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The current extraction methods can be divided into three types, physical chemistry method, chemical method, and physical method.
Environmental Chemistry. 25(2006) 722-725.
Environmental Chemistry. 27(2008) 310-313.
Extraction of extracellular polymeric substances from aerobic granule with compact interior structure, J.
A scaling method for priorities in hierarchical structures, J Journal of Mathematical Psychology. 15(1977) 234-281.

The Effect of Varying Ca-content on the Structure of High-Tc Superconductor (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3O7-���� (x = 0.5, 0.6, and 0.8) studied by Neutron Powder Diffraction Yasushi Sato 1, MarkusValkeapää 2, Valery Petrykin 1, Minoru Osada 1, Sten Eriksson1,3, Masato Kakihana1 , Håkan Rundlöf 3 1 Materials and Structures Laboratory, Tokyo Institute of Technology, 226-8503 Yokohama, Japan 2 Laboratory of Inorganic Chemistry, Göteborg University, 41296 Gothenburg, Sweden 3 Studsvik NFL, Uppsala University, 61142 Nyköping, Sweden Keywords: Rietveld analysis, Neutron Powder Diffraction, High-Tc Superconductor Abstract.
The small impurity present can be either, Ca8La5Cu24O41 and some unknown third phase, or a single unknown phase with a structure similar to the orthorhombic Ca8La5Cu24O41.

Structure and Phase Composition Study of Thin CdS and CdxZn1-xS Films E.
A.Maximovski, N.I.Fainer and Yu.M.Rumyantsev Institute of Inorganic Chemistry SB RAS, 3, Pr.
Structure and phase composition of CdS and CdxZn1-xS thin film were investigated by X-ray diffraction using SR.
The microscopic structure of thin CdxZn1-xS films are clarified by HREM analysis using a JEM2010 microscope.
CdxZn1-xS films grown on fused silica have also hexagonal structure.

Preparation and Properties of High Performance Polyimide Foam Kailiang Qi a, Guangcheng Zhang b, Songming Li c , Liangwei Liu d , Zhen He e Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi’an, 710129, P.R.
Hot stage optical microscope (Nikon Eclipse E400) was used to observe the bubble structure in foaming process.
Scanning electron microscope (SEM, Hitachi S-4300) was used to examine the cellular structure of PI foam.
Fig.1 FTIR spectra of PEAS precursor powder and PI foam (a)mono-bubble (b) mutiple bubble (c) ribbed bubble Fig.2 Different kinds of bubble structures Fig.3 SEM micrographs of cellular structure Thermal properties.
The chemical structure and cellular structure of PI foam are characterized using FTIR and SEM which showed that the cellular structure was comparatively uniform as the particle size of PEAS precursor powder was about 100μm.

SiC lateral MOSFETs with multi-RESURF structures have been fabricated by a self-aligned process.
The RESURF (REduced SURface Field) structure is attractive to achieve high breakdown voltage in the lateral MOSFETs.
Device Fabrication The structures of multi-RESURF MOSFETs fabricated in this study are shown in Fig. 1.
The SiO2 mask was patterned by reactive ion etching (RIE) with a CF4-H2 chemistry.
In order to reduce the on-resistance, the double RESURF structure is more attractive than the buried-p RESURF structure.

The structure and methanol sensing properties of these fibers were investigated.
Pure ZnO diffraction peaks match well with those given by the JCPDS card No.36-1451 for the hexagonal wurtzite structure.
The SnO2-ZnO nanofibers are in the polycrystalline structure with two phases of tetragonal rutile SnO2 (JCPDS 41-1445) and hexagonal wurtzite ZnO (JCPDS 36-1451) structure.
We also can see from the inset of Fig. 2c that the surface of each nanofiber presents a porous rough structure.
In addition, the excellent sensing properties described here can not be separated from 1D nanofiber structures, such as the high surface-to-volume ratios and the rough porous structure, which increase the active adsorption center and easily enable analyte molecules to adsorb onto the surfaces of nanofibers.

Effect of Glycerol on the Self-Assembly of P123 in a Room-Temperature Ionic Liquid [Bmim]PF6 Xiaonan Li a, Meishan Pei * b, Luyan Wang c and Li Wang d School of Chemistry and Chemical Engineering, University of Jinan, Jinan, China alxnyxw@163.com, bpeims2000@126.com, cchm_wangly@163.com, dwlpp887@sina.com Keywords: P123; ionic liquid; glycerol; lyotropic liquid crystal; SAXS Abstract.
The phase structure at P123/[Bmim]PF6 ratio of 1:1.
The phase structure at P123/[Bmim]PF6 ratios of 1:2 and 1:3.
The hexagonal phase structure of ternary system in region II.
The SAXS measurements indicate that the samples are all of hexagonal structure.

Performance of Ni-Mo Sulfated Nanozirconia Catalyst for Conversion of Waste Cooking Oil into Biofuel via Hydrocracking Process Arniz Hanifa1,a, Asma Nadia1,b, Wahyu Dita Saputri2,c, Akhmad Syoufian1,d and Karna Wijaya1,e* 1Departement of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia 2Research Center for Physics, Indonesian Institute of Sciences (LIPI), Tangerang Selatan 15314, Indonesia aarniz.hanifa@mail.ugm.ac.id, basmanadia@mail.ugm.ac.id, cwahy040@lipi.go.id, dakhmadsyoufian@ugm.ac.id, ekarnawijaya@ugm.ac.id Keywords: NiMo-SZ, sulfated zirconia, hydrocracking, conversion, cooking oil Abstract.
The increase in the total acidity value due to the impregnation of the sulfate ion can be inferred from two things, namely the formation of the Brønsted acid sites of the hydroxyl group bridging two Zr atoms in the SZ structure and the formation of the Lewis acid sites of the low coordinated Zr4+ ion [11].
Indonesian Journal of Chemistry, 5(3), 261-268. https://doi.org/10.22146/ijc.21801 [10] Patel, A., Brahmkhatri, V., & Singh, N. (2013).
Oriental Journal of Chemistry, 34(3), 1559-1564. https://doi.org/10.13005/ojc/340348 [12] Sohn, J.R., & Seo, D.H. (2003).
Materials Chemistry and Physics, 213, 548-555. https://doi.org/10.1016/j.matchemphys.2018.03.055 [14] Ma, Z., Meng, X., Liu, N., & Shi, L. (2018).

In order to most efficiently take advantage of the plasma-specific chemistries and physical phenomena of non-equilibrium plasmas, it is essential to understand the relationship between process parameters and material properties.
Plasma modification of porous structures for formation of composite materials. 
Chemistry of materials, 13(9), 2749-2752
Reaction chemistry in the afterglow of an oxygen−helium, atmospheric-pressure plasma.
The Journal of Physical Chemistry A, 104(34), 8027-803

SALIM Rosliza1,e and RAZALI Azaima1,f* 1Department of Chemistry, Kulliyyah of Science, IIUM, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang. 2Department of Marine Science, Kulliyyah of Science, IIUM, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang.
Graphene oxide (GO) a subset material of graphene has gained numerous attention due to its abundance of active oxygen-based functional groups including carboxylic, carbonyl, epoxy, or hydroxyl groups around their structure [7]⁠.
Hussain, in: Analytical Applications of Functionalized Magnetic Nanoparticles, edited by Chaudhery Mustansar Hussain, chapter 9, The Royal Society of Chemistry (2021)
Food Additives & Contaminants: Part A: Chemistry, Analysis, Control, Exposure & Risk Assessment, 2019, 36(5): 674–711
Journal Physical Chemistry Solids, 2018, 120: 161–166