How to improve lead dioxide anodes performance in organic wastewater treatment: Review and prospect

Hua, Guo; Hu, Wenyu; Xu, Zhicheng; Guo, Siyuan; Qiao, Dan; Wang, Xue; Xu, Hao; Yan, Wei

doi:10.1016/j.psep.2022.06.012

Cited by 26 publications

(7 citation statements)

References 137 publications

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“…The corresponding X‐ray diffractograms of the TiO 2‐ x NCs electrode (Figure 2G) demonstrate the successful formation of rutile TiO 2 (JCPDS No. 21‐1276), which could form solid solutions with rutile SnO 2 [36] . Compared with TiO 2 NCs, the increased intensity of the (101) plane of TiO 2‐x NCs indicate its preferred orientation in this direction.…”

Section: Resultsmentioning

confidence: 99%

“…21-1276), which could form solid solutions with rutile SnO 2 . [36] Compared with TiO 2 NCs, the increased intensity of the (101) plane of TiO 2-x NCs indicate its preferred orientation in this direction. The cell volume of the TiO 2-x NCs is enlarged after the electrochemical reduction procedure (Table S1) due to the formation of Ti 3 + in the TiO 2 lattice for its larger ionic radii (0.81 Å) than Ti 4 + (0.74 Å).…”

Section: Chemsuschemmentioning

confidence: 96%

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Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

et al. 2023

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Stable and efficient SnO2 electrodes are very promising for effectively degrading refractory organic pollutants in wastewater treatment. In this regard, we firstly prepared Ti3+ self‐doped urchin‐like rutile TiO2 nanoclusters (TiO2‐xNCs) on a Ti mesh substrate by hydrothermal and electroreduction to serve as an interlayer for the deposition of Sb−SnO2. The TiO2‐xNCs/Sb−SnO2 anode exhibited a high oxygen evolution potential (2.63 V vs. SCE) and strong ⋅OH generation ability for the enhanced amount of absorbed oxygen species. Thus, the degradation results demonstrated its good rhodamine B (RhB), methylene blue (MB), alizarin yellow R (AYR), and methyl orange (MO) removal performance, with the rate constant increased 5.0, 1.9, 1.9, and 4.7 times, respectively, compared to the control Sb−SnO2 electrode. RhB and AYR degradation mechanisms are also proposed based on the results of high‐performance liquid chromatography coupled with mass spectrometry and quenching experiments. More importantly, this unique rutile interlayer prolonged the anode lifetime sixfold, given its good lattice match with SnO2 and the three‐dimensional concave–convex structure. Consequently, this work paves a new way for designing the crystal form and structure of the interlayers to obtain efficient and stable SnO2 electrodes for addressing dye wastewater problems.

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Section: Resultsmentioning

confidence: 99%

Section: Chemsuschemmentioning

confidence: 96%

Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

et al. 2023

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“…[115][116][117] The recycled Pb-containing compounds from degraded PSCs can be used not only for fabricating PSCs but also as raw materials in other industries, such as car batteries [118,119] and anodes in wastewater treatment. [120,121] In comparison with obtaining new materials through mining, transportation and smelting, recycling Pb-containing materials can greatly reduce mining waste, environmental pollution and energy consumption. If the above-mentioned 594.7 t Pb were recycled, it would generate an economic profit of millions of dollars.…”

Section: Wwwadvsustainsyscommentioning

confidence: 99%

Recycling Useful Materials of Perovskite Solar Cells toward Sustainable Development

Meng

Chang

et al. 2023

Advanced Sustainable Systems

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To date, the highest certified efficiency has reached 25.7% for laboratory‐scale perovskite solar cells (PSCs). Breakthroughs in the commercialization of PSCs is achieved continuously. Therefore, the recovery of decommissioned devices that are closely related to the commercialization is extremely urgent. More importantly, lead (Pb) and other materials in PSCs are ecotoxic and biotoxic. Due to improper disposal of the decommissioned devices, serious heavy metal Pb and solid waste pollution incidents may occur. In fact, PSCs contain a great deal of recyclable and valuable materials. To achieve the goal of sustainable PSCs, recycling and reusing these useful materials are advocated. In this review, the authors retrospect structures and key materials of PSCs briefly. Benefits of recycling useful materials from the decommissioned PSCs are analyzed in terms of environmental and economic profits, including reducing the material costs, saving energy, reducing negative environmental impacts and conserving natural resources. Research progresses on recycling and reusing the useful materials are summarized and discussed from the perspectives of feasible pathways, recovery solvents, recovery effects and performance analysis of the corresponding devices. Finally, current challenges and future opportunities to prevent Pb leakage and recycle PSCs in an environmentally viable manner are proposed toward sustainable development.

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“…It is unclear how mechanistic studies of EOP on PbO 2 apply to NATO, which exhibits significantly different electronic properties and reactivity, even though they share similar crystal structures and are composed of group (IV) post-transition metals. , Unlike quasi-metallic PbO 2 , undoped SnO 2 (TO) is a wide-bandgap semiconductor with poor electrical conductivity. − Therefore, it is often n-type doped with antimony (Sb), which is known to increase its conductivity. , While antimony-doped tin oxide (ATO, Sb–SnO 2 ) can oxidize organic compounds and pollutants, neither undoped TO nor ATO generate O 3 . , The introduction of nickel (Ni) as a co-dopant remarkably triggers EOP activity, even though the molar concentration of Ni is frequently less than 0.1%. , The role of Ni in the catalyst is disputed and presents an interesting conundrum. ,, …”

Section: Introductionmentioning

confidence: 99%

Interplay between Catalyst Corrosion and Homogeneous Reactive Oxygen Species in Electrochemical Ozone Production

Alaufey,

Zhao,

Lindsay

et al. 2024

ACS Catal.

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Electrochemical ozone production (EOP), a sixelectron water oxidation reaction, offers promising avenues for creating value-added oxidants and disinfectants. However, progress in this field is slowed by a dearth of understanding of fundamental reaction mechanisms. In this work, we combine experimental electrochemistry, spectroscopic detection of reactive oxygen species (ROS), oxygen-anion chemical ionization mass spectrometry, and computational quantum chemistry calculations to determine a plausible reaction mechanism on nickel-and antimony-doped tin oxide (Ni/Sb−SnO 2 , NATO), one of the most selective EOP catalysts. Antimony doping is shown to increase the conductivity of the catalyst, leading to improved electrochemical performance. Spectroscopic analysis and electrochemical experiments combined with quantum chemistry predictions reveal that hydrogen peroxide (H 2 O 2 ) is a critical reaction intermediate. We propose that leached Ni 4+ cations catalyze hydrogen peroxide into solution phase hydroperoxyl radicals ( • OOH); these radicals are subsequently oxidized to ozone. Isotopic product analysis shows that ozone is generated catalytically from water and corrosively from the catalyst oxide lattice without regeneration of lattice oxygens. Further quantum chemistry calculations and thermodynamic analysis suggest that the electrochemical corrosion of tin oxide itself might generate hydrogen peroxide, which is then catalyzed to ozone. The proposed pathways explain both the roles of dopants in NATO and its lack of stability. Our study interrogates the possibility that instability and electrochemical activity are intrinsically linked through the formation of ROS. In doing so, we provide the first mechanism for EOP that is consistent with computational and experimental results and highlight the central challenge of instability as a target for future research efforts.

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How to improve lead dioxide anodes performance in organic wastewater treatment: Review and prospect

Cited by 26 publications

References 137 publications

Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

Recycling Useful Materials of Perovskite Solar Cells toward Sustainable Development

Interplay between Catalyst Corrosion and Homogeneous Reactive Oxygen Species in Electrochemical Ozone Production

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How to improve lead dioxide anodes performance in organic wastewater treatment: Review and prospect

Cited by 26 publications

References 137 publications

Novel Sb−SnO2 Electrode with Ti3+ Self‐Doped Urchin‐Like Rutile TiO2 Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

Novel Sb−SnO2 Electrode with Ti3+ Self‐Doped Urchin‐Like Rutile TiO2 Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

Recycling Useful Materials of Perovskite Solar Cells toward Sustainable Development

Interplay between Catalyst Corrosion and Homogeneous Reactive Oxygen Species in Electrochemical Ozone Production

Contact Info

Product

Resources

About

Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants

Novel Sb−SnO₂ Electrode with Ti³⁺ Self‐Doped Urchin‐Like Rutile TiO₂ Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants