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Effects of different granularity control methods on morphology, structure and electrochemical performance of LiFePO4/C Cheng Lu1,a, Lin Chen1,b, Yunbo Chen1, Yijie Gu1,2, Meng Wang1, Lingli Zuo1, Hongquan Liu2, Yanmin Wang2, Xianfu Sun3 1Advanced Manufacture Technology Center of China Academy of Machinery Science Technology, Beijing 100083, China 2 College of Material Science and Technology, Shandong University of Science and Technology, Qingdao 266510, China 3Shandong Xizhong Electronics and Technology Co., LTD, Zaozhuang 277000, China aluchok@163.com, bchenxxlin@126.com Keywords: lithium-ion battery; cathode material; LiFePO4; granularity control Abstract.
The morphology, structure and electrochemical properties of the materials were characterized.
Tap density was tasted using tap density tester(ZS-201, China).The structure and phase were identified by Rigaku D/MAX 2500PC X-ray diffraction (XRD) using Cu-Kα radiation, 30KV tube voltage, tube current of 100mA, the scanning range from 10° to 90° The surface microtopography was investigated by Field emission scanning electron microscope (FESEM).
Particle size distribution curves of (a)LiFePO4/C, (b)airflow crushed LiFePO4/C and (c) mechanical crushed LiFePO4/C As can be seen form the XRD patterns of the materials, Fig. 2(a) shows a perfect crystallinity of the synthesized material reveal a single-phase LiFePO4/C with an ordered olivine structure indexed by (JCPDS No. 83-2092) [3].
Fig.4 Charge and discharge curves of (a) LiFePO4/C, (b)Mechanical crushed LiFePO4/C and (c)Airflow crushed LiFePO4/C at different current rates A good carbon coating can effectively increase the electrode conductivity, improve the surface chemistry of the active material, and protect the electrode from direct contact with electrolyte, leading to enhanced cycle life of the batteries [4,5].

Due to their large surface area and porous structure, they have been used extensively for the removal of pollutants [8].
Further magnification reveals its rough and porous structure, both of which make for favorable adsorption capabilities.
In Journal of Solid State Chemistry (Vol. 306). https://doi.org/10.1016/j.jssc.2021.122709 [10] Wang, Y., Wang, K., Lin, J., Xiao, L., & Wang, X. (2020).
Coordination Chemistry Reviews. 461. 214496. 10.1016/j.ccr.2022. 214496
Industrial and Engineering Chemistry Research, 44(17), 6692–6700. https://doi.org/10.1021/ie050145k

Mechanical Properties of Hydroxyapatite/La Prepared by a Solid Chemical Reaction Method Atiek Rostika Noviyanti1,a*, Hendri Setiawan1,b, Engela Evy Ernawati1,c, Haryono1,d and Risdiana2,e 1Physical-Inorganic Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl.
The structure, morphology and mechanical strength of HA/La were characterized by XRD, SEM and Vicker Hardness, respectively.
Likewise, the IR spectra are similar to each other, which shows the formation of the HA structure, indicated by the presence of the -OH and PO43- groups.
The mechanical loading of the structure is greatly influenced by preferential crystal orientation.
All HA samples adopt the P 63/m space group, indicating that the La concentration is still accommodated by the HA structure, with partial replacement of Ca ions by La.

The surface and sectional structures of membranes were observed by scanning electron microscope (SEM).
The surface and cross-sectional structures of the membranes were examined by scanning electron microscopy (SEM; S-4700, Japan).
The modified membrane has the same with epidermis and the internal structure as that of PVDF membrane.
PVDF000 PVDF330 PVDF303 PVDF311 Fig.7 SEM micrographs of membranes cross-section Ultrafiltration membrane pore structure: Ultrafiltration membrane pore structure images are shown in Figure 8.
Frontiers of Chemistry, 4,432-439(2008) [2] Boor S.

SPS Temperature Influence on the Composition, Structure and Magnetic Properties of Hematite Ceramics Ognev Alexey1,a, Samardak Alexander1,3,b, Pechnikov Vladimir1,c and Papynov Evgeniy1,2,d* 1Far Eastern Federal University, Vladivostok, 690090, Russia 2Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia 3National Research South Ural State University, Chelyabinsk, 454080, Russia aognev.av@dvfu.ru, bsamardak.as@dvfu.ru, cpech_vs@mail.ru, dpapynov@mail.ru Keywords: ceramics, hematite, spark plasma sintering, magnetic properties Abstract.
In this regard, the work investigated the effect of the IPA temperature on the structure, composition and magnetic properties of hematite α-Fe2O3 of high purity 99.995%.
Conclusions In this work, the effect of temperature (in the range of 800-100°C) of SPS on the composition, structure and magnetic properties of high-purity hematite is estimated.
The results obtained are of scientific significance for revealing the effect of SPS conditions on the composition, structure, and magnetic properties of high-purity hematite.
Equipment of the Center of Collective Usage of the Far Eastern Federal University, registration No. 200556 (Vladivostok). and common use centers “Far Eastern Center for Structural Research” (Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok).

Results and Discussion XRD analysis was performed to investigate the crystal structure of the product.
This indicates that the hierarchical structures and twin crystal are present in coral-shaped Au nanostructures.
Astruc, Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology, Chem.
El-Sayed, Chemistry and properties of nanocrystals of different shapes, Chem.
Skrabalak, Shape-controlled synthesis of metal nanocrystals: simple chemistry meets complex physics, Angew.

Adsorption Behavior of Rhodamine B and Methylene Blue by Chemical Modified Cornstalk Biomass Qilin CAO1,a, Yuan-meng ZHAO2,b, Xiang-yan WEI3,c and Fang LUO4,d* 1Changchun Normal University, College of Chemistry, Changchun, 130032, China 1Duoluoshan Sapphire Rare Metal Co.
Ltd. of Zhaoqing, Sihui, 526200, China 2,3,4Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, 130024, China aemail: caoql243@163.com bemail: zhaoym243@nenu.edu.cn cemail: weixy436@nenu.edu.cn demail: luof746@nenu.edu.cn *Corresponding author Keywords: Adsorption, Cornstalk, Methylene blue, Rhodamine B, Kinetics, Equilibrium.
Cellulose cornstalk as a biosorbent exhibits macroporous network structure, high surface area, good mechanical stability and various functional groups (hydroxyl and carboxyl).
Results and Discussion Adsorption Characterization SEM analysis is a useful tool for analysis of the structure and surface morphology of adsorbents.
Such as charge of adsorbent surface, the degree of ionization of the material present in the solution, the dissociation of functional groups on the action sites of the adsorbent and the solution dye chemistry.

Using Granulate Composites with Calcined Phosphogypsum and PET Additive in Asphalting Pavel Razgovorov1,a, Aleksey Ignatyev1,b*, Valerij Gotovtsev1,c and Elena Vlasova2,d 1Yaroslavl State Technical University, Moskovskiy prospekt 88, Yaroslavl, 150023, Russian Federation 2Ivanovo State University of Chemistry and Technology, Sheremetievskiy prospekt 7, Ivanovo, 153000, Russian Federation adrpbr1@gmail.ru, bignatyevaa@ystu.ru, cgotovtsev_vm@mail.ru, dvea1980@mail.ru Keywords: Phosphogypsum, polyethylene terephthalate, calcination, dispersity and crystallite size, surface condition, granular composites, asphalt work.
The resulting composite incorporating PG, crushed stone, bitumen, and PET for asphalting (Fig. 5, c) is characterized by the absence in the formed plastic structure of meso- and macropores, which are clearly visible on the non-calcined surface (Fig. 5, a).
Structure of asphalt composite (Fig. 5, c) is fragmentally identified with that for the monolithic block, in sharp contrast to the original picture (Fig. 5, a) where the number of pores ≤ 1-2 μm in size within ≈ 100 μm field of view is difficult to calculate. 20 μm 20 μm 20 μm a b c Fig. 5.
Series Chemistry, Biology, Ecology, 12-3 (2012) 45-47
Ishalina, Basics of chemistry and technology of polyethylene terephthalate production, St.

Results and Discussion The structures for the solid solutions were identified by means of powder X-ray diffraction (XRD) on an XRD-6000 Shimadzu XRD diffractometer with Cu Kα radiation at room temperature.
Akhavan, The Chemistry of Explosives.
The Royal Society of Chemistry, Cambridge, U.K., 1998, p. 103
Su, Materials Chemistry and Physics 69 (2001) 236–240
Charge structure and charging method of rock-breaking charge pillar.

Study of Chromatographic Properties of Catecholamines and their Acidic Metabolites Using Novel Molecularly Imprinted Polymers as Stationary Phases Antons Podjavaa*, Artūrs Šilaksb Laboratory of Chromatography and Mass Spectrometry, Department of Chemistry, Academic Center of Natural Sciences, University of Latvia, Riga, LV-1004, Latvia aantonpodjava@gmail.com, basilaks@gmail.com Keywords: catecholamines, catecholamine metabolites, novel molecularly imprinted sorbents, stationary phase Abstract.
The most prominent example of such technology is molecularly imprinted polymers (MIPs) with specific binding sites embedded into their structure.
Imprinting factor values are higher for compounds that have more hydroxyl groups in their structure.
Bertholf (Eds.), Chromatographic Methods in Clinical Chemistry and Toxicology, John Wiley & Sons, Singapore, 2007, pp. 101-126
Analytical Chemistry, 92(13) (2020) 9072-9078