Electrocatalytic upgrading of nitrogenous wastes into value-added chemicals: A review

Liu, Jiawei; Li, Zeyu; Lv, Chade; Tan, Xian-Yi; Lee, Carmen; Loh, Xian Jun; Chua, Ming Hui; Li, Zibiao; Pan, Hongge; Chen, Jian; Zhu, Qiang; Xu, Jianwei; Yan, Qingyu

doi:10.1016/j.mattod.2024.01.009

Cited by 13 publications

(5 citation statements)

References 244 publications

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“…These metal complexed nanospheres in water were directly employed as soft template nanocarriers to control, at the nanometer scale, the dispersion of metal on a nanostructured support. As a proof of concept, we chose copper as this is a very promising and affordable alternative to noble metals in different applications such as electrocatalysis − or energy storage and conversion . Cerium oxide was used as a model support mainly due to the simplicity of synthesizing nanoparticles (NP) under 10 nm which are dispersible in water as well as its stability at high temperature required during the thermal treatment allowing to sacrifice the template and obtain a hollow structure.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Therefore, we studied the ability of these latexes of terpyridine-terminated copolymer self-assemblies to complex M 2+ metal cations (Fe 2+ and Cu 2+ ) and their utilization for the preparation of metal supported on metal oxide nanostructures as exemplified with Cu–CeO 2 hollow spheres via the use of Cu 2+ -tpy-PPEGMA- b -PMMA as nanocarriers and CeO 2 as support. In the era of climate change, electrolysis emerges as a promising means for waste-to-valuable conversion such as CO 2 conversion or nitrogenous wastes such as nitrates in water . In this field, as copper is a very promising, affordable alternative for noble metals, − this new Cu–CeO 2 hollow sphere material was finally tested as an electrocatalyst for the nitrate reduction reaction.…”

Section: Introductionmentioning

confidence: 99%

“…In the era of climate change, electrolysis emerges as a promising means for waste-to-valuable conversion such as CO 2 conversion or nitrogenous wastes such as nitrates in water . In this field, as copper is a very promising, affordable alternative for noble metals, − this new Cu–CeO 2 hollow sphere material was finally tested as an electrocatalyst for the nitrate reduction reaction. Indeed, compared to traditional electrocatalysts in general, this synthetic approach should enable more precise immobilization of catalytic components and improve the distribution of active sites within the hollow spheres or even their number.…”

Section: Introductionmentioning

confidence: 99%

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Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Francois,

Tran,

Piogé

et al. 2024

ACS Appl. Mater. Interfaces

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Water-soluble polymers with the ability to complex metal ions through complexing ligands have attracted significant interest in diverse domains, such as optical or catalyst applications. In this paper, we successfully synthesized, through a one-pot process combining polymerization-induced self-assembly and reversible addition-fragmentation chain transfer polymerization, aqueous dispersions of terpyridine-decorated poly[poly(ethylene glycol)methyl ether methacrylate]-b-poly(methyl methacrylate) (tpy-PPEG-MA-b-PMMA) amphiphilic block copolymers. The in-situ formation of well-defined amphiphilic block copolymers and their self-assembly led to nanosphere latex with the hydrodynamic diameters increasing from 17 to 52 nm and the length of the copolymers increasing from 21,000 to 51,000 g•mol −1 . These aqueous dispersed tpy-PPEGMA-b-PMMA nanospheres effectively complex metal ions, such as Cu 2+ , in a stoichiometric ratio of 2:1. Subsequently, these metalcomplexed nanospheres were employed as soft template nanocarriers to control, on the nanometer scale, the dispersion of metal on a nanostructured support. This is exemplified by the synthesis of copper supported on cerium oxide hollow spheres (Cu−CeO 2 ) using Cu 2+ -tpy-PPEGMA-b-PMMA as template nanocarriers and CeO 2 nanoparticles. This novel assembly engineering strategy for the preparation of atomically dispersed metal on a nanostructured support was highlighted through the utilization of Cu−CeO 2 hollow spheres as an electrocatalyst for the nitrate reduction reaction (NO 3 RR) to NH 3 . These encouraging outcomes emphasize the potential of metal−metal oxide-nanostructured materials to treat contaminated water sources with nitrate while allowing the green production of ammonia.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Francois,

Tran,

Piogé

et al. 2024

ACS Appl. Mater. Interfaces

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“…[157][158] For other type of wastes, there have been various solutions to reuse it. [159][160] Carbonation of burnt ash presents a viable strategy for reducing CO 2 emissions and stabilizing heavy metals. Treated ash with stabilized heavy metals can be safer for certain applications, such as in construction materials.…”

Section: Reduce Heavy Metal Pollution In Waste Ashesmentioning

confidence: 99%

Harnessing Ash for Sustainable CO₂ Absorption: Current Strategies and Future Prospects

Wu,

Zhang,

Wang

et al. 2024

Chemistry An Asian Journal

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This review explores the potential of using different types of ash, namely fly ash, biomass ash, and coal ash etc., as mediums for CO2 capture and sequestration. The diverse origins of these ash types—municipal waste, organic biomass, and coal combustion—impart unique physicochemical properties that influence their suitability and efficiency in CO2 absorption. This review first discusses the environmental and economic implications of using ash wastes, emphasizing the reduction in landfill usage and the transformation of waste into value‐added products. Then the chemical/physical treatments of ash wastes and their inherent capabilities in binding or reacting with CO2 are introduced, along with current methodologies utilize these ashes for CO2 sequestration, including mineral carbonation and direct air capture techniques. The application of using ash wastes for CO2 capture are highlighted, followed by the discussion regarding challenges associated with ash‐based CO2 absorption approach. Finally, the article projects into the future, proposing innovative approaches and technological advancements needed to enhance the efficacy of ash in combating the increasing CO2 levels. By providing a comprehensive analysis of current strategies and envisioning future prospects, this review aims to contribute to the field of sustainable CO2 absorption and environmental management.

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“…Amid the persistent energy crisis, mounting environmental concerns, and the unabated expansion of the global population, there is a pressing necessity to investigate and foster viable, environmentally sound, and economically viable remedies to tackle these intricate predicaments. In sustainable energy systems, electrochemical energy conversion devices play a pivotal role in producing valuable chemicals such as hydrogen, hydrocarbons, and ammonia from easily accessible resources comprising water, carbon dioxide, and nitrogen. − In recent years, NRR at room temperature and atmospheric pressure has received widespread attention. − Effectively harnessing N 2 resources continues to pose a formidable and elusive challenge.…”

Section: Introductionmentioning

confidence: 99%

In Situ Characterization Techniques for Electrochemical Nitrogen Reduction Reaction

Wu,

Wang,

et al. 2024

ACS Nano

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The electrochemical reduction of nitrogen to produce ammonia is pivotal in modern society due to its environmental friendliness and the substantial influence that ammonia has on food, chemicals, and energy. However, the current electrochemical nitrogen reduction reaction (NRR) mechanism is still imperfect, which seriously impedes the development of NRR. In situ characterization techniques offer insight into the alterations taking place at the electrode/electrolyte interface throughout the NRR process, thereby helping us to explore the NRR mechanism in-depth and ultimately promote the development of efficient catalytic systems for NRR. Herein, we introduce the popular theories and mechanisms of the electrochemical NRR and provide an extensive overview on the application of various in situ characterization approaches for on-site detection of reaction intermediates and catalyst transformations during electrocatalytic NRR processes, including different optical techniques, X-ray-based techniques, electron microscopy, and scanning probe microscopy. Finally, some major challenges and future directions of these in situ techniques are proposed.

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Electrocatalytic upgrading of nitrogenous wastes into value-added chemicals: A review

Cited by 13 publications

References 244 publications

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Harnessing Ash for Sustainable CO₂ Absorption: Current Strategies and Future Prospects

In Situ Characterization Techniques for Electrochemical Nitrogen Reduction Reaction

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Electrocatalytic upgrading of nitrogenous wastes into value-added chemicals: A review

Cited by 13 publications

References 244 publications

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO2 Hollow Spheres

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO2 Hollow Spheres

Harnessing Ash for Sustainable CO2 Absorption: Current Strategies and Future Prospects

In Situ Characterization Techniques for Electrochemical Nitrogen Reduction Reaction

Contact Info

Product

Resources

About

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Terpyridine-Decorated Polymer Nanosphere Latex: Template Nanocarriers for the Synthesis of Cu–CeO₂ Hollow Spheres

Harnessing Ash for Sustainable CO₂ Absorption: Current Strategies and Future Prospects