Band-Edge Tuning in Self-Assembled Layers of Bi2S3 Nanoparticles Used To Photosensitize Nanocrystalline TiO2

Peter, Laurence M.; Wijayantha, K. G. Upul; Riley, D. Jason; Waggett, Jonathan P.

doi:10.1021/jp030334l

Cited by 261 publications

(161 citation statements)

References 22 publications

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“…Photogenerated electrons can easily transfer from the Bi 2 S 3 surface to TiO 2 , because Bi 2 S 3 has a more negative conduction band (CB) [12]. The E g of bulk PbS is only 0.41 eV, but is directly dependent on the size of nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

et al. 2016

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TiO 2 films have been widely applied in photovoltaic conversion techniques. TiO 2 nanotube arrays (TiO 2 NAs) can be grown directly on the surface of metal Ti by the anodic oxidation method. Bi 2 S 3 and PbS nanoparticles (NPs) were firstly co-sensitized on TiO 2 NAs (denoted as PbS/Bi 2 S 3 (n)/TiO 2 NAs) by a two-step process containing hydrothermal and sonication-assisted SILAR method. When the concentration of Bi 3? is 5 mmol/L, the best photoelectrical performance was obtained under simulated solar irradiation. The short-circuit photocurrent (J sc ) and photoconversion efficiency (g) of PbS/Bi 2 S 3 (5)/TiO 2 NAs electrode were 4.70 mA/cm and 1.13 %, respectively.

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Section: Resultsmentioning

confidence: 99%

Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

et al. 2016

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“…The energy gap (and hence the absorption spectrum) of Q-dots can be tuned to energies higher than the bulk value by controlling the particle size. This property makes them attractive replacements for costly organic dyes [41][42][43][44][45][46][47]. CdS, CdSe, Bi 2 S 3 are some examples of Q-dots that have been identified to be used to improve the photocurrent response.…”

Section: Tio 2 and Its Nanostructures For Photoelectrochemical Applicmentioning

confidence: 99%

Advances in the application of nanotechnology in enabling a ‘hydrogen economy’

2008

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Hydrogen is gaining a great deal of attention as an energy carrier as well as an alternative fuel. However, in order to fully implement the so called 'hydrogen economy' significant technical challenges need to be overcome in the fields of production and storage of hydrogen and its point of use especially in fuel cells for the automotive industry. The purpose of this review is to present and discuss recent advances in the use of nanomaterials for solar hydrogen production and on-board solid state storage of hydrogen. The role of nanotechnology in enhancing the efficiency of fuel cells and reducing their cost is also discussed.

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“…Such assemblies include semiconductors in the form of thin filmelectrodes or colloidal systems that might be used in solid or liquid photovoltaic cells (Heera & Cindrella, 2011;Mahesh & Arumugam, 2011;Hahlin et al, 2010;Blumstengel et al, 2008;Adams, 2003;Thomas & Kamat, 2003;Shipway, Katz, & Willner, 2000;Van Hutten, Krasnikov, & Hadziioannou, 2001;Kamat, 2002;Cahen et al, 2000). Other examples include metal chalcogenides modified with polyaniline, polypayrol, or other organic semiconductors to name but a few were studied (Kasem, Menges, & Jones, 2009;Zhang et al, 2008;Graetzel, 2001;Kasem & Davis, 2008;Kohtani, Kudo, & Sakata, 1993;Vogel, Hoyer, & Weller, 1994;Plass et al, 2002;Peter et al, 2003;Liu & Kamat, 1993). In these studies low conversion efficiencies were reported.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Studies on CdS/Poly Ethyl-Aniline Interfaces

Kasem¹,

Finley²

2013

IJC

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An inorganic/organic/interface (IOI) consisting of CdS/poly ethyl aniline (PEA) assemblies was subjected to photoelectrochemical studies in nanoparticle suspensions and in thin solid film forms . The effects that PEA modifiers have on the photoelectrochemical behavior of the IOI were investigated using [Fe(CN) 6 ] 4-as a photoactive hydrated electron donor agent. Results show that the adsorption process of [Fe (CN) 6 ] 3-(the photolysis product) controls the photoactivity outcome of IOI assemblies. CdS/PEA shows lower heterogeneous photochemical response than native CdS. Native CdS amorphous nanoparticles adsorb more [Fe(CN) 6 ] 3-with a very steady adsorption/desorption process than the CdS/PEA. The interface activities were explained by analyzing the IOI junction's properties such as electron affinity, work function and hole/electrons barrier heights. The lower hole barrier height versus electron barrier height suggests that charge injection is mediated at the IOI interface through hole transfer. The aqueous nano systems retained moderate stability as indicated by the reproducibility of their photocatalytic activities. Both [Fe(CN) 6 ] 4-and PEA contributed to the stability of native CdS surfaces.

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Band-Edge Tuning in Self-Assembled Layers of Bi₂S₃ Nanoparticles Used To Photosensitize Nanocrystalline TiO₂

Cited by 261 publications

References 22 publications

Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

Advances in the application of nanotechnology in enabling a ‘hydrogen economy’

Photoelectrochemical Studies on CdS/Poly Ethyl-Aniline Interfaces

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