Unrevealing the effect of transparent fluorine-doped tin oxide (FTO) substrate and irradiance configuration to unmask the activity of FTO-BiVO4 heterojunction

Carrera-Crespo, J. Edgar; Fuentes-Camargo, Iliana; Palma‐Goyes, Ricardo E.; García-Pérez, Ulises M.; Vazquez‐Arenas, Jorge; Chairez, Isaac; Poznyak, Tatyana

doi:10.1016/j.mssp.2021.105717

Cited by 24 publications

(10 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The R ct values follow the increase sequence: ITO/FeVO(III) (2160 × 10 3 Ω) > ITO/FeVO(II) (257 × 10 3 Ω) > ITO/FeVO(I) (119 × 10 3 Ω). This result indicated that with a smaller thickness, the photoexcited electrons formed on the semiconductor surface could migrate more quickly to the substrate and, later, to the auxiliary electrode [ 54 , 55 ]. At the same time, in the dark condition, all R ct values are extremely high ( Table 1 ), due to the small formation of charge carriers.…”

Section: Resultsmentioning

confidence: 99%

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

et al. 2022

View full text Add to dashboard Cite

This study reports a facile approach for constructing low-cost and remarkable electroactivity iron vanadate (Fe-V-O) semiconductor material to be used as a photoelectrochemical sensor for dopamine detection. The structure and morphology of the iron vanadate obtained by the Successive Ionic Adsorption and Reaction process were critically characterized, and the photoelectrochemical characterization showed a high photoelectroactivity of the photoanode in visible light irradiation. Under best conditions, dopamine was detected by chronoamperometry at +0.35 V vs. Ag/AgCl, achieving two linear response ranges (between 1.21 and 30.32 μmol L−1, and between 30.32 and 72.77 μmol L−1). The limits of detection and quantification were 0.34 and 1.12 μmol L−1, respectively. Besides, the accuracy of the proposed electrode was assessed by determining dopamine in artificial cerebrospinal fluid, obtaining recovery values ranging from 98.7 to 102.4%. The selectivity was also evaluated by dopamine detection against several interferent species, demonstrating good precision and promising application for the proposed method. Furthermore, DFT-based electronic structure calculations were also conducted to help the interpretation. The dominant dopamine species were determined according to the experimental conditions, and their interaction with the iron vanadate photoanode was proposed. The improved light-induced DOP detection was likewise evaluated regarding the charge transfer process.

show abstract

Section: Resultsmentioning

confidence: 99%

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

et al. 2022

View full text Add to dashboard Cite

show abstract

“…For example, Carrera-Crespo et al analyzed the effect of using FTO as a photoactive substrate on the PEC performance of BiVO 4 . 81 They found that the BiVO 4 photoanode had better PEC performance when receiving light from the back of FTO. The additional charge transfer resistors are generated when illuminating the front of the BiVO 4 photoanode and even increase as the thickness of BiVO 4 films increases, whereas this issue is significantly reduced when the back of the photoanode is illuminated.…”

Section: Substrate Modificationmentioning

confidence: 99%

“…Mostly, when people study the performance of the BiVO 4 photoanode, they are aimed at BiVO 4 itself, ignoring the impact from the substrate, which sometimes plays an important role in affecting the PEC performance. For example, Carrera-Crespo et al analyzed the effect of using FTO as a photoactive substrate on the PEC performance of BiVO 4 . They found that the BiVO 4 photoanode had better PEC performance when receiving light from the back of FTO.…”

Section: Modification Of Bivo4 For Pec Water Splittingmentioning

confidence: 99%

Visible Light Photoanode Material for Photoelectrochemical Water Splitting: A Review of Bismuth Vanadate

et al. 2022

View full text Add to dashboard Cite

Photoelectrochemical (PEC) technology for water splitting has been regarded as one of the most appealing and environmentally friendly approaches to converting light energy into hydrogen energy. The semiconductor material used as the photoelectrode is considered to be the most important factor affecting the efficiency of the PEC system. Bismuth vanadate (BiVO 4 ), as a n-type semiconductor material, has a wide light absorption range, strong catalytic ability, high stability, and low cost, which makes it one of the most promising candidates as a photoanode material for PEC water splitting. Since the first report of BiVO 4 , tremendous efforts have been devoted to exploring different strategies for the synthesis and structural modification of BiVO 4 to enhance its PEC performance, which has led to remarkable progress in recent years. This review attempts to summarize such considerable progress of BiVO 4 for PEC water splitting, mainly focusing on the synthetic methods and modification strategies. In the end, the personal perspectives on the challenges and opportunities of this promising material are proposed.

show abstract

“…However, due to the high recombination rate of photogenerated electron and holes, pure BiVO 4 shows low photocatalytic efficiency as well as low recyclability. Therefore, loading BiVO 4 on conductive flexible materials has become a research hotspot, such as: M‐BiVO 4 /WO 3 /ITO‐Mica, [16] FTO‐BiVO 4 , [17] Ag/BiVO 4 /Cotton‐K, [18] Co 3 O 4 ‐BiVO 4 /g‐C 3 N 4 , [19] BiVO 4 /BiPO 4 /GO, [20] BiVO 4 ‐GO‐TiO 2 ‐PaNI [21] and BiVO 4 /FeVO 4 @rGO [22]…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14][15] However, due to the high recombination rate of photogenerated electron and holes, pure BiVO 4 shows low photocatalytic efficiency as well as low recyclability. Therefore, loading BiVO 4 on conductive flexible materials has become a research hotspot, such as: M-BiVO 4 /WO 3 /ITO-Mica, [16] FTO-BiVO 4 , [17] Ag/BiVO 4 /Cotton-K, [18] Co 3 O 4 -BiVO 4 /g-C 3 N 4 , [19] BiVO 4 /BiPO 4 /GO, [20] BiVO 4 -GO-TiO 2 -PaNI [21] and BiVO 4 /FeVO 4 @rGO. [22] Graphene is a relatively hot two-dimensional carbon material in recent years, [23][24] which has high conductivity (106 S/m) [25] and good electron mobility (42 × 10 5 cm 2 /V • S).…”

Section: Introductionmentioning

confidence: 99%

Preparation of RGO film based BiVO₄ (040) composites with photocatalytic properties

Qian

Cao

et al. 2022

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

Graphene oxide (GO) film was modified by silane coupling agent KH‐560, then bismuth vanadate (BiVO4) was successfully loaded on the modified GO film via hydrothermal method to obtain reduced graphene oxide (RGO) film based BiVO4 composite. The effects of hydrothermal reaction time on BiVO4 morphology and photocatalytic properties were investigated by scanning electron microscopy (SEM), X‐ray diffraction pattern (XRD), ultraviolet visible light absorption spectroscopy (UV‐vis) and photocatalytic activity. The results show that BiVO4 is a porous structure growing towards (040) crystal plane on the composite, and when the synthesis time is 6 h, the degradation rate for Reactive Black 5 by the composite can reach 95 % within 90 min. Furthermore, the composite prepared at the optimal time was characterized by transmission electron microscope (TEM), energy dispersive X‐ray spectroscopy (EDS) and X‐ray photoelectron spectroscopy (XPS). The microphysical process of the separation and combination of photogenerated electron hole pairs was successfully demonstrated by the variations of photoinduced current density with time (i‐t curve) and electrochemical impedance spectroscopies (EIS). Finally, the photocatalytic mechanism was proposed by free radical capture experiment.

show abstract

Unrevealing the effect of transparent fluorine-doped tin oxide (FTO) substrate and irradiance configuration to unmask the activity of FTO-BiVO4 heterojunction

Cited by 24 publications

References 66 publications

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

Visible Light Photoanode Material for Photoelectrochemical Water Splitting: A Review of Bismuth Vanadate

Preparation of RGO film based BiVO₄ (040) composites with photocatalytic properties

Contact Info

Product

Resources

About

Unrevealing the effect of transparent fluorine-doped tin oxide (FTO) substrate and irradiance configuration to unmask the activity of FTO-BiVO4 heterojunction

Cited by 24 publications

References 66 publications

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

Visible Light Photoelectrochemical Sensor for Dopamine: Determination Using Iron Vanadate Modified Electrode

Visible Light Photoanode Material for Photoelectrochemical Water Splitting: A Review of Bismuth Vanadate

Preparation of RGO film based BiVO4 (040) composites with photocatalytic properties

Contact Info

Product

Resources

About

Preparation of RGO film based BiVO₄ (040) composites with photocatalytic properties