Defect Engineering in Nanocatalysts: From Design and Synthesis to Applications

Muhammad, Pir; Zada, Amir; Rashid, Jamshaid; Hanif, Sumaira; Gao, Yanan; Li, Chenchen; Li, Yuanyuan; Fan, Kelong; Wang, Yanli

doi:10.1002/adfm.202314686

Cited by 24 publications

(1 citation statement)

References 431 publications

(431 reference statements)

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“…For instance, it has been noted that adding 4% CuO increases water's thermal conductivity by 20%. CuO is a small bandage semiconducting compound that finds usage in photothermal and photoconductive applications (Agarwal et al, 2016;Attiya et al, 2023;Naz et al, 2023;Muhammad et al, 2024). It can be utilized in a broad range of fields, such as photodetectors, batteries, supercapacitors, magnetic recording devices, and catalysis, among many others.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Fe-doped CuO nanoparticles: Catalytic efficiency in crystal violet dye degradation and exploration of electrical properties

Bushra,

Kashif,

Khairullah

et al. 2024

Braz. J. of Sci.

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In recent times, environmental pollution has become a pressing issue. Different methods have been developed to detach hazardous materials from H2O bodies. Among these techniques, photo-catalysis has emerged as a low-cost and advanced method. However, finding a potent photocatalyst has been a topic of considerable research. Our study prepared CuO from copper acetate using hydrothermal treatment in an autoclave at 170 ºC for 14 hours. We introduced various quantities of Fe by adding FeSO4 mixture to Cu (CH3COO)2, following the identical method for preparing CuO. The resulting precipitate was cleaned with deionized H2O and dried at 100 °C. The prepared substance was then heated at 450 ºC in a muffle furnace for 60 minutes. We characterized the manufacture of photocatalysts utilizing various techniques such as Ultraviolet (UV), FT-IR, SEM, EDX, and XRD. Our Ultraviolet (UV) spectrum analysis helped us recognize the adsorption spectroscopic analysis of un-doped and doped CuO with various ratios of Fe. FTIR spectroscopic analysis helped us identify functional groups in CuO NPs. Our XRD study showed the monoclinic composition of copper oxide nanoparticles. The SEM picture suggested that NPs exist in a spherical shape. We studied the catalytic activity of synthesized NPs concerning crystal violet (CV) colorant degradation below a direct ray of light irradiation. Our results showed that the degradation productiveness, as compared to CV colorant, was about 93.52% in 180 min. This research is of great importance in the quest for effective and sustainable solutions to environmental problems. The examination of electrical properties highlighted the promising aspects of Fe-doped CuO, particularly at 6% doping. This variant demonstrated superior dielectric parameters, lower tangent loss, semiconductor-like impedance behavior, and enhanced electrical conductivity, emphasizing its potential for applications in electrical and energy storage domains.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Fe-doped CuO nanoparticles: Catalytic efficiency in crystal violet dye degradation and exploration of electrical properties

Bushra,

Kashif,

Khairullah

et al. 2024

Braz. J. of Sci.

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Multifunctional Strategies of Advanced Electrocatalysts for Efficient Urea Synthesis

Ge,

Huo,

et al. 2024

Advanced Materials

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The electrochemical reduction of nitrogenous species (such as N2, NO, NO2−, and NO3−) for urea synthesis under ambient conditions has been extensively studied due to their potential to realize carbon/nitrogen neutrality and mitigate environmental pollution, as well as provide a means to store renewable electricity generated from intermittent sources such as wind and solar power. However, the sluggish reaction kinetics and the scarcity of active sites on electrocatalysts have significantly hindered the advancement of their practical applications. Multifunctional engineering of electrocatalysts has been rationally designed and investigated to adjust their electronic structures, increase the density of active sites, and optimize the binding energies to enhance electrocatalytic performance. Here, surface engineering, defect engineering, doping engineering, and heterostructure engineering strategies for efficient nitrogen electro‐reduction are comprehensively summarized. The role of each element in engineered electrocatalysts is elucidated at the atomic level, revealing the intrinsic active site, and understanding the relationship between atomic structure and catalytic performance. This review highlights the state‐of‐the‐art progress of electrocatalytic reactions of waste nitrogenous species into urea. Moreover, this review outlines the challenges and opportunities for urea synthesis and aims to facilitate further research into the development of advanced electrocatalysts for a sustainable future.

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Vacancy Engineering Optimizing Solid/Liquid Interfacial Properties for Boosting Self‐Powered Solar‐Blind Photodetection

Zhang,

Shao,

Zhou

et al. 2024

Advanced Optical Materials

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Due to the nature of the aqueous operation characteristics of photoelectrochemical‐type (PEC) optoelectronic devices, it is vital to manipulate the semiconductor/electrolyte interfacial properties to synergistically regulate the photogenerated carrier separation, charge transport in semiconductors, and interfacial charge transfer. In this work, it is demonstrated that sulfur vacancy effectively manipulates the band structure of ZnS and works as electrochemical reaction active sites synchronously. ZnS with more sulfur vacancy forms a larger built‐in electric field at the ZnS/electrolyte interface, simultaneously boosting photogenerated charge separation efficiency and promoting charge transport in ZnS. The sulfur vacancy also functions as the interfacial electrochemical reaction active sites, thereby accelerating the interfacial electrochemical reaction kinetics and reducing photo‐oxidation behavior. Hence, the corresponding ZnS PEC photodetectors exhibit excellent self‐powered solar‐blind ultraviolet detection capability with ultrahigh responsivity of 241.71 mA W⁻1, fast rise/decay time of 15/15 ms, high detectivity of 8.9 × 1011 Jones, outstanding wavelength selectivity of 1343, and excellent stability (92.6% after 8‐month storage), which is one of state‐of‐the‐art PEC UV photodetectors. Furthermore, the prototype of an underwater wireless optical communication device is demonstrated using ZnS PEC photodetectors as the light signal receiver. This work endows new sight for ZnS applications in underwater optoelectronic devices.

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Defect Engineering in Nanocatalysts: From Design and Synthesis to Applications

Cited by 24 publications

References 431 publications

Synthesis and characterization of Fe-doped CuO nanoparticles: Catalytic efficiency in crystal violet dye degradation and exploration of electrical properties

Synthesis and characterization of Fe-doped CuO nanoparticles: Catalytic efficiency in crystal violet dye degradation and exploration of electrical properties

Multifunctional Strategies of Advanced Electrocatalysts for Efficient Urea Synthesis

Vacancy Engineering Optimizing Solid/Liquid Interfacial Properties for Boosting Self‐Powered Solar‐Blind Photodetection

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