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Quantitative Deviation of Nanocrystals Using the RIR Method in X-ray Diffraction (XRD). NANOMATERIALS 2022; 12:nano12142320. [PMID: 35889545 PMCID: PMC9325253 DOI: 10.3390/nano12142320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 11/17/2022]
Abstract
The reference intensity ratio (RIR) method, using X-ray diffraction (XRD), is considered one most of the rapid and convenient approaches for phase quantification in multi-phase mixture, in which nanocrystals are commonly contained in a mixture and cause a broadening of the diffraction peak, while another broadening factor, instrumental broadening, does not attract enough attention in related quantitative analysis. Despite the specimen consisting of 50 wt.% TiO2 nanomaterials (nano-TiO2) and 50 wt.% microscale ZnO powder, the nano-TiO2 quantitative result changes from 56.53% to 43.33% that occur as a variation of instrumental broadening are caused by divergence slit adjustment. This deviation could be accounted through a mathematical model that involves instrumental broadening. The research in this paper might provide a useful guide for developing an approach to measure accuracy quantification in unknown multi-phase mixtures.
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Ibrahim MM. An efficient nano-adsorbent via surfactants/dual surfactants assisted ultrasonic co-precipitation method for sono-removal of monoazo and diazo anionic dyes. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.08.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kumar RS, Narukulla R, Sharma T. Comparative Effectiveness of Thermal Stability and Rheological Properties of Nanofluid of SiO 2–TiO 2 Nanocomposites for Oil Field Applications. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ravi Shankar Kumar
- Enhanced Oil Recovery Laboratory, Department of Petroleum Engineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, Uttar Pradesh 229304, India
| | - Ramesh Narukulla
- Enhanced Oil Recovery Laboratory, Department of Petroleum Engineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, Uttar Pradesh 229304, India
- Department of Chemistry, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, Uttar Pradesh 229304, India
| | - Tushar Sharma
- Enhanced Oil Recovery Laboratory, Department of Petroleum Engineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, Uttar Pradesh 229304, India
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Filho E, Brito E, Silva R, Streck L, Bohn F, Fonseca J. Superparamagnetic polyacrylamide/magnetite composite gels. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1774382] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ernani Filho
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brazil
| | - Elvis Brito
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brazil
| | - Rodolfo Silva
- Departamento de Física, Universidade Federal do Rio Grande do Norte Campus Universitário, Natal, RN, Brazil
| | - Letícia Streck
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brazil
| | - Felipe Bohn
- Departamento de Física, Universidade Federal do Rio Grande do Norte Campus Universitário, Natal, RN, Brazil
| | - José Fonseca
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brazil
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Kosmulski M. The pH dependent surface charging and points of zero charge. VIII. Update. Adv Colloid Interface Sci 2020; 275:102064. [PMID: 31757389 DOI: 10.1016/j.cis.2019.102064] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 12/28/2022]
Abstract
A critical review of the points of zero charge (PZC) obtained by potentiometric titration and of isoelectric points (IEP) obtained by electrokinetic measurements. The results from the recent literature are presented with experimental details (temperature, method, type of apparatus, etc.), and they are compared with the zero points of similar materials reported in older publications. Most studies of PZC and IEP reported in the recent papers were carried out for metal oxides and hydroxides, especially alumina, iron oxides, and titania, and the results are consistent with the PZC and IEP of similar materials reported in older literature, and summarized in previous reviews by the same author. Relatively few studies were carried out with less common materials, and IEP of (nominally) VO2 and BN have been reported for the 1st time.
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Isoshima K, Ueno T, Arai Y, Saito H, Chen P, Tsutsumi Y, Hanawa T, Wakabayashi N. The change of surface charge by lithium ion coating enhances protein adsorption on titanium. J Mech Behav Biomed Mater 2019; 100:103393. [PMID: 31450101 DOI: 10.1016/j.jmbbm.2019.103393] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 08/06/2019] [Accepted: 08/07/2019] [Indexed: 11/17/2022]
Abstract
Surface charge is one of the essential physicochemical properties of titanium surfaces for extracellular protein adsorption. Titanium surfaces are generally electronegatively charged at physiological pH. Typical cellular adhesive proteins and cell membranes are also negatively charged. Therefore, there are no direct electric interactions between proteins and titanium surfaces at physiological pH. The objective of this study was to determine how different electrical charges on titanium surfaces affect protein adsorption. Commercially pure grade-2 titanium disks, 19 mm in diameter and 1.5 mm in thickness, having acid-etched micro-roughed surfaces, were prepared. Electropositive charge was supplied by soaking in LiOH solution at concentrations of 0.05, 0.1, 0.25, 0.5, and 1.0 M. After LiOH treatment, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were performed. The zeta potential, isoelectric point, and wettability of titanium surfaces were measured. The adsorption levels of proteins, including albumin, laminin, and fibronectin, were evaluated. Osteoblastic cell attachment level was also determined. Incorporation of Li was detected in the oxide layer of titanium without surface morphological modification. The zeta potential was shifted up and the isoelectric point was increased from 3.94 to 5.63 by LiOH treatment. Long-term super-hydrophilicity was also obtained on Li-treated surfaces. The adsorption of albumin and laminin increased with increasing concentration of LiOH treatment solution, whereas fibronectin adsorption was highest upon treatment with 0.25 M. The osteoblastic cell attachment level was shown to be dependent on the amount of fibronectin adsorbed. In conclusion, LiOH treatment enhances biological adhesion on titanium with an increase in surface charge and hydrophilicity. This study suggests that modifying the surface charge provides a direct protein-to-materials interaction and the optimal application of Li should be investigated further.
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Affiliation(s)
- Keigo Isoshima
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takeshi Ueno
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Yuki Arai
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroki Saito
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Peng Chen
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yusuke Tsutsumi
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan; Corrosion Property Group, Analysis and Evaluation Field, Research Center for Structural Materials, National Institute for Materials Science (NIMS) , Ibaraki, Japan
| | - Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Noriyuki Wakabayashi
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Goncharuk O, Shipul O, Dyachenko A, Ischenko O, Andriyko L, Marynin A, Pakhlov E, Oranska O, Borysenko M. Silica-supported Ni and Co nanooxides: Colloidal properties and interactions with polar and nonpolar liquids. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Surface potential study of ceria/poly(sodium 4-styrenesulfonate) aqueous solution interface. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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