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Yu S, Choi G, Choy JH. Multifunctional Layered Double Hydroxides for Drug Delivery and Imaging. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1102. [PMID: 36985996 PMCID: PMC10058705 DOI: 10.3390/nano13061102] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
Two-dimensional nanomaterials, particularly layered double hydroxides (LDHs), have been widely applied in the biomedical field owing to their biocompatibility, biodegradability, controllable drug release/loading ability, and enhanced cellular permeability. Since the first study analyzing intercalative LDHs in 1999, numerous studies have investigated their biomedical applications, including drug delivery and imaging; recent research has focused on the design and development of multifunctional LDHs. This review summarizes the synthetic strategies and in-vivo and in-vitro therapeutic actions and targeting properties of single-function LDH-based nanohybrids and recently reported (from 2019 to 2023) multifunctional systems developed for drug delivery and/or bio-imaging.
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Affiliation(s)
- Seungjin Yu
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
| | - Goeun Choi
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
- College of Science and Technology, Dankook University, Cheonan 31116, Republic of Korea
| | - Jin-Ho Choy
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
- Division of Natural Sciences, The National Academy of Sciences, Seoul 06579, Republic of Korea
- Department of Pre-Medical Course, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea
- International Research Frontier Initiative (IRFI), Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Gujral HS, Singh G, Baskar AV, Guan X, Geng X, Kotkondawar AV, Rayalu S, Kumar P, Karakoti A, Vinu A. Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2022; 23:76-119. [PMID: 35309252 PMCID: PMC8928826 DOI: 10.1080/14686996.2022.2029686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 05/19/2023]
Abstract
The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.
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Affiliation(s)
- Harpreet Singh Gujral
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Arun V. Baskar
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Xun Geng
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Abhay V. Kotkondawar
- Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India
| | - Sadhana Rayalu
- Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
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A coating strategy to achieve effective local charge separation for photocatalytic coevolution. Proc Natl Acad Sci U S A 2021; 118:2023552118. [PMID: 33558245 DOI: 10.1073/pnas.2023552118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Semiconductors of narrow bandgaps and high quantum efficiency have not been broadly utilized for photocatalytic coevolution of H2 and O2 via water splitting. One prominent issue is to develop effective protection strategies, which not only mitigate photocorrosion in an aqueous environment but also facilitate charge separation. Achieving local charge separation is especially challenging when these reductive and oxidative sites are placed only nanometers apart compared to two macroscopically separated electrodes in a photoelectrochemical cell. Additionally, the driving force of charge separation, namely the energetic difference in the barrier heights across the two type of sites, is small. Herein, we used conformal coatings attached by nanoscale cocatalysts to transform two classes of tunable bandgap semiconductors, i.e., CdS and GaInP2, into stable and efficient photocatalysts. We used hydrogen evolution and redox-mediator oxidation for model study, and further constructed a two-compartment solar fuel generator that separated stoichiometric H2 and O2 products. Distinct from the single charge-transfer direction reported for conventional protective coatings, the coating herein allows for concurrent injection of photoexcited electrons and holes through the coating. The energetic difference between reductive and oxidative catalytic sites was regulated by selectivity and local kinetics. Accordingly, the charge separation behavior was validated using numerical simulations. Following this design principle, the CdS/TiO2/Rh@CrOx photocatalysts evolved H2 while oxidizing reversible polysulfide redox mediators at a maximum rate of 90.6 μmol⋅h-1⋅cm-2 by stacking three panels. Powered by a solar cell, the redox-mediated solar water-splitting reactor regenerated the polysulfide repeatedly and achieved solar-to-hydrogen efficiency of 1.7%.
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Dong B, Cui J, Qi Y, Zhang F. Nanostructure Engineering and Modulation of (Oxy)Nitrides for Application in Visible-Light-Driven Water Splitting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004697. [PMID: 34085732 DOI: 10.1002/adma.202004697] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/22/2021] [Indexed: 06/12/2023]
Abstract
(Oxy)nitride-based nanophotocatalysts have been extensively investigated for solar-to-chemical conversion, and not only allow wide spectral utilization to achieve high theoretical energy conversion efficiency but also exhibit suitable conduction and valence band positions for robust reduction and oxidation of water. During the past decades, a few reviews on the research progress in designing and synthesizing new visible-light-responsive semiconductors for various applications in solar-to-chemical conversion have been published. However, those on the effects of their bulk and composite (surface/interface) nanostructures on basic processes as well as solar water splitting performances to produce hydrogen are still limited. In this review, a brief introduction on the relationship between the nanostructure photocatalytic properties is included. Three main processes of solar water splitting are involved, allowing the elucidation of the correlation with the nanostructural properties of the photocatalyst such as surface/interface, size, morphology, and bulk structure. Subsequently, the development of methodologies and strategies for modulating the bulk and composite structures to improve the efficiencies of the basic processes, particularly charge separation, is summarized in detail. Finally, the prospects of (oxy)nitride-based photocatalysts such as controlled synthesis, modulation of 1D/2D morphology, exposed facet regulation, heterostructure formation, theoretical simulation, and time- and space-resolved spectroscopy are discussed.
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Affiliation(s)
- Beibei Dong
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Junyan Cui
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yu Qi
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Fuxiang Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Zhang Y, Zhang Y, Li X, Dai J, Song F, Cao X, Lyu X, Crittenden JC. Enhanced Photocatalytic Activity of SiC-Based Ternary Graphene Materials: A DFT Study and the Photocatalytic Mechanism. ACS OMEGA 2019; 4:20142-20151. [PMID: 31815214 PMCID: PMC6893965 DOI: 10.1021/acsomega.9b01832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/10/2019] [Indexed: 06/10/2023]
Abstract
A graphene-like semiconductor composite is one of the most promising photocatalyst that does not use noble metals. These composites have excellent photocatalytic properties and have attracted great attention for water splitting. Here, a facile method called the hydrothermal method was used to prepare graphene oxide (GO)/SiC/MoS2 composites. Under visible-light irradiation, the GO/SiC/MoS2 composite had excellent photocatalytic production of hydrogen from water splitting. In particular, the catalyst added 8 wt % of Mo weight yielded the highest quantum of 20.45% at 400-700 nm of wavelength. A positive synergistic effect between the layered GO and MoS2 components contributed to the enhanced photoactivity of the SiC particles. The synergistic effect reduced the recombination of photogenerated holes and electrons, enhanced the rate of electron transfer, and provided more reaction active sites for water splitting. The interactions among SiC, GO, and MoS2 were investigated using a density functional theory. The calculations showed that the relative positions between graphene only slightly affect the stability of the interface, and the MoS2 layers have a great influence. The photocatalytic mechanism was also discussed, and electron transfer was predicted.
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Affiliation(s)
- Yuyan Zhang
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - Yan Zhang
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - Xue Li
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - Jianhong Dai
- School
of Materials Science and Engineering, Harbin
Institute of Technology at Weihai, 2 West Wenhua Road, Weihai 264209, China
| | - Fengjuan Song
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - Xiaoqiang Cao
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - Xianjun Lyu
- School
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
| | - John C. Crittenden
- School
of Civil and Environmental Engineering, Georgia Institute and Technology, 828 W. Peachtree Street, Suite 320, Atlanta, Georgia 30332-0595, United States
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