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Goldaeva KV, Pleshakova TO, Ivanov YD. Nanowire-based biosensors for solving biomedical problems. BIOMEDITSINSKAIA KHIMIIA 2024; 70:304-314. [PMID: 39324195 DOI: 10.18097/pbmc20247005304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
The review considers modern achievements and prospects of using nanowire biosensors, principles of their operation, methods of fabrication, and the influence of the Debye effect, which plays a key role in improving the biosensor characteristics. Special attention is paid to the practical application of such biosensors for the detection of a variety of biomolecules, demonstrating their capabilities and potential in the detection of a wide range of biomarkers of various diseases. Nanowire biosensors also show excellent results in such areas as early disease diagnostics, patient health monitoring, and personalized medicine due to their high sensitivity and specificity. Taking into consideration their high efficiency and diverse applications, nanowire-based biosensors demonstrate significant promise for commercialization and widespread application in medicine and related fields, making them an important area for future research and development.
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Affiliation(s)
- K V Goldaeva
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | - Yu D Ivanov
- Institute of Biomedical Chemistry, Moscow, Russia
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2
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Korotcenkov G. II-VI Semiconductor-Based Conductometric Gas Sensors: Is There a Future for These Sensors? SENSORS (BASEL, SWITZERLAND) 2024; 24:3861. [PMID: 38931646 PMCID: PMC11207366 DOI: 10.3390/s24123861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/03/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
A review of the state of research in the development of conductometric gas sensors based on II-VI semiconductors is given. It was shown that II-VI compounds indeed have properties that are necessary for the development of highly efficient gas sensors. In this case, to achieve the required parameters, all approaches developed for metal oxides can be used. At the same time, during a detailed review, it was concluded that sensors based on II-VI compounds have no prospects for appearing on the gas sensor market. The main obstacle is the instability of the surface state, which leads to poor reproducibility of parameters and drift of sensor characteristics during operation.
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Affiliation(s)
- Ghenadii Korotcenkov
- Department of Physics and Engineering, Moldova State University, Str. Mateevici 60, MD-2009 Chisinau, Moldova
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3
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Hasan MH, McCrum IT. pKa as a Predictive Descriptor for Electrochemical Anion Adsorption. Angew Chem Int Ed Engl 2024; 63:e202313580. [PMID: 38340075 DOI: 10.1002/anie.202313580] [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: 09/19/2023] [Revised: 02/09/2024] [Accepted: 02/09/2024] [Indexed: 02/12/2024]
Abstract
The adsorption of anions onto metal surfaces is important in many applications including effective (electro)catalyst design, metal surface modification, and contaminant removal in wastewater treatment. In electrocatalysis, anions can be both reactive intermediates or site-blocking spectators, where their adsorption strength therefore dictates the rate of reaction. In this work, we have measured the adsorption energy of a series of carboxylic acids on a Pt (111) single-crystal electrode surface from aqueous solution. We find that the adsorption strength of the carboxylate anion is linearly correlated with its acid-dissociation constant (pKa) and therefore the heterolytic O-H bond dissociation strength in solution. Using density functional theory modeling, we split the anion adsorption energy into a sum of the adsorption energy and electron affinity of a neutral (carboxyl) radical. Surprisingly, the adsorption energy of the carboxyl radicals are similar and therefore the large difference in electron affinity is what dictates anion adsorption strength; the greater the cost in energy to remove the electron from the anion upon adsorption, the weaker its binding. Therefore, at least within a class of anions with similar structure and surface binding atoms, both electron affinity and acidity are predictive descriptors of adsorption strength.
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Affiliation(s)
- Mohammad H Hasan
- Department of Chemical and Biomolecular Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699
| | - Ian T McCrum
- Department of Chemical and Biomolecular Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699
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4
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Kong X, Ru L, Ge J, Deng Y, Zhang PK, Wang Y. Covalent inorganic complexes enabled zinc blende to wurtzite phase changes in CdSe nanoplatelets. Chem Sci 2023; 14:13244-13253. [PMID: 38023525 PMCID: PMC10664457 DOI: 10.1039/d3sc04296k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Phase changes in colloidal semiconductor nanocrystals (NCs) are essential in material design and device applications. However, the transition pathways have yet to be sufficiently studied, and a better understanding of the underlying mechanisms is needed. In this work, a complete ligand-assisted phase transition from zinc blende (ZB) to wurtzite (WZ) is observed in CdSe nanoplatelets (NPLs). By monitoring with in situ absorption spectra along with electrospray ionization mass spectrometry (ESI-MS), we demonstrated that the transition process is a ligand-assisted covalent inorganic complex (CIC)-mediated phase transition pathway, which involves three steps, ligand exchange on ZB CdSe NPLs (Step 1), dissolution of NPLs to form CICs (Step 2), and conversion of CdSe-CIC assemblies to WZ CdSe NPLs (Step 3). In particular, CICs can be directly anisotropically grown to WZ CdSe NPL without other intermediates, following pseudo-first-order kinetics (kobs = 9.17 × 10-5 s-1). Furthermore, we demonstrated that CICs are also present and play an essential role in the phase transition of ZnS NPLs from WZ to ZB structure. This study proposes a new crystal transformation pathway and elucidates a general phase-transition mechanism, facilitating precise functional nanomaterial design.
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Affiliation(s)
- Xinke Kong
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Lin Ru
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Junjun Ge
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yalei Deng
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Pan-Ke Zhang
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Yuanyuan Wang
- State Key Laboratory of Coordination Chemistry, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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5
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Lin CH, Hu L, Guan X, Kim J, Huang CY, Huang JK, Singh S, Wu T. Electrode Engineering in Halide Perovskite Electronics: Plenty of Room at the Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108616. [PMID: 34995372 DOI: 10.1002/adma.202108616] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Contact engineering is a prerequisite for achieving desirable functionality and performance of semiconductor electronics, which is particularly critical for organic-inorganic hybrid halide perovskites due to their ionic nature and highly reactive interfaces. Although the interfaces between perovskites and charge-transporting layers have attracted lots of attention due to the photovoltaic and light-emitting diode applications, achieving reliable perovskite/electrode contacts for electronic devices, such as transistors and memories, remains as a bottleneck. Herein, a critical review on the elusive nature of perovskite/electrode interfaces with a focus on the interfacial electrochemistry effects is presented. The basic guidelines of electrode selection are given for establishing non-polarized interfaces and optimal energy level alignment for perovskite materials. Furthermore, state-of-the-art strategies on interface-related electrode engineering are reviewed and discussed, which aim at achieving ohmic transport and eliminating hysteresis in perovskite devices. The role and multiple functionalities of self-assembled monolayers that offer a unique approach toward improving perovskite/electrode contacts are also discussed. The insights on electrode engineering pave the way to advancing stable and reliable perovskite devices in diverse electronic applications.
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Affiliation(s)
- Chun-Ho Lin
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Xinwei Guan
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jiyun Kim
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Chien-Yu Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jing-Kai Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Simrjit Singh
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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6
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Nakazawa T, Kim D, Oshima Y, Sato H, Park J, Kim H. Synthesis and Application of AgBiS 2 and Ag 2S Nanoinks for the Production of IR Photodetectors. ACS OMEGA 2021; 6:20710-20718. [PMID: 34396016 PMCID: PMC8359150 DOI: 10.1021/acsomega.1c03463] [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: 07/02/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Nanoinks composed of quantum dots (QDs) are applied in light-receiving devices and light-emitting devices such as solar cells and displays. However, since the most widely used QDs, PbS and CdS, are toxic and environmentally concerning, alternative materials need to be developed. We synthesized and analyzed Ag chalcogenide nanoparticles, including AgBiS2 and Ag2S nanoparticles, which are eco-friendly materials. AgBiS2 and Ag2S QD films were prepared by spin-coating nanoparticle solutions and subsequent heat treatment. The effects of the heat treatment on residual ligands and photoluminescence were determined by surface analysis. The photocurrent response of the AgBiS2 and Ag2S QD films was measured in the near-infrared region, and the effect of the heat treatment temperature was investigated. The results indicate that AgBiS2 and Ag2S are prospective materials for near-infrared photodetectors.
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Affiliation(s)
- Tatsuya Nakazawa
- School
of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
- Metallic
Materials Development Department, TANAKA
KIKINZOKU KOGYO K.K., Isehara Technical Center, 28 Suzukawa, Isehara, Kanagawa 259-1146, Japan
| | - Donghyun Kim
- School
of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Yusuke Oshima
- Chemical
Materials Development Department, TANAKA
KIKINZOKU KOGYO K.K., Tsukuba Technical Center, 22 Wadai, Tsukuba, Ibaraki 300-4247, Japan
| | - Hiroki Sato
- Chemical
Materials Development Department, TANAKA
KIKINZOKU KOGYO K.K., Tsukuba Technical Center, 22 Wadai, Tsukuba, Ibaraki 300-4247, Japan
| | - Jusang Park
- School
of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Hyungjun Kim
- School
of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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7
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Tamski M, Ansermet JP, Roussel C. Stabilization of p-GaAs electrode surfaces in organic solvent by bi-phenyl rings for spin dependent electron transfer studies. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Abou Taka A, Babin MC, Sheng X, DeVine JA, Neumark DM, Hratchian HP. Unveiling the coexistence of cis- and trans-isomers in the hydrolysis of ZrO2: A coupled DFT and high-resolution photoelectron spectroscopy study. J Chem Phys 2020; 153:244308. [DOI: 10.1063/5.0037636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Ali Abou Taka
- Department of Chemistry & Chemical Biology, Center for Chemical Computation and Theory, University of California, Merced, California 95343, USA
| | - Mark C. Babin
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Xianghai Sheng
- Department of Chemistry & Chemical Biology, Center for Chemical Computation and Theory, University of California, Merced, California 95343, USA
| | - Jessalyn A. DeVine
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Daniel M. Neumark
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Hrant P. Hratchian
- Department of Chemistry & Chemical Biology, Center for Chemical Computation and Theory, University of California, Merced, California 95343, USA
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9
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Pálmai M, Kim EB, Schnee VP, Snee PT. Charge carrier pairing can impart efficient reduction efficiency to core/shell quantum dots: applications for chemical sensing. NANOSCALE 2020; 12:23052-23060. [PMID: 33179684 DOI: 10.1039/d0nr06329k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Semiconductor quantum dots (QDs) are bright fluorophores that have significant utility for imaging and sensing applications. Core QDs are often employed in chemosensing via redox processes that modulates their fluorescence in the presence of an analyte. However, such particles lack robust surface passivation and generally contain a sizable portion of nonfluorescent QDs, which is detrimental to the detection limit. We investigated an approach to "turn on" non-fluorescent core QDs by lightly overcoating them with a thin shell of a higher bandgap semiconductor. The shell augments the population of sensing chromophores and increases the emission lifetime; however, it simultaneously mollifies redox processes that are responsible for analyte sensitivity to begin with. This balancing act was successfully applied to enhance the sensitivity of CdZnS/ZnS QDs towards 2,4,6-trinitrotoluene (TNT). Unexpectedly, it was found that CdZnS/ZnS QDs with very thick shells retained substantial sensitivity to TNT. This observation may be due to close coupling of the reduced substrate with the QD hole that is enabled by the near-degeneracy of holes in the core CdZnS and ZnS shell. The ability of core/shell QDs to retain substantial reducing power may have implications for other applications that can benefit from the enhanced stability of robust core/shell nanomaterials.
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Affiliation(s)
- Marcell Pálmai
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607-7061, USA.
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10
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Watanabe K, Sakata A, Saijo Y, Baba T. pH-sensitive GaInAsP photonic crystal fractal band-edge laser. OPTICS LETTERS 2020; 45:6202-6205. [PMID: 33186950 DOI: 10.1364/ol.410122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
The light emission characteristics of GaInAsP semiconductors in aqueous solutions are modified by the surface charge, depending on the balance between radiative and nonradiative recombination. This Letter demonstrates the application of a GaInAsP photonic crystal band-edge laser in sensing a solution pH, which reflects the surface charge. The sensitivity is enhanced by a hybrid of fractal honeycomb and close-packed structures with a large surface-to-volume ratio and a high quality factor (Q), which allows a low threshold carrier density. We experimentally obtained a maximum pH sensitivity of 1.9 dB/pH near the threshold and a signal-to-noise ratio of 52/pH (pH resolution of 0.019) at a pump power 2.4 times the threshold where the intensity noise diminished.
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11
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Choudhury S, Nautiyal R, Thakkar DK, Betty C. Thickness dependence of nanocrystalline tin oxide thin films in capacitive biosensor characterization. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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12
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Wang T, Fu Y, Jin L, Deng S, Pan D, Dong L, Jin S, Huang L. Phenethylammonium Functionalization Enhances Near-Surface Carrier Diffusion in Hybrid Perovskites. J Am Chem Soc 2020; 142:16254-16264. [PMID: 32845129 DOI: 10.1021/jacs.0c04377] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ti Wang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- School of Physics and Technology and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Yongping Fu
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Linrui Jin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Shibin Deng
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Dongxu Pan
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Liang Dong
- School of Physics and Technology and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Song Jin
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Libai Huang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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13
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Lipsky F, Lacerda LHDS, de Lazaro SR, Longo E, Andrés J, San-Miguel MA. Unraveling the relationship between exposed surfaces and the photocatalytic activity of Ag 3PO 4: an in-depth theoretical investigation. RSC Adv 2020; 10:30640-30649. [PMID: 35516045 PMCID: PMC9056335 DOI: 10.1039/d0ra06045c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2022] Open
Abstract
Over the years, the possibility of using solar radiation in photocatalysis or photodegradation processes has attracted remarkable interest from scientists around the world. In such processes, due to its electronic properties, Ag3PO4 is one of the most important semiconductors. This work delves into the photocatalytic activity, stability, and reactivity of Ag3PO4 surfaces by comparing plane waves with projector augmented wave and localized Gaussian basis set simulations, at the atomic level. The results indicate that the (110) surface, in agreement with previous experimental reports, displays the most suitable characteristics for photocatalytic activity due to its high reactivity, i.e. the presence of a large amount of undercoordinated Ag cations and a high value work function. Beyond the innovative results, this work shows a good synergy between both kinds of DFT approaches.
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Affiliation(s)
- Felipe Lipsky
- State University of Campinas Campinas São Paulo Brazil
| | | | | | - Elson Longo
- CDMF-UFSCAR, Federal University of São Carlos São Carlos São Paulo Brazil
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14
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Kumaresan N, Sinthiya MMA, Ramamurthi K, Ramesh Babu R, Sethuraman K. Visible light driven photocatalytic activity of ZnO/CuO nanocomposites coupled with rGO heterostructures synthesized by solid-state method for RhB dye degradation. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2019.03.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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15
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Sun Q, Gao H, Zhang X, Yao X, Xu S, Zheng K, Chen P, Lu W, Zou J. High-quality epitaxial wurtzite structured InAs nanosheets grown in MBE. NANOSCALE 2020; 12:271-276. [PMID: 31819937 DOI: 10.1039/c9nr08429k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we have grown epitaxial wurtzite structured InAs nanosheets using Au catalysts on a GaAs{111}B substrate by molecular beam epitaxy. Through detailed electron microscopy characterization studies on grown nanosheets, it was found that these wurtzite structured InAs nanosheets grew epitaxially on the GaAs{111}B substrate, with {0001[combining macron]} catalyst/nanosheet interfaces and extensive {112[combining macron]0} surfaces. It was anticipated that the epitaxially grown InAs nanosheet can be triggered by a high supersaturation in catalysts, leading to an inclined growth leaving the substrate surface, and driven by the small lattice mismatch between the nanosheets and the substrate, with the orientation relationship of (0001[combining macron])InAs//(112[combining macron])GaAs. This study provides insights into achieving epitaxial free-standing III-V nanosheet growth.
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Affiliation(s)
- Qiang Sun
- Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Han Gao
- Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Xutao Zhang
- State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai 200083, China and University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Xiaomei Yao
- Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia and State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai 200083, China and University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Shengduo Xu
- Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Kun Zheng
- Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China
| | - Pingping Chen
- State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai 200083, China
| | - Wei Lu
- State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai 200083, China and School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jin Zou
- Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia and Centre for Microscopy and Microanalysis, The University of Queensland, St Lucia, Queensland 4072, Australia.
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16
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Sun Q, Gao H, Zhang X, Yao X, Zheng K, Chen P, Lu W, Zou J. Free-Standing InAs Nanobelts Driven by Polarity in MBE. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44609-44616. [PMID: 31684720 DOI: 10.1021/acsami.9b15575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we demonstrated the Au-catalyzed growth of free-standing defect-free zinc-blende structured InAs nanobelts on the GaAs {111}B substrate by molecular beam epitaxy. Through detailed morphological, chemical, and structural characterizations using advanced electron microscopy, it was found that the nanobelts grew along the ⟨001̅⟩ direction, induced by Au catalysts via vapor-solid-solid mechanism, with features of {001̅} catalyst/nanobelt interfaces and extensive {11̅0} surfaces. The formation of the belt-shaped morphology of our nanostructures resulted from a faster lateral growth rate along the ±[110] direction than that along the ±[11̅0] direction, driven by polarity. This study provides insights into understanding the growth of free-standing zinc-blende structured <001̅> InAs nanobelts.
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Affiliation(s)
| | | | - Xutao Zhang
- State Key Laboratory for Infrared Physics , Shanghai Institute of Technical Physics, Chinese Academy of Sciences , 500 Yutian Road , Shanghai 200083 , China
- University of Chinese Academy of Sciences , No. 19A Yuquan Road , Beijing 100049 , China
| | - Xiaomei Yao
- State Key Laboratory for Infrared Physics , Shanghai Institute of Technical Physics, Chinese Academy of Sciences , 500 Yutian Road , Shanghai 200083 , China
- University of Chinese Academy of Sciences , No. 19A Yuquan Road , Beijing 100049 , China
| | - Kun Zheng
- Institute of Microstructure and Properties of Advanced Materials , Beijing University of Technology , Beijing 100124 , China
| | - Pingping Chen
- State Key Laboratory for Infrared Physics , Shanghai Institute of Technical Physics, Chinese Academy of Sciences , 500 Yutian Road , Shanghai 200083 , China
| | - Wei Lu
- State Key Laboratory for Infrared Physics , Shanghai Institute of Technical Physics, Chinese Academy of Sciences , 500 Yutian Road , Shanghai 200083 , China
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17
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Yu J, Søndergaard-Pedersen F, Mamakhel A, Lamagni P, Brummerstedt Iversen B. Three-dimensional morphology of anatase nanocrystals obtained from supercritical flow synthesis with industrial grade TiOSO4 precursor. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2019; 75:1086-1095. [DOI: 10.1107/s2052520619012733] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/13/2019] [Indexed: 11/10/2022]
Abstract
Anatase TiO2 (a-TiO2) nanocrystals are vital in catalytic applications both as catalysts (e.g. photodegradation) and as a carrier material (e.g. NOx removal from exhaust). The synthesis of a-TiO2 nanocrystals and their properties have been heavily scrutinized, but there exists a clear gap between the scientific literature, and the scale and price expectation of industrial application. Here it is demonstrated that the industrially most attractive Ti precursor, titanyl sulfate (TiOSO4), can be combined with the green, scalable and fast supercritical flow method to produce phase pure and highly crystalline a-TiO2 nanoparticles with high specific surface area. Control of the nanocrystal morphology is important since it is known that certain facets substantially promote catalytic activity. It is, however, in itself challenging to determine nanocrystal morphology to provide a rational basis for the synthesis control. Here we advocate the use of advanced Rietveld refinement of powder X-ray diffraction data including anisotropic size broadening models in aiding to establish the sample three-dimensional morphology. This relatively quick and robust method assists in overcoming the often encountered ambiguity inherent in two-dimensional to three-dimensional reconstruction of selected particle morphologies with transmission electron microscopy and tomography techniques.
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18
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Watanabe K, Baba T. Enhanced pH sensitivity in photoluminescence of GaInAsP semiconductor photonic crystal slab. OPTICS EXPRESS 2019; 27:24978-24988. [PMID: 31510378 DOI: 10.1364/oe.27.024978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
Semiconductor ion sensors that respond to the surface electric charge in a solution are used for chemical and biological sensing. Photonic sensors exploiting such a response in the photoluminescence intensity enable a simple system consisting only of a photopump source and a photodiode; however, their sensitivity is usually lower than that of electric sensors, such as ion-sensitive field-effect transistors. This study employed a GaInAsP semiconductor honeycomb photonic crystal slab as a photonic sensor structure and obtained a high ion sensitivity. The surface recombination, which is the origin of the ion sensitivity, was enhanced by increasing the surface-to-volume ratio and moderately suppressing the photopump level. Nevertheless, a sufficient signal-to-noise ratio was maintained by improving the light extraction efficiency. Moreover, a high pH sensitivity of 0.27 dB/pH, which is six times that without photonic crystals, was obtained and resulted in a pH resolution of 0.011 at pH ∼7 comparable with that of electric sensors.
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19
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Liu K, Zhou H, Wang P, Fang J, Li H, Cao M, Gao X, Qiu X, Liu M. Bismuth vanadate single crystal particles modified with tungsten for efficient photoeletrochemical water oxidation. Catal Today 2019. [DOI: 10.1016/j.cattod.2019.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Abstract
Design and modification of interfaces, always a critical issue for semiconductor devices, has become a primary tool to harness the full potential of halide perovskite (HaP)-based optoelectronics, including photovoltaics and light-emitting diodes. In particular, the outstanding improvements in HaP solar cell performance and stability can be primarily ascribed to a careful choice of the interfacial layout in the layer stack. In this review, we describe the unique challenges and opportunities of these approaches (section 1). For this purpose, we first elucidate the basic physical and chemical properties of the exposed HaP thin film and crystal surfaces, including topics such as surface termination, surface reactivity, and electronic structure (section 2). This is followed by discussing experimental results on the energetic alignment processes at the interfaces between the HaP and transport and buffer layers. This section includes understandings reached as well as commonly proposed and applied models, especially the often-questionable validity of vacuum level alignment, the importance of interface dipoles, and band bending as the result of interface formation (section 3). We follow this by elaborating on the impact of the interface formation on device performance, considering effects such as chemical reactions and surface passivation on interface energetics and stability. On the basis of these concepts, we propose a roadmap for the next steps in interfacial design for HaP semiconductors (section 4), emphasizing the importance of achieving control over the interface energetics and chemistry (i.e., reactivity) to allow predictive power for tailored interface optimization.
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Affiliation(s)
- Philip Schulz
- Institut Photovoltaïque d'Île-de-France (IPVF) , 91120 Palaiseau , France.,CNRS , Institut Photovoltaı̈que d'Île de France (IPVF) , UMR 9006 , 91120 Palaiseau , France.,National Center for Photovoltaics , National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - David Cahen
- Department of Materials and Interfaces , Weizmann Institute of Science , Rehovot 76100 , Israel
| | - Antoine Kahn
- Department of Electrical Engineering , Princeton University , Princeton , New Jersey 08544 , United States
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21
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Ambhorkar P, Wang Z, Ko H, Lee S, Koo KI, Kim K, Cho DID. Nanowire-Based Biosensors: From Growth to Applications. MICROMACHINES 2018; 9:mi9120679. [PMID: 30572645 PMCID: PMC6316191 DOI: 10.3390/mi9120679] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/15/2018] [Accepted: 12/17/2018] [Indexed: 01/02/2023]
Abstract
Over the past decade, synthesized nanomaterials, such as carbon nanotube, nanoparticle, quantum dot, and nanowire, have already made breakthroughs in various fields, including biomedical sensors. Enormous surface area-to-volume ratio of the nanomaterials increases sensitivity dramatically compared with macro-sized material. Herein we present a comprehensive review about the working principle and fabrication process of nanowire sensor. Moreover, its applications for the detection of biomarker, virus, and DNA, as well as for drug discovery, are reviewed. Recent advances including self-powering, reusability, sensitivity in high ionic strength solvent, and long-term stability are surveyed and highlighted as well. Nanowire is expected to lead significant improvement of biomedical sensor in the near future.
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Affiliation(s)
- Pranav Ambhorkar
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | - Zongjie Wang
- Department of Electrical and Computer Engineering, Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3M2, Canada.
| | - Hyuongho Ko
- Department of Electronics, Chungnam National University, Daejeon 34134, Korea.
| | - Sangmin Lee
- Department of Biomedical Engineering, Kyung Hee University, Yongin 17104, Korea.
| | - Kyo-In Koo
- Department of Biomedical Engineering, University of Ulsan, Ulsan 44610, Korea.
| | - Keekyoung Kim
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | - Dong-Il Dan Cho
- ASRI/ISRC, Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea.
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22
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Feng W, Song C, Hu X, Liu S, Yi R, Yang X, Yan H, Hou X. Highly Efficient Charge Collection in Bulk-Heterojunction Organic Solar Cells by Anomalous Hole Transfer and Improved Interfacial Contact. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28256-28261. [PMID: 30117726 DOI: 10.1021/acsami.8b08390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The dilute donor-fullerene bulk heterojunction (BHJ) has been proven to be an efficient architecture of organic solar cells. However, the hole-extraction pathway and the origin of the high open-circuit voltage ( VOC) in this peculiar architecture remains elusive. Direct evidence is provided here that the photogenerated holes can be extracted via the acceptor phase even under the operating conditions. Meanwhile VOC is found to be closely correlated with the surface composition at the MoO3/BHJ interface. Extending these findings into device optimization, more than 37% enhancement is achieved in a prototype BHJ device. These results evoke renewed insight into the underlying physics in organic solar cells.
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Affiliation(s)
- Wen Feng
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Chaoyu Song
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Xiaofeng Hu
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Shaobo Liu
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Ruichen Yi
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Xinju Yang
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Hugen Yan
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
| | - Xiaoyuan Hou
- State Key Laboratory of Surface Physics and Department of Physics , Fudan University , Shanghai 200433 , China
- Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) , Fudan University , Shanghai 200433 , China
- Collaborative Innovation Center of Advanced Microstructures , Nanjing 210093 , China
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23
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Ghosh S, Manna L. The Many "Facets" of Halide Ions in the Chemistry of Colloidal Inorganic Nanocrystals. Chem Rev 2018; 118:7804-7864. [PMID: 30062881 PMCID: PMC6107855 DOI: 10.1021/acs.chemrev.8b00158] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Indexed: 12/11/2022]
Abstract
Over the years, scientists have identified various synthetic "handles" while developing wet chemical protocols for achieving a high level of shape and compositional complexity in colloidal nanomaterials. Halide ions have emerged as one such handle which serve as important surface active species that regulate nanocrystal (NC) growth and concomitant physicochemical properties. Halide ions affect the NC growth kinetics through several means, including selective binding on crystal facets, complexation with the precursors, and oxidative etching. On the other hand, their presence on the surfaces of semiconducting NCs stimulates interesting changes in the intrinsic electronic structure and interparticle communication in the NC solids eventually assembled from them. Then again, halide ions also induce optoelectronic tunability in NCs where they form part of the core, through sheer composition variation. In this review, we describe these roles of halide ions in the growth of nanostructures and the physical changes introduced by them and thereafter demonstrate the commonality of these effects across different classes of nanomaterials.
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Affiliation(s)
- Sandeep Ghosh
- McKetta
Department of Chemical Engineering, The
University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Liberato Manna
- Department
of Nanochemistry, Istituto Italiano di Tecnologia
(IIT), via Morego 30, I-16163 Genova, Italy
- Kavli Institute
of Nanoscience and Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
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24
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He Y, Hou S, Yang L, Zhang F, Zou G. Adjustable Electrochemiluminescence from Highly Passivated CdTe/CdS Nanocrystals by Simple Surface Decoration with Counterions. Chemistry 2018; 24:9592-9597. [DOI: 10.1002/chem.201800953] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Indexed: 01/12/2023]
Affiliation(s)
- Yupeng He
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 China
| | - Shifeng Hou
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 China
- National Engineering and Technology Research Center for Colloidal Materials; Shandong University; Jinan 250100 China
| | - Liqiong Yang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 China
| | - Fang Zhang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 China
| | - Guizheng Zou
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 China
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25
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Yang F, Wang F, Guo Z. Characteristics of binary WO 3@CuO and ternary WO 3@PDA@CuO based on impressive sensing acetone odor. J Colloid Interface Sci 2018; 524:32-41. [PMID: 29627670 DOI: 10.1016/j.jcis.2018.04.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/01/2018] [Accepted: 04/03/2018] [Indexed: 01/07/2023]
Abstract
A series of biomimetic electronic nose nanomaterials of WO3, WO3@PDA, WO3@PDA@CuO, WO3@CuO and CuO were prepared by a facile method and their microstructures, surface chemical composition and sensing ability for acetone odor were investigated systematically by a variety of technologies. The WO3@PDA@CuO and WO3@CuO particles are in nano-sized shape, about 20 nm. The sensing ability to different concentrations acetone odor (50, 100 and 200 ppm) is addressed. The effect of different sensitivity definitions (Rg/Ra or |Ra - Rg|/Ra × 100%) on the comparison of experiment results is discussed. The WO3@CuO sensing material shows the best sensing performance of all the sensors, being independent of concentration or sensitivity definitions. These results provide novel insights into the design and preparation of composite electronic nose sensing nanomaterials.
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Affiliation(s)
- Fuchao Yang
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials and Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Fengyi Wang
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials and Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials and Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
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26
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Nazemi E, Hassen WM, Frost EH, Dubowski JJ. Growth of Escherichia coli on the GaAs (001) surface. Talanta 2018; 178:69-77. [PMID: 29136882 DOI: 10.1016/j.talanta.2017.08.097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/23/2017] [Accepted: 08/24/2017] [Indexed: 10/18/2022]
Abstract
Detection of pathogenic bacteria and monitoring their susceptibility to antibiotics are of great importance in the fields of medicine, pharmaceutical research, as well as water and food industries. In order to develop a photonic biosensor for detection of bacteria by taking advantage of photoluminescence (PL) of GaAs-based devices, we have investigated the capture and growth of Escherichia coli K12 on bare and biofunctionalized surfaces of GaAs (001) - a material of interest for capping different semiconductor microstructures. The results were compared with the capture and growth of Escherichia coli K12 on Au surfaces that have commonly been applied for studying a variety of biological and biochemical reactions. We found that neither GaAs nor Au-coated glass wafers placed in Petri dishes inoculated with bacteria inhibited bacterial growth in nutrient agar, regardless of the wafers being bare or biofunctionalized. However, the capture and growth of bacteria on biofunctionalized surfaces of GaAs and Au wafers kept in a flow cell and exposed to different concentrations of bacteria and growth medium revealed that the initial surface coverage and the subsequent bacterial growth were dependent on the biofunctionalization architecture, with antibody-coated surfaces clearly being most efficient in capturing bacteria and offering better conditions for growth of bacteria. We have observed that, as long as the GaAs wafers were exposed to bacterial suspensions at concentrations of at least 105 CFU/mL, bacteria could grow on the surface of wafers, regardless of the type of biofunctionalization architecture used to capture the bacteria. These results provide important insight towards the successful development of GaAs-based devices designed for photonic monitoring of bacterial reactions to different biochemical environments.
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Affiliation(s)
- Elnaz Nazemi
- Interdisciplinary Institute for Technological Innovation (3IT), CNRS UMI-3463, Department of Electrical and Computer Engineering, Faculty of Engineering, Université de Sherbrooke, 3000, boul. de l'Université, Sherbrooke, Québec, Canada J1K 0A5.
| | - Walid M Hassen
- Interdisciplinary Institute for Technological Innovation (3IT), CNRS UMI-3463, Department of Electrical and Computer Engineering, Faculty of Engineering, Université de Sherbrooke, 3000, boul. de l'Université, Sherbrooke, Québec, Canada J1K 0A5.
| | - Eric H Frost
- Interdisciplinary Institute for Technological Innovation (3IT), CNRS UMI-3463, Department of Electrical and Computer Engineering, Faculty of Engineering, Université de Sherbrooke, 3000, boul. de l'Université, Sherbrooke, Québec, Canada J1K 0A5; Department of Microbiology and Infectiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Avenue North, Sherbrooke, Québec, Canada J1H 5N4.
| | - Jan J Dubowski
- Interdisciplinary Institute for Technological Innovation (3IT), CNRS UMI-3463, Department of Electrical and Computer Engineering, Faculty of Engineering, Université de Sherbrooke, 3000, boul. de l'Université, Sherbrooke, Québec, Canada J1K 0A5.
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27
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Wolska-Pietkiewicz M, Tokarska K, Grala A, Wojewódzka A, Chwojnowska E, Grzonka J, Cywiński PJ, Kruczała K, Sojka Z, Chudy M, Lewiński J. Safe-by-Design Ligand-Coated ZnO Nanocrystals Engineered by an Organometallic Approach: Unique Physicochemical Properties and Low Toxicity toward Lung Cells. Chemistry 2018; 24:4033-4042. [DOI: 10.1002/chem.201704207] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 12/25/2022]
Affiliation(s)
| | - Katarzyna Tokarska
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 00-664 Warsaw Poland
| | - Agnieszka Grala
- Institute of Physical Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Anna Wojewódzka
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 00-664 Warsaw Poland
| | - Elżbieta Chwojnowska
- Institute of Physical Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Justyna Grzonka
- Institute of Physical Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
- Faculty of Materials Science and Engineering; Warsaw University of Technology; Wołoska 141 02-507 Warsaw Poland
| | - Piotr J. Cywiński
- Institute of Physical Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Krzysztof Kruczała
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Cracow Poland
| | - Zbigniew Sojka
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Cracow Poland
| | - Michał Chudy
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 00-664 Warsaw Poland
| | - Janusz Lewiński
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 00-664 Warsaw Poland
- Institute of Physical Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
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28
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Peng Y, Mao YG, Kan PF, Liu JY, Fang Z. Controllable synthesis and photoreduction performance towards Cr(vi) of BiOCl microrods with exposed (110) crystal facets. NEW J CHEM 2018. [DOI: 10.1039/c8nj03323d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BiOCl microrod exposed (110) facets was synthesized via a simple hydrothermal method using sodium citrate as capping agent. It exhibits outstanding photoreduction performance towards Cr(vi) at neutral and acid condition.
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Affiliation(s)
- Yin Peng
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Yan Ge Mao
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Peng Fei Kan
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Jin Yun Liu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Zhen Fang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
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29
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Janissen R, Sahoo PK, Santos CA, da Silva AM, von Zuben AAG, Souto DEP, Costa ADT, Celedon P, Zanchin NIT, Almeida DB, Oliveira DS, Kubota LT, Cesar CL, Souza APD, Cotta MA. InP Nanowire Biosensor with Tailored Biofunctionalization: Ultrasensitive and Highly Selective Disease Biomarker Detection. NANO LETTERS 2017; 17:5938-5949. [PMID: 28895736 DOI: 10.1021/acs.nanolett.7b01803] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Electrically active field-effect transistors (FET) based biosensors are of paramount importance in life science applications, as they offer direct, fast, and highly sensitive label-free detection capabilities of several biomolecules of specific interest. In this work, we report a detailed investigation on surface functionalization and covalent immobilization of biomarkers using biocompatible ethanolamine and poly(ethylene glycol) derivate coatings, as compared to the conventional approaches using silica monoliths, in order to substantially increase both the sensitivity and molecular selectivity of nanowire-based FET biosensor platforms. Quantitative fluorescence, atomic and Kelvin probe force microscopy allowed detailed investigation of the homogeneity and density of immobilized biomarkers on different biofunctionalized surfaces. Significantly enhanced binding specificity, biomarker density, and target biomolecule capture efficiency were thus achieved for DNA as well as for proteins from pathogens. This optimized functionalization methodology was applied to InP nanowires that due to their low surface recombination rates were used as new active transducers for biosensors. The developed devices provide ultrahigh label-free detection sensitivities ∼1 fM for specific DNA sequences, measured via the net change in device electrical resistance. Similar levels of ultrasensitive detection of ∼6 fM were achieved for a Chagas Disease protein marker (IBMP8-1). The developed InP nanowire biosensor provides thus a qualified tool for detection of the chronic infection stage of this disease, leading to improved diagnosis and control of spread. These methodological developments are expected to substantially enhance the chemical robustness, diagnostic reliability, detection sensitivity, and biomarker selectivity for current and future biosensing devices.
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Affiliation(s)
- Richard Janissen
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
- Kavli Institute of Nanoscience, Delft University of Technology , 2629 HZ Delft, The Netherlands
| | - Prasana K Sahoo
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Clelton A Santos
- Center for Molecular Biology and Genetic Engineering, Biology Institute, University of Campinas , Campinas, São Paulo 13083-875, Brazil
| | - Aldeliane M da Silva
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Antonio A G von Zuben
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Denio E P Souto
- Chemistry Institute, University of Campinas , Campinas, São Paulo 13083-970, Brazil
| | - Alexandre D T Costa
- Oswaldo Cruz Foundation, Carlos Chagas Institute , Curitiba, Paraná 81310-020 Brazil
| | - Paola Celedon
- Molecular Biology Institute of Paraná , Curitiba, Paraná 81310-020 Brazil
| | - Nilson I T Zanchin
- Oswaldo Cruz Foundation, Carlos Chagas Institute , Curitiba, Paraná 81310-020 Brazil
| | - Diogo B Almeida
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Douglas S Oliveira
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Lauro T Kubota
- Chemistry Institute, University of Campinas , Campinas, São Paulo 13083-970, Brazil
| | - Carlos L Cesar
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
| | - Anete P de Souza
- Center for Molecular Biology and Genetic Engineering, Biology Institute, University of Campinas , Campinas, São Paulo 13083-875, Brazil
| | - Monica A Cotta
- "Gleb Wataghin" Physics Institute, University of Campinas , Campinas, São Paulo 13083-859, Brazil
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30
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Saeidi S, Awan KM, Sirbu L, Dolgaleva K. Nonlinear photonics on-a-chip in III-V semiconductors: quest for promising material candidates. APPLIED OPTICS 2017; 56:5532-5541. [PMID: 29047512 DOI: 10.1364/ao.56.005532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/06/2017] [Indexed: 06/07/2023]
Abstract
We propose several designs of nonlinear optical waveguides based on quaternary III-V semiconductors AlGaAsSb and InGaAsP. These semiconductor materials have been widely used for laser sources. Their nonlinear optical properties, however, yet remain unexplored, while the materials definitely hold promise for nonlinear photonics on-a-chip. The latter argument is based on the fact that III-V compounds tend to exhibit high values of the nonlinear optical susceptibilities, while the nonlinear absorption in these materials can be minimized in the wavelength range of interest through a proper selection of the material composition. We present the modal analysis for the designed waveguide structures and show that the effective mode area much less than 1 μm2 can be achieved through a design optimization in each of the two compounds. We also present specific waveguide designs that demonstrate zero dispersion at the wavelengths of interest. The designed AlGaAsSb and InGaAsP waveguides are thus expected to demonstrate high values of the nonlinear coefficient and efficient nonlinear optical interactions.
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31
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Huang Z, Tang ML. Designing Transmitter Ligands That Mediate Energy Transfer between Semiconductor Nanocrystals and Molecules. J Am Chem Soc 2017. [DOI: 10.1021/jacs.6b08783] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zhiyuan Huang
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Ming L. Tang
- Department of Chemistry, University of California, Riverside, California 92521, United States
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32
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33
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Acharyya K, Chowdhury A, Mondal B, Chakraborty S, Mukherjee PS. Building Block Dependent Morphology Modulation of Cage Nanoparticles and Recognition of Nitroaromatics. Chemistry 2017; 23:8482-8490. [DOI: 10.1002/chem.201700885] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Koushik Acharyya
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India)
| | - Aniket Chowdhury
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India)
| | - Bijnaneswar Mondal
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India)
| | - Shubhadip Chakraborty
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India)
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India)
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Wang HI, Lu H, Nagata Y, Bonn M, Cánovas E. Dipolar Molecular Capping in Quantum Dot-Sensitized Oxides: Fermi Level Pinning Precludes Tuning Donor-Acceptor Energetics. ACS NANO 2017; 11:4760-4767. [PMID: 28388028 DOI: 10.1021/acsnano.7b01064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Reducing the donor-acceptor excess energy (ΔGET) associated with electron transfer (ET) across quantum dot (QD)/oxide interfaces can boost photoconversion efficiencies in sensitized solar cell and fuel architectures. One proposed path for engineering ΔGET losses at interfaces refers to the tuning of sensitizer workfunction by exploiting QD dipolar molecular capping treatments. However, the change in workfunction per debye in QD solids has been reported to be ∼20-fold larger when compared to the effect achieved in QD-sensitized architectures. The origin behind the modest workfunction tunability in QD-sensitized oxides remains unclear. Here, we investigate the interplay between QD dipolar molecular capping, interfacial QD-oxide ET rates, and QD workfunction in PbS QD/SnO2-sensitized interfaces. We find that interfacial QD-to-oxide ET is invariant to both the nature and strength of the specific QD dipolar capping treatment. Photoelectron spectroscopy reveals that the resolved invariance in ET rates is the result of a lack of QD workfunction (and hence ΔGET) tuning, despite effective molecular dipolar capping. We therefore conclude that Fermi level pinning precludes tuning donor-acceptor energetics by dipolar molecular capping in strongly coupled quantum dot-sensitized oxides.
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Affiliation(s)
- Hai I Wang
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
- Graduate School of Material Science in Mainz, University of Mainz , Staudingerweg 9, 55128 Mainz, Germany
| | - Hao Lu
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Yuki Nagata
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Mischa Bonn
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Enrique Cánovas
- Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
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35
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Varley JB, He X, Rockett A, Lordi V. Stability of Cd 1-xZn xO yS 1-y Quaternary Alloys Assessed with First-Principles Calculations. ACS APPLIED MATERIALS & INTERFACES 2017; 9:5673-5677. [PMID: 28176522 DOI: 10.1021/acsami.6b14415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
One route to decreasing the absorption in CdS buffer layers in Cu(In,Ga)Se2 and Cu2ZnSn(S,Se)4 thin-film photovoltaics is by alloying. Here we use first-principles calculations based on hybrid functionals to assess the energetics and stability of quaternary Cd, Zn, O, and S (Cd1-xZnxOyS1-y) alloys within a regular solution model. Our results identify that full miscibility of most Cd1-xZnxOyS1-y compositions and even binaries like Zn(O,S) is outside typical photovoltaic processing conditions. The results suggest that the tendency for phase separation of the oxysulfides may drive the nucleation of other phases such as sulfates that have been increasingly observed in oxygenated CdS and ZnS.
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Affiliation(s)
- Joel B Varley
- Materials Science Division, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
| | - Xiaoqing He
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Angus Rockett
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Vincenzo Lordi
- Materials Science Division, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
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Pearce BL, Berg NG, Rahn MS, Ivanisevic A. In situ and ex situ functionalization of nanostructured gallium oxy-hydroxide with a porphyrin dye. SCANNING 2016; 38:671-683. [PMID: 26992077 DOI: 10.1002/sca.21315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 05/21/2023]
Abstract
The surface attachment of a porphyrin dye to nanocrystalline GaOOH was performed using two routes of solution-based functionalization. The first method of functionalization utilized an in situ incorporation of dissolved porphyrin salt in solution during the microwave synthesis step. Additionally, synthesized GaOOH nanorods were mixed in porphyrin solution after the microwave process to make an ex situ GaOOH/TTP-PO-3 . X-ray photoelectron spectroscopy confirmed the presence of expected surface species and provided evidence of increased surface coverage of TTP-PO3 on GaOOH in the ex situ- GaOOH/TTP-PO3 as compared to the in situ one. Size and morphology changes were investigated using SEM and, along with analysis of XRD, the in situ samples showed larger crystallite sizes. This was confirmed with PL due to the higher bandgap energy evident in the ex situ GaOOH/TTP-PO3 compared to the in situ sample. A stability study was performed using fluorescence spectroscopy which indicated no leaching of porphyrin from the in situ GaOOH/TTP-PO3 . However, porphyrin leaching was evident from the ex situ GaOOH/TTP-PO3 sample. The stability of the in situ GaOOH/TTP-PO3 makes it attractive for a number of interfacial applications. SCANNING 38:671-683, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Brady L Pearce
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina
| | - Nora G Berg
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina
| | - Matthew S Rahn
- Department of Materials Science and Engineering, Pennsylvania State University, State College, Pennsylvania
| | - Albena Ivanisevic
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina
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38
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Preda L, Anastasescu M, Dobrescu G, Negrila C, Lazarescu V. Role of the dithiolate backbone on the passivation of p-GaAs(111)B surface. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.03.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Chang C, Teng F, Liu Z. Fully Understanding the Photochemical Properties of Bi2O2(CO3)1-xSx Nanosheets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3811-3819. [PMID: 27043132 DOI: 10.1021/acs.langmuir.6b00149] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The photochemical properties of crystal facets with obviously distinct atomic and geometric structures have been studied widely to date. However, little work has been performed for two or more facets with very similar atomic and geometric structures. Herein, we mainly report the photochemical properties of {001} and {100} facets of Bi2O2(CO3)1-xSx with very similar atomic and geometric structures. The simulation and experimental results show that over {100} facets, sulfur prefers to substitute for the carbonate anion, leading to the formation of an interesting serpentine internal electric field that greatly inhibits the charge recombining of electrons and holes, which has rarely been demonstrated; over {001} facets, however, sulfur preferentially adsorbs in oxygen vacancies, which greatly reduces the surface energy of {001} facets, leading to 80% of the high-energy {001} facets exposed. As a result, the photochemical properties of nanosheets have been greatly improved. This study could help us to fully understand the photochemical properties of semiconductors.
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Affiliation(s)
- Chao Chang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, University of Information Science & Technology , 219 Ningliu Road, Nanjing 210044, China
| | - Fei Teng
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, University of Information Science & Technology , 219 Ningliu Road, Nanjing 210044, China
| | - Zailun Liu
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, University of Information Science & Technology , 219 Ningliu Road, Nanjing 210044, China
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40
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Wang Z, Lee S, Koo K, Kim K. Nanowire-Based Sensors for Biological and Medical Applications. IEEE Trans Nanobioscience 2016; 15:186-99. [PMID: 26978831 DOI: 10.1109/tnb.2016.2528258] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Nanomaterials such as nanowires, carbon nanotubes, and nanoparticles have already led to breakthroughs in the field of biological and medical sensors. The quantum size effects of the nanomaterials and their similarity in size to natural and synthetic nanomaterials are anticipated to improve sensor sensitivity dramatically. Nanowires are considered as key nanomaterials because of their electrical controllability for accurate measurement, and chemical-friendly surface for various sensing applications. This review covers the working principles and fabrication of silicon nanowire sensors. Furthermore, we review their applications for the detection of viruses, biomarkers, and DNA, as well as for drug discovery. Advances in the performance and functionality of nanowire sensors are also surveyed to highlight recent progress in this area. These advances include the improvements in reusability, sensitivity in high ionic strength solvent, long-term stability, and self-powering. Overall, with the advantages of ultra-sensitivity and the ease of fabrication, it is expected that nanowires will contribute significantly to the development of biological and medical sensors in the immediate future.
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41
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Photonic biosensor based on photocorrosion of GaAs/AlGaAs quantum heterostructures for detection ofLegionella pneumophila. Biointerphases 2016; 11:019301. [DOI: 10.1116/1.4941983] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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42
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Ye Y, Xu Y, Huang L, Fan D, Feng Z, Wang X, Li C. Roles of adsorption sites in electron transfer from CdS quantum dots to molecular catalyst cobaloxime studied by time-resolved spectroscopy. Phys Chem Chem Phys 2016; 18:17389-97. [DOI: 10.1039/c6cp02808j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron transfer from CdS quantum dots (QDs) to cobaloxime (Co(dmgH)2pyCl) is demonstrated by transient absorption spectroscopy (TAS), and further confirmed using photoluminescence (PL) techniques.
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Affiliation(s)
- Yun Ye
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Yuxing Xu
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Lei Huang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Dayong Fan
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Zhaochi Feng
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Xiuli Wang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
| | - Can Li
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian National Laboratory for Clean Energy
- Dalian 116023
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Ayodhya D, Venkatesham M, Santoshi kumari A, Bhagavanth Reddy G, Veerabhadram G. One-pot sonochemical synthesis of CdS nanoparticles: photocatalytic and electrical properties. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2015. [DOI: 10.1007/s40090-015-0047-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Sandmann A, Kompch A, Mackert V, Liebscher CH, Winterer M. Interaction of L-Cysteine with ZnO: Structure, Surface Chemistry, and Optical Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5701-11. [PMID: 25954835 DOI: 10.1021/la504968m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Zinc oxide (ZnO) nanoparticles (NPs) were stabilized in water using the amino acid l-cysteine. A transparent dispersion was obtained with an agglomerate size on the level of the primary particles. The dispersion was characterized by dynamic light scattering (DLS), pH dependent zeta potential measurements, scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, photoluminescence (PL) spectroscopy, and X-ray absorption fine structure (EXAFS, XANES) spectroscopy. Cysteine acts as a source for sulfur to form a ZnS shell around the ZnO core and as a stabilizer for these core-shell NPs. A large effect on the photoluminescent properties is observed: the intensity of the defect luminescence (DL) emission decreases by more than 2 orders of magnitude, the intensity of the near band edge (NBE) emission increases by 20%, and the NBE wavelength decreases with increasing cysteine concentration corresponding to a blue shift of about 35 nm due to the Burstein-Moss effect.
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Affiliation(s)
- Alice Sandmann
- †Nanoparticle Process Technology, ‡Interdisciplinary Center for Analytics on the Nanoscale, and CENIDEUniversity of Duisburg-Essen, Duisburg 47057, Germany
| | - Alexander Kompch
- †Nanoparticle Process Technology, ‡Interdisciplinary Center for Analytics on the Nanoscale, and CENIDEUniversity of Duisburg-Essen, Duisburg 47057, Germany
| | - Viktor Mackert
- †Nanoparticle Process Technology, ‡Interdisciplinary Center for Analytics on the Nanoscale, and CENIDEUniversity of Duisburg-Essen, Duisburg 47057, Germany
| | - Christian H Liebscher
- †Nanoparticle Process Technology, ‡Interdisciplinary Center for Analytics on the Nanoscale, and CENIDEUniversity of Duisburg-Essen, Duisburg 47057, Germany
| | - Markus Winterer
- †Nanoparticle Process Technology, ‡Interdisciplinary Center for Analytics on the Nanoscale, and CENIDEUniversity of Duisburg-Essen, Duisburg 47057, Germany
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45
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Yang F, Guo Z. Comparison of the enhanced gas sensing properties of tin dioxide samples doped with different catalytic transition elements. J Colloid Interface Sci 2015; 448:265-74. [DOI: 10.1016/j.jcis.2015.02.045] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 02/16/2015] [Indexed: 11/27/2022]
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46
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Wilkins SJ, Paskova T, Reynolds CL, Ivanisevic A. Comparison of the Stability of Functionalized GaN and GaP. Chemphyschem 2015; 16:1687-94. [PMID: 25808181 DOI: 10.1002/cphc.201500105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 03/06/2015] [Indexed: 02/06/2023]
Abstract
Surface functionalization via 1 H,1 H,2 H,2H-perfluoro octanephosphonic acid was done in the presence of phosphoric acid to provide a simplified surface passivation technique for gallium nitride (GaN) and gallium phosphide (GaP). In an effort to identify the leading causes of surface instabilities, hydrogen peroxide was utilized as an additional chemical modification to cap unsatisfied bonds. The stability of the surfaces was studied in an aqueous environment and subsequently characterized. A physical characterization was carried out to evaluate the surface roughness and water hydrophobicity pre and post stability testing via atomic force microscopy and water goniometry. Surface-chemistry changes and solution leaching were quantified by X-ray photoelectron spectroscopy and inductively coupled plasma mass spectrometry. The results indicate a sensitivity to hydroxyl terminated species for both GaN and GaP under aqueous environments, as the increase of the degree of leaching was more significant for hydrogen peroxide treated samples. The results support the notion that hydroxyl species act as precursors to gallium oxide formation and lead to subsequent instability in aqueous solutions.
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Affiliation(s)
- Stewart J Wilkins
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27606 (USA)
| | - Tania Paskova
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27606 (USA).,Department of Electrical and Computer Engineering, North Carolina State University, 2410 Campus Shore Drive, Raleigh, North Carolina 27606 (USA)
| | - C Lewis Reynolds
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27606 (USA)
| | - Albena Ivanisevic
- Department of Materials Science and Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27606 (USA).
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47
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Nair SS, Forsythe J, Winther-Jensen B. Directing the growth of ZnO nano structures on flexible substrates using low temperature aqueous synthesis. RSC Adv 2015. [DOI: 10.1039/c5ra15453g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
c-Axis versus a-axis growth in seed-mediated grown ZnO nanowires controlled by the physical position of the substrate in the growth-solution.
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Affiliation(s)
| | - John Forsythe
- Department of Materials Engineering
- Monash University
- Australia
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48
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Han J, Zhu G, Hojamberdiev M, Peng J, Zhang X, Liu Y, Ge B, Liu P. Rapid adsorption and photocatalytic activity for Rhodamine B and Cr(vi) by ultrathin BiOI nanosheets with highly exposed {001} facets. NEW J CHEM 2015. [DOI: 10.1039/c4nj01765j] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous BiOI microspheres composed of ultrathin nanosheets with highly exposed {001} facets were fabricated using a solvothermal method.
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Affiliation(s)
- Juanli Han
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | - Gangqiang Zhu
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | | | - Jianhong Peng
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | - Xi Zhang
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | - Yun Liu
- College of Electrical and Information Engineering
- Shaanxi University of Science and Technology
- Xi'an 710068
- P. R. China
| | - Bao Ge
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
| | - Peng Liu
- School of Physics and Information Technology
- Shaanxi Normal University
- Xi'an 710062
- P. R. China
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49
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Zhu S, Liang S, Tong Y, An X, Long J, Fu X, Wang X. Photocatalytic reduction of CO2 with H2O to CH4 on Cu(i) supported TiO2 nanosheets with defective {001} facets. Phys Chem Chem Phys 2015; 17:9761-70. [DOI: 10.1039/c5cp00647c] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Cu–TiO2-x has been reasonably designed and synthesized as efficient photocatalysts for the reduction of CO2 with H2O to CH4. It is found that the high activity may be contributed by the co-existence of surface oxygen vacancies and Cu(i) species on {001} facets of TiO2.
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Affiliation(s)
- Shuying Zhu
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Shijing Liang
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
- Department of Environmental Science and Engineering
| | - Yuecong Tong
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Xiaohan An
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Jinlin Long
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Xuxu Wang
- State Key Laboratory of Photocatalysis on Energy and Environment
- Fuzhou University
- Fuzhou 350002
- P. R. China
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50
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Touzani R, El Kadiri S, Zerrouki A, Scorrano S, Vasapollo G, Manera MG, Casino F, Rella R. Optical and morphological characterization of bispyrazole thin films for gas sensing applications. ARAB J CHEM 2014. [DOI: 10.1016/j.arabjc.2010.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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