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Harun-Ur-Rashid M, Jahan I, Foyez T, Imran AB. Bio-Inspired Nanomaterials for Micro/Nanodevices: A New Era in Biomedical Applications. MICROMACHINES 2023; 14:1786. [PMID: 37763949 PMCID: PMC10536921 DOI: 10.3390/mi14091786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/14/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023]
Abstract
Exploring bio-inspired nanomaterials (BINMs) and incorporating them into micro/nanodevices represent a significant development in biomedical applications. Nanomaterials, engineered to imitate biological structures and processes, exhibit distinctive attributes such as exceptional biocompatibility, multifunctionality, and unparalleled versatility. The utilization of BINMs demonstrates significant potential in diverse domains of biomedical micro/nanodevices, encompassing biosensors, targeted drug delivery systems, and advanced tissue engineering constructs. This article thoroughly examines the development and distinctive attributes of various BINMs, including those originating from proteins, DNA, and biomimetic polymers. Significant attention is directed toward incorporating these entities into micro/nanodevices and the subsequent biomedical ramifications that arise. This review explores biomimicry's structure-function correlations. Synthesis mosaics include bioprocesses, biomolecules, and natural structures. These nanomaterials' interfaces use biomimetic functionalization and geometric adaptations, transforming drug delivery, nanobiosensing, bio-inspired organ-on-chip systems, cancer-on-chip models, wound healing dressing mats, and antimicrobial surfaces. It provides an in-depth analysis of the existing challenges and proposes prospective strategies to improve the efficiency, performance, and reliability of these devices. Furthermore, this study offers a forward-thinking viewpoint highlighting potential avenues for future exploration and advancement. The objective is to effectively utilize and maximize the application of BINMs in the progression of biomedical micro/nanodevices, thereby propelling this rapidly developing field toward its promising future.
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Affiliation(s)
- Mohammad Harun-Ur-Rashid
- Department of Chemistry, International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh;
| | - Israt Jahan
- Department of Cell Physiology, Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan;
| | - Tahmina Foyez
- Department of Pharmacy, United International University, Dhaka 1212, Bangladesh;
| | - Abu Bin Imran
- Department of Chemistry, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
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2
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Nandy A, Mukherjee S. A Bioinspired Light Harvesting System in Aqueous Medium: Highly Efficient Energy Transfer through the Self Assembly of β-Sheet Nanostructures of Poly-d-Lysine. J Phys Chem Lett 2022; 13:6701-6710. [PMID: 35848986 DOI: 10.1021/acs.jpclett.2c01309] [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: 06/15/2023]
Abstract
Nature has beautifully assembled its light harvesting pigments within protein scaffolds, which ensures a very high energy transfer. Designing a highly efficient artificial bioinspired light harvesting system (LHS) thus requires the nanoscale spatial orientation and electronic control of the associated chromophores. Although DNA has been used as a scaffold to organize chromophores, proteins or polypeptides, however, are very rarely explored. Here, we have developed a highly efficient, artificial, bioinspired LHS using polypeptide (poly-d-lysine, PDL) nanostructures making use of their β-sheet structure in an aqueous alkaline medium. The chromophores used herein are compatible for an energy transfer process and are nonfluorescent in an aqueous medium but exhibit high fluorescence intensity when bound to the nanostructure of PDL. The close proximity of the chromophores results in an energy transfer efficiency of ∼92% besides generating white light emission at a particular molar ratio between the chromophores.
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Affiliation(s)
- Atanu Nandy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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3
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Moreira MIF, Almeida J, Leite A, Lobo Ferreira AIMC, Santos LMNBF, Silva AMG, Rangel M. Ohmic heating-assisted synthesis and characterization of Zn(II), Cu(II) and Pd(II) complexes of heterocyclic-fused chlorins. Dalton Trans 2022; 51:3520-3530. [PMID: 35142773 DOI: 10.1039/d1dt04032d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Chlorins are highly interesting compounds due to their spectroscopic properties in both UV-Vis and NIR regions. Upon coordination to a metal ion, the corresponding metallochlorins exhibit more valuable physicochemical properties that enable a broader range of applications, such as in photodynamic therapy (PDT), water splitting catalysis, optical sensor devices and dye-sensitized solar cells. Synthetic chemistry has been in a continuous quest to fulfil most green chemistry requirements through the development of efficient reactions. Being a heating process that does not depend on heat transfer to the reaction medium, ohmic heating accomplishes the mentioned requirements and allows a fast and uniform heating regime thanks to the ionic conductivity of the reaction medium. Herein, we report the metallation of pyrrolidine- and isoxazolidine-fused chlorins with Zn(II), Cu(II) and Pd(II) salts by ohmic heating, using non-toxic aqueous solutions, and their corresponding physico-chemical characterization. All pyrrolidine-fused chlorins showed higher yields, when compared with isoxazolidine ones. From the thermogravimetric analysis performed it is possible to infer that the metal enhances the steadiness of the macrocycle, making it easier to cause the thermal decomposition of the pyrrolidine- and isoxazolidine-fused chlorins. The Zn(II) complexes showed high absorption in the NIR spectral region, a low fluorescence quantum yield and a short excited singlet state, which indicate the high efficiency of intersystem crossing to the triplet state, making them very promising candidates as photosensitizers for PDT.
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Affiliation(s)
- Maria I F Moreira
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - José Almeida
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - Andreia Leite
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - Ana I M C Lobo Ferreira
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007, Porto, Portugal
| | - Luís M N B F Santos
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007, Porto, Portugal
| | - Ana M G Silva
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - Maria Rangel
- LAQV/REQUIMTE, Instituto de Ciências Biomédicas de Abel Salazar, 4099-003 Porto, Portugal
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Supramolecular chlorophyll aggregates inspired from specific light-harvesting antenna “chlorosome”: Static nanostructure, dynamic construction process, and versatile application. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2020. [DOI: 10.1016/j.jphotochemrev.2020.100385] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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5
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Mondal B, Bera R, Ghosh S, Nayak SK, Patra A. Investigation of Morphology-Controlled Ultrafast Relaxation Processes of Aggregated Porphyrin. Chemphyschem 2020; 21:2196-2205. [PMID: 33462915 DOI: 10.1002/cphc.202000482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/22/2020] [Indexed: 11/10/2022]
Abstract
Here, we have synthesized rod and flake shaped morphology of porphyrin aggregates from 5, 10, 15, 20-tetra (4-n-octyloxyphenyl) porphyrin (4-opTPP) molecule which are evident from scanning electron microscopy (SEM). The formation of J-type aggregation is evident from steady state and time-resolved fluorescence spectroscopic studies. Ultrafast transient absorption spectroscopic studies reveal that the excited state lifetime is controlled by the morphology and the time constant for S1→S0 relaxation changes from 3.05 ps to 744 ps with changing the shape from rod to flake, respectively. In spite of similar exciton coupling energy in both the aggregates, the flake shaped aggregates undergo a faster exciton relaxation process and the non-radiative relaxation channels are found to depend on the shape of aggregates. The fundamental understanding of morphology controlled ultrafast relaxation processes of aggregated porphyrin is important for designing efficient light harvesting devices.
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Affiliation(s)
- Bodhisatwa Mondal
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Rajesh Bera
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Srijon Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Sandip K Nayak
- Bio-organic Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Amitava Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.,Institute of Nano Science and Technology, Habitat Centre, Sector 64, Phase 10, Mohali, 160062, India
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6
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Munir A, Joya KS, Ul Haq T, Babar NUA, Hussain SZ, Qurashi A, Ullah N, Hussain I. Metal Nanoclusters: New Paradigm in Catalysis for Water Splitting, Solar and Chemical Energy Conversion. CHEMSUSCHEM 2019; 12:1517-1548. [PMID: 30485695 DOI: 10.1002/cssc.201802069] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/20/2018] [Indexed: 05/12/2023]
Abstract
A sustainable future demands innovative breakthroughs in science and technology today, especially in the energy sector. Earth-abundant resources can be explored and used to develop renewable and sustainable resources of energy to meet the ever-increasing global energy demand. Efficient solar-powered conversion systems exploiting inexpensive and robust catalytic materials for the photo- and photo-electro-catalytic water splitting, photovoltaic cells, fuel cells, and usage of waste products (such as CO2 ) as chemical fuels are appealing solutions. Many electrocatalysts and nanomaterials have been extensively studied in this regard. Low overpotentials, catalytic stability, and accessibility remain major challenges. Metal nanoclusters (NCs, ≤3 nm) with dimensions between molecule and nanoparticles (NPs) are innovative materials in catalysis. They behave like a "superatom" with exciting size- and facet-dependent properties and dynamic intrinsic characteristics. Being an emerging field in recent scientific endeavors, metal NCs are believed to replace the natural photosystem II for the generation of green electrons in a viable way to facilitate the challenging catalytic processes in energy-conversion schemes. This Review aims to discuss metal NCs in terms of their unique physicochemical properties, possible synthetic approaches by wet chemistry, and various applications (mostly recent advances in the electrochemical and photo-electrochemical water splitting cycle and the oxygen reduction reaction in fuel cells). Moreover, the significant role that MNCs play in dye-sensitized solar cells and nanoarrays as a light-harvesting antenna, the electrochemical reduction of CO2 into fuels, and concluding remarks about the present and future perspectives of MNCs in the frontiers of surface science are also critically reviewed.
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Affiliation(s)
- Akhtar Munir
- Department of Chemistry and Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore-, 54792, Pakistan
| | - Khurram Saleem Joya
- Department of Chemistry, University of Engineering and Technology (UET-Lahore), GT Road, Lahore-, 54890, Punjab, Punjab, Pakistan
- Department of Chemistry, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Tanveer Ul Haq
- Department of Chemistry and Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore-, 54792, Pakistan
| | - Noor-Ul-Ain Babar
- Department of Chemistry, University of Engineering and Technology (UET-Lahore), GT Road, Lahore-, 54890, Punjab, Punjab, Pakistan
| | - Syed Zajif Hussain
- Department of Chemistry and Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore-, 54792, Pakistan
| | - Ahsanulhaq Qurashi
- Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Najeeb Ullah
- US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), University of Engineering & Technology (UET-Peshawar),Jamrud Road, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan
| | - Irshad Hussain
- Department of Chemistry and Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore-, 54792, Pakistan
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Joya KS, Ul Ain Babar N, Gilani SR, Yasmeen F, Sarfaraz M, Ikram S, Colak SG, Ocakoglu K, Ince M. Heterogeneous Electrocatalysts for Efficient Water Oxidation Derived from Metal Phthalocyanine. ChemistrySelect 2018. [DOI: 10.1002/slct.201802089] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Khurram Saleem Joya
- Department of Energy Conversion and Storage Technical University of Denmark; Frederiksborgvej 399 4000 Roskilde Denmark
- Department of Chemistry University of Engineering and Technology; GT Road 54890 Lahore Pakistan
| | - Noor Ul Ain Babar
- Department of Chemistry University of Engineering and Technology; GT Road 54890 Lahore Pakistan
| | - Syeda Robina Gilani
- Department of Chemistry University of Engineering and Technology; GT Road 54890 Lahore Pakistan
| | - Farhat Yasmeen
- Department of Chemistry University of Engineering and Technology; GT Road 54890 Lahore Pakistan
| | | | - Sehrish Ikram
- Department of Chemistry University of Engineering and Technology; GT Road 54890 Lahore Pakistan
| | - Süleyman Gökhan Colak
- Advanced Technology Research & Application Center; Mersin University; Ciftlikkoy Campus; TR-33343 Yenisehir Mersin Turkey
| | - Kasim Ocakoglu
- Advanced Technology Research & Application Center; Mersin University; Ciftlikkoy Campus; TR-33343 Yenisehir Mersin Turkey
- Department of Energy Systems Engineering, Faculty of Technology Mersin University; TR-33480 Tarsus Mersin Turkey
| | - Mine Ince
- Department of Energy Systems Engineering, Faculty of Technology Mersin University; TR-33480 Tarsus Mersin Turkey
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8
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Maity A, Dey A, Gangopadhyay M, Das A. Water induced morphological transformation of a poly(aryl ether) dendron amphiphile: helical fibers to nanorods, as light-harvesting antenna systems. NANOSCALE 2018; 10:1464-1473. [PMID: 29303192 DOI: 10.1039/c7nr07663k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Self-assembly of suitable molecular building blocks is an efficient and convenient approach to generate nanomaterials with various morphologies and functions. Moreover, understanding the nature of molecules and controlling factors of their self-assembly process is crucial in fundamental aspects of molecular self-assembly which provide insights into the design of new assemblies with functional nano-architectures. To this end, the present study reports water induced self-assembled multifaceted morphology formation and the plausible pathway of the morphology transformation of a single poly(aryl ether) dendron amphiphile 1(D). In THF, 1(D) self-assembles into helical fibers. However, with an increase in the water fraction in its THF solution, the morphology changes to nanorods through an intermediate scroll-up pathway of exfoliated fibers. The nanorod formation and transformation of 1(D) are investigated using various microscopy and spectroscopy techniques, which indicate that it has highly ordered multilayered arrays of 1(D) molecules. Finally, these multilayered arrays of 1(D) nanorods are exploited for constructing a model light-harvesting system via the incorporation of small quantities of two newly designed BODIPY based molecules as energy acceptors and 1(D) as an antenna chromophore.
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Affiliation(s)
- Arunava Maity
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India.
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9
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Almeida J, Silva AMN, Rebelo SLH, Cunha-Silva L, Rangel M, de Castro B, Leite A, Silva AMG. Synthesis and coordination studies of 5-(4′-carboxyphenyl)-10,15,20-tris(pentafluorophenyl)porphyrin and its pyrrolidine-fused chlorin derivative. NEW J CHEM 2018. [DOI: 10.1039/c7nj05165d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An efficient strategy was developed to obtain carboxyphenyl porphyrin, chlorins and metal complexes, with potential applications in photonics and biology.
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Affiliation(s)
- José Almeida
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - André M. N. Silva
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - Susana L. H. Rebelo
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - Luís Cunha-Silva
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - Maria Rangel
- LAQV/REQUIMTE
- Instituto de Ciências Biomédicas de Abel Salazar
- 4099-003 Porto
- Portugal
| | - Baltazar de Castro
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - Andreia Leite
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
| | - Ana M. G. Silva
- LAQV/REQUIMTE
- Departamento de Química e Bioquímica, Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
- Portugal
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10
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Self-adaptive Bioinspired Hummingbird-wing Stimulated Triboelectric Nanogenerators. Sci Rep 2017; 7:17143. [PMID: 29215064 PMCID: PMC5719441 DOI: 10.1038/s41598-017-17453-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/24/2017] [Indexed: 11/10/2022] Open
Abstract
Bio-inspired technologies have remarkable potential for energy harvesting from clean and sustainable energy sources. Inspired by the hummingbird-wing structure, we propose a shape-adaptive, lightweight triboelectric nanogenerator (TENG) designed to exploit the unique flutter mechanics of the hummingbird for small-scale wind energy harvesting. The flutter is confined between two surfaces for contact electrification upon oscillation. We investigate the flutter mechanics on multiple contact surfaces with several free-standing and lightweight electrification designs. The flutter driven-TENGs are deposited on simplified wing designs to match the electrical performance with variations in wind speed. The hummingbird TENG (H-TENG) device weighed 10 g, making it one of the lightest TENG harvesters in the literature. With a six TENG network, the hybrid design attained a 1.5 W m−2 peak electrical output at 7.5 m/s wind speed with an approximately linear increase in charge rate with the increased number of TENG harvesters. We demonstrate the ability of the H-TENG networks to operate Internet of Things (IoT) devices from sustainable and renewable energy sources.
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Harputlu E, Ocakoglu K, Yakuphanoglu F, Tarnowska A, Gryko DT. Physical properties of self-assembled zinc chlorin nanowires for artificial light-harvesting materials. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.nanoso.2017.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Kutz A, Gröhn F. Improving Photocatalytic Activity: Versatile Polyelectrolyte - Photosensitizer Assemblies for Methyl Viologen Reduction. ChemistrySelect 2017. [DOI: 10.1002/slct.201601844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anne Kutz
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander Universität Erlangen-Nürnberg; Egerlandstraße 3 91058 Erlangen Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander Universität Erlangen-Nürnberg; Egerlandstraße 3 91058 Erlangen Germany
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13
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Dizge N, Gonuldas H, Ozay Y, Ates H, Ocakoglu K, Harputlu E, Yildirimcan S, Unyayar A. Synthesis and performance of antifouling and self-cleaning polyethersulfone/graphene oxide composite membrane functionalized with photoactive semiconductor catalyst. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:670-685. [PMID: 28192361 DOI: 10.2166/wst.2016.543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study was performed to synthesize membranes of polyethersulfone (PES) blended with graphene oxide (GO) and PES blended with GO functionalized with photoactive semiconductor catalyst (TiO2 and ZnO). The antifouling and self-cleaning properties of composite membranes were also investigated. The GO was prepared from natural graphite powder by oxidation method at low temperature. TiO2 and ZnO nanopowders were synthesized by anhydrous sol-gel method. The surface of TiO2 and ZnO nanopowders was modified by a surfactant (myristic acid) to obtain a homogeneously dispersed mixture in a solvent, and then GO was functionalized by loading with these metal oxide nanopowders. The PES membranes blended with GO and functionalized GO into the casting solution were prepared via phase inversion method and tested for their antifouling as well as self-cleaning properties. The composite membranes were synthesized as 14%wt. of PES polymer with three different concentrations (0.5, 1.0, and 2.0%wt.) of GO, GO-TiO2, and GO-ZnO. The functionalization of membranes improved hydrophilicity property of membranes as compared to neat PES membrane. However, the lowest flux was obtained by functionalized membranes with GO-TiO2. The results showed that functionalized membranes demonstrated better self-cleaning property than neat PES membrane. Moreover, the flux recovery rate of functionalized membranes over five cycles was higher than that of neat membrane.
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Affiliation(s)
- Nadir Dizge
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Hakan Gonuldas
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Yasin Ozay
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Hasan Ates
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
| | - Kasim Ocakoglu
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey; Department of Energy Systems Engineering, Faculty of Technology, Mersin University, Mersin 33480, Turkey
| | - Ersan Harputlu
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey
| | - Saadet Yildirimcan
- Advanced Technology, Research and Application Center, Mersin University, Mersin 33343, Turkey; Faculty of Engineering, Department of Electrical-Electronics Engineering, Toros University, Mersin 33140, Turkey
| | - Ali Unyayar
- Department of Environmental Engineering, Mersin University, Yenisehir, Mersin 33343, Turkey E-mail:
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14
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Joya KS, Ahmad Z, Joya YF, Garcia-Esparza AT, de Groot HJM. Efficient electrochemical water oxidation in neutral and near-neutral systems with a nanoscale silver-oxide catalyst. NANOSCALE 2016; 8:15033-40. [PMID: 27472834 DOI: 10.1039/c6nr03147a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In electrocatalytic water splitting systems pursuing for renewable energy using sunlight, developing robust, stable and easily accessible materials operating under mild chemical conditions is pivotal. We present here a unique nanoparticulate type silver-oxide (AgOx-NP) based robust and highly stable electrocatalyst for efficient water oxidation. The AgOx-NP is generated in situ in a HCO3(-)/CO2 system under benign conditions. Micrographs show that they exhibit a nanoscale box type squared nano-bipyramidal configuration. The oxygen generation is initiated at low overpotential, and a sustained O2 evolution current density of >1.1 mA cm(-2) is achieved during prolonged-period water electrolysis. The AgOx-NP electrocatalyst performs exceptionally well in metal-ion free neutral or near-neutral carbonate, phosphate and borate buffers relative to recently reported Co-oxide and Ni-oxide based heterogeneous electrocatalysts, which are unstable in metal-ion free electrolytes and tend to deactivate with time and lose catalytic performance during long-term experimental tests.
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Affiliation(s)
- Khurram S Joya
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands. and Department of Chemistry, University of Engineering and Technology, GT Road 54890 Lahore, Punjab, Pakistan. and Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Zahoor Ahmad
- Department of Chemistry, University of Engineering and Technology, GT Road 54890 Lahore, Punjab, Pakistan.
| | - Yasir F Joya
- Faculty of Materials Science and Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhaw, Pakistan
| | - Angel T Garcia-Esparza
- Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Huub J M de Groot
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
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15
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Ocakoglu K, Er O, Kiyak G, Lambrecht FY, Gunduz C, Kayabasi C. 131I–Zn–Chlorophyll derivative photosensitizer for tumor imaging and photodynamic therapy. Int J Pharm 2015; 493:96-101. [DOI: 10.1016/j.ijpharm.2015.07.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 10/23/2022]
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Tamiaki H, Nagai T, Tanaka T, Tatebe T. Synthesis and optical properties of chlorin monomer, dimer and trimer on an amino nitrogen atom. Bioorg Med Chem 2015. [DOI: 10.1016/j.bmc.2015.06.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Purchase RL, de Groot HJM. Biosolar cells: global artificial photosynthesis needs responsive matrices with quantum coherent kinetic control for high yield. Interface Focus 2015; 5:20150014. [PMID: 26052428 PMCID: PMC4410567 DOI: 10.1098/rsfs.2015.0014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This contribution discusses why we should consider developing artificial photosynthesis with the tandem approach followed by the Dutch BioSolar Cells consortium, a current operational paradigm for a global artificial photosynthesis project. We weigh the advantages and disadvantages of a tandem converter against other approaches, including biomass. Owing to the low density of solar energy per unit area, artificial photosynthetic systems must operate at high efficiency to minimize the land (or sea) area required. In particular, tandem converters are a much better option than biomass for densely populated countries and use two photons per electron extracted from water as the raw material into chemical conversion to hydrogen, or carbon-based fuel when CO2 is also used. For the average total light sum of 40 mol m−2 d−1 for The Netherlands, the upper limits are many tons of hydrogen or carbon-based fuel per hectare per year. A principal challenge is to forge materials for quantitative conversion of photons to chemical products within the physical limitation of an internal potential of ca 2.9 V. When going from electric charge in the tandem to hydrogen and back to electricity, only the energy equivalent to 1.23 V can be stored in the fuel and regained. A critical step is then to learn from nature how to use the remaining difference of ca 1.7 V effectively by triple use of one overpotential for preventing recombination, kinetic stabilization of catalytic intermediates and finally generating targeted heat for the release of oxygen. Probably the only way to achieve this is by using bioinspired responsive matrices that have quantum–classical pathways for a coherent conversion of photons to fuels, similar to what has been achieved by natural selection in evolution. In appendix A for the expert, we derive a propagator that describes how catalytic reactions can proceed coherently by a convergence of time scales of quantum electron dynamics and classical nuclear dynamics. We propose that synergy gains by such processes form a basis for further progress towards high efficiency and yield for a global project on artificial photosynthesis. Finally, we look at artificial photosynthesis research in The Netherlands and use this as an example of how an interdisciplinary approach is beneficial to artificial photosynthesis research. We conclude with some of the potential societal consequences of a large-scale roll out of artificial photosynthesis.
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Affiliation(s)
- R L Purchase
- Biophysical Organic Chemistry/Solid State NMR , Leiden Institute of Chemistry , PO Box 9502, 2300 RA Leiden , The Netherlands
| | - H J M de Groot
- Biophysical Organic Chemistry/Solid State NMR , Leiden Institute of Chemistry , PO Box 9502, 2300 RA Leiden , The Netherlands
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Joya KS, Sala X. In situ Raman and surface-enhanced Raman spectroscopy on working electrodes: spectroelectrochemical characterization of water oxidation electrocatalysts. Phys Chem Chem Phys 2015; 17:21094-103. [DOI: 10.1039/c4cp05053c] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This perspective article gives an overview of the current developments regarding the use of in situ Raman and surface-enhanced Raman spectroscopy on working electrodes for probing the fate of molecular and heterogeneous catalysts during electrochemical water oxidation.
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Affiliation(s)
- Khurram S. Joya
- Leiden Institute of Chemistry
- Leiden University Einsteinweg 55
- Leiden
- The Netherlands
- Department of Chemistry
| | - Xavier Sala
- Departament de Química
- Universitat Autònoma de Barcelona
- Cerdanyola del Vallès
- 08193 Barcelona
- Spain
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