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Development of green chemistry is imperative to decrease the pollution of surfactants.
In the curves of ZnAl(SDS)-LDH (Fig. 2a) and MgFe(SDS)-LDH (Fig. 2b) before adsorption of CTAB, the rapid mass loss at the higher temperature range (150-350 ℃) stems from the collapse of the crystalline structure resulting from dehydroxylation of the host layers in the LDH and decomposition of the alkyl chain, whereas decomposition of the sulfuric group is responsible for the behavior observed between 400 and 600 ℃.
The weight loss temperature of ZnAl(SDS)-LDH (Fig. 2c) and MgFe(SDS)-LDH (Fig. 2d) after adsorption of CTAB corresponding to the collapse of the crystalline structure all shift to higher temperature due to the higher thermal stability of CTAB.
[2] Chen CP, Gunawan P, J Mater Chem 21:1218 (2011) [3] Koilraj P, Srinivasan K, Ind Eng Chem Res 50:6943 (2011) [4] Qiu L, Chen W, Qu B, Polymer 47:922 (2006) [5] Valente JS, Sanchez-Cant M, Lima E, Figueras F, Chem Mater 21:5809 (2009) [6] Bao YZ, Cong LF, Huang ZM, etal, J Mater Sci 43:390, doi:10.1007/s10853-007-2100-1 (2008) [7] Lv FZ, Wu YY, Zhang YH, etal, J Mater Sci 47:2033, doi:10.1007/s10853-011-6003-9 (2012) [8] Goh K, Lim TT, Dong Z, Water Res 42:1343 (2008) [9] Li PG, Lv FZ, Xu ZX, etal, in: Functions of surfactants in the one-step synthesis of surfactant-intercalated LDHs, J Mater Sci, doi: 10.1007/s10853-013-7337-2 (2013) [10] Lv FZ, Wu YY, Zhang YH, etal, in: Structure and magnetic properties of soft organic ZnAl-LDH/polyimide electromagnetic shielding composites, J Mater Sci, 47:2033, doi: 10.1007/s10853-011-6003-9 (2012)

Studies on the oxidation states of copper ion in blue silicate glass prepared from rice husk Radchada Buntem1,a*, Kamchai Treechairusme2,b and Kamolwan1,c Samkongngam1 1 Department of Chemistry, Faculty of Science, Silpakorn University,Nakhon Pathom 73000,Thailand 2 Department of Physics, Faculty of Science, Silpakorn University,Nakhon Pathom 73000, Thailand aradchadab@yahoo.com, bkamchai@su.ac.th, ckamolwan1505@gmail.com Keywords: Copper doped glass, silicate glass, coordination information Abstract.
The color depends strongly on electronic structure of the ion as well as the composition and the structure of the glass matrix, which is the local site of the transition metal ions [3].
Wenger, Local structure and redox state of copper in tellurite glasses, J.

And p–n heterojunctions of different structures have been successfully constructed [5].
Jhin-Wei, C., Nano-Structured ZnSe/CIS Heterojunction Solar Cells with ZnSe/ZnO Coaxial Nanowires, Journal of the Electrochemical Society. 158 (2011)
Y., Surface induced negative photoconductivity in p-type ZnSe:Bi nanowires and their nano-optoelectronic applications, Journal of Materials Chemistry, 21 (2011) 6736
Yang, C., Rational growth of branched and hyperbranched nanowire structures, Nano Letters, 4 (2004) 871

Synthesis and characterisation of ZnO nanoparticles for production of antimicrobial textiles Nassara Keawkhong1,a, Lertnarong Sripanom1,b, Netnapit Kaewchuay1,c and Siriwan Teepoo1,d,* 1Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathumthani 12110 aann999@windowslivw.com, blertnarong@hotmail.co.th, cjnetnapit@gmail.com, d,*siriwan@mail.rmutt.ac.th Keywords: ZnO nanoparticle, Precipitation method, Antibacterial, Textiles Abstract In this paper, the synthesis and characterisation of ZnO nanoparticles have been carried out for textiles applications.
The result was shown in Fig. 1d The dominant peaks: 2θ° = 32, 35, 36, 48, 57, 63, 66, 68 and 69 match to the XRD JCPDS of ZnO which indicated the formation of pure wurtzite structure of ZnO nanoparticles.
For UV-Visible and XRD results, they indicated the formation of pure wurtzite structure of ZnO nanoparticles.
Montazer, A review on the application of inorganic nano-structured materials in the modification of textiles: Focus on anti-microbial properties, Colloids Surf., B. 79 (2010) 5–18

Facile Synthesis and Photocatalytic Properities of PbS Quantum Dots / Boron and Nitrogen co-doped TiO2 Transparent Photocatalyst Emulsion Haiying Wei1,a*, Yunping Bai2,b, Huayan Zhang2,c ,Zexin Liu2, Tiantian Li2, Hanshuang Niu2, Ling Li 2* , Wenming Zhang2*，Xiaowei Li2 1 College of Chemistry and Environmental Science, Hebei University; Baoding 071002, China 2 Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China asnake3cn@163.com,bbaiyunping123@163.com,czhanghy4321@163.com Keywords: PbS quantum dots; Boron and Nitrogen co-doped TiO2; photocatalytic emulsion; complexation-controlled hydrolysis method Abstract.
The photocatalytic activity of TiO2 combined with quantum dots semiconductors, including CdS, CdSe, PbS, PbSe, etc., has been commonly researched [3-5].At the same time, some researchers have conducted a number of studies about Boron and Nitrogen co-doped nano-TiO2 photocatalyst properties and its structure change mechanism [6].
Compared to pure TiO2, B/N codoped TiO2 lead to the formation of Ti-B-N-Ti, Ti-N-B-Ti, and Ti-N-B-O structures which could significantly decrease the band gap and the effective absorption range is extended, and PbS/TiO2 composite also reduce the band gap and accelerate the charge separation.
The reason is that TiO2 coupling with PbS quantum dots has a more narrow band gap between 0.8 eV and 3.2eV compared to pure TiO2, and Boron ion and Nitrogen ion co-doping replaces the oxygen elements on the surface of TiO2 and changes part of the lattice structure of TiO2.

Professor Mehta has been pointed out in the second session of the durability of concrete international academic conference in 1991: “In the world today, according to the descending order of the importance, the reasons for the damage of the concrete are as follows: steel corrosion (penetration of chloride ion and carbonation), freezing and thawing damage, the physical chemistry erosion of the environment.”
So it could greatly delay the damage of passivating film for the invasion of cholride ions and improve the durability of the structure markedly. 3.
It meant that as the reinforcement corrosion is retarded, the durability of the structure is improved.
Overall, painting modified organsilicone waterproofing agent on the surface of concrete can not only improve the surface quality, but also improve the durability of concrete and extend the life span of armoured concrete structures.

And according to the perceptual map obtained by DANA software, the effective strategies to control chromium contaminants in the water cycle is to improve environmental protection legislation, optimize the industrial structure and layout, adjust the discharge coefficient, develop the green recycling economy, install sewage separation facilities, increase public participation enthusiasm and strengthen the research of chromium pollution.
Table 2 Perspective from analysts to get the optimal strategy Focus on content Main content ①Improve environmental protection legislation ②Optimal adjustment of industrial structure and industrial distribution ③Optimize the discharge coefficient; ④The development of green circular economy ⑤Municipal departments to install sewage separation equipment ⑥Increase public participation enthusiasm ⑦To strengthen chromium pollution prevention research ①State Environmental Protection Administration to develop normative documents. ②Optimal adjustment of industrial structure, industrial layout, and optimize the discharge coefficient. ③Scientific research design environmental classification of chromium-containing pollutants; ④The Ministry of Industry and Information Technology to receive excessive use of chromium-containing substances surcharge; ⑤Professional associations to develop a general rule of corporate decision-makers and technical personnel engaged in the production of chromium-containing
[7] Shugui Dai.Environmental chemistry [M].

System Structure The architecture and the picture of the whole system are shown in Figure.1.
Figure.2 The structure diagram of motor controlling module The Design of Temperature Controlling Module.
Figure.3 The structure diagram of temperature controlling module After many rounds of temperature controlling experiments, we concluded that the accuracy of temperature controlling achieved was about ± 2oC and the maximum temperature of the sample was about 95oC.
Clinical Chemistry. 53(2007) 104-110

Adsorption of nickel and cobalt ions on magnesium silicate Hua Yanga, Haizeng Wangb School of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China axueyiyang10@126.com, bhaizwang@ouc.edu.cn Keywords: Magnesium Silicate, Nickel Ions, Cobalt Ions, Adsorption.
The unique structure of silicon-oxygen makes insetting metal ions move and be replaced with other cations, therefore, silicate minerals have great potential in adsorption and ion exchanges[5].
Surface area and pore structure analysis Nitrogen adsorption/desorption isotherm was presented in Fig. 1.
The hysteresis loop indicated the surface of magnesium silicate possessed porous structure.

These peaks correspond to the tetragonal structure of CuCr2O4, as documented in the ICDD PDF database No 00-034-0424.
Tohamy, Graphene’s Structure, Synthesis, and Characterization; a brief review, Egypt.
Chem., 62 (Special Issue (Part 2) Innovation in Chemistry) (2019) 593–608 doi: 10.21608/EJCHEM.2019.15173.1919
Yang, Novel Band Structures and Transport Properties from Graphene Nanoribbons with Armchair Edges, J.
Nitrogen doping effects on the structure of graphene.