Facile synthesis of Cr doped hierarchical ZnO nano-structures for enhanced photovoltaic performance

Iqbal, Muzaffar; Thebo, Akbar Ali; Jatoi, Wahid Bux; Tabassum, Muhammad Tayyab; Rehman, Misbah ur; Thebo, Khalid Hussain; Mohsin, Muhammad Ali; Ullah, Sami; Jatoi, Ashique Hussain; Shah, Irfan

doi:10.1016/j.inoche.2020.107902

Cited by 42 publications

(14 citation statements)

References 33 publications

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“…[14][15][16] Therefore, the rational and low-cost synthesis design of metal oxides nanomaterial with carbon functional groups is highly desired for supercapacitor. [16][17][18][19] In the present work, we demonstrate an environmentally benign, low cost, and efficient synthetic route for the preparation and functionalization of Co 3 O 4 :NiO nanomaterial using biochemicals of Euphorbia cognata Boiss (E. cognata) as carbon sources. Recently, we have functionalized and synthesized MoO 3 and ZnO based electrode material for supercapacitor using aqueous extract of E. cognata as template.…”

Section: Introductionmentioning

confidence: 98%

“…[6][7][8][9] Therefore, various electrode materials have been intensively investigated among the scientific community to enhance the performance of the electrode [7][8][9][10][11][12] It is believed that functionalization of nanomaterials is an effective approach to develop an efficient electrode. [13][14][15] The nanoscaled materials can provide large number of active sites, [16][17][18][19] and enhance electronic and ionic conductivity of the electrode.…”

Section: Introductionmentioning

confidence: 99%

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Sustainable hydrothermal synthesis of cobalt‐nickel nanomaterial for supercapacitor using green stabilizing agents

Shaheen

Ahmad

Zequine

et al. 2021

Intl J of Energy Research

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We have utilized Euphorbia cognata Boiss as a source of reducing and stabilizing agents for the synthesis and the functionalization facile Co 3 O 4 :NiO nanomaterial following hydrothermal route. The phases (Co 3 O 4 and NiO) of synthesized nanomaterial were identified by X-ray diffraction, while spherical nanostructures were scrutinized by field emission scanning electron microscopy. The X-ray photoelectron spectroscopy was used to study surface modification, which revealed the presence of organic O and organic C groups.Furthermore, Tauc plot exhibited a low bandgap of 2.58 eV proposing the improved electrochemical characteristics of synthesized nanomaterial. A reasonable capacitance of 188 and 74 F/g was revealed at 2 mV/s and at 1 A/g, respectively. While the extremely low internal resistance (R i ) of 0.8 Ω was determined in the current study, suggesting the good electrochemical conductivity of Co 3 O 4 :NiO. Therefore, the present study demonstrated the good electrochemical behavior of the fabricated electrode toward supercapacitor, which was attributed to the increased active sites due to bioactive compounds.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Sustainable hydrothermal synthesis of cobalt‐nickel nanomaterial for supercapacitor using green stabilizing agents

Shaheen

Ahmad

Zequine

et al. 2021

Intl J of Energy Research

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“…Because of its close ionic radius proximity to Zn 2+ ions, doping of Cr 3+ metal ions into ZnO has recently received a lot of interest [ 44 , 45 , 46 , 47 , 48 ]. The ionic radius of Cr 3+ (0.062 nm) and Zn 2+ (0.072 nm) is practically identical; thus, Cr 3+ ions can seamlessly replace Zn 2+ ions in the lattices of ZnO-inducing strain and hence defects in the crystal of the parent material preserving the structure [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…The ionic radius of Cr 3+ (0.062 nm) and Zn 2+ (0.072 nm) is practically identical; thus, Cr 3+ ions can seamlessly replace Zn 2+ ions in the lattices of ZnO-inducing strain and hence defects in the crystal of the parent material preserving the structure [ 44 ]. Interestingly, Cr 3+ also introduces a significant number of electrons into the doped ZnO because it contains multiple electron shells and thus, increases the performance of the devices [ 44 , 45 , 46 ]. Because of their high-performance characteristics, Cr-doped ZnO nanomaterials are used for a variety of applications and reported in the literature [ 44 , 45 , 46 , 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, Cr 3+ also introduces a significant number of electrons into the doped ZnO because it contains multiple electron shells and thus, increases the performance of the devices [ 44 , 45 , 46 ]. Because of their high-performance characteristics, Cr-doped ZnO nanomaterials are used for a variety of applications and reported in the literature [ 44 , 45 , 46 , 47 , 48 ]. Using Cr-doped ZnO nanoparticles, Nakarungsee et al fabricated a highly sensitive ammonia gas sensor operated at room temperature [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of Acute Myocardial Infarction Myoglobin Biomarker Based on Chromium-Doped Zinc Oxide Nanoparticles

et al. 2022

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In this article, we describe the fabrication and characterization of a sensor for acute myocardial infarction that detects myoglobin biomarkers using chromium (Cr)-doped zinc oxide (ZnO) nanoparticles (NPs). Pure and Cr-doped ZnO NPs (13 × 1017, 20 × 1017, and 32 × 1017 atoms/cm3 in the solid phase) were synthesized by a facile low-temperature sol-gel method. Synthesized NPs were examined for structure and morphological analysis using various techniques to confirm the successful formation of ZnO NPs. Zeta potential was measured in LB media at a negative value and increased with doping. XPS spectra confirmed the presence of oxygen deficiency in the synthesized material. To fabricate the sensor, synthesized NPs were screen-printed over a pre-fabricated gold-coated working electrode for electrochemical detection of myoglobin (Mb). Cr-doped ZnO NPs doped with 13 × 1017 Cr atomic/cm3 revealed the highest sensitivity of ~37.97 μA.cm−2nM−1 and limit of detection (LOD) of 0.15 nM for Mb with a response time of ≤10 ms. The interference study was carried out with cytochrome c (Cyt-c) due to its resemblance with Mb and human serum albumin (HSA) abundance in the blood and displayed distinct oxidation potential and current values for Mb. Cr-doped ZnO NP-based Mb biosensors showed 3 times higher sensitivity as compared to pure ZnO NP-based sensors.

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Two‐Dimensional MXene‐Based Electrocatalysts: Challenges and Opportunities

Kaleem Shabbir,

Arif,

Asghar

et al. 2024

The Chemical Record

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MXene, regarded as cutting‐edge two‐dimensional (2D) materials, have been widely explored in various applications due to their remarkable flexibility, high specific surface area, good mechanical strength, and interesting electrical conductivity. Recently, 2D MXene has served as a ideal platform for the design and development of electrocatalysts with high activity, selectivity, and stability. This review article provides a detailed description of the structural engineering of MXene‐based electrocatalysts and summarizes the uses of 2D MXene in hydrogen evolution reactions, nitrogen reduction reactions, oxygen evolution reactions, oxygen reduction reactions, and methanol/ethanol oxidation. Then, key issues and prospects for 2D MXene as a next‐generation platform in fundamental research and real‐world electrocatalysis applications are discussed. Emphasis will be given to material design and enhancement techniques. Finally, future research directions are suggested to improve the efficiency of MXene‐based electrocatalysts.

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Facile synthesis of Cr doped hierarchical ZnO nano-structures for enhanced photovoltaic performance

Cited by 42 publications

References 33 publications

Sustainable hydrothermal synthesis of cobalt‐nickel nanomaterial for supercapacitor using green stabilizing agents

Sustainable hydrothermal synthesis of cobalt‐nickel nanomaterial for supercapacitor using green stabilizing agents

Fabrication and Characterization of Acute Myocardial Infarction Myoglobin Biomarker Based on Chromium-Doped Zinc Oxide Nanoparticles

Two‐Dimensional MXene‐Based Electrocatalysts: Challenges and Opportunities

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