Search results

Influence of Zirconium Doped Titanium Oxide Towards Photocatalytic Activity of Paraquat Nur Afiqah Badli1,a, Rusmidah Ali1,b* and LenyYuliati2,c 1 Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia 2Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
X-ray diffraction (XRD) diffratogram of Zr doped TiO2 photocatalyst showed a mixture of anatase/rutile TiO2 crystalline structures at 750°C.
Besides that, the new diffraction peak was observed when the dopant ratio was increased to (20:80) and (30:70) showed in Fig. 4 (b) and (c) assigned as an orthorhombic structure Ti2ZrO6 at 2θ value 30.71°.
TiO2 catalyst shows compact structure with uninform shape.
Acknowledgements The authors wish to thank the Chemistry Department, Faculty of Science, Ibnu Sina Institute and Universiti Teknologi Malaysia for the experimental works facilities, Ministry of Science, Technology and Innovation, Malaysia for E-Science Fund Vote 4S082 and the Ministry of Higher Education (MOHE) Malaysia for MyPhD Scholarship given to Nur Afiqah binti Badli.

Structure and Performance of Chemical Duplex Plating Ti Metal Layer on Diamond Surface by Hydrothermal Method Xiang Dong1,a*, Jia Li-qun1,b, Liu Ke-gao1,c 1 School of Material Science and Engineering, Shandong Jianzhu University, Jinan 250101,China a e-mail: xiangd1015@163.com, b e-mail: jialiqun@sdjzu.edu.cn, c e-mail: liukg163@163.com Keywords: Diamond; Hydrothermal method; Chemical duplex plating; Electorless plating; Surface metallization; Heat treatment Abstract: As a surface of diamond has a higher interfacial energy and worse binding force, the diamond shed from matrix easily.
The structure and performance of the metallic coating on diamond surface were tested by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and diamond compressive strength instrument.
Because the carbides of W and Ti present at the boundries between the coating and diamond surface, the combination of chemistry and metallurgy is gotten.
According to the literature [14], the composition, structure and formation conditions of compounds is Ti/diamond:＞873K(600℃), TiC; W/diamond:＞973K(700℃), WC.
Such structure is helpful to combing between diamond and coating, and oxidation tendency decreases

The structure, morphology, and quality of the deposited carboniuos materials have been investigated.
The broad peak at 25.9° confirms the amorphous structure of the sample [30].
Materials, Egyptian Journal of Chemistry, 65 (2022) 691–714. doi:10.21608/ejchem.2021.99842.4641
Oraby, Carbon Nano Based Materials and Their Composites for Gas Sensing Applications: Review, Egyptian Journal of Chemistry. 65 (2022) 591–614. doi: 10.21608/ejchem.2021.99842.4641
Kang, Formulation of amorphous carbon embedded CuFeS2 hybrids for the electrochemical detection of Quercetin, Materials Today Chemistry. 26 (2022) 101228. doi:https://doi.org/10.1016/j.mtchem.2022.101228

Structure studies were performed by X-ray diffraction, scanning and transmission electron microcopies.
Electron microscopy images reveal rough, unfolded and ramified structure of solid skeleton.
This work involves the structure analysis of nanocrystalline powder of MgO aerogel prepared by the sol-gel method with supercritical drying procedure.
Structure of MgO aerogel is looser as this of MgO xerogel.
Scanning and transmission electron microscopy images show relatively loose, rough, unfolded structure of aerogel.

Seeing from that, two characteristic peaks of Co 2p1/2 at 793.5 eV and Co 2p3/2 at 778.5 eV (Figure 2a) indicates the presence of Co-Co,[33] which is popular in CoSe2 with Co/Se/Co layered structure.
Huang: the Journal of Physical Chemistry Letters, Vol. 4 (2013) No.8, p.1227
Xu: Journal of Materials Chemistry, Vol. 22 (2012) No.27, p.13662
Wang: Journal of Materials Chemistry A, Vol. 2 (2014), No.38, p.16023

Preparation of Silica Nanotubes with Cobalt Complex Nanofibers as Templates Lirong Ren1, a, Lin Guo 1, b and Michael Wark2, c* ¶ 1 Dept. of Applied Chemistry, School of Materials Science and Engineering, Beihang University, Beijing 100083, China 2 Institute for Physical Chemistry and Electrochemistry, University of Hanover, Callinstr. 3-3A, Hanover D-30167, Germany a Renlr2001@yahoo.com, bGuolin@buaa.edu.cn, cMichael.Wark@pci.uni-hannover.de Keywords: cobalt complex, magnetic nanoparticles, template, silica nanotubes Abstract.
The increased surface area of SiO2 materials with a tubular structure in the nanometer regime could lead to unpredictable improvements regarding the catalytic effects.
Wark: Frontiers of Solid State Chemistry ( 2002), p. 441

Optimization of the structures became inevitable and requires a very precise knowledge of the material characteristics.
Thus, the aim of this research is to build up a simulation tool for the process of cure, based on coupling models taking into account the mechanics, the thermal, the diffusion and the chemistry.
This evolution of the mixture, governed by the equations of the diffusion and the equations of the chemistry, is taken into account in the equations of the thermal and of the mechanics.
Results Due to too long calculation time only couplings between chemistry, thermal and mechanics were considered for FEM cure simulations in the field of linear elasticity.

The BVOC emissions could have more important impact on atmospheric chemistry and carbon cycle in both rural and urban areas [6].
In this study, BVOC seasonal emission rate and emission pattern of ginkgo (Ginkgo biloba linn), were measured and the effects of light and temperature on BVOC emissions were estimated in order to better understand the potential contribution of urban trees to the tropospheric air chemistry.
The monoterpene emitters always had specialized structures to store monoterepenes, such as glandular trichomes and resin ducts.
Tyndall: Atmospheric Chemistry and Global Change (Oxford University Press, New York 1999)

Spectrum One-B type FT-IR (American Pekin Elmer) was used to analysis the structure of different samples.
Domka: Journal of Materials Chemistry, Vol. 7 (1997), pp. 1655-1659
Grzeskowiak：Journal of Materials Chemistry, Vol. 11 (2001), pp. 1288-1293
Jiang: Journal of Materials Chemistry, Vol. 18 (2008), pp.229-234.

Adsorption of Congo Red Dye on HDTMA Surfactant-Modified Zeolite A Synthesized from Fly Ash Jumaeri1,a, Sri Juari Santosa2,b, and Sutarno2,c 1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Semarang State University, Semarang, Indonesia 2Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia ajumaeri.unnes@gmail.com, bsjuari@yahoo.com, csutarno@ugm.ac.id Keywords: adsorption, Congo Red dyes, surfactant modified zeolite A Abstract.
In generall, the performed technique is a combination of the physics, chemistry and biology process, including photo-oxidation, chemical-coagulation, sedimentation, disinfection and adsorption [3].
The existence of substitution of Si by Al atoms in the structure of the zeolite framework resulted the permanent negative charge on the zeolites, so it is suitable as an effective cation exchanger.