Article
Materials Science, Ceramics
Reece N. Oosterbeek, Kalliope Margaronis, Xiang C. Zhang, Serena M. Best, Ruth E. Cameron
Summary: Phosphate glasses for bioresorbable implants exhibit varying dissolution rates based on composition, with a proposed new mechanism involving a two-stage dissolution process influenced by lower Ca concentration and solution pH. This new mechanism suggests an initial diffusion-controlled formation of a conversion layer, followed by rate-limiting layer dissolution reactions once the layer is stabilized. These findings provide insight into the dissolution mechanisms of P2O5-CaO-Na2O glass, particularly regarding the transition between the two dissolution stages.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Leila Fathyunes, Vida Khalili
Summary: This study focuses on the development of calcium phosphate/nano-sized silica composite coatings using one-step electrochemical deposition combined with ultrasonic irradiation. Various analytical techniques were employed to evaluate the morphology and composition of the coatings, as well as their in vitro performance. The results showed that the presence of nano-sized silica particles had a positive impact on surface morphology and cell adhesion and proliferation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Elisa Boanini, Massimo Gazzano, Katia Rubini, Paolo P. Mazzeo, Adriana Bigi
Summary: The study investigated the substitution of strontium for calcium in alpha-CaHPO4 and beta-SrHPO4, as well as the influence of synthesis methods on the structures. The results showed that strontium substitution in alpha-CaHPO4 can reach up to 100%, while in beta-SrHPO4 it is limited to about 20%. Additionally, powder X-ray analysis revealed that beta-SrHPO4 crystallizes with a monoclinic cell in the space group P21/c.
CERAMICS INTERNATIONAL
(2021)
Review
Biochemistry & Molecular Biology
Ahmed Salama
Summary: Researchers are increasingly focusing on the development of unique materials from sustainable and renewable resources, with chitosan and its derivatives being versatile candidates for preparing attractive materials. Various preparation strategies for chitosan/calcium phosphate composites have been discussed and are widely applied in the biomedical and environmental fields.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Guan-Yin Zhu, Ya-Hui Liu, Wei Liu, Xin-Qi Huang, Bo Zhang, Zi-Li Zheng, Xin Wei, Jia-Zhuang Xu, Zhi-He Zhao
Summary: The study utilized surface-directed epitaxial crystallization to construct a specific nano-topographical structure on a poly(epsilon-caprolactone) substrate, enhancing the formation of the CaP layer. Experimental results demonstrated a significant enhancement in osteogenic differentiation and proliferation of bone marrow mesenchymal stromal cells on the biomineralized nano-topological surface, showing potential for designing bone repair scaffolds.
Article
Materials Science, Biomaterials
Ji Won Baek, Ki Su Kim, Ho Park, Beom-Su Kim
Summary: In this study, a porous scaffold was prepared using biodegradable polymers and hydroxyapatite extracted from marine organisms for bone tissue regeneration. The scaffold exhibited excellent morphology and physicochemical properties, with superior cell adhesion, proliferation, and viability compared to scaffolds made from polymers alone. In vivo experiments confirmed enhanced bone regeneration with the use of the scaffold.
BIOMATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yuki Sugiura, Kodai Niitsu, Yasuko Saito, Takashi Endo, Masanori Horie
Summary: In this study, Na2SiO3 was introduced as the silica source for the one-pot inorganic synthesis method to fabricate silica-doped octacalcium phosphate (OCP), replacing the use of organic silica materials. Silica was intercalated into the OCP unit lattice, forming a layer-by-layer structure of apatite and silica. Additionally, both silica-doped hydroxyapatite and carbonate apatite were fabricated by immersing the silica-doped OCP into suitable solutions through one-step inorganic processes.
Article
Chemistry, Physical
Keunyoung Lee, Wonseok Yang, Eunji Pyo, Hyebin Choi, Yeona Cha, Seonhong Lee, Chung Soo Kim, Dong-Kwon Lim, Ki-Young Kwon
Summary: A novel oxygen evolution reaction catalyst composed of cobalt-calcium phosphate and reduced graphene oxide demonstrated enhanced catalytic activity under neutral conditions. The synergistic interaction between cobalt-calcium phosphate and electric conducting graphene sheets is the key factor for the enhanced OER catalytic activity.
Article
Engineering, Chemical
Yuxin Liu, Ziyi Xu, Chuanjin Xia, Baowei Hu, Wentao Zeng, Yuling Zhu
Summary: In this study, three calcium phosphate (CaP) chemicals were synthesized using mussel shells and rice bran. CaP-5 and CaP-2.5 demonstrated significantly better removal performance of UO22+ compared to CaP-N. The adsorption mechanisms were investigated, and it was found that at pH 3.0 or 4.0, a new substance Ca(UO2)(2)(PO4)(2)(H2O)(6) was formed, resulting in high U(VI) removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Filiz Karakus Basak, Ersin Kayahan
Summary: The study successfully synthesized silicon-calcium phosphate composite nanoparticles by heat treatment of thermally oxidized porous silicon and spin coating with hydroxyapatite precursor solution. The unique method enabled the synthesis of ultra-pure spherical nanoparticles with an average hydrodynamic diameter of 120 nm, suitable for various biomedical applications through customizable properties.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Seeni Meera Kamal Mohamed, Rajavelu Murali Sankar, Manikantan Syamala Kiran, Sellamuthu N. Jaisankar, Barbara Milow, Asit Baran Mandal
Summary: Ionogels containing bio-ionic liquids are developed for biomolecule encapsulation within the stability of silica-aerogels. The use of ionic liquids favors the formation of interconnected silica network structure, benefiting various applications. The gel samples exhibited cell viabilities in cytotoxicity assay studies, suggesting their potential for encapsulating biological molecules with conformational stability.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Yuanfei Liu, Sunqi Shang, Wanjiao Wei, Yuefei Zhang, Wei Chen, Sheng Tang
Summary: In this study, an IL modified COF bonded silica composite material (IL-COF@SiO2) was successfully synthesized using a deep eutectic solvent as the reaction medium instead of organic solvent. The IL-COF@SiO2 composite material combines the separation ability of COF and the mass transfer function of porous silica. The introduction of IL provides better separation performance, demonstrating potential as a versatile liquid chromatographic separation material.
ANALYTICA CHIMICA ACTA
(2023)
Article
Food Science & Technology
Yunna Wang, Xin Cui, Yang Li, Shiran Wang, Guosen Yan, Liebing Zhang, Yan Li
Summary: This study investigated the effects of different pH levels and ionic strength in calcium on the stability and aeration characteristics of dairy emulsions. The results showed that increasing the pH value from 6.5 to 7.0 enhanced the stability and aeration characteristics, with the optimal range being pH 6.8 to 7.0 and a concentration of free calcium ions (Ca2+) of 2.94 to 3.22 mM. However, when the addition of CaCl2 increased to 2.00 mM (free Ca2+ strength > 4.11 mM) at pH 6.8 and 7.0, the stability and aeration characteristics significantly decreased, leading to detrimental effects on the quality of the dairy emulsions.
Article
Biochemistry & Molecular Biology
Yu-Hsun Chiu, I-Cheng Chen, Chen-Ying Su, Hsin-Hua Tsai, Tai-Horng Young, Hsu-Wei Fang
Summary: The demand for bone grafting is increasing as the global population ages. This study aims to develop ideal injectable implants from biomaterials for minimally invasive surgery. The developed injectable paste showed good handling properties, biocompatibility, and mechanical strength.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Biomedical
Olof Eskilson, Elisa Zattarin, Linn Berglund, Kristiina Oksman, Kristina Hanna, Jonathan Rakar, Petter Sivler, Marten Skog, Ivana Rinklake, Rozalin Shamasha, Zeljana Sotra, Annika Starkenberg, Magnus Oden, Emanuel Wiman, Hazem Khalaf, Torbjorn Bengtsson, Johan P. E. Junker, Robert Selegard, Emma M. Bjork, Daniel Aili
Summary: The skin is the largest organ of the human body, and wounds can have severe consequences, such as morbidity and mortality. Infections in wounds are common and can delay healing and lead to sepsis. This study presents a novel strategy for pH sensing in wound dressings made from bacterial nanocellulose, which can facilitate early detection of infection. The pH-responsive nanocomposites showed excellent properties as wound dressings and could be used for encapsulation and release of bioactive compounds for the treatment of difficult-to-heal wounds, promoting the development of innovative wound care materials.
MATERIALS TODAY BIO
(2023)