The influence of various concentrations of N-doped TiO2 as photoanode to increase the efficiency of dye-sensitized solar cell

Gunawan, Bodi; Musyaro’ah,; Huda, Ichsanul; Indayani, Wahyu; Ramadhanti, Seni; Endarko, Endarko

doi:10.1063/1.4968381

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Titanium dioxide (TiO 2 ) is one of the most widely studied materials for applications in solar cells [1,2,3], pollutant degradation [4,5,6], photolysis of water [7], gas sensor [8], and bio-applications [9,10], due to its excellent photocatalytic activity, non-toxicity, high stability, low cost, and biocompatibility [11,12,13]. However, TiO 2 is generally active under ultraviolet irradiation due to the wide band gap of approximately 3.2 eV [14,15], and has limited applications under visible light irradiation [16].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Hiếu

Lam

et al. 2018

Micromachines

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Nitrogen-doped TiO2 nanotube arrays (N-TNAs) were successfully fabricated by a simple thermal annealing process in ambient N2 gas at 450 °C for 3 h. TNAs with modified morphologies were prepared by a two-step anodization using an aqueous NH4F/ethylene glycol solution. The N-doping concentration (0–9.47 at %) can be varied by controlling N2 gas flow rates between 0 and 500 cc/min during the annealing process. Photocatalytic performance of as-prepared TNAs and N-TNAs was studied by monitoring the methylene blue degradation under visible light (λ ≥ 400 nm) illumination at 120 mW·cm−2. N-TNAs exhibited appreciably enhanced photocatalytic activity as compared to TNAs. The reaction rate constant for N-TNAs (9.47 at % N) reached 0.26 h−1, which was a 125% improvement over that of TNAs (0.115 h−1). The significant enhanced photocatalytic activity of N-TNAs over TNAs is attributed to the synergistic effects of (1) a reduced band gap associated with the introduction of N-doping states to serve as carrier reservoir, and (2) a reduced electron‒hole recombination rate.

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Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Hiếu

Lam

et al. 2018

Micromachines

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“…These semiconductors include ZnO [65,66] (extensively studied after TiO2), SnO2 [67], Nb2O5 [68], WO3 [69], Ta2O5 [70], CdSe [71], CdTe [72], CdS [71] and PbS [73] nanostructures. To improve the performance of the photoanode, these nanostructures can be doped with various ions such as Zn 2+ , La 3+ , Nd 3+ , Er 3+ and Ho 3+ and can also be decorated with different noble metals such as silver, chromium, copper, and gold [74][75][76][77][78][79].…”

Section: Fig 3 Energy Levels In Typical Dye Sensitized Solar Cellsmentioning

confidence: 99%

Counter electrode materials based on carbon nanotubes for dye-sensitized solar cells

Shahzad

Lutfullah

Perveen

et al. 2022

Renewable and Sustainable Energy Reviews

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“…Titanium dioxide (TiO 2 ) is one of the most widely studied materials for applications in solar cells [1,2,3], pollutant degradation [4,5,6], photolysis of water [7], gas sensing [8], and bio-applications [9,10], due to its excellent photocatalytic reactivity, high chemical stability, non-toxicity, biocompatibility, and low cost [11,12,13]. However, the large band gap of TiO 2 (3.2 eV) limits it light absorption to only 5% of the solar spectrum [14,15,16].…”

Section: Introductionmentioning

confidence: 99%

TiO2 and Au-TiO2 Nanomaterials for Rapid Photocatalytic Degradation of Antibiotic Residues in Aquaculture Wastewater

Vinh

Nguyen

et al. 2019

Materials

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Antibiotic residues in aquaculture wastewater are considered as an emerging environmental problem, as they are not efficiently removed in wastewater treatment plants. To address this issue, we fabricated TiO2 nanotube arrays (TNAs), TiO2 nanowires on nanotube arrays (TNWs/TNAs), Au nanoparticle (NP)-decorated-TNAs, and TNWs/TNAs, which were applied for assessing the photocatalytic degradation of eight antibiotics, simultaneously. The TNAs and TNWs/TNAs were synthesized by anodization using an aqueous NH4F/ethylene glycol solution. Au NPs were synthesized by chemical reduction method, and used to decorate on TNAs and TNWs/TNAs. All the TiO2 nanostructures exhibited anatase phase and well-defined morphology. The photocatalytic performance of TNAs, TNWs/TNAs, Au-TNAs and Au-TNWs/TNAs was studied by monitoring the degradation of amoxicillin, ampicillin, doxycycline, oxytetracycline, lincomycin, vancomycin, sulfamethazine, and sulfamethoxazole under ultraviolet (UV)-visible (VIS), or VIS illumination by LC-MS/MS method. All the four kinds of nanomaterials degraded the antibiotics effectively and rapidly, in which most antibiotics were removed completely after 20 min treatment. The Au-TNWs/TNAs exhibited the highest photocatalytic activity in degradation of the eight antibiotics. For example, reaction rate constants of Au-TNWs/TNAs for degradation of lincomycin reached 0.26 min−1 and 0.096 min−1 under UV-VIS and VIS irradiation, respectively; and they were even higher for the other antibiotics. The excellent photocatalytic activity of Au-TNWs/TNAs was attributed to the synergistic effects of: (1) The larger surface area of TNWs/TNAs as compared to TNAs, and (2) surface plasmonic effect in Au NPs to enhance the visible light harvesting.

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The influence of various concentrations of N-doped TiO2 as photoanode to increase the efficiency of dye-sensitized solar cell

Cited by 4 publications

References 13 publications

Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Counter electrode materials based on carbon nanotubes for dye-sensitized solar cells

TiO2 and Au-TiO2 Nanomaterials for Rapid Photocatalytic Degradation of Antibiotic Residues in Aquaculture Wastewater

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