Category: Riset

Phys. Rev. B 94, 184404 – Published 4 November 2016 Cross-type orbital ordering in the layered hybrid organic-inorganic compound (C6H5CH2CH2NH3)2CuCl4 A. A. Nugroho, Z. Hu, C. Y. Kuo, M. W. Haverkort, T. W. Pi, D. Onggo, M. Valldor, and L. H. Tjeng https://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.184404

Indonesian Journal of Chemistry Volume 16, Issue 2, 2016, Pages 198-207 Synthesis and characterization of oligomer 4-vinylpyridine as a corrosion inhibitor for mild steel in CO2 saturated brine solution In this work, the oligomer of 4-vinylpyridine designated as O(4-VP) was synthesized by hydrogen peroxide initiated chain growth polymerization and characterized in terms of molecular weight…

Mesoporogen-free synthesis of hierarchically porous ZSM-5 below 100 °C Microporous and Mesoporous Materials, 2016, 226, 344-352 The molecular diffusion with zeolites is somewhat limited, particularly for bulky molecules because zeolites only have micropores, which, in turn, limit their use as catalysts. Generation of hierarchically porous ZSM-5 with micro and mesopores has been a rational solution for overcoming…

Further Insight into the Definite Morphology and Formation Mechanism of Mesoporous Silica KCC‑1 Langmuir, 2016, 32, 5802-5811 The unique three-dimensional pore structure of KCC-1 has attracted significant attention and has proven to be different compared to other conventional mesoporous silica such as the MCM-41 family, SBA-15, or even MSN nanoparticles. In this research, we carefully examine the morphology…

Effects of graphene in graphene/TiO2 composite films applied to solar cell photoelectrode Journal of Physical Chemistry C Volume 118, Issue 19, 15 May 2014, Pages 9974-9981 A simple and effective method has been developed to prepare a composite porous film that incorporates graphene sheets and anatase TiO2 nanoparticles. After sensitization, the films have been investigated…

Charge transport and recombination in TiO2 brookite-based photoelectrodes Journal of Physical Chemistry C Volume 118, Issue 41, 16 October 2014, Pages 23459-23467 The photoactivity of the stable nanosized TiO2 polymorphs is challenging for many advanced applications. In the present work, brookite TiO2 nanoparticles with two different shapes have been used as building blocks for the…

Macromolecular Symposia Insertion of Platinum Particles in Bacterial Cellulose Membranes from PtCl4 and H2PtCl6 Precursors Henry Fonda Aritonang, Djulia Onggo, Ciptati , Chyntia L. Radiman The Pt nanoparticles have been synthesized in situ using bacterial cellulose (BC) membranes as the matrix. The BC was immersed in a solution of PtCl4 and H2PtCl6 as Pt(IV) precursors…

Indonesian Journal of Chemistry Synthesis and Characterization of [Fe(picolinate)3][MnNi(oxalate)3].CH3OH Polymeric Complex Fahimah Martak, Djulia Onggo, Ismunandar Ismunandar, Agung Nugroho Polymeric complex [Fe(picolinate)3][MnNi(oxalate)3].CH3OH has been successfully synthesized using H-tube technique. The chemical composition of the synthesized product was determined by Elemental Analysis and Atomic Absorption Spectrometry. Infrared spectrum shows that the oxalate ligand acts as a…

Inorganica Chimica Acta Volume 361, Issues 14–15, 1 October 2008, Pages 4047–4054 Synthesis, crystal structure and magnetic properties of the spin crossover system [Fe(pq)3]2+ Three new compounds formulated (ClO4)2[Fe(pq)3] (1), (BF4)2[Fe(pq)3] · EtOH (2) and {(ClO4)[MnCr(C2O4)3][Fe(pq)2(H2O)2]} (3), where pq is 2,2′-pyridylquinoline, have been synthesised and characterised. Despite the different crystal packing exhibited by 1 and…

Journal of the Chinese Chemical Society Atomic Simulations of Aurivillius Oxides: Bi3TiNbO9, Bi4Ti3O12, BaBi4Ti4O15 and Ba2Bi4Ti5O18 Doped with Pb, Al, Ga, In, Ta Afifah Rosyidah, Djulia Onggo, Khairurrijal, Ismunandar The Aurivillius oxides were originally of interest for their ferroelectric properties and have recently been explored in the field of oxide ion conductivity. Atomistic simulation methods…