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Fluorinated reduced graphene oxide nanosheets for symmetric supercapacitor device performance 实现对称超级电容器器件性能的氟化还原氧化石墨烯纳米片
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-10-05 DOI: 10.1016/j.flatc.2024.100757
Vediyappan Thirumal , Bathula Babu , Planisamy Rajkumar , Jin-Ho Kim , Kisoo Yoo
{"title":"Fluorinated reduced graphene oxide nanosheets for symmetric supercapacitor device performance","authors":"Vediyappan Thirumal ,&nbsp;Bathula Babu ,&nbsp;Planisamy Rajkumar ,&nbsp;Jin-Ho Kim ,&nbsp;Kisoo Yoo","doi":"10.1016/j.flatc.2024.100757","DOIUrl":"10.1016/j.flatc.2024.100757","url":null,"abstract":"<div><div>This study explores the potential of using spent lithium-ion battery anodes (graphite) for fabricating symmetric energy devices through a simple regeneration process. Specifically, the use of fluorine-doped reduced graphene oxide (RGO) nanosheets derived from waste batteries as the basis for a symmetric supercapacitor (SC) device is investigated. To enhance the electrochemical energy storage capabilities, a facile hydrothermal technique is employed to synthesize fluorinated graphene. Fluorination of the graphene sheets is successfully realized, as confirmed by the presence of boron with a 2.94 at.% fluorine-doped level, according to the Energy dispersive spectroscopy (EDS) spectrum analysis. Electrochemical analysis of the F-RGO electrode performance consistent with electric double-layer capacitance. Moreover, with a three-electrode system, the F-RGO electrode achieves a maximum specific capacitance of 207F/g under a current density of 1 A/g. A two-electrode symmetric device employing F-RGO exhibits a specific capacitance of 54F/g at 1 A/g. Furthermore, electrochemical impedance measurements demonstrate low charge transfer resistance (Rct) values, specifically 8.63 Ω for F-RGO, signifying improved electrochemical performance. Thus, fluorine atomic doping in RGO nanosheets contributes to the improvements of the specific capacitance and overall superior electrochemical performance of F-RGO, and F-RGO is a highly electrochemical active material for high-performance energy storage electrodes for SCs.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100757"},"PeriodicalIF":5.9,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating the role of graphene in the formation and stability of β-phase antimonene islands 研究石墨烯在β相锑岛的形成和稳定性中的作用
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-10-05 DOI: 10.1016/j.flatc.2024.100754
M. Guadalupe Gómez-Farfán , L. Avilés-Félix , Esteban D. Cantero , Esteban A. Sánchez , Laura N. Serkovic-Loli
{"title":"Investigating the role of graphene in the formation and stability of β-phase antimonene islands","authors":"M. Guadalupe Gómez-Farfán ,&nbsp;L. Avilés-Félix ,&nbsp;Esteban D. Cantero ,&nbsp;Esteban A. Sánchez ,&nbsp;Laura N. Serkovic-Loli","doi":"10.1016/j.flatc.2024.100754","DOIUrl":"10.1016/j.flatc.2024.100754","url":null,"abstract":"<div><div>Two-dimensional materials have shown tremendous potential for various technological applications. Particularly, 2D antimony exhibits high applicability in electronics, sensors, and batteries. This 2D material, known as antimonene, presents two stable phases: <span><math><mrow><mi>α</mi></mrow></math></span> (rectangular lattice) and <span><math><mrow><mi>β</mi></mrow></math></span> (honeycomb lattice), whose formation depends on the substrate where antimony is deposited. In this study, we investigated the growth of antimonene islands on graphene, forming an antimonene/graphene heterostructure. To demonstrate the significance of graphene in the synthesis of antimonene, we also studied antimony deposited on a bare copper foil similar to the one used for the graphene substrate. Antimony deposition exhibits the <span><math><mrow><mi>β</mi></mrow></math></span> phase antimonene structure when deposited on top of monolayer graphene, but not when deposited on a bare copper foil, nor on top of multilayer graphene. Additionally, we investigated the stability of the heterostructure after exposure to air. Pure antimony islands are formed when evaporated in high vacuum on top of graphene and copper substrates, and antimony atoms oxidize upon exposure to air. After annealing the sample in ultra-high-vacuum at temperatures lower than 200 <span><math><mrow><mi>°</mi></mrow></math></span>C, more than half of pure antimony is recovered and almost all oxidized antimony is desorbed from the graphene substrate. In contrast, almost none of the oxidized antimony is desorbed from the bare copper substrate, highlighting the key role of the heterostructure on the formation and preservation of the physical and chemical properties of the deposited 2D material.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100754"},"PeriodicalIF":5.9,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the potential of α-Ge(1 1 1) monolayer in photocatalytic water splitting for hydrogen production 探索α-Ge(1 1 1)单层在光催化水分离制氢中的潜力
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-29 DOI: 10.1016/j.flatc.2024.100753
Vinícius G. Garcia , Guilherme J. Inacio , Luciano F. Filho , Luíza T. Pacheco , Fernando N.N. Pansini , Marcos G. Menezes , Wendel S. Paz
{"title":"Exploring the potential of α-Ge(1 1 1) monolayer in photocatalytic water splitting for hydrogen production","authors":"Vinícius G. Garcia ,&nbsp;Guilherme J. Inacio ,&nbsp;Luciano F. Filho ,&nbsp;Luíza T. Pacheco ,&nbsp;Fernando N.N. Pansini ,&nbsp;Marcos G. Menezes ,&nbsp;Wendel S. Paz","doi":"10.1016/j.flatc.2024.100753","DOIUrl":"10.1016/j.flatc.2024.100753","url":null,"abstract":"<div><div>In this study, the structural, electronic, and optical properties of 2D α-Ge(1 1 1) are investigated using Density Functional Theory (DFT) calculations, complemented by many-body perturbation theory calculations based on the GW/BSE approach. The thermodynamic stability of this material is assessed through <em>ab initio</em> molecular dynamics simulations (AIMD), and their dynamic stability is confirmed via phonon dispersion calculations. The analysis of the optical properties reveals significant absorption peaks in both visible and ultraviolet regions, with an absorption edge at 47 eV (1<em>.</em>87 eV without excitonic effects). The band edges are well-aligned with water redox potentials at neutral pH, making them suitable for water-splitting applications. For other pH levels, we find the process may be feasible through the participation of different excited states populated by light absorption. Remarkably, the α-Ge(1 1 1) monolayer demonstrates a predicted solar-to-hydrogen conversion efficiency of 34.80 %, outperforming many other two-dimensional materials. These findings position the α-Ge(1 1 1) monolayer as a promising candidate for developing efficient photocatalytic materials for hydrogen generation via overall water splitting.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100753"},"PeriodicalIF":5.9,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring phosphorene-protein interactions: An integrated computational and spectroscopic investigation 探索磷烯与蛋白质的相互作用:计算与光谱学综合研究
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-26 DOI: 10.1016/j.flatc.2024.100752
Silvia Rinaldi , Amalia Malina Grigoras , Maria Caporali , Manuel Serrano-Ruiz , Maurizio Peruzzini , Andrea Ienco , Loredana Latterini
{"title":"Exploring phosphorene-protein interactions: An integrated computational and spectroscopic investigation","authors":"Silvia Rinaldi ,&nbsp;Amalia Malina Grigoras ,&nbsp;Maria Caporali ,&nbsp;Manuel Serrano-Ruiz ,&nbsp;Maurizio Peruzzini ,&nbsp;Andrea Ienco ,&nbsp;Loredana Latterini","doi":"10.1016/j.flatc.2024.100752","DOIUrl":"10.1016/j.flatc.2024.100752","url":null,"abstract":"<div><div>Among 2D materials, exfoliated black phosphorus (or phosphorene) shows great promise for applications in biological domains. However, despite its performances, little is known about the intricate and dynamic interactions that this material can form with proteins. This increases the risk of off-target effects and adds complexity in designing phosphorene-based devices with tailored properties. In this study, we present a straightforward and easily implementable pipeline that integrates spectroscopies with Molecular Dynamics simulations to explore the dynamic interplay between phosphorene and a protein system. Using lysozyme as a deeply investigated reference protein, we employed two theoretical protein models with unique secondary structure folds to increase the descriptive power of the approach and disentangle the complexity and variability of experimental data into a few primary drivers of protein-phosphorene interactions. Our results show that the 2D material does not significantly alter the protein structure, but the observed conformational changes are influenced by the secondary fold. Indeed, while the beta structure interacts mainly through unfolded regions, the alpha fold favours phosphorene binding through structured clusters of residues, leading to more significant structural and dynamic perturbations. By utilizing this pipeline, we have gained valuable insights into the molecular recognition mechanism of phosphorene, enhancing the development of improved phosphorene-based devices. In addition, our methodology offers potential for further applications in biomedicine to characterise interfaces between other 2D (nano)materials and biological entities.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100752"},"PeriodicalIF":5.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of interlayer stacking arrangement on the dielectric properties of hexagonal boron nitride thin films 层间堆叠排列对六方氮化硼薄膜介电性能的影响
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-26 DOI: 10.1016/j.flatc.2024.100751
Mina Maruyama, Susumu Okada
{"title":"Effect of interlayer stacking arrangement on the dielectric properties of hexagonal boron nitride thin films","authors":"Mina Maruyama,&nbsp;Susumu Okada","doi":"10.1016/j.flatc.2024.100751","DOIUrl":"10.1016/j.flatc.2024.100751","url":null,"abstract":"<div><div>Electrostatic properties of hexagonal boron nitride (hBN) thin films with different stacking arrangements were investigated using density functional theory combined with the effective screening medium method. Our calculations showed that the dielectric properties across layers of hBN thin films are sensitive to both the interlayer stacking arrangement and the number of layers. The polarization of bilayer hBN gradually decreases with increasing lateral displacement from AB stacking, and polarity inversion occurs for particular stacking arrangements. The polarity of bilayer hBN is sensitive to twisting displacement. The polarity monotonically increases with increasing the number of layers in hBN films with rhombohedral stacking arrangement.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100751"},"PeriodicalIF":5.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly porous Pt3Ni nanosheets for enhanced hydrogen evolution reaction 用于增强氢气进化反应的高孔隙 Pt3Ni 纳米片
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-24 DOI: 10.1016/j.flatc.2024.100750
Mrinal Kanti Kabiraz , Hafidatul Wahidah , Jong Wook Hong , Sang-Il Choi
{"title":"Highly porous Pt3Ni nanosheets for enhanced hydrogen evolution reaction","authors":"Mrinal Kanti Kabiraz ,&nbsp;Hafidatul Wahidah ,&nbsp;Jong Wook Hong ,&nbsp;Sang-Il Choi","doi":"10.1016/j.flatc.2024.100750","DOIUrl":"10.1016/j.flatc.2024.100750","url":null,"abstract":"<div><div>Two-dimensional (2D) nanosheets with high surface-to-volume ratios have garnered significant attention for their electrocatalytic properties. This study explores the characterization and electrocatalytic performance of highly porous monometallic platinum (Pt) nanosheets and bimetallic platinum-nickel (Pt<sub>3</sub>Ni) nanosheets for the hydrogen evolution reaction (HER) in both alkaline and acidic media. Advanced characterization techniques were employed to elucidate the morphological and compositional properties of the Pt and Pt<sub>3</sub>Ni nanosheets. Electrochemical characterization demonstrated that Pt<sub>3</sub>Ni nanosheets/C outperformed Pt nanosheets/C and commercial Pt/C in terms of HER activity and stability. The enhanced HER performance of Pt<sub>3</sub>Ni nanosheets/C is believed to be due to the dominance of the Volmer-Tafel mechanism. These findings highlight the potential of 2D bimetallic nanosheets and suggest a promising avenue for advancing hydrogen energy technologies.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100750"},"PeriodicalIF":5.9,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-situ Profiling of Environmental Hazardous Sulfamethoxazole in Aquatic and Artificial Saliva samples Using Perovskite Structured Bismuth Ferrite Incorporated Halloysite Nanotubes 利用包晶结构铋铁氧体掺杂霍洛石纳米管原位分析水生样本和人工唾液样本中的环境有害物质磺胺甲噁唑
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-20 DOI: 10.1016/j.flatc.2024.100749
Muthumariappan Akilarasan , Santhiyagu Sahayaraj Rex Shanlee , Shen-Ming Chen , Wasif Farooq , Pichai Christina Ruby Stella
{"title":"In-situ Profiling of Environmental Hazardous Sulfamethoxazole in Aquatic and Artificial Saliva samples Using Perovskite Structured Bismuth Ferrite Incorporated Halloysite Nanotubes","authors":"Muthumariappan Akilarasan ,&nbsp;Santhiyagu Sahayaraj Rex Shanlee ,&nbsp;Shen-Ming Chen ,&nbsp;Wasif Farooq ,&nbsp;Pichai Christina Ruby Stella","doi":"10.1016/j.flatc.2024.100749","DOIUrl":"10.1016/j.flatc.2024.100749","url":null,"abstract":"<div><div>Sulfamethoxazole (SMX), a widely used antibiotic, poses significant environmental and health risks due to its persistence and mobility in water systems, potentially leading to antibiotic resistance and ecological harm. Herein, we developed an electrochemical sensor based on Bismuth Ferrite (BiFeO<sub>3</sub>)/Halloysite Nanotube (BFO/HNT) composite for sensitive and selective SMX detection. The BFO/HNT composite was synthesized via a hydrothermal method and comprehensively characterized using EDS mapping, HRTEM, XRD, FT-IR, and XPS analysis. The BFO/HNT composite enhances the sensor’s performance due to its unique properties, such as increased electrochemical surface area (ECSA) and efficient electron transfer capability. The B-cation (Fe) in the BiFeO<sub>3</sub> matrix plays a crucial role in boosting the electrochemical response by facilitating redox reactions. In addition, the HNTs provide a high surface area and excellent adsorption capabilities, which improve the sensor’s sensitivity by facilitating better interaction with SMX molecules. As the results, the prepared sensor demonstrates an impressive linear detection range of 0.01 to 2 µM and 22 to 122 µM, with a detection limit as low as 0.017 µM. Practical applications were validated by detecting SMX in tap water and artificial saliva, achieving high recovery rates of 98.87 % and 99.11 %.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100749"},"PeriodicalIF":5.9,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142318549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
G-C3N4 tubes decorated with MnMoO4·H2O: Outstanding S-scheme photocatalyst for detoxification of water pollutants upon visible light 用 MnMoO4-H2O 装饰的 G-C3N4 管:利用可见光解毒水污染物的杰出 S 型光催化剂
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-14 DOI: 10.1016/j.flatc.2024.100738
Zahra Lahootifar , Aziz Habibi-Yangjeh , Zahra Salmanzadeh-Jamadi , Alireza Khataee
{"title":"G-C3N4 tubes decorated with MnMoO4·H2O: Outstanding S-scheme photocatalyst for detoxification of water pollutants upon visible light","authors":"Zahra Lahootifar ,&nbsp;Aziz Habibi-Yangjeh ,&nbsp;Zahra Salmanzadeh-Jamadi ,&nbsp;Alireza Khataee","doi":"10.1016/j.flatc.2024.100738","DOIUrl":"10.1016/j.flatc.2024.100738","url":null,"abstract":"<div><p>Recently, the utilization of heterogeneous photocatalysts has been proposed as an effective solution for environmental purification, as one of the solar energy conversion processes, under mild conditions. In this research, MnMoO<sub>4</sub>·H<sub>2</sub>O nanoparticles were anchored on tubular g-C<sub>3</sub>N<sub>4</sub> (abbreviated as TGCN) by a one-pot hydrothermal route. The phase structure, electronic environment, spectroscopic characteristics, composition, morphology, surface area, and electrochemical properties of the resultant materials were explored using XRD, XPS, EDX, FESEM, HRTEM, FTIR, PL, photocurrent, EIS, and BET analyses. The photocatalytic activity of TGCN/MnMoO<sub>4</sub>·H<sub>2</sub>O (20 %) nanocomposite was 4.25, 5.36, 9.07, 12.4, and 8.84 times better than modified GCN, and 3.91, 2.77, 6.24, 10.9, and 6.82 times higher than MnMoO<sub>4</sub>·H<sub>2</sub>O in removals of tetracycline, rhodamine B, methylene blue, methyl orange, and fuchsine pollutants, respectively. The improved visible-light absorption and rapid charge migration/separation between TGCN and MnMoO<sub>4</sub>·H<sub>2</sub>O counterparts through S-scheme heterojunction route were the key reasons for the boosted photocatalytic performance. The biocompatibility of solution after decomposition of tetracycline via the growth of wheat seeds was verified. Finally, the stability of the binary TGCN/MnMoO<sub>4</sub>·H<sub>2</sub>O (20 %) heterostructure was measured by the stability test after four reuses.</p></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100738"},"PeriodicalIF":5.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green synthesis of Z-scheme N-doped g-C3N4/Nd-doped ZnO heterostructure by pomegranate waste peel with enhanced photocatalytic performance for organic pollutants removal and antibacterial activity 利用石榴废皮绿色合成 Z 型 N 掺杂 g-C3N4/Nd 掺杂 ZnO 异质结构,提高光催化去除有机污染物的性能和抗菌活性
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-10 DOI: 10.1016/j.flatc.2024.100736
Seyed Ali Zargar , Mitra Gharivi , Omid Bagheri , Adrine Malek Khachatourian , Ali Hashemi
{"title":"Green synthesis of Z-scheme N-doped g-C3N4/Nd-doped ZnO heterostructure by pomegranate waste peel with enhanced photocatalytic performance for organic pollutants removal and antibacterial activity","authors":"Seyed Ali Zargar ,&nbsp;Mitra Gharivi ,&nbsp;Omid Bagheri ,&nbsp;Adrine Malek Khachatourian ,&nbsp;Ali Hashemi","doi":"10.1016/j.flatc.2024.100736","DOIUrl":"10.1016/j.flatc.2024.100736","url":null,"abstract":"<div><p>Nowadays, the growing global population and increased industrialization have exacerbated water pollution, posing a significant environmental threat. To tackle this issue, there is an urgent need for effective catalysts to remove pollutants. This study developed a novel N-doped g-C<sub>3</sub>N<sub>4</sub>/Nd-doped ZnO (NZ) heterostructure using a green approach by incorporating pomegranate peel waste as a stabilizing and capping agent. Characterization techniques confirmed successful NZ nanohybrid preparation. The synthesized NZ displayed high photocatalytic activity in degrading methylene blue (MB) and tetracycline (TC) pollutants found in wastewater, achieving degradation efficiencies of 95.3 % and 98.3 %, respectively. Meanwhile, it demonstrated satisfactory photostability after five-cycle experiments. The radical trapping experiments revealed that superoxide (<sup><img></sup>O<sub>2</sub><sup>−</sup>) and hydroxyl (<sup><img></sup>OH) are the dominant active species and play an essential role in photocatalytic pollutant deterioration. Additionally, it exhibited suitable antimicrobial activity against <em>Staphylococcus aureus</em> and <em>Vibrio cholerae</em> bacterial strains. The enhanced performance is attributed to the abundant reaction sites of porous N-doped g-C<sub>3</sub>N<sub>4</sub>, the photo-redox capability of Nd-doped ZnO, and the efficient charge separation process in the Z-type heterojunction. This work advances sustainable and eco-friendly chemistry for the biosynthesis of organic/inorganic heterojunctions used in pollutant degradation and bacterial disinfection of wastewater.</p></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100736"},"PeriodicalIF":5.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of nickel oxide decorated CNTs/GO nanohybrid: A multifunctional electrocatalyst for overall electrochemical water splitting 制备氧化镍装饰的 CNTs/GO 纳米杂化物:用于整体电化学水分离的多功能电催化剂
IF 5.9 3区 材料科学
FlatChem Pub Date : 2024-09-07 DOI: 10.1016/j.flatc.2024.100732
Satam Alotibi , Awais Khalid , Eddie Gazo Hanna , Zaid M. Aldhafeeri , Mudassir Hasan , Tuba Al Haq , Abid Ali
{"title":"Fabrication of nickel oxide decorated CNTs/GO nanohybrid: A multifunctional electrocatalyst for overall electrochemical water splitting","authors":"Satam Alotibi ,&nbsp;Awais Khalid ,&nbsp;Eddie Gazo Hanna ,&nbsp;Zaid M. Aldhafeeri ,&nbsp;Mudassir Hasan ,&nbsp;Tuba Al Haq ,&nbsp;Abid Ali","doi":"10.1016/j.flatc.2024.100732","DOIUrl":"10.1016/j.flatc.2024.100732","url":null,"abstract":"<div><p>Hydrogen production from water as renewable energy resource is vital to fulfil the huge energy demands without any hazardous environmental impact. Pursuing the efficient, durable and economical electrocatalyst other than benchmark expensive materials such as Pt, Ru, and Ir, for water electrolysis is a big challenge to produce the hydrogen as clean fuels. Here, we have successfully decorated nickel oxides nanoparticles over the carbon nanotubes covered by the graphene oxide layers (GO/NiO@CNTs/GO) using a facile hydrothermal method and utilized as electrocatalyst for electrochemical water splitting. The surface morphology and structure was assessed using a variety of analytical techniques, including scanning electron microscopy (SEM), energy dispersive X-rays spectroscopy (EDX) and X-ray diffraction (XRD). As prepared nanohybrid (GO/NiO@CNTs/GO) was utilized as multifunctional electrocatalyst to investigate the water electrolysis potential via different electrochemical techniques including linear sweep voltammetry (LSV), and cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry. The fabricated electrode exhibited a lower overpotential of 236 mV and 208 mV at the standard current density of 10 mAcm<sup>−2</sup> under alkaline and acidic conditions, respectively. Enhanced double layer capacitance (<em>C<sub>dl</sub></em>) and reduced charge transfer resistance (<em>R<sub>ct</sub></em>) also showed the boosted performance for the hybrid materials with long term stability. The carbon based nanohybrid (GO/NiO@CNTs/GO) showed the promising potential having multifunctional characteristics including oxygen and hydrogen evolution reactions along with overall electrochemical water splitting.</p></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"48 ","pages":"Article 100732"},"PeriodicalIF":5.9,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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