The research interest of the Electrochemistry and Corrosion Laboratory range from the preparation of advanced functional materials for energy, environment and biomedical, especially, from natural resources and solid waste using various methods such as electrochemical, electrospinning, and electro spray. Examples of advanced functional materials we are developing including electrocatalyst for oxygen reduction reaction, catalyst for esterification, high capacity liquid absorbents, etc. Below are some projects we are currently conducted.
Elelctrochemical process and reactor design
The goal of this project is to develop electrochemical reactors to produce various kinds of nanoparticles. We have successfully designed a large-scale electrochemical reactor for the production of magnetite nanoparticles by electro-oxidizing low-quality iron in water using monopolar arrangement of the electrodes. Novel monopolar arrangement was proposed instead of the conventional one, which we call the arrangement as alternating monopolar. The performance of the alternating monopolar are superior compared to its counterpart conventional monopolar arrangement. The design has also successfully used to produce manganese dioxide.
Some of the results have been published in reputable scientific SCI journals such as Chemical Engineering Science, Journal of Nanoparticle Research, Advanced Powder Technology, etc. (see here). Further works are currently still in progress to develop continuous process and to be used for other nanomaterials.
Adv. Powder Technol. (2020) Chem. Eng. Sci. 201,112 (2019) J. Cer. Soc. Japan 126, 906 (2018) J. Powder Technol. Adv. Func. Mat. 1, 1 (2018) J. Chem. Eng. Japan 49, 144 (2016) Asia-Pac. J. Chem. Eng. 9, 768 (2014) Adv. Powder Technol. 24, 507 (2013) J. Nanopart. Res. 14, 807 (2012) Adv. Powder Technol. 23, 328 (2012) KONA Powder Part. J. 36, 145 (2019)
Recovery of silica from solid wastes for functional materials
The goal of this project is to develop a process to recover silica containing in biomass/biomass waste and convert it into useful materials. We have devised a facile and inexpensive method to recover silica from bagasse ash using alkali extraction at low temperature to produce sodium silicate as an intermediate product for various applications. Bagasse ash is the main waste from sugar cane industry produced from the combustion of bagasse in the boiler. The fabrication of sodium silicate is commercially carried out at a temperature of more than 1300 deg C. From the sodium silicate produced from bagasse ash using the low-temperature alkali extraction, various kinds of porous functional materials have been prepared including silica aerogel, pore sized-controlled mesoporous silica for adsorbent, etc. The facile method can be easily adopted for other biomass ash such as rice husk ash, etc.
Some of the results have been published in reputable SCI journals such as Colloid and Surfaces A, Microporous and Mesoporous Materials, Advanced Powder Technology, etc. (see here). Further works are still undergoing to develop silica nanofluid for enhanced-oil recovery.
Micropor. Mesopor. Mat. 218, 95 (2015) Coll. Surf. A 476, 1 (2015) Adv. Powder Technol. 25, 1593 (2014) J. Non-Cryst. Solid 400, 6 (2014) Asia-Pac. J. Chem. Eng. 7, 448 (2012) Adv. Powder Technol. 20, 468 (2009)
Development of cellulose/carbon aerogels from natural resources
The goal of this project is to develop a process to fabricate cellulose/carbon aerogels from natural resources for use as sorbent materials or other applications such as heat insulator, solar thermal conversion materials, electrocatalyst, catalyst, etc. We have devised a cheap and green method to convert coir fiber into compressible and ultralight cellulose aerogel using alkali-urea method and freeze drying. The cellulose aerogel derived from the coir fiber, an abundantly available agricultural waste materials, has high absorption capacity towards water, oil and dyestuffs. The aerogel has a macroporous structure, ultralight density, high porosity, good durability, and thermal stability. Carbonizing the cellulose aerogel under inert environment at high temperature produce carbon aerogel that inherit the microporous structure of cellulose aerogel.
The works have been published in reputable SCI journals such as cellulose (see here). Further works are still undergoing to optimize the process and to fit the aerogel for specific applications.
Cellulose 26, 9583 (2019) Adv. Powder Technol. (2020)
Development of nanofluid for enhanced oil recovery (EOR) and solving liquid loading in gas well
The goal of this project is to develop nanofluid based on nanoparticles and surfactant to enhance the recovery of oil in rock and to solve the problem of liquid loading in gas well.
Funding & Collaborations
The works are funded by the Ministry of Education and Culture, the Ministry of research and Technology, and Japan Science and Cooperation Agency (JICA) through JICA-Predict2, and grant-in-aid from ITS. We also receive support from some companies, e.g., PT. Trans Jawa Sulawesi, PT. Petrokimia Gresik for providing urea and steel plate, and PT. PQ Silica Indonesia for water glass. Some research projects are in collaboration with other universities including Hiroshima University (Prof. Kikuo Okuyama, Assoc. Prof. Takashi Ogi, Dr. Ratna Balgis), Tokyo University of Agriculture and Technnology (Assoc. Prof. I. Wuled Lenggoro), Universitas Sebelas Maret (Dr. Agus Purwanto, Dr. Adrian Nur), Universitas Negeri Malang (Prof. Fauziatul Fajaroh, Dr. Nazriati, Dr. Nandang Mufti), Universitas Padjadjaran (Prof. I Made Joni, Prof. Camellia Panatarani), and Universitas Internasional Semen Indonesia (Eka Lutfi Septiani, Okky Putri Prastuti).