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  1. Article ; Online: Sol-Gel Synthesis of New TiO

    El Mouchtari, El Mountassir / El Mersly, Lekbira / Belkodia, Kaltoum / Piram, Anne / Lebarillier, Stéphanie / Briche, Samir / Rafqah, Salah / Wong-Wah-Chung, Pascal

    Toxics

    2023  Volume 11, Issue 4

    Abstract: Many approaches have been investigated to eliminate pharmaceuticals in wastewater treatment plants during the last decades. However, a lack of sustainable and efficient solutions exists for the removal of hormones by advanced oxidation processes. The aim ...

    Abstract Many approaches have been investigated to eliminate pharmaceuticals in wastewater treatment plants during the last decades. However, a lack of sustainable and efficient solutions exists for the removal of hormones by advanced oxidation processes. The aim of this study was to synthesize and test new photoactive bio composites for the elimination of these molecules in wastewater effluents. The new materials were obtained from the activated carbon (AC) of
    Language English
    Publishing date 2023-03-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2733883-6
    ISSN 2305-6304 ; 2305-6304
    ISSN (online) 2305-6304
    ISSN 2305-6304
    DOI 10.3390/toxics11040299
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  2. Article ; Online: Transparent Self-Cleaning Coatings Based on Colorless Polyimide/Silica Sol Nanocomposite.

    Choi, Yun-Je / Ko, Ju-Hee / Jin, Seung-Won / An, Hyun-Soo / Kim, Dam-Bi / Yoon, Kang-Hoon / Kim, Hyun-Woo / Chung, Chan-Moon

    Polymers

    2021  Volume 13, Issue 23

    Abstract: We herein report transparent self-cleaning coatings based on polyimide-fluorinated silica sol ... PIFSS) nanocomposite. Polyamic acid-silica sol (PASS) suspensions were synthesized by adding four ... different amounts of a silica sol suspension to each end-capped polyamic acid solution. The PASS suspensions ...

    Abstract We herein report transparent self-cleaning coatings based on polyimide-fluorinated silica sol (PIFSS) nanocomposite. Polyamic acid-silica sol (PASS) suspensions were synthesized by adding four different amounts of a silica sol suspension to each end-capped polyamic acid solution. The PASS suspensions were spin-coated on glass slides, thermally imidized and treated with triethoxy-1
    Language English
    Publishing date 2021-11-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym13234100
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  3. Article ; Online: Photovoltaic Performances of Dye-Sensitized Solar Cells Based on Modified Polybutadiene Matrix Electrolytes by Sol-Gel Process.

    Kim, Mi-Ra / Pham, Thanh Chung / Yang, Hyun-Seock / Park, Sung Heum / Lee, Songyi

    Polymers

    2022  Volume 14, Issue 12

    Abstract: ... by cross-linking the reaction of polybutadiene with siloxane groups as a substitute sol-gel process. A DSSC device ...

    Abstract A new type of polymer matrix electrolyte based on modified polybutadiene (modified PB) was developed for dye-sensitized solar cells (DSSCs) to improve their stability. The modified PB was fabricated by cross-linking the reaction of polybutadiene with siloxane groups as a substitute sol-gel process. A DSSC device using the modified PB matrix electrolyte showed an open-circuit voltage of 0.64 V, a short-circuit current density of 15.00 mA/cm
    Language English
    Publishing date 2022-06-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym14122347
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  4. Article ; Online: Multiscale structural and rheological features of colloidal low-methoxyl pectin solutions and calcium-induced sol-gel transition.

    Huang, Ssu-Ting / Yang, Cheng-Hao / Lin, Peng-Ju / Su, Chien-You / Hua, Chi-Chung

    Physical chemistry chemical physics : PCCP

    2021  Volume 23, Issue 35, Page(s) 19269–19279

    Abstract: ... methoxyl (LM) pectin solutions and a representative pectin/calcium sol-gel sample were systematically ... colloidal aspect of LM pectin solutions and sol-gel transition, in contrast to the polymeric features ... extensively explored in previous studies. A highly uniform colloid-like, micron-sized agglomerate species was ...

    Abstract The multiscale structural and rheological features of a series of dilute and semidilute low-methoxyl (LM) pectin solutions and a representative pectin/calcium sol-gel sample were systematically explored using a comprehensive combination of dynamic (DLS) and static light/X-ray scattering (SALS/SLS/SAXS), rheology, and microscopy (OM/SEM) characterizations. The study focused on the rarely explored colloidal aspect of LM pectin solutions and sol-gel transition, in contrast to the polymeric features extensively explored in previous studies. A highly uniform colloid-like, micron-sized agglomerate species was revealed in dilute solutions, with a progressively increased degree of flocculation in the semidilute regime (≥1.5 wt%). The agglomerate species in these solutions was resolved to be formed by random associations of individual pectin chains (
    Language English
    Publishing date 2021-09-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp02778f
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  5. Article ; Online: Sol-gel based synthesis and biological properties of zinc integrated nano bioglass ceramics for bone tissue regeneration.

    Paramita, Pragyan / Ramachandran, Murugesan / Narashiman, Srinivasan / Nagarajan, Selvamurugan / Sukumar, Dinesh Kumar / Chung, Tze-Wen / Ambigapathi, Moorthi

    Journal of materials science. Materials in medicine

    2021  Volume 32, Issue 1, Page(s) 5

    Abstract: ... genes expression. In view of these, the present study is focused on sol-gel synthesis and pysico ...

    Abstract Bone is a flexible and electro active tissue that is vulnerable to various traumatic injuries. The self-healing of damaged bone tissue towards reconstruction is limited due to the lack of proper niche compliances. Nevertheless, the classical grafting techniques like autograft/allograft for bone repair pose challenges like bacterial infections and donor-site morbidity with unsatisfactory outcomes. The use of appropriate biomaterial with osteogenic potential can meet these challenges. In this regard, bioactive glass ceramics is widely used as a bone filler or graft material because of its bonding affinity to bone leading towards bone reconstruction applications without the challenge of post implant infections. Hence, the current study is aimed at addressing this potentiality of zinc (Zn) for doped the bioglass at nano-scale advantages for bone tissue repair. Since, Zn has been demonstrated to have not only antibacterial property but also the stimulatory effect on osteoblasts differentiation, mineralization by enhancing the osteogenic genes expression. In view of these, the present study is focused on sol-gel synthesis and pysico-chemical characterization of Zinc-doped bioglass nanoparticles (Zn-nBGC) and also analyzing its biological implications. The surface morphological and physiochemical characterizations using SEM, EDX, FT-IR and XRD analysis has shown the increased surface area of Zn-nBGC particles providing a great platform for biomolecular interaction, cytocompatibility, cell proliferation and osteogenic differentiation. The obtaining hydroxy apatite groups have initiated in vitro mineralization towards osteogenic lineage formation. Zn has not only involved in enhancing cellular actions but also strengthen the ceramic nanoparticles towards antibacterial application. Hence the finding suggests a biomaterial synthesis of better biomaterial for bone tissue engineering application by preventing post-operative bacterial infection.
    MeSH term(s) Adsorption ; Animals ; Anti-Bacterial Agents/chemistry ; Biocompatible Materials ; Biofilms ; Bone Cements ; Bone Regeneration/drug effects ; Bone and Bones/metabolism ; Cell Differentiation ; Cell Proliferation ; Ceramics/chemistry ; Durapatite/chemistry ; Humans ; In Vitro Techniques ; Materials Testing ; Metal Nanoparticles/chemistry ; Mice ; Mice, Inbred C3H ; Nanostructures/chemistry ; Nanotechnology ; Osteoblasts/cytology ; Osteogenesis ; Phase Transition ; Regeneration ; Regenerative Medicine/methods ; Tissue Engineering/methods ; Tissue Scaffolds/chemistry ; Zinc/chemistry
    Chemical Substances Anti-Bacterial Agents ; Biocompatible Materials ; Bioglass ; Bone Cements ; Glass ceramics (85422-94-2) ; Durapatite (91D9GV0Z28) ; Zinc (J41CSQ7QDS)
    Language English
    Publishing date 2021-01-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1031752-1
    ISSN 1573-4838 ; 0957-4530
    ISSN (online) 1573-4838
    ISSN 0957-4530
    DOI 10.1007/s10856-020-06478-3
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3040: Show issues Location:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  6. Article ; Online: Study on strontium doped tricalcium silicate synthesized through sol-gel process.

    Liu, Wai-Ching / Hu, Chih-Chien / Tseng, Yuan-Yun / Sakthivel, Rajalakshmi / Fan, Kuei-Sheng / Wang, An-Ni / Wang, Yi-Min / Chung, Ren-Jei

    Materials science & engineering. C, Materials for biological applications

    2019  Volume 108, Page(s) 110431

    Abstract: We successfully synthesized a strontium-doped tricalcium silicate ( ... ...

    Abstract We successfully synthesized a strontium-doped tricalcium silicate (Sr
    MeSH term(s) Animals ; Bone Cements/chemical synthesis ; Bone Cements/chemistry ; Bone Cements/pharmacology ; Calcium Compounds/chemical synthesis ; Calcium Compounds/chemistry ; Calcium Compounds/pharmacology ; Cell Line ; Cell Proliferation/drug effects ; Materials Testing ; Mice ; Phase Transition ; Silicates/chemical synthesis ; Silicates/chemistry ; Silicates/pharmacology ; Strontium/chemistry ; Strontium/pharmacology
    Chemical Substances Bone Cements ; Calcium Compounds ; Silicates ; tricalcium silicate (404G39282C) ; Strontium (YZS2RPE8LE)
    Language English
    Publishing date 2019-11-14
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2012160-X
    ISSN 1873-0191 ; 0928-4931
    ISSN (online) 1873-0191
    ISSN 0928-4931
    DOI 10.1016/j.msec.2019.110431
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  7. Article ; Online: Transparent Self-Cleaning Coatings Based on Colorless Polyimide/Silica Sol Nanocomposite

    Yun-Je Choi / Ju-Hee Ko / Seung-Won Jin / Hyun-Soo An / Dam-Bi Kim / Kang-Hoon Yoon / Hyun-Woo Kim / Chan-Moon Chung

    Polymers, Vol 13, Iss 4100, p

    2021  Volume 4100

    Abstract: We herein report transparent self-cleaning coatings based on polyimide-fluorinated silica sol ... PIFSS) nanocomposite. Polyamic acid-silica sol (PASS) suspensions were synthesized by adding four ... different amounts of a silica sol suspension to each end-capped polyamic acid solution. The PASS suspensions ...

    Abstract We herein report transparent self-cleaning coatings based on polyimide-fluorinated silica sol (PIFSS) nanocomposite. Polyamic acid-silica sol (PASS) suspensions were synthesized by adding four different amounts of a silica sol suspension to each end-capped polyamic acid solution. The PASS suspensions were spin-coated on glass slides, thermally imidized and treated with triethoxy-1 H ,1 H ,2 H ,2 H -perfluorodecylsilane (TEFDS) to prepare PIFSS coatings. The PIFSS coatings showed high resistance to separation from glass substrates and thermal stability. Furthermore, the PIFSS coatings on the glass substrate could be cleanly removed using polar aprotic solvents and repeated coating was possible. As the amount of silica sol particles in the PIFSS coating was increased, the hydrophobic contact angle increased. Among them, PIFSS-10 and PIFSS-15 coatings showed nearly superhydrophobic contact angles (144° and 148°, respectively) and good self-cleaning property. It was confirmed by SEM and AFM studies that their hydrophobic and self-cleaning properties are due to uniform particle distribution and relatively high surface roughness. PIFSS-10 coating showed a high transmittance value (88%) at 550 nm and good self-cleaning property, therefore suitable as a transparent self-cleaning coating. The advantages of the coating are that the fabrication process is simple, and the substrate is reusable. The PIFSS coating is expected to be applied in solar cell panels, windows, lenses and safety goggles.
    Keywords self-cleaning ; transparent ; hydrophobic ; polyimide ; silica sol ; nanocomposite ; Organic chemistry ; QD241-441
    Subject code 620
    Language English
    Publishing date 2021-11-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Photovoltaic Performances of Dye-Sensitized Solar Cells Based on Modified Polybutadiene Matrix Electrolytes by Sol-Gel Process

    Mi-Ra Kim / Thanh Chung Pham / Hyun-Seock Yang / Sung Heum Park / Songyi Lee

    Polymers, Vol 14, Iss 2347, p

    2022  Volume 2347

    Abstract: ... by cross-linking the reaction of polybutadiene with siloxane groups as a substitute sol-gel process. A DSSC device ...

    Abstract A new type of polymer matrix electrolyte based on modified polybutadiene (modified PB) was developed for dye-sensitized solar cells (DSSCs) to improve their stability. The modified PB was fabricated by cross-linking the reaction of polybutadiene with siloxane groups as a substitute sol-gel process. A DSSC device using the modified PB matrix electrolyte showed an open-circuit voltage of 0.64 V, a short-circuit current density of 15.00 mA/cm 2 , and a fill factor of 0.58 under photointensity of 100 mW/cm 2 at AM 1.5, consequently leading to an overall solar energy conversion efficiency of 5.49%. The DSSC device using the modified PB matrix electrolyte improved the conductivity, and the charge transfer ability showed the outstanding stability of the device.
    Keywords polybutadiene ; dye-sensitized solar cells (DSSCs) ; polymer electrolyte ; sol-gel process ; Organic chemistry ; QD241-441
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Application of Wastewater Reuse with Photocatalyst Prepared by Sol-Gel Method and Its Kinetics on the Decomposition of Low Molecular Weight Pollutants.

    Chung, Jinwook / Chung, Seungjoon / Lee, Gyuyoung / Lee, Yong-Woo

    International journal of environmental research and public health

    2020  Volume 17, Issue 12

    Abstract: ... by sol-gel method under various amount of precursor and support, water to precursor ratio, pH, aging time ...

    Abstract The development of immobilized photocatalyst as a strategy for problematic electronics wastewater reuse is described in this study. The strategy was to perform separate rinsing, mostly consisting of low molecular weight compounds, and to decompose them with a simple process, based on the advanced oxidation process (AOP). Extensive studies were performed on the preparation conditions of immobilized photocatalysts by sol-gel method under various amount of precursor and support, water to precursor ratio, pH, aging time, and calcination conditions. The optimized preparation conditions were chosen by measuring removal efficiencies of isopropyl alcohol as a representative target compound with supportive SEM and XRD analyses. Removal efficiencies with photocatalyst and UV irradiation in synthetic wastewater simulating electronics wastewater were evaluated over time. Removal efficiencies of alcohol, acetone, ethanol, and acetaldehyde reached 97.2%, 71.2%, 99.0%, and 99.0%, respectively, in 2 h. Reaction constants of each compound were determined by fitting experimental data to the first order kinetic equation and the trial and error method with consecutive reaction pathway. As analysis results of reaction constants, UV with prepared photocatalyst was found to be effective and the decomposition of acetone was found to be the rate-determining step. The immobilized photocatalyst developed in this study would be useful for application of wastewater reuse with high removal efficiencies, mild preparation conditions, and mechanical stability.
    MeSH term(s) Catalysis ; Environmental Pollutants ; Kinetics ; Molecular Weight ; Titanium ; Waste Water
    Chemical Substances Environmental Pollutants ; Waste Water ; Titanium (D1JT611TNE)
    Language English
    Publishing date 2020-06-12
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1660-4601
    ISSN (online) 1660-4601
    DOI 10.3390/ijerph17124203
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  10. Article ; Online: Controlled Sol-Gel and Diversiform Nanostructure Transitions by Photoresponsive Molecular Switching of Tetraphenylethene- and Azobenzene-Functionalized Organogelators.

    Arumugaperumal, Reguram / Hua, Wei-Ling / Raghunath, Putikam / Lin, Ming-Chang / Chung, Wen-Sheng

    ACS applied materials & interfaces

    2020  Volume 12, Issue 26, Page(s) 29650–29660

    Abstract: The implementation of stimuli-responsive materials with dynamically controllable features has long been an important objective that challenges chemists in the materials science field. We report here the synthesis and characterization of [2]rotaxanes ( ...

    Abstract The implementation of stimuli-responsive materials with dynamically controllable features has long been an important objective that challenges chemists in the materials science field. We report here the synthesis and characterization of [2]rotaxanes (
    Language English
    Publishing date 2020-06-16
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.0c06251
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