Abstract:The design and construction of photoelectrochemical sensor (PEC) with excellent photoelectric properties and good photoelectrocatalysis activity is significant for the effective detection of analytes. In this paper, based on the...
“…The PL spectra of BiOI/TNAs prepared through SILAR-ultrasonication assisted are shown in figure 15. From these spectra, the emission peaks of BiOI/TNAs and TNAs pristine peak at 538 nm are matched with the literature [29,49]. The PL intensity of TNAs pristine is higher than BiOI/TNAs heterojunction.…”
Section: Resultssupporting
confidence: 83%
“…The excellent PEC performance relates to the effectiveness of the photogenerated separation of electrons and holes [35]. The recombination rate of electrons and holes is highly affected when the BiOI is deposited on TNAs in large amounts [29]. Figure 15PL spectra of BiOI modified on TNAs: 40 V 1 h, 50 V 15 min (TNAs A), 40 V 1 h, 50 V 30 min (TNAs B) and 40 V 1 h, 50 V 1 h (TNAs C).…”
Section: Resultsmentioning
confidence: 99%
“…The nanoflake shape will influence the contact area between the electrode and electrolyte solution. This shape will be profitable for electrolyte diffusion into the cavity of BiOI [ 29 ]. The overloading of BiOI will cause BiOI with the thicker layer, and the mouth of tube TNAs blocked with BiOI at 7 mM of cationic and anionic precursors.…”
Section: Resultsmentioning
confidence: 99%
“…The excellent PEC performance relates to the effectiveness of the photogenerated separation of electrons and holes [35]. The recombination rate of electrons and holes is highly affected when the BiOI is deposited on TNAs in large amounts [29].…”
Section: Characterization Of Bioi/tnas By Photoluminescencementioning
confidence: 99%
“…The PL spectra of BiOI/TNAs are lower than TNAs, which indicates the lower photosynthetic recombination efficiency resulting in better photocatalytic activity. Li et al stated that when there are more layers deposited on the composite, it will also increase the recombination of photogenerated electrons [29]. The lower PL intensity shows the electron-hole pair recombination could be restrained [12].…”
Section: Characterization Of Bioi/tnas By Photoluminescencementioning
In order to extend the visible region activity of titania nanotube array (TNAs) films, the successive ionic layer adsorption and reaction (SILAR)-ultrasonication-assisted method has been used to prepare BiOI-modified TiO
2
nanotube arrays (BiOI/TNAs). The band gap of BiOI/TNAs for all the variations reveals absorption in the visible absorption. The surface morphology of BiOI/TNAs is shown in the nanoplate, nanoflake and nanosheet forms with a vertical orientation perpendicular to TiO
2
. The crystalline structure of BiOI did not change the structure of the anatase TNAs, with the band gap energy of the BiOI/TNAs semiconductor in the visible region. The photocurrent density of the BiOI/TNAs extends to the visible-light range. BiOI/TNAs prepared with 1 mM Bi and 1 mM KI on TNAs 40 V 1 h, 50 V 30 min show the optimum photocurrent density. A tandem dye-sensitized solar cell (DSSC)-photoelectrochemical (PEC) was used for hydrogen production in salty water. BiOI/TNAs optimum was used as the photoanode of the PEC cell. The solar to hydrogen conversion efficiency (STH) of tandem DSSC-PEC reaches 1.34% in salty water.
“…The PL spectra of BiOI/TNAs prepared through SILAR-ultrasonication assisted are shown in figure 15. From these spectra, the emission peaks of BiOI/TNAs and TNAs pristine peak at 538 nm are matched with the literature [29,49]. The PL intensity of TNAs pristine is higher than BiOI/TNAs heterojunction.…”
Section: Resultssupporting
confidence: 83%
“…The excellent PEC performance relates to the effectiveness of the photogenerated separation of electrons and holes [35]. The recombination rate of electrons and holes is highly affected when the BiOI is deposited on TNAs in large amounts [29]. Figure 15PL spectra of BiOI modified on TNAs: 40 V 1 h, 50 V 15 min (TNAs A), 40 V 1 h, 50 V 30 min (TNAs B) and 40 V 1 h, 50 V 1 h (TNAs C).…”
Section: Resultsmentioning
confidence: 99%
“…The nanoflake shape will influence the contact area between the electrode and electrolyte solution. This shape will be profitable for electrolyte diffusion into the cavity of BiOI [ 29 ]. The overloading of BiOI will cause BiOI with the thicker layer, and the mouth of tube TNAs blocked with BiOI at 7 mM of cationic and anionic precursors.…”
Section: Resultsmentioning
confidence: 99%
“…The excellent PEC performance relates to the effectiveness of the photogenerated separation of electrons and holes [35]. The recombination rate of electrons and holes is highly affected when the BiOI is deposited on TNAs in large amounts [29].…”
Section: Characterization Of Bioi/tnas By Photoluminescencementioning
confidence: 99%
“…The PL spectra of BiOI/TNAs are lower than TNAs, which indicates the lower photosynthetic recombination efficiency resulting in better photocatalytic activity. Li et al stated that when there are more layers deposited on the composite, it will also increase the recombination of photogenerated electrons [29]. The lower PL intensity shows the electron-hole pair recombination could be restrained [12].…”
Section: Characterization Of Bioi/tnas By Photoluminescencementioning
In order to extend the visible region activity of titania nanotube array (TNAs) films, the successive ionic layer adsorption and reaction (SILAR)-ultrasonication-assisted method has been used to prepare BiOI-modified TiO
2
nanotube arrays (BiOI/TNAs). The band gap of BiOI/TNAs for all the variations reveals absorption in the visible absorption. The surface morphology of BiOI/TNAs is shown in the nanoplate, nanoflake and nanosheet forms with a vertical orientation perpendicular to TiO
2
. The crystalline structure of BiOI did not change the structure of the anatase TNAs, with the band gap energy of the BiOI/TNAs semiconductor in the visible region. The photocurrent density of the BiOI/TNAs extends to the visible-light range. BiOI/TNAs prepared with 1 mM Bi and 1 mM KI on TNAs 40 V 1 h, 50 V 30 min show the optimum photocurrent density. A tandem dye-sensitized solar cell (DSSC)-photoelectrochemical (PEC) was used for hydrogen production in salty water. BiOI/TNAs optimum was used as the photoanode of the PEC cell. The solar to hydrogen conversion efficiency (STH) of tandem DSSC-PEC reaches 1.34% in salty water.
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