value of biowastes. Nanocellulose (NCC) with uniform morphology was isolated from pepper (Piper nigrum L.) stalk waste (PW) using acid hydrolysis method. The role of inorga...
Article
Fibrous silica tantalum (FSTa) and a series of metal oxides (silver oxide (AgO), copper oxide (CuO) and zinc oxide (ZnO)) supported on FSTa were prepared by hydrothermal and electrochemical method, respectively. X-ray diffraction, nitrogen adsorption-desorption analyses, Fourier-transform infrared, ultraviolet–visible diffuse reflectance spectrosco...
Article
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The numerous benefits provided by Zinc oxide have attracted attention. Therefore, plenty of ZnO synthesis methods have been developed. This study reported the phytosynthesis of ZnOs by Hibiscus tiliaceus leaf extract, the characterization of phytosynthesised ZnOs, and their antibacterial and antioxidant activities. The H. tiliaceus leaf extract was...
Article
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The fibrous silica HZSM-5 (HFZ) was synthesized by microemulsion method assisted with ZSM-5 seed crystallization under different amounts of a silica source, tetraethyl orthosilicate (TEOS, 1.0–1.5 mol) for superior benzene methylation activity. The aptness of the physicochemical properties of HFZ offered an abundance of active sites, allow benzene...
Article
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CO methanation has arisen as an attractive research area due to its ability to transform syngas into substituted natural gas. Current monometallic catalysts have a severe problem; quickly deactivated. It is generally known that by introducing another metal to create a bimetallic catalyst, synergistic interaction between both metals considerably enh...
Article
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Hematite (α-Fe2O3) with uniform hexagonal flake morphology has been successfully synthesized using a combination of gelatin as natural template with F127 via hydrothermal method. The resulting hematite was investigated as adsorbent and photocatalyst for removal of ibuprofen as pharmaceutical waste. Hexagonal flake-like hematite was obtained followi...
Preprint
Hematite (-Fe2O3) with uniform hexagonal flakes morphology has been successfully synthesized using a combination of gelatin as natural template with F127 via hydrothermal method. The resulting hematite was investigated as adsorbent and photocatalyst for removal of ibuprofen as pharmaceutical waste. Hexagonal flake-like hematite was obtained followi...
Article
Santa Barbara Amorphous (SBA-15) containing iron oxide with a sucrose-modified in a heterogeneous reaction for degradation methylene blue (MB) successful synthesized used hydrothermal, ultrasonication, and wet impregnation method. SBA-15 is mesoporous silica that can easily serve as external and internal surfaces making it suitable for a wide range...
Article
Optimisation of biodiesel production from non-edible Reutealis Trisperma oil (RTO) was investigated using Taguchi method. Biodiesel was produced via consecutive esterification and transesterification reactions. Esterification of RTO was carried out using acid catalyst to decrease the amount of free fatty acid from 2.24% to 0.09%. Subsequent transes...
Article
UiO-66 and chitosan/UiO-66 composites were successfully synthesized by varying the mass addition of chitosan which were 0%, 2.5%, 5%, 10%, and 20% of the mass of UiO-66, denoted as UiO-66, Cs(2.5)/UiO-66, Cs(5)/UiO-66, Cs(10)/UiO-66, and Cs(20)/UiO-66, respectively. UiO-66 was modified with chitosan using the impregnation process. The X-ray diffrac...
Article
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Red mud as industrial waste from bauxite was utilized as a precursor for the synthesis of mesoporous ZSM-5. A high concentration of iron oxide in red mud was successfully removed using alkali fusion treatment. Mesoporous ZSM-5 was synthesized using cetyltrimethylammonium bromide (CTABr) as a template via dual-hydrothermal method, and the effect of...
Article
Conversion of industrial pepper bio-waste (PW) to microcrystalline cellulose (MCC) was investigated as reinforcement agent of natural polymer bio-composites. The investigation highlighted the importance of hydrothermal assisted alkalization step for efficient separation of cellulose from lignin in PW in order to enhance the yield and the crystallin...
Article
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The activity of mesoporous Al-MCM-41 for deoxygenation of Reutealis trisperma oil (RTO) was enhanced via modification with NiO nanoparticles. Deoxygenation at atmospheric pressure and under H2 free conditions required acid catalysts to ensure the removal of the oxygenated fragments in triglycerides to form liquid hydrocarbons. NiO at different weig...
Article
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Catalytic CO2 hydrogenation to CH4 offers a viable route for CO2 conversion into carbon feedstock. The research aimed to enhance CO2 conversion at low temperature and to increase the stability of Ni catalysts using zeolite as a support. NaZSM-5 (MFI), NaA (LTA), NaY (FAU), and NaBEA (BEA) synthesized from kaolin were impregnated with 15% Ni nanopar...
Conference Paper
The aim was to determine the effect of different sources of water glass on geopolymer properties including compressive strength, apparent porosity, and acid resistance. The sources of water glass used in this study were Brataco (A), Sinar Mas (B), and Omya (C). Geopolymers based on fly ash was successfully made with variations in water glass source...
Article
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This study discusses the development of Indonesian natural zeolite and agricultural waste i.e bagasse ash and rice husk ash as natural adsorbents. These materials were used as an adsorbent for methyl orange and methylene blue adsorption for isotherm and kinetic study. Adsorption kinetic models for methyl orange and methylene blue with all adsorbent...
Article
Full-text available
Limestone was converted to high surface area CaO/MgO catalysts via calcination-hydration-dehydration (CHD) method for transesterification of coconut oil to biodiesel. Thermal decomposition at 900°C transformed dolomite CaMg(CO3)2 to large crystallite and low surface area CaO/MgO. CHD treatment eliminated the large CaO/MgO aggregates and increased t...
Article
Indonesian kaolin was successfully transformed into aluminosilicates (ALS) via two-step hydrothermal synthesis using different structure directing agents (SDA). The effects of structure, porosity and catalytic activity of ALS were determined for deoxygenation of bio-oil into green diesel. The first hydrothermal step used silicalite and tetrapropyl...
Article
Synthesis of ZIF-8 using acetic acid (AA) as polar solvent produced uniform nanoparticles with enhanced adsorption properties for methylene blue removal. Morphology, structural properties and adsorption capacity of ZIF-8 nanoparticles were compared with ZIF-8 produced using N,N-dimethylformamide (DMF) solvent. ZIF-8 (AA) formed uniform nanoparticle...
Article
In this research, the effect of sodium silicate (Na2SiO3) on the geopolymerization of fly ash type F (low calcium) has been studied. The variations of Na2SiO3 used in the synthesized geopolymers were 19, 32, and 41wt%. The fly ash from three different power plant sources was characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Par...
Article
The conversion of CO2 into carbon feedstock via CO2 hydrogenation to methane requires a stable catalyst for reaction at high temperatures. Zeolite NaY (abbreviated hereafter as NaY) synthesized from naturally occurring kaolin provides a stable support for Ni nanoparticles. Kaolin can be further dealuminated using sulfuric acid to reduce the Si/Al r...
Article
span id="docs-internal-guid-710aacff-7fff-63c8-d621-c027e79f6f4f"> The present research studied about decolorization of methylene blue dye using photocatalyst ZnO/ZSM-5 under UV-LED lamp. ZnO/ZSM-5 was synthesized using the impregnation method by adding two grams ZSM-5 to Zn solution 0.3 M 10 mL. Photocatalyst was characterized using X-ray diffract...
Article
span id="docs-internal-guid-710aacff-7fff-63c8-d621-c027e79f6f4f"> ABSTRACT. The present research studied about decolorization of methylene blue dye using photocatalyst ZnO/ZSM-5 under UV-LED lamp. ZnO/ZSM-5 was synthesized using the impregnation method by adding two grams ZSM-5 to Zn solution 0.3 M 10 mL. Photocatalyst was characterized using X-ra...
Article
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Geopolymers were synthesized using fly ash as raw material from six steam power plants, Adipala (FA1), Indramayu (FA2), Paiton 9 (FA3), Asam-asam (FA4), Pulau Pisang (FA5), and Sanggau (FA6). Fly ash was tested for several characteristics using XRF, XRD, and SEM. XRF analysis showed FA1, FA4, and FA5 included in class C fly ash while FA2, FA3, and...
Article
Full-text available
For the first time, carbon microspheres successfully synthesized by using block copolymer F127 combined with gelatin, sucrose, and H 2 SO 4 as soft template, source carbon, catalyst, respectively. The following step of synthesis are hydrothermal treatment, evaporation, carbonization and pyrolysis treatment under nitrogen flow. Microspheres carbon r...
Conference Paper
ZSM-5 is a zeolite that widely used as adsorbent. The performance of ZSM-5 can be improved by modification of zeolite with metal growth. This research modified ZSM-5 with a transition metal nickel (Ni). The modification aims to provide photocatalytic activity of ZSM-5. The prepared-materials were analyzed with XRD, FTIR, FESEM-EDX, and BET techniqu...
Conference Paper
In this research, a zeolite Y was synthesized from Bangka-Belitung Kaoline. The synthesis was conducted through activation of metakaolin with sulfuric acid at various concentration of 3, 6, 9, 12, and 15 M. The aging and hydrothermal process was conducted at 100 °C for 24 h. The products were characterized by X-ray Diffraction (XRD), Infrared Spect...
Article
The growth in textile and printing industries proven detrimental to the aquatic environment as the industrial waste containing dye seeped into the ecosystem. A high concentration of dye in water possess negative impacts on water ecosystem and harmful to human health. Removal of methylene blue (MB) dye from industrial waste via adsorption pathway ha...
Article
Upgrading the inferior properties of Calophyllum inophyllum oil via catalytic cracking into biofuel required a porous heterogeneous acid catalysts. Hierarchical ZSM-5 (Hi-ZSM-5(K)) produced from desilication of kaolin-derived ZSM-5 was employed as catalyst and the activity was compared with hierarchical ZSM-5 obtained from templating method (Hi-ZSM...
Article
Full-text available
Zeolite Y has been synthesized from Kaolin Bangka Belitung as precursor through activation of metakaolin with acid. The synthesis of zeolite Y consist of metakaolinitation, activation metakaolin with sulfuric acid using various concentrations (3, 6, 9, 12, and 15 M), aging, hydrothermal process for 24 hours at 100 °C. The solid products were charac...
Article
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A synthesis is presented in this research, microspheres carbon by mixing Pluronic F127 triblock copolymer, which was used as a main pore size direction, gelatine as a codirecting agent, Sucrose becomes the main ingredient of carbon precursor and H2SO4 be a catalyst. The mixture solution carried out at hydrothermal reactor followed by evaporation, p...
Article
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A series of nanoporous carbon was prepared with MOF-5 as a template and furfuryl alcohol as an additional carbon source by carbonation at temperatures of 550 °C and 900 °C, respectively, with and without activation using KOH. XRD patterns of the obtained carbons before and after the activation process showed characteristic peaks at the same 2θ valu...
Article
Zeolite is extensively synthesized for the application in a large variety of catalysis processes such as ion exchange, hydrocarbon cracking, and organic synthesis. In order to satisfy the serious terms of sustainability that denotes to the reduction of costs and chemical waste, kaolinite‐based zeolites were produced from cheap natural resources as...
Article
Hierarchical ZSM-5 was successfully synthesized by hydrothermal crystallization of kaolin clay. A statistical experimental design Taguchi method with analysis of variance (ANOVA) with an L 9 Orthogonal array (OA) was used to optimize the formation of high mesoporosity in hierarchical ZSM-5. Samples from kaolin mixtures crystallized at 80-175°C for...
Conference Paper
The synthesis of zeolite NaA from Bangka kaolin was started by activation step with calcination at temperature 650°C for 2 hours. This activation produced metakaolin, an amorphous phase as assigned by XRD pattern. Based on the result by XRF technique, metakaolin produced from thermal treatment was mostly composed of silicon and aluminum with SiO2/A...
Conference Paper
For the first time, zinc oxide sheet like-strructure (ZoS) have been synthesized via colloidal templating methode using gelatin-block copolymer as template followed by high thermal calcination. Ibuprofen have been removed by the resulting zinc oxide sheet like-strructure sample at room temperature and human body temperature. Characterization of tex...
Article
Full-text available
Indonesian kaolin was used as precursor for synthesis of sodalite. Synthesis parameters were optimized by varying the Si/Al ratios, stirring and aging conditions, and water composition. X-ray diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX), and Particle Size Analyzer (PSA) were u...
Article
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In this research, we present synthesis of high porosity and surface areas of nanomaterials Based on mesoporous carbon (MNbC) with hard tempering route. Firstly, silica hard template route assembly was prepared by using tetraethoxysilane (TEOS) and triblock copolymer Pluronic F127 roomates is employed as directing templating agents under acidic cond...
Article
Size tunable mesoporous carbon microspheres, MCMs were obtained using Pluronic F127 and gelatin in co-templating method via hydrothermal and pyrolysis treatments. The presence of gelatin increased the mechanical strength of Pluronic F127 which can sustain the uniform microspherical structure of carbon following pyrolysis at 950 °C. The diameter of...
Article
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Alumina was leached from red mud by hidrometalurgy method. Alumina from red mud was leached by desilication process, separation of iron oxide process, and formation of alumina salt process. Residu of each step was characterized by X-ray diffraction (XRD), X-ray flourence (XRF), scanning electron microscopy-energy dispersive x-ray analysis (EDX). Fr...
Article
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Ionic liquids are considered as emergent pollutants as these compounds possess high persistent in aqueous solution and toxicity toward aquatic organism. In this work, the adsorption equilibrium of 27 ionic liquids, with different cation head group, alkyl chain length, and anion, onto ZSM-5 were measured experimentally at several composition and at...
Article
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In this paper, ordered mesoporous carbon CMK-3 have been synthesized via hard templating methode using mesoporous silica as template followed by thermal carbonization. The resulting ordered mesoporous carbon sample have been loaded by ibuprofen as anti inflammantory drug model up to 75% (w/w). Characterization of textural and structural resulting o...
Article
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This research paper describes the synthesis of a heterogeneous catalyst (Potassium hydroxide (KOH)-impregnated eggshell) from waste chicken eggshell using the wet impregnation technique. In this experiment, the catalyst was derived from eggshell that was calcined at 800 °C for 5 h. It was impregnated with KOH at various KOH concentrations (10%, 15%...
Article
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Hierarchical micro-mesoporous aluminosilicates nanoparticles were synthesized at different of Si/Al ratios and were directly used as a solid acid catalyst for acetalization reaction with propylene glycol. TEM and N2 adsorption analysis of the resulting aluminosilicates revealed the formation of the hierarchical structure occurs on the Si/Al ratio i...
Article
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Mesoporous alumina has been successfully synthesized from bauxite residues (red mud) as raw material and cetyltrimethylammonium bromide (CTAB) as template at room temperature. The effects of crystallization time and molar ratio of H2O/CTAB on structural and textural properties of mesoporous alumina were investigated. The synthesized product was cha...
Article
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The well-ordered mesoporous silicate (SBA-15) was synthesized via soft-templating route using block copolymer P-123 as directing agent and tetraethoxysilane as the silica source. The ordered mesoporous carbon (CMK-3) was synthesized via a hard casting route using SBA- 15 as nano-template and sucrose as carbon source. The character of mesoporous str...