1
|
Khatoon N, Subedi B, Chrisey DB. Synthesis of Silicon and Germanium Oxide Nanostructures via Photonic Curing; a Facile Approach to Scale Up Fabrication. ChemistryOpen 2024; 13:e202300260. [PMID: 38308174 PMCID: PMC11230936 DOI: 10.1002/open.202300260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/24/2024] [Indexed: 02/04/2024] Open
Abstract
Silicon and Germanium oxide (SiOx and GeOx) nanostructures are promising materials for energy storage applications due to their potentially high energy density, large lithiation capacity (~10X carbon), low toxicity, low cost, and high thermal stability. This work reports a unique approach to achieving controlled synthesis of SiOx and GeOx nanostructures via photonic curing. Unlike conventional methods like rapid thermal annealing, quenching during pulsed photonic curing occurs rapidly (sub-millisecond), allowing the trapping of metastable states to form unique phases and nanostructures. We explored the possible underlying mechanism of photonic curing by incorporating laws of photophysics, photochemistry, and simulated temperature profile of thin film. The results show that photonic curing of spray coated 0.1 M molarity Si and Ge Acetyl Acetate precursor solution, at total fluence 80 J cm-2 can yield GeOx and SiOx nanostructures. The as-synthesized nanostructures are ester functionalized due to photoinitiated chemical reactions in thin film during photonic curing. Results also showed that nanoparticle size changes from ~48 nm to ~11 nm if overall fluence is increased by increasing the number of pulses. These results are an important contribution towards large-scale synthesis of the Ge and Si oxide nanostructured materials which is necessary for next-generation energy storage devices.
Collapse
Affiliation(s)
- Najma Khatoon
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
| | - Binod Subedi
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
| | - Douglas B Chrisey
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
| |
Collapse
|
2
|
Zhou X, Zou Y, Ru H, Yan F, Liu J. Silica Nanochannels as Nanoreactors for the Confined Synthesis of Ag NPs to Boost Electrochemical Stripping Chemiluminescence of the Luminol-O 2 System for the Sensitive Aptasensor. Anal Chem 2024; 96:10264-10273. [PMID: 38869321 DOI: 10.1021/acs.analchem.4c01033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Herein, we, for the first time, synthesize silver nanoparticles (Ag NPs) within the nanochannels of amino group-functionalized vertically ordered mesoporous silica films (NH2-VMSF) and investigate their coreaction accelerator role in the luminol-dissolved oxygen (O2) electrochemical stripping chemiluminescence (ESCL) system. The synthesized Ag NPs are capable of electrocatalytic reduction of O2 to superoxide radicals, and meanwhile, sliver ions (Ag+) electrochemically stripped from Ag NPs can promote the amount of luminol anion radicals, generating the boosted ECL intensity of the luminol-dissolved O2 system. This proposed Ag NPs@NH2-VMSF on the indium tin oxide electrode was applied to construct the ESCL aptasensor for quantitative determination of prostate-specific antigen (PSA), yielding a low detection limit [0.19 pg/mL (S/N = 3)] and a broad linear dynamic range (1 pg/mL to 100 ng/mL). Furthermore, good analytical performance of PSA in serum with satisfactory recoveries and low relative standard deviation values is achieved by our developed ESCL aptasensor, rendering it a convenient and sensitive method for PSA determination in clinical applications and further broadening the strategy of ESCL techniques.
Collapse
Affiliation(s)
- Xiaoyu Zhou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yanqi Zou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hongjuan Ru
- Department of Chemistry, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Fei Yan
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jiyang Liu
- Department of Chemistry, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| |
Collapse
|
3
|
Iqbal S, Schneider TJK, Truong TT, Ulrich-Müller R, Nguyen PH, Ilyas S, Mathur S. Carriers for hydrophobic drug molecules: lipid-coated hollow mesoporous silica particles, and the influence of shape and size on encapsulation efficiency. NANOSCALE 2024; 16:11274-11289. [PMID: 38787696 DOI: 10.1039/d4nr01420k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Hydrophobic drugs, while designed to interact with specific receptors or enzymes located in lipid-rich cell membranes, often face challenges of limited bioavailability and insufficient circulation time due to their insolubility in aqueous environments. One plausible pathway to increase their blood circulation time is to load these drugs into biocompatible and hydrophilic carriers to enhance their uptake. In this study, mesoporous silica (mSiO2) nanocarriers of various morphologies (including cubes, capsules, and spheres) were synthesized. These nanocarriers were then surface-functionalized with alkyl chain hydrocarbons, specifically octadecyl-trimethoxysilane, (OCH3)3Si(CH2)17CH3, to render them hydrophobic. The resulting nanocarriers (((OCH3)3Si(CH2)17CH3)@mSiO2) showed up to 80% uptake for hydrophobic drugs. However, a significant drawback was observed as most of the drugs were prone to uncontrollable release within 6 h. This challenge of premature drug release was successfully mitigated by effectively sealing the drug-loaded nanocarriers with a pH-sensitive lipid overlayer. The lipid-coated nanocarriers prolonged drug containment and sustained release up to 72 h, compared to 6 h for uncoated nanocarriers, thereby facilitating longer blood circulation times. Moreover, the shape and size of nanocarriers were found to influence both drug entrapment capacity and release behavior with cubic forms exhibiting superior loading capacity due to higher surface area and porosity. Additionally, it was observed that the molecular weight and chemical structure of the drug molecules played a crucial role in determining their uptake and release profiles. Furthermore, the influence of different morphologies of nanocarriers on cell uptake and cytotoxicity in immune cells was elucidated. These findings underscore the importance of nanocarrier morphology and drug properties to enhance loading capacities and controlled release profiles, for designing drug delivery systems tailored for hydrophobic drugs.
Collapse
Affiliation(s)
- Sumiya Iqbal
- Institute of Inorganic and Materials Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.
| | - Tom-Jonas Klaus Schneider
- Institute of Inorganic and Materials Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.
| | - Thanh Tung Truong
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine; Center for Molecular Medicine Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Roman Ulrich-Müller
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), Joseph-Stelzmann-Straße 26, 50931, Cologne Germany
| | - Phuong-Hien Nguyen
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine; Center for Molecular Medicine Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Shaista Ilyas
- Institute of Inorganic and Materials Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.
| | - Sanjay Mathur
- Institute of Inorganic and Materials Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany.
| |
Collapse
|
4
|
Fatima N, Salehi H, Cueto-Díaz EJ, Desoutter A, Cuisinier F, Cunin F, Collart-Dutilleul PY. Nanostructured Porous Silicon for Bone Tissue Engineering: Kinetics of Particle Degradation and Si-Controlled Release. J Funct Biomater 2023; 14:493. [PMID: 37888158 PMCID: PMC10607156 DOI: 10.3390/jfb14100493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 10/28/2023] Open
Abstract
Nanostructured porous silicon (pSi) is a synthetic silicon-based material. Its biocompatibility and bioresorbability in body fluids make pSi an appealing biomaterial for tissue engineering, with surfaces characteristics facilitating human cell adhesion and differentiation. The resorption kinetics of such porous biomaterials is crucial for in vivo bone regeneration, in order to adapt biomaterial resorption to tissue formation, and to control the release of loaded bioactive molecules. We investigated pSi as a bioactive scaffold for bone tissue engineering, with an emphasis on kinetics of pSi resorption and silicon release. PSi particles and chips were fabricated from crystalline silicon, and functionalized by oxidation and chemical grafting of amine groups to mimic biological structures. Materials resorption over time was investigated with Raman spectroscopy, infrared spectroscopy, and Scanning Electron Microscopy. Silicon release was followed by mass spectrometry. Particle degradation and inclusion in newly formed bone were studied in vivo. The in vitro experiments revealed that non-oxidized pSi had an accelerated initial dissolution in ddH2O and an inhibition of initial Si release in SBF. This high reactivity also led to transformation towards amorphous non-resorbable silica when incubated in SBF. PSi resorption started immediately with a maximal dissolution in the first 24 h. Later, the dissolution rate decreased over time. In comparison, the resorption process of oxidized pSi seemed delayed, but more continuous. This delayed dissolution increased the bioactivity and stability, leading to enhanced bone formation in vivo. Delayed pSi degradation provided a constant surge of silicic acid over time and promoted bone regeneration, demonstrating the high potential of pSi for bone tissue engineering: Oxidized pSi were almost completely resorbed after 2 months of healing, with remaining partially dissolved particles surrounded by newly formed bone. On the contrary, non-oxidized particles were still obviously present after 2 months with limited bone regeneration. This delayed resorption is consistent with the in vitro observations in SBF, and particles' transformation towards silica.
Collapse
Affiliation(s)
- Naveen Fatima
- LBN, University of Montpellier, 34000 Montpellier, France; (N.F.); (A.D.); (F.C.)
| | - Hamideh Salehi
- LBN, University of Montpellier, 34000 Montpellier, France; (N.F.); (A.D.); (F.C.)
| | - Eduardo J. Cueto-Díaz
- Institut Charles Gerhardt UMR 5253, CNRS-ENSCM-University of Montpellier, 34000 Montpellier, France; (E.J.C.-D.)
- Centro de Astrobiología (CSIC-INTA), Torrejón de Ardoz, 28850 Madrid, Spain
| | - Alban Desoutter
- LBN, University of Montpellier, 34000 Montpellier, France; (N.F.); (A.D.); (F.C.)
| | - Frédéric Cuisinier
- LBN, University of Montpellier, 34000 Montpellier, France; (N.F.); (A.D.); (F.C.)
- Faculty of Dentistry, University of Montpellier, 34000 Montpellier, France
- Service Odontologie, Centre Hospitalier Universitaire de Montpellier, 34000 Montpellier, France
| | - Frédérique Cunin
- Institut Charles Gerhardt UMR 5253, CNRS-ENSCM-University of Montpellier, 34000 Montpellier, France; (E.J.C.-D.)
| | - Pierre-Yves Collart-Dutilleul
- LBN, University of Montpellier, 34000 Montpellier, France; (N.F.); (A.D.); (F.C.)
- Faculty of Dentistry, University of Montpellier, 34000 Montpellier, France
- Service Odontologie, Centre Hospitalier Universitaire de Montpellier, 34000 Montpellier, France
| |
Collapse
|
5
|
Choi JH, Kumari N, Kumar A, Acharya A, Ahn J, Kim J, Hwang H, Joo T, Kim JK, Lee IS. Stratum-Confined Solid-State Reaction (SC-SSR) toward Colloidal Silicon-Based Hollow Nanostructures for Bioapplications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301190. [PMID: 37096899 DOI: 10.1002/smll.202301190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/03/2023] [Indexed: 05/03/2023]
Abstract
Silicon nanostructures (SiNSs) can provide multifaceted bioapplications; but preserving their subhundred nm size during high-temperature silica-to-silicon conversion is the major bottleneck. The SC-SSR utilizes an interior metal-silicide stratum space at a predetermined radial distance inside silica nanosphere to guide the magnesiothermic reduction reaction (MTR)-mediated synthesis of hollow and porous SiNSs. In depth mechanistic study explores solid-to-hollow transformation encompassing predefined radial boundary through the participation of metal-silicide species directing the in-situ formed Si-phase accumulation within the narrow stratum. Evolving thin-porous Si-shell remains well protected by the in-situ segregated MgO emerging as a protective cast against the heat-induced deformation and interparticle sintering. Retrieved hydrophilic SiNSs (<100 nm) can be conveniently processed in different biomedia as colloidal solutions and endocytosized inside cells as photoluminescence (PL)-based bioimaging probes. Inside the cell, rattle-like SiNSs encapsulated with Pd nanocrystals can function as biorthogonal nanoreactors to catalyze intracellular synthesis of probe molecules through C-C cross coupling reaction.
Collapse
Affiliation(s)
- Jeong Hun Choi
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Nitee Kumari
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Amit Kumar
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Anubhab Acharya
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jungsoo Ahn
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jaerim Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Hyeonwoong Hwang
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jong Kyu Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - In Su Lee
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, Seoul, 03722, South Korea
| |
Collapse
|
6
|
Aleksanyan M, Sayunts A, Shahkhatuni G, Simonyan Z, Kasparyan H, Kopecký D. Growth, Characterization, and Application of Vertically Aligned Carbon Nanotubes Using the RF-Magnetron Sputtering Method. ACS OMEGA 2023; 8:20949-20958. [PMID: 37332802 PMCID: PMC10268627 DOI: 10.1021/acsomega.3c01705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/22/2023] [Indexed: 06/20/2023]
Abstract
The aim of this work is to synthesize and characterize a nanostructured material with improved parameters suitable as a chemiresistive gas sensor sensitive to propylene glycol vapor (PGV). Thus, we demonstrate a simple and cost-effective technology to grow vertically aligned carbon nanotubes (CNTs) and fabricate a PGV sensor based on Fe2O3:ZnO/CNT material using the radio frequency magnetron sputtering method. The presence of vertically aligned carbon nanotubes on the Si(100) substrate was confirmed by scanning electron microscopy and Fourier transform infrared (FTIR), Raman, and energy-dispersive X-ray spectroscopies. The uniform distribution of elements in both CNTs and Fe2O3:ZnO materials was revealed by e-mapped images. The hexagonal shape of the ZnO material in the Fe2O3:ZnO structure and the interplanar spacing in the crystals were clearly visible by transmission electron microscopy images. The gas-sensing behavior of the Fe2O3:ZnO/CNT sensor toward PGV was investigated in the temperature range of 25-300 °C with and without ultraviolet (UV) irradiation. The sensor showed clear and repeatable response/recovery characteristics in the PGV range of 1.5-140 ppm, sufficient linearity of response/concentration dependence, and high selectivity both at 200 and 250 °C without UV radiation. This is a basis for concluding that the synthesized Fe2O3:ZnO/CNT structure is the best candidate for use in PGV sensors, which will allow its further successful application in real-life sensor systems.
Collapse
Affiliation(s)
- Mikayel Aleksanyan
- Center
of Semiconductor Devices and Nanotechnologies, Yerevan State University, 1 Alex Manoogian, 0025 Yerevan, Armenia
| | - Artak Sayunts
- Center
of Semiconductor Devices and Nanotechnologies, Yerevan State University, 1 Alex Manoogian, 0025 Yerevan, Armenia
| | - Gevorg Shahkhatuni
- Center
of Semiconductor Devices and Nanotechnologies, Yerevan State University, 1 Alex Manoogian, 0025 Yerevan, Armenia
| | - Zarine Simonyan
- Center
of Semiconductor Devices and Nanotechnologies, Yerevan State University, 1 Alex Manoogian, 0025 Yerevan, Armenia
| | - Hayk Kasparyan
- Department
of Mathematics, Informatics and Cybernetics, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, Prague 6, 166 28 Prague, Czech Republic
| | - Dušan Kopecký
- Department
of Mathematics, Informatics and Cybernetics, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, Prague 6, 166 28 Prague, Czech Republic
| |
Collapse
|
7
|
Daulay A, Andriayani, Marpongahtun, Gea S, Tamrin. Scalable synthesis of porous silicon nanoparticles from rice husk with the addition of KBr as a scavenger agent during reduction by the magnesiothermic method as anode lithium-ion batteries with sodium alginate as the binder. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
8
|
Nawaz S, Khan Y, Abdelmohsen SAM, Khalid S, Björk EM, Rasheed MA, Siddiq M. Polyaniline inside the pores of high surface area mesoporous silicon as composite electrode material for supercapacitors. RSC Adv 2022; 12:17228-17236. [PMID: 35755593 PMCID: PMC9185315 DOI: 10.1039/d2ra01829b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
Mesoporous silicon (mSi) obtained by the magnesiothermic reduction of mesoporous silica was used to deposit polyaniline (PANI) in its pores, the composite was tested for its charge storage application for high performance supercapacitor electrodes. The mesoporous silica as confirmed by Small Angle X-ray Scattering (SAXS) has a Brunauer-Emmett-Teller (BET) surface area of 724 m2g-1 and mean pore size of 5 nm. After magnesiothermic reduction to mSi, the BET surface area is reduced to 348 m2g-1 but the mesoporousity is retained with a mean pore size of 10 nm. The BET surface area of mesoporous silicon is among the highest for porous silicon prepared/reduced from silica. In situ polymerization of PANI inside the pores of mSi was achieved by controlling the polymerization conditions. As a supercapacitor electrode, the mSi-PANI composite exhibits better charge storage performance as compared to pure PANI and mesoporous silica-PANI composite electrodes. Enhanced electrochemical performance of the mSi-PANI composite is attributed to the high surface mesoporous morphology of mSi with a network structure containing abundant mesopores enwrapped by an electrochemically permeable polyaniline matrix.
Collapse
Affiliation(s)
- Saima Nawaz
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan +92 5190642147
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Yaqoob Khan
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Shaimaa A M Abdelmohsen
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University P. O. Box 84428 Riyadh 11681 Saudi Arabia
| | - Sadia Khalid
- Nanoscience and Technology Department, National Centre for Physics QAU Campus, Shahdra Valley Road Islamabad 45320 Pakistan +92 512077389 +92 3455235423
| | - Emma M Björk
- Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University SE-581 83 Linköping Sweden
| | - Muhammad Asim Rasheed
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS) Islamabad 45650 Pakistan
| | - M Siddiq
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan +92 5190642147
| |
Collapse
|
9
|
Tran VA, Vo GV, Tan MA, Park JS, An SSA, Lee SW. Dual Stimuli-Responsive Multifunctional Silicon Nanocarriers for Specifically Targeting Mitochondria in Human Cancer Cells. Pharmaceutics 2022; 14:pharmaceutics14040858. [PMID: 35456692 PMCID: PMC9028052 DOI: 10.3390/pharmaceutics14040858] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 03/30/2022] [Accepted: 04/11/2022] [Indexed: 01/16/2023] Open
Abstract
Specific targeting, selective stimuli-responsiveness, and controlled release of anticancer agents are requested for high therapeutic efficiency with a minimal adverse effect. Herein, we report the sophisticated synthesis and functionalization of fluorescent mesoporous silicon (FMPSi) nanoparticles decorated with graphene oxide (GO) nanosheets. GO-wrapped FMPSi (FMPSi@GO) was loaded with a cisplatin (Cis) anticancer agent, and Cis-loaded FMPSi@GO (FMPSi-Cis@GO) exhibited the dual stimuli (pH and NIR)-responsiveness of controlled drug release, i.e., the drug release rate was distinctly enhanced at acidic pH 5.5 than at neutral pH 7.0 and further enhanced under NIR irradiation at acidic pH condition. Notably, dequalinium-conjugated FMPSi-Cis@GO (FMPSi-Cis@GO@DQA) demonstrated an excellent specificity for mitochondrial targeting in cancer cells without noticeable toxicity to normal human cells. Our novel silicon nanocarriers demonstrated not only stimuli (pH and NIR)-responsive controlled drug release, but also selective accumulation in the mitochondria of cancer cells and destroying them.
Collapse
Affiliation(s)
- Vy Anh Tran
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujung-gu, Seongnam-si 461-701, Gyeonggi-do, Korea;
| | - Giau Van Vo
- Department of Biomedical Engineering, School of Medicine, Vietnam National University Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 700000, Vietnam;
- Vietnam National University Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 700000, Vietnam
| | - Mario A. Tan
- College of Science and Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila 1015, Philippines;
| | - Joon-Seo Park
- Department of Chemistry, Eastern University, 1300 Eagle Road, St. Davids, PA 19087, USA;
| | - Seong Soo A. An
- Department of Bionano Technology, Bionano Research Institute, Gachon University, 1342 Seongnam-daero, Sujung-gu, Seongnam-si 461-701, Gyeonggi-do, Korea
- Correspondence: (S.S.A.A.); (S.-W.L.); Tel.: +82-31-750-8755 (S.S.A.A.); +82-31-750-5360 (S.-W.L.)
| | - Sang-Wha Lee
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujung-gu, Seongnam-si 461-701, Gyeonggi-do, Korea;
- Correspondence: (S.S.A.A.); (S.-W.L.); Tel.: +82-31-750-8755 (S.S.A.A.); +82-31-750-5360 (S.-W.L.)
| |
Collapse
|
10
|
Synthesis, characterization, and in-vitro evaluation of piperine-loaded silica/hydroxyapatite mesoporous nanoparticles. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01813-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
11
|
Zuo X, Cheng Y, Zhu J, Gao J, Xia Y. Porous silicon derived from 130 nm Stöber silica as lithium‐ion battery anode. NANO SELECT 2021. [DOI: 10.1002/nano.202000313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Xiuxia Zuo
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang Province 315201 P. R. China
| | - Ya‐Jun Cheng
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang Province 315201 P. R. China
- Department of Materials University of Oxford Oxford UK
| | - Jin Zhu
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang Province 315201 P. R. China
| | - Jie Gao
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang Province 315201 P. R. China
| | - Yonggao Xia
- Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang Province 315201 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| |
Collapse
|
12
|
Jiao X, Sun L, Zhang W, Ren J, Zhang L, Cao Y, Xu Z, Kang Y, Xue P. Engineering oxygen-deficient ZrO 2-x nanoplatform as therapy-activated "immunogenic cell death (ICD)" inducer to synergize photothermal-augmented sonodynamic tumor elimination in NIR-II biological window. Biomaterials 2021; 272:120787. [PMID: 33819815 DOI: 10.1016/j.biomaterials.2021.120787] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/16/2021] [Accepted: 03/25/2021] [Indexed: 12/29/2022]
Abstract
Nano-zirconia, as an amphoteric semiconductor, has been industrially exploited in photocatalytic reactions and as piezoelectric sensors. However, its biomedical applications, especially in antitumor therapeutics, have been seldom investigated to date. Here, oxygen-deficient zirconia (ZrO2-x)-based nanoplatform with surface PEGylation and cyclic-Arg-Gly-Asp (cRGD) peptide functionalization (ZrO2-x@PEG/cRGD, abbreviated as ZPR) was rationally designed and established for the first time, which was utilized as therapy-activated "immunogenic cell death (ICD)" inducer to boost photothermal-augmented sonodynamic tumor elimination in NIR-II biological window. As-synthesized ZPR nanoparticles (NPs) exhibited intense optical absorbance in the wavelength range of 900-1100 nm, which endowed ZPR NPs with a photothermal conversion efficiency as high as 45.8% for photothermal therapy (PTT). Moreover, owing to the abundant surface oxygen defects, ZPR NPs can serve as a category of high-performance nano-sonosensitizer based on the strengthened separation of electron (e-)/hole (h+) pairs from the energy band under external ultrasound (US) activation. More importantly, cytotoxic reactive oxygen species (ROS) generated from sonodynamic therapy (SDT) can effectively induce immunogenic cell death (ICD), which is regarded to be significant to boost systemic anti-tumor immunity for rendering a complete tumor eradication post-treatment. In vivo experiments on tumor xenografts demonstrated the high therapeutic efficacy upon photothermal-augmented sonodynamic therapy, with the aid of photoacoustic (PA) imaging navigation. Remarkably, the level of inflammatory cytokines, including type I interferon (IFN), tumor necrosis factor α (TNF-α) as well as interleukin (IL-6) were systemically upgraded after NIR-II/US irradiation, verifying the promotion of immunogenicity. Taken together, this study delivers useful insights for extending the applications of zirconia as promising translational medicine for tumor theranostics in the near future.
Collapse
Affiliation(s)
- Xiaodan Jiao
- State Key Laboratory of Silkworm Genome Biology, School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Lihong Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China
| | - Wei Zhang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Junjie Ren
- State Key Laboratory of Silkworm Genome Biology, School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Lei Zhang
- Cancer Center, Medical Research Institute, Southwest University, Chongqing, 400716, China
| | - Yang Cao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Zhigang Xu
- State Key Laboratory of Silkworm Genome Biology, School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Yuejun Kang
- State Key Laboratory of Silkworm Genome Biology, School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Peng Xue
- State Key Laboratory of Silkworm Genome Biology, School of Materials and Energy, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
13
|
He Y, Han F, Wang F, Tao J, Wu H, Zhang F, Liu J. Optimal microstructural design of pitch-derived soft carbon shell in yolk-shell silicon/carbon composite for superior lithium storage. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137924] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
14
|
Rehman WU, Wang H, Manj RZA, Luo W, Yang J. When Silicon Materials Meet Natural Sources: Opportunities and Challenges for Low-Cost Lithium Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e1904508. [PMID: 31657135 DOI: 10.1002/smll.201904508] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/29/2019] [Indexed: 06/10/2023]
Abstract
The manipulation of progressive lithium-ion batteries (LIBs) with high energy density, low cost, and long-term cycling stability is of high priority to meet the growing demands for next-generation energy storage devices. Silicon (Si) has been receiving marvelous attention as a promising anode material for rechargeable LIBs, due to its high theoretical gravimetric capacity and low cost. Si is the second most abundant element in the earth crust in the form of silicates, so it is the most cost-effective element as an anode material in next-generation LIBs. In this review, different natural sources such as rice husk, sugar cane bagasse, bamboo, reed plant, sand, halloysite, and different waste sources such as waste of the solar power industry, fly ash, straw ash, and other industrial waste that can give rise to different nanostructured Si are systematically summarized. In addition, different synthesis methods of fabricating nanostructured Si are reviewed as well as including magnesiothermic reduction, etching methods, ball milling, and chemical vapor deposition. The advantages and disadvantages of these kind of synthesis methods are discussed as well. Furthermore, the opportunities and challenges of nano-Si are also discussed.
Collapse
Affiliation(s)
- Waheed Ur Rehman
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Haifeng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Rana Zafar Abbas Manj
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Wei Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Institute of Functional Materials, Donghua University, Shanghai, 201620, China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Institute of Functional Materials, Donghua University, Shanghai, 201620, China
| |
Collapse
|
15
|
Xuan L, Liao W, Wang M, Zhou H, Ding Y, Yan F, Liu J, Tang H, Xi F. Integration of vertically-ordered mesoporous silica-nanochannel film with electro-activated glassy carbon electrode for improved electroanalysis in complex samples. Talanta 2020; 225:122066. [PMID: 33592785 DOI: 10.1016/j.talanta.2020.122066] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 10/22/2022]
Abstract
Vertically-ordered mesoporous silica-nanochannel films (VMSF) with highly ordered nanochannels, uniform and adjustable pore size, ultra-thin thickness, and high porosity, have attracted considerable attention in analysis, molecular separation, catalysis, and nanomaterial synthesis. However, their widespread applications in practical electrochemical sensing are largely limited by the poor adhesion to common electrode materials, especially the lack of highly active substrate electrode to equip mechanically stable VMSF. Herein, we report a facile strategy to fabricate VMSF on widely used sensing electrodes without the use of any chemical adhesive for developing superior VMSF based electrochemical sensors. We demonstrate that simple electrochemical polarization (anodic polarization and subsequent cathodic reduction) to activate glassy carbon electrode (GCE) can generate a suitable surface environment allowing direct growth of stable VMSF on such pre-activated GCE (p-GCE) via electrochemically assisted self-assembly (EASA). Compared to traditional VMSF electrodes with ITO or organosilane grafted GCE as substrate, the developed VMSF/p-GCE exhibits much higher electrochemical response to four redox biomarkers (norepinephrine, dopamine, tryptophan, and uric acid). In-depth insights on mechanisms of the high electrochemical activity and incorporation stability of VMSF/p-GCE are made. We further demonstrate the VMSF/p-GCE can be employed to detect dopamine in real serum samples with exceptional sensitivity, low detection potential, as well as superior anti-interference and anti-fouling performance. In addition, high selectivity is realized as the common co-existing interference substances (ascorbic acid-AA and uric acid-UA) do not interfere with the detection.
Collapse
Affiliation(s)
- Lingli Xuan
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China
| | - Wenyan Liao
- Affiliated International Zhuang Medicine Hospital, Guangxi University of Chinese Medicine, Nanning, 530023, PR China
| | - Meifang Wang
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China
| | - Huaxu Zhou
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China
| | - Yao Ding
- Guangxi University of Chinese Medicine, Nanning, 530020, PR China
| | - Fei Yan
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China.
| | - Jiyang Liu
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China
| | - Hongliang Tang
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530023, PR China.
| | - Fengna Xi
- Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, PR China.
| |
Collapse
|
16
|
Shi W, Wu HB, Baucom J, Li X, Ma S, Chen G, Lu Y. Covalently Bonded Si-Polymer Nanocomposites Enabled by Mechanochemical Synthesis as Durable Anode Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39127-39134. [PMID: 32805915 DOI: 10.1021/acsami.0c09938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Silicon is one of the most promising anode materials for lithium-ion batteries due to its high theoretical capacity and low cost. However, significant capacity fading caused by severe structural degradation during cycling limits its practical implication. To overcome this barrier, we design a covalently bonded nanocomposite of silicon and poly(vinyl alcohol) (Si-PVA) by high-energy ball-milling of a mixture of micron-sized Si and PVA. The obtained Si nanoparticles are wrapped by resilient PVA coatings that covalently bond to the Si particles. In such nanostructures, the soft PVA coatings can accommodate the volume change of the Si particles during repeated lithiation and delithiation. Simultaneously, as formed covalent bonds enhance the mechanical strength of the coatings. Due to the significantly improved structural stability, the Si-PVA composite delivers a lifespan of 100 cycles with a high capacity of 1526 mAh g-1. In addition, a high initial Coulombic efficiency of over 86% and an average value of 99.2% in subsequent cycles can be achieved. This reactive ball-milling strategy provides a low-cost and scalable route to fabricate high-performance anode materials.
Collapse
Affiliation(s)
- Wenyue Shi
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Hao Bin Wu
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Jesse Baucom
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Xianyang Li
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Shengxiang Ma
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Gen Chen
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
| | - Yunfeng Lu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| |
Collapse
|
17
|
Guo J, Zhao G, Xie T, Dong D, Ma C, Su L, Gong L, Lou X, Guo X, Wang J, Zhu Y. Carbon/Polymer Bilayer-Coated Si-SiO x Electrodes with Enhanced Electrical Conductivity and Structural Stability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19023-19032. [PMID: 32233448 DOI: 10.1021/acsami.0c02445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Si-based electrodes offer exceptionally high capacity and energy density for lithium-ion batteries (LIBs),but suffer from poor structural stability and electrical conductivity that hamper their practical applications. To tackle these obstacles, we design a C/polymer bilayer coating deposited on Si-SiOx microparticles. The inner C coating is used to improve electrical conductivity. The outer C-nanoparticle-reinforced polypyrrole (CNP-PPy) is a polymer matrix composite that can minimize the volumetric expansion of Si-SiOx and enhance its structural stability during battery operation. Electrodes made of such robust Si-SiOx@C/CNP-PPy microparticles exhibit excellent cycling performance: 83% capacity retention (794 mAh g-1) at a 2 C rate after more than 900 cycles for a coin-type half cell, and 80% capacity retention (with initial energy density of 308 Wh kg-1) after over 1100 cycles for a pouch-type full cell. By comparing the samples with different coatings, an in-depth understanding of the performance enhancement is achieved, i.e., the C/CNP-PPy with cross-link bondings formed in the bilayer coating plays a key role for the improved structural stability. Moreover, a full battery using the Si-SiOx@C/CNP-PPy electrode successfully drives a car model, demonstrating a bright application prospect of the C/polymer bilayer coating strategy to make future commercial LIBs with high stability and energy density.
Collapse
Affiliation(s)
- Junpo Guo
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Guangming Zhao
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Tian Xie
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Dongqi Dong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Chuanli Ma
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Linghao Su
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Liangyu Gong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiangdong Lou
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Xuyun Guo
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jie Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Ye Zhu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| |
Collapse
|
18
|
Jones ECL, Bimbo LM. Crystallisation Behaviour of Pharmaceutical Compounds Confined within Mesoporous Silicon. Pharmaceutics 2020; 12:E214. [PMID: 32121652 PMCID: PMC7150833 DOI: 10.3390/pharmaceutics12030214] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/17/2020] [Accepted: 02/21/2020] [Indexed: 12/20/2022] Open
Abstract
The poor aqueous solubility of new and existing drug compounds represents a significant challenge in pharmaceutical development, with numerous strategies currently being pursued to address this issue. Amorphous solids lack the repeating array of atoms in the structure and present greater free energy than their crystalline counterparts, which in turn enhances the solubility of the compound. The loading of drug compounds into porous materials has been described as a promising approach for the stabilisation of the amorphous state but is dependent on many factors, including pore size and surface chemistry of the substrate material. This review looks at the applications of mesoporous materials in the confinement of pharmaceutical compounds to increase their dissolution rate or modify their release and the influence of varying pore size to crystallise metastable polymorphs. We focus our attention on mesoporous silicon, due to the ability of its surface to be easily modified, enabling it to be stabilised and functionalised for the loading of various drug compounds. The use of neutron and synchrotron X-ray to examine compounds and the mesoporous materials in which they are confined is also discussed, moving away from the conventional analysis methods.
Collapse
Affiliation(s)
| | - Luis M. Bimbo
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK;
| |
Collapse
|
19
|
Khanna L, Lai Y, Dasog M. Systematic evaluation of inorganic salts as a heat sink for the magnesiothermic reduction of silica. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this study, the effectivity of a series of inorganic salts, sodium chloride, calcium chloride, magnesium chloride, potassium chloride, and sodium bromide as heat sinks during magnesiothermic reduction of silica to porous silicon was investigated. The salts were chosen based on cost, thermal stability, ability to remain chemically inert during the reduction process, and ease of removal after the reaction. The structural integrity of the spherical porous silicon nanoparticles was observed using scanning electron microscopy, the surface area was determined via nitrogen adsorption experiments, and the crystallite size was determined using powder X-ray diffraction analysis; together, these were used to determine the efficacy of each salt. The ability of a salt to act as an effective heat sink was found to be highly correlated and principally dependent on the heat capacity of the salt. Calcium chloride was found to be the most effective heat sink overall among the five heat sinks investigated here.
Collapse
Affiliation(s)
- Logesh Khanna
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
| | - Yiqi Lai
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
| | - Mita Dasog
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS B3J 2J9, Canada
| |
Collapse
|
20
|
Yue XY, Yan Z, Song Y, Wu XJ, Zhou YN. Synthesis of complementary hierarchical structured Si/C composites with high Si content for lithium-ion batteries. NANOSCALE 2018; 10:19195-19202. [PMID: 30303217 DOI: 10.1039/c8nr04280b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Si/C composites are considered as the most promising anode materials for next-generation lithium-ion batteries (LIBs) due to their high specific capacity and low cost. However, the commercialized Si/C composites cannot maintain a Si content over 10 wt% for sustaining an acceptable cycle life. To achieve long-term cycle stability for Si/C composites with high Si content is still very challenging. Here, we report a rationally designed double-morphology Si/graphene (DMSiG) composite with a high Si content of 78 wt%, and prove its feasibility as a high performance anode material for LIBs. DMSiG composes of Si quantum-dot decorated graphene and mesoporous Si spheres with a complementary hierarchical structure. The graphene framework enhances the electronic conductivity, alleviates the aggregation of mesoporous Si spheres and provides space and flexibility to buffer the volume change during cycling. Mesoporous Si spheres contribute to a large reversible capacity and support the hierarchical architecture of DMSiG. The Si quantum-dots help to build firm connections between graphene and mesoporous Si spheres to avoid their separation during cycling. Coupling these features together, the DMSiG anode delivers a high reversible capacity of 1318 mA h g-1 at a current density of 500 mA g-1 and 684 mA h g-1 at 2000 mA g-1.
Collapse
Affiliation(s)
- Xin-Yang Yue
- Department of Materials Science, Fudan University, Shanghai 200433, China.
| | | | | | | | | |
Collapse
|
21
|
Wan H, Xiong H, Liu X, Chen G, Zhang N, Wang H, Ma R, Qiu G. Three-dimensionally interconnected Si frameworks derived from natural halloysite clay: a high-capacity anode material for lithium-ion batteries. Dalton Trans 2018; 47:7522-7527. [PMID: 29790528 DOI: 10.1039/c8dt01242c] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On account of its high theoretical capacity, silicon (Si) has been regarded as a promising anode material for Li-ion batteries. Extracting Si content from earth-abundant and low-cost aluminosilicate minerals, rather than from artificial silica (SiO2) precursors, is a more favorable and practical method for the large-scale application of Si anodes. In this work, three-dimensionally interconnected (3D-interconnected) Si frameworks with a branch diameter of ∼15 nm are prepared by the reduction of amorphous SiO2 nanotubes derived from natural halloysite clay. Benefiting from their nanostructure, the as-prepared 3D-interconnected Si frameworks yield high reversible capacities of 2.54 A h g-1 at 0.1 A g-1 after 50 cycles, 1.87 A h g-1 at 0.5 A g-1 after 200 cycles, and 0.97 A h g-1 at 2 A g-1 after a long-term charge-discharge process of 500 cycles, remarkably outperforming the commercial Si material. Further, when the as-prepared Si frameworks and commercial LiCoO2 cathodes are paired in full cells, a high anode capacity of 0.98 A h g-1 is achieved after 100 cycles of rapid charge/discharge at 2 A g-1. This work provides a new strategy for the synthesis of high-capacity Si anodes derived from natural aluminosilicate clay.
Collapse
Affiliation(s)
- Hao Wan
- State Key Laboratory of Powder Metallurgy and School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China.
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Lai Y, Thompson JR, Dasog M. Metallothermic Reduction of Silica Nanoparticles to Porous Silicon for Drug Delivery Using New and Existing Reductants. Chemistry 2018; 24:7913-7920. [PMID: 29569356 DOI: 10.1002/chem.201705818] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 11/07/2022]
Abstract
In this study, the influence of metals (Mg, Al, and Ca) and reaction conditions (time, temperature, and metal grain size) on the metallothermic reduction of Stöber silica nanoparticles (NPs) to form porous Si has been explored. Mg metal was found to be an effective reducing agent even at temperatures below its melting point; however, it also induced a high degree of structural damage and morphology change. Al was effective in reducing silica NPs only at its melting point or above, but the resulting particles retained a higher degree of structural morphology as compared to those reduced using Mg. Ca was found to be ineffective in reducing silica. A new reductant, a mixture of 70 % Mg and 30 % Al, was found to induce the least amount of morphology change, and the reactions proceeded at a temperature (450 °C) lower than those required with Mg or Al individually. Furthermore, porous Si NPs obtained using Mg, Al, and the mixture of 70 % Mg and 30 % Al as reductants have been investigated as carriers for ibuprofen loading and release. Porous Si obtained from reductions with Mg and the Mg/Al mixture showed higher drug loading and a sustained drug release profile, whereas porous Si obtained from Al reduction had lower loading and showed a conventional release profile over 24 h.
Collapse
Affiliation(s)
- Yiqi Lai
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS, Canada
| | - Jonathan R Thompson
- Division of Materials Science, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Mita Dasog
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, Halifax, NS, Canada
| |
Collapse
|
23
|
Waste Windshield-Derived Silicon/Carbon Nanocomposites as High-Performance Lithium-Ion Battery Anodes. Sci Rep 2018; 8:960. [PMID: 29343780 PMCID: PMC5772056 DOI: 10.1038/s41598-018-19529-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 01/04/2018] [Indexed: 11/09/2022] Open
Abstract
Silicon has emerged as the most promising high-capacity material for lithium-ion batteries. Waste glass can be a potential low cost and environmentally benign silica resource enabling production of nanosized silicon at the industry level. Windshields are generally made of laminated glass comprising two separate glass bonded together with a layer of polyvinyl butyral sandwiched between them. Herein, silicon/carbon nanocomposites are fabricated from windshields for the first time via magnesiothermic reduction and facile carbonization process using both waste glass and polyvinyl butyral as silica and carbon sources, respectively. High purity reduced silicon has unique 3-dimensional nanostructure with large surface area. Furthermore, the incorporation of carbon in silicon enable to retain the composite anodes highly conductive and mechanically robust, thus providing enhanced cycle stability.
Collapse
|
24
|
Kajiya D, Saitow KI. Si nanocrystal solution with stability for one year. RSC Adv 2018; 8:41299-41307. [PMID: 35559330 PMCID: PMC9091691 DOI: 10.1039/c8ra08816k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 12/03/2018] [Indexed: 12/14/2022] Open
Abstract
Colloidal silicon nanocrystals (SiNCs) are a promising material for next-generation nanostructured devices. High-stability SiNC solutions are required for practical use as well as studies on the properties of SiNC. Here, we show a solution of SiNCs that was stable for one year without aggregation. The stable solution was synthesized by a facile process, i.e., pulsed laser ablation of a Si wafer in isopropyl alcohol (IPA). The long-term stability was due to a large ζ-potential of −50 mV from a SiNC passivation layer composed of oxygen, hydrogen, and alkane groups, according to the results of eight experiments and theoretical calculations. This passivation layer also resulted in good performance as an additive for a conductive polymer film. Namely, a 5-fold enhancement in carrier density was established by the addition of SiNCs into an organic conductive polymer, poly(3-dodecylthiophene), which is useful for solar cells. Furthermore, it was found that fresh (<1 day) and aged (4 months) SiNCs give the same enhancement. The long-term stability was attributed to a great repulsive energy in IPA, whose value was quantified as a function the distance between SiNCs. A stable nanocrystal for one year without aggregation in a liquid is synthesized by one-step, one-pot, and one-hour process.![]()
Collapse
Affiliation(s)
- Daisuke Kajiya
- Natural Science Center for Basic Research and Development (N-BARD)
- Hiroshima University
- Higashi-hiroshima
- Japan
- Department of Chemistry
| | - Ken-ichi Saitow
- Natural Science Center for Basic Research and Development (N-BARD)
- Hiroshima University
- Higashi-hiroshima
- Japan
- Department of Chemistry
| |
Collapse
|
25
|
Kikuchi K, Yamamoto K, Nomura N, Kawasaki A. Synthesis of n-type Mg 2Si/CNT Thermoelectric Nanofibers. NANOSCALE RESEARCH LETTERS 2017; 12:343. [PMID: 28494571 PMCID: PMC5423877 DOI: 10.1186/s11671-017-2120-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 05/01/2017] [Indexed: 05/16/2023]
Abstract
Magnesium silicide (Mg2Si)/carbon nanotube (CNT) thermoelectric nanofibers for use as a flexible thermoelectric material were successfully synthesized through the combined processes of the sol-gel method, magnesiothermic reduction, and liquid-solid phase reaction. In the resulting product, each CNT was coated with Mg2Si which was an approximately 60-nm-thick single crystal. The synthesized Mg2Si-coated CNTs exhibited n-type thermoelectric behavior confirming that n-type thermoelectric composite nanofibers were successfully obtained.
Collapse
Affiliation(s)
- Keiko Kikuchi
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan.
- , Postal address: 6-6-02, Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
| | - Kodai Yamamoto
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Naoyuki Nomura
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Akira Kawasaki
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| |
Collapse
|
26
|
Liu Z, Chang X, Wang T, Li W, Ju H, Zheng X, Wu X, Wang C, Zheng J, Li X. Silica-Derived Hydrophobic Colloidal Nano-Si for Lithium-Ion Batteries. ACS NANO 2017; 11:6065-6073. [PMID: 28570805 DOI: 10.1021/acsnano.7b02021] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Silica can be converted to silicon by magnesium reduction. Here, this classical reaction is renovated for more efficient preparation of silicon nanoparticles (nano-Si). By reducing the particle size of the starting materials, the reaction can be completed within 10 min by mechanical milling at ambient temperature. The obtained nano-Si with high surface reactivity are directly reacted with 1-pentanol to form an alkoxyl-functionalized hydrophobic colloid, which significantly simplifies the separation process and minimizes the loss of small Si particles. Nano-Si in 5 g scale can be obtained in one single batch with laboratory scale setups with very high yield of 89%. Utilizing the excellent dispersion in ethanol of the alkoxyl-functionalized nano-Si, surface carbon coating can be readily achieved by using ethanol soluble oligomeric phenolic resin as the precursor. The nano-Si after carbon coating exhibit excellent lithium storage performance comparable to the state of the art Si-based anode materials, featured for the high reversible capacity of 1756 mAh·g-1 after 500 cycles at a current density of 2.1 A·g-1. The preparation approach will effectively promote the development of nano-Si-based anode materials for lithium-ion batteries.
Collapse
Affiliation(s)
| | | | | | - Wei Li
- BTR New Energy Materials, Inc. , High Tech Industrial Park, Xitian, Gongming Town, Guangming New District, Shenzhen 518106, China
| | - Haidong Ju
- Department of Chemistry, Kunming University , Kunming 650214, China
| | | | | | | | | | | |
Collapse
|
27
|
Yoon T, Bok T, Kim C, Na Y, Park S, Kim KS. Mesoporous Silicon Hollow Nanocubes Derived from Metal-Organic Framework Template for Advanced Lithium-Ion Battery Anode. ACS NANO 2017; 11:4808-4815. [PMID: 28467837 DOI: 10.1021/acsnano.7b01185] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Controlling the morphology of nanostructured silicon is critical to improving the structural stability and electrochemical performance in lithium-ion batteries. The use of removable or sacrificial templates is an effective and easy route to synthesize hollow materials. Herein, we demonstrate the synthesis of mesoporous silicon hollow nanocubes (m-Si HCs) derived from a metal-organic framework (MOF) as an anode material with outstanding electrochemical properties. The m-Si HC architecture with the mesoporous external shell (∼15 nm) and internal void (∼60 nm) can effectively accommodate volume variations and relieve diffusion-induced stress/strain during repeated cycling. In addition, this cube architecture provides a high electrolyte contact area because of the exposed active site, which can promote the transportation of Li ions. The well-designed m-Si HC with carbon coating delivers a high reversible capacity of 1728 mAhg-1 with an initial Coulombic efficiency of 80.1% after the first cycle and an excellent rate capability of >1050 mAhg-1 even at a 15 C-rate. In particular, the m-Si HC anode effectively suppresses electrode swelling to ∼47% after 100 cycles and exhibits outstanding cycle stability of 850 mAhg-1 after 800 cycles at a 1 C-rate. Moreover, a full cell (2.9 mAhcm-2) comprising a m-Si HC-graphite anode and LiCoO2 cathode exhibits remarkable cycle retention of 72% after 100 cycles at a 0.2 C-rate.
Collapse
Affiliation(s)
- Taeseung Yoon
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Taesoo Bok
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Chulhyun Kim
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Younghoon Na
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Soojin Park
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Kwang S Kim
- Center for Superfunctional Materials, Department of Chemistry and §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil, Ulsan 44919, Republic of Korea
| |
Collapse
|
28
|
Zuo X, Xia Y, Ji Q, Gao X, Yin S, Wang M, Wang X, Qiu B, Wei A, Sun Z, Liu Z, Zhu J, Cheng YJ. Self-Templating Construction of 3D Hierarchical Macro-/Mesoporous Silicon from 0D Silica Nanoparticles. ACS NANO 2017; 11:889-899. [PMID: 28010061 DOI: 10.1021/acsnano.6b07450] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Porous silicon has found wide applications in many different fields including catalysis and lithium-ion batteries. Three-dimensional hierarchical macro-/mesoporous silicon is synthesized from zero-dimensional Stöber silica particles through a facile and scalable magnesiothermic reduction process. By systematic structure characterization of the macro-/mesoporous silicon, a self-templating mechanism governing the formation of the porous silicon is proposed. Applications as lithium-ion battery anode and photocatalytic hydrogen evolution catalyst are demonstrated. It is found that the macro-/mesoporous silicon shows significantly improved cyclic and rate performance over the commercial nanosized and micrometer-sized silicon particles. After 300 cycles at 0.2 A g-1, the reversible specific capacity is still retained as much as 959 mAh g-1 with a high mass loading density of 1.4 mg cm-2. With the large current density of 2 A g-1, a reversible capacity of 632 mAh g-1 is exhibited. The coexistence of both macro- and mesoporous structures is responsible for the enhanced performance. The macro-/mesoporous silicon also shows superior catalytic performance for photocatalytic hydrogen evolution compared to the silicon nanoparticles.
Collapse
Affiliation(s)
- Xiuxia Zuo
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
- University of Chinese Academy of Sciences , 19A Yuquan Road, Shijingshan District, Beijing, 100049, People's Republic of China
| | - Yonggao Xia
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Qing Ji
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
- The University of Nottingham Ningbo China , 199 Taikang East Road, Ningbo, 315100, Zhejiang Province, People's Republic of China
| | - Xiang Gao
- Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, School of Environmental and Energy, Beijing University of Technology , Beijing, 100124, People's Republic of China
| | - Shanshan Yin
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
- North University of China , Shanglan Road, Taiyuan, 030051, Shanxi Province, People's Republic of China
| | - Meimei Wang
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Xiaoyan Wang
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Bao Qiu
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Anxiang Wei
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Zaicheng Sun
- Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, School of Environmental and Energy, Beijing University of Technology , Beijing, 100124, People's Republic of China
| | - Zhaoping Liu
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Jin Zhu
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Ya-Jun Cheng
- Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo, 315201, Zhejiang Province, People's Republic of China
- Department of Materials, University of Oxford , Parks Road, OX1 3PH, Oxford, U.K
| |
Collapse
|
29
|
Xie M, Gray SR. Silica scaling in forward osmosis: From solution to membrane interface. WATER RESEARCH 2017; 108:232-239. [PMID: 27836176 DOI: 10.1016/j.watres.2016.10.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/05/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Membrane silica scaling hinders sustainable water production. Understanding silica scaling mechanisms provides options for better membrane process management. In this study, we elucidated silica scaling mechanisms on an asymmetric cellulose triacetate (CTA) membrane and polyamide thin-film composite (TFC) membrane. Scaling filtration showed that TFC membrane was subjected to more severe water flux decline in comparison with the CTA membrane, together with different scaling layer morphology. To elucidate the silica scaling mechanisms, silica species in the aqueous solution were characterised by mass spectrometry as well as light scattering. Key thermodynamic parameters of silica surface nucleation on the CTA and TFC membranes were estimated to compare the surface nucleation energy barrier. In addition, high resolution X-ray photoelectron spectroscopy resolved the chemical origin of the silica-membrane interaction via identifying the specific silicon bonds. These results strongly support that silica scaling in the CTA membrane was driven by the aggregation of mono-silicic acid into large silica aggregates, followed by the deposition from bulk solution onto the membrane surface; by contrast, silica polymerised on the TFC membrane surface where mono-silicic acid interacted with TFC membrane surface, which was followed by silica surface polymerisation.
Collapse
Affiliation(s)
- Ming Xie
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, Victoria 8001, Australia.
| | - Stephen R Gray
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, Victoria 8001, Australia
| |
Collapse
|
30
|
Uehira K, Okada A, Shiomi H, Wakasugi T, Kadono K. Preparation of Porous Silicon from Porous Silica Glass via Magnesiothermic Reduction. CHEM LETT 2016. [DOI: 10.1246/cl.160544] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
31
|
Yan F, Lin X, Su B. Vertically ordered silica mesochannel films: electrochemistry and analytical applications. Analyst 2016; 141:3482-95. [DOI: 10.1039/c6an00146g] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Vertically-aligned mesoporous silica films were used for electrochemical sensing and molecular separation in terms of molecular size, charge and lipophilicity.
Collapse
Affiliation(s)
- Fei Yan
- Institute of Microanalytical Systems
- Department of Chemistry
- Zhejiang University
- 310058 Hangzhou
- China
| | - Xingyu Lin
- Institute of Microanalytical Systems
- Department of Chemistry
- Zhejiang University
- 310058 Hangzhou
- China
| | - Bin Su
- Institute of Microanalytical Systems
- Department of Chemistry
- Zhejiang University
- 310058 Hangzhou
- China
| |
Collapse
|