A comparative study of CuO deposition methods on titania nanotube arrays for photoelectrocatalytic ammonia degradation and hydrogen production

Elysabeth, Tiur; Mulia, Kamarza; Ibadurrohman, Muhammad; Dewi, Eniya Listiani; Slamet, Slamet

doi:10.1016/j.ijhydene.2021.05.149

Cited by 29 publications

(19 citation statements)

References 51 publications

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“…C, N, F, or B) (Ratnawati et al, 2014) and noble metal (e.g. Pt, Pd, Au, or Fe) doping (Slamet et al, 2017;Muttaqin et al, 2022), deposition of transition metal oxide CuO on TiO2 (Sang et al, 2019;Elysabeth et al, 2021), and sensitization with WO3, CdS, CdSe, or PbS to reduce recombination and improve the capability of harnessing visible light (Elangovan et al, 2021).…”

Section: Photocatalysismentioning

confidence: 99%

Simultaneous Decolorization of Tartrazine and Production of H2 in a Combined Electrocoagulation and Photocatalytic Processes using CuO-TiO2 Nanotube Arrays: Literature Review and Experiment

Slamet

Pelawi

Ibadurrohman

et al. 2022

Indonesian J. Sci. Technol

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We reported the simultaneous decolorization of tartrazine and H2 production via electrocoagulation and photocatalysis using CuO-doped TiO2 nanotube arrays (TNTA) composites. Tartrazine was removed by the combination of adsorption, electrocoagulation, and photocatalytic degradation, while H2 was produced through water reduction at the cathode and water splitting process on the photocatalyst surface. The photoreactor contains CuO-TNTA as a photocatalyst and is equipped with an 80-W UV lamp. Deposition of CuO on TNTA was conducted using a successive ionic layer adsorption and reaction (SILAR) method. The nanotubular of the TNTA as well as the distribution of CuO were evaluated employing FESEM and HRTEM. XRD patterns confirmed weak diffraction of CuO and TNTA revealing an anatase crystallite phase. The band gap of the CuO-TNTA was also found to be redshifted from that of pure TNTA. The simultaneous processes with the combined systems (20 V, pH = 11) managed to remove 80% of tartrazine while producing a high H2 yield (1.84 mmol), significantly higher than those obtained by each process.

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Section: Photocatalysismentioning

confidence: 99%

Simultaneous Decolorization of Tartrazine and Production of H2 in a Combined Electrocoagulation and Photocatalytic Processes using CuO-TiO2 Nanotube Arrays: Literature Review and Experiment

Slamet

Pelawi

Ibadurrohman

et al. 2022

Indonesian J. Sci. Technol

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“…According to National Standards (GB 18,595-2001) for discharging sewage of livestock and poultry breeding, the safe concentration of ammonia nitrogen discharged into the environment is less than 80 mg/L, but microbial treatment techniques will be arduous to achieve. Photocatalytic technology for NC (ammonium/free ammonia) decomposition has many advantages since photocatalysts are not affected by the temperature, pH or toxicants in pre-treated biogas slurry 3 – 5 . NC are first adsorbed on photocatalyst surfaces though diffusion and electrostatic attraction and then decomposed by strong oxidative ·OH on active sites with final products that can only be N 2 , but the mechanism is not yet fully clear 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Photocatalytic technology for NC (ammonium/free ammonia) decomposition has many advantages since photocatalysts are not affected by the temperature, pH or toxicants in pre-treated biogas slurry 3 – 5 . NC are first adsorbed on photocatalyst surfaces though diffusion and electrostatic attraction and then decomposed by strong oxidative ·OH on active sites with final products that can only be N 2 , but the mechanism is not yet fully clear 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

Porous defective carbon ferrite for adsorption and photocatalysis toward nitrogen compounds in pre-treated biogas slurry

2022

Sci Rep

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Carbon ferrite (C-Fe3O4) with hydrophilic functional groups and lattice defects was synthesized in anhydrous molten alkali system by fern leaves and ferric chloride as raw materials. Structural characterization results showed that carbon ferrite obtained oxygen-containing groups on the carbon surface. And structural pores and lattice defects resulted from spontaneous accumulation and “directive-connection” of ferrite (Fe3O4) nanoparticles. Carbon ferrite displayed an adsorption efficiency of 29.0% and excellent photocatalytic degradation of 80.8% toward nitrogen compounds (initial concentration of 430 mg/L) in pre-treated biogas slurry. The micromechanism for nitrogen compounds removal was discussed at the molecular/atomic level by exploring carbon ferrite “structure-activity”, which provides a design idea from microscopic perspective for the preparation of environmental materials with reactive sites.

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“…In photocatalytic H2 generation, several processes have been performed to enhance the utilization efficiency of TiO2 photocatalyst under visible light, increase the surface area and reduce the electron-hole recombination. These processes include depositing with nonmetal and metal ions to be active with visible light and reducing the recombination of photogenerated e-and h + (Sharotri et al, 2016;Slamet et al, 2017), getting morphology modifications in the forms of nanotubes (Elysabeth et al, 2021), and combining with narrow bandgap semiconductors such as CdS Zhao et al, 2016). TiO2-CdS is a common composite system.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Hydrogen Generation using CdS-modified TiO2 Nanotube Arrays in 2,4,6-Trichlorophenol as a Hole Scavenger

Ratnawati

Slamet

Toya

et al. 2022

Int. J. Renew. Energy Dev.

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Nowadays, the lack of renewable energy such as hydrogen, and other environmental issues are problems that must be resolved. 2,4,6-Trichlorophenol (2,4,6-TCP) is classified as a recalcitrant pollutant due to its carcinogenic properties, high toxicity, and dangers to the environment therefore it needs to be eliminated. Hydrogen production using organic pollutant (2,4,6-TCP solution) as a hole scavenger on CdS-TiO2 nanotube arrays photocatalyst (TNTA-CdS) has been investigated at various CdS loading on TNTA and the initial concentration of 2,4,6-TCP. The TNTA sample was prepared by anodization and followed by an electrodeposition method to decorate CdS on TNTA. The H2 which was generated by reduction H+ and the 2,4,6-TCP removal was performed simultaneously by photocatalysis with TNTA-CdS as photocatalyst. The mole ratio of CdCl2:CH3CSNH2 as precursors of CdS deposited on TNTA (CdS loading) were 0.1:0.06, 0.2:0.12, and 0.4:0.24 and the initial concentration of 2,4,6-TCP were 10, 20 and 40 ppm. Meanwhile, the photocatalytic performance of the variations in CdS loading on TNTA and initial concentration of 2,4,6-TCP toward hydrogen generation was investigated in a photoreactor for 240 minutes under visible light irradiation with a mercury lamp as a photon source. The CdS decorating on TNTA was confirmed by SEM, EDX, and X-ray diffraction (XRD) characterization. According to the UV-Vis and XRD analysis, the TNTA-CdS samples have bandgap energies in the range of 2.71 - 2.89 eV and comprise a 100% anatase phase. Based on the photocatalysis results, the optimum composition of CdS loading is 0.2:0.16 (TNTA-CdS-2) which produced the highest total hydrogen (2.155 mmol/g) compared to the other compositions and produced 1.5 times higher compared to TNTA at 40 ppm of 2,4,6-TCP.

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A comparative study of CuO deposition methods on titania nanotube arrays for photoelectrocatalytic ammonia degradation and hydrogen production

Cited by 29 publications

References 51 publications

Simultaneous Decolorization of Tartrazine and Production of H2 in a Combined Electrocoagulation and Photocatalytic Processes using CuO-TiO2 Nanotube Arrays: Literature Review and Experiment

Simultaneous Decolorization of Tartrazine and Production of H2 in a Combined Electrocoagulation and Photocatalytic Processes using CuO-TiO2 Nanotube Arrays: Literature Review and Experiment

Porous defective carbon ferrite for adsorption and photocatalysis toward nitrogen compounds in pre-treated biogas slurry

Enhancing Hydrogen Generation using CdS-modified TiO2 Nanotube Arrays in 2,4,6-Trichlorophenol as a Hole Scavenger

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