Current Applied Physics最新文献

Enhanced Photoelectrochemical performance by rapid electron transfer in reduced graphene oxide/CaWO4 composite photoanode

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-18 DOI: 10.1016/j.cap.2025.02.006

H.N.M. Sarangika , E.G.O.D. Egodawaththa , H.M.B.I. Gunathilaka , V.P.S. Perera , S. Ghosh , C. Bhattacharya

{"title":"Enhanced Photoelectrochemical performance by rapid electron transfer in reduced graphene oxide/CaWO4 composite photoanode","authors":"H.N.M. Sarangika , E.G.O.D. Egodawaththa , H.M.B.I. Gunathilaka , V.P.S. Perera , S. Ghosh , C. Bhattacharya","doi":"10.1016/j.cap.2025.02.006","DOIUrl":"10.1016/j.cap.2025.02.006","url":null,"abstract":"<div><div>Scheelite oxides and their derivatives are renowned for their exceptional stability, high photocatalytic efficiency, and versatile structural design, positioning them as a promising category of semiconductor photocatalysts. In this study, Scheelite calcium tungstate (CaWO<sub>4</sub>) films were fabricated on fluorine-doped tin oxide (FTO) substrates using the chemical bath deposition (CBD), followed by calcination. Graphene oxide (GO) was independently synthesized via the Hummers' method and subsequently deposited onto the CaWO<sub>4</sub> films through electrophoretic deposition (EPD) to form reduced graphene oxide/CaWO<sub>4</sub> (rGO/CaWO<sub>4</sub>) composites. The incorporation of rGO was found to play a crucial role in enhancing electron transport within the rGO/CaWO<sub>4</sub> films. In photoelectrochemical (PEC) water splitting, the rGO/CaWO<sub>4</sub> demonstrated a remarkable photocurrent of 13 μA cm<sup>−2</sup> at 1 V, far exceeding the 0.4 μA cm<sup>−2</sup> achieved by pristine CaWO<sub>4</sub> under identical conditions. This 32.5-fold enhancement in photocurrent is attributed to the rapid electron transfer facilitated by the rGO in the composite structure.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 22-29"},"PeriodicalIF":2.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Excitation wavelength dependent multiple biomolecule SERS responses from Bi/ZnO thin films towards ultrasensitive Hemoglobin and L-tyrosine detections

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-17 DOI: 10.1016/j.cap.2025.02.008

Risa Marium Philip, D. Bharathi Mohan

引用次数: 0

Long-term polarization stabilization of a polarization maintaining fiber via dynamic temperature control

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-11 DOI: 10.1016/j.cap.2025.02.005

Sanghyun Park , Jaeuk Baek , Min-Hwan Lee , Sanglok Lee , Geol Moon

引用次数: 0

Fabrication and characterization of heterostructure WO3/BiVO4/TiO2 photocatalyst for efficient performance of photoelectrochemical water splitting

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-11 DOI: 10.1016/j.cap.2025.02.004

Aye Myint Myat Kyaw , Gasidit Panomsuwan , Ratiporn Munprom , Oi Lun Li

{"title":"Fabrication and characterization of heterostructure WO3/BiVO4/TiO2 photocatalyst for efficient performance of photoelectrochemical water splitting","authors":"Aye Myint Myat Kyaw , Gasidit Panomsuwan , Ratiporn Munprom , Oi Lun Li","doi":"10.1016/j.cap.2025.02.004","DOIUrl":"10.1016/j.cap.2025.02.004","url":null,"abstract":"<div><div>Hydrogen evolution through photoelectrochemical (PEC) water splitting using semiconductor photocatalysts and solar energy is a highly promising method for sustainable energy production. Among the various photocatalyst combinations, the heterostructure of tungsten trioxide (WO<sub>3</sub>) and bismuth vanadate (BiVO<sub>4</sub>) has garnered attention for PEC applications due to its wide availability, cost-effectiveness, and suitable bandgap energy. The formation of a heterojunction between WO<sub>3</sub> and BiVO<sub>4</sub> improves charge separation and transfer, enhancing the overall photocatalytic performance. However, their performance is hindered by poor stability in aqueous solutions. To address this, a titanium dioxide (TiO<sub>2</sub>) top layer was added to enhance the photoanode's stability by preventing direct contact with the electrolyte. A triple-layered WO<sub>3</sub>/BiVO<sub>4</sub>/TiO<sub>2</sub> heterostructure was fabricated via hydrothermal and spin-coating methods on an FTO substrate. The crystal structure, morphology, optical properties, and PEC performance of the photoanodes were systematically analyzed at each fabrication step. The WO<sub>3</sub>/BiVO<sub>4</sub>/TiO<sub>2</sub> heterostructure demonstrated excellent photo-switching performance, and stability tests confirmed that the TiO<sub>2</sub> layer effectively protected the underlying layers from photo corrosion, improving long-term efficiency.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"72 ","pages":"Pages 87-92"},"PeriodicalIF":2.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of heat-affected zone on the nanosecond pulsed laser scanning ablation of Ag nanoparticle layer

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-06 DOI: 10.1016/j.cap.2025.02.003

Hee-Lak Lee , Arif Hussain , Yoon-Jae Moon , Jun Young Hwang , Seung Jae Moon

{"title":"Effect of heat-affected zone on the nanosecond pulsed laser scanning ablation of Ag nanoparticle layer","authors":"Hee-Lak Lee , Arif Hussain , Yoon-Jae Moon , Jun Young Hwang , Seung Jae Moon","doi":"10.1016/j.cap.2025.02.003","DOIUrl":"10.1016/j.cap.2025.02.003","url":null,"abstract":"<div><div>Pulsed laser ablation can be used in printed electronics to remove silver (Ag) nanoparticle (NP) inks from undesired locations. Removing Ag NP involves a scanning ablation process, in which laser beams are irradiated on spots irradiated by a previous laser beam. In this study, that the heat-affected zone (HAZ), which is the peripheral area of the ablation crater where NPs are not ablated but are affected by heat, greatly influences the ablation aspects. Ablation failure was observed in short laser beam displacements, where the irradiated laser energy per unit length increased. Additional experimental investigation and thermal analysis concluded that property variations, such as increased reflectivity and thermal conductivity, suppressed the temperature increase and made it more difficult for the HAZ and nearby Ag NP to be ablated. Moreover, the ablated lines formed by a higher laser beam fluence and shorter laser beam displacement were not as ablated as the lines formed with a relatively lower laser beam fluence and longer laser beam displacement. Through detailed analysis, we deduced that the local fluence of the second laser beam irradiated on the HAZ was a more critical parameter than the peak fluence of the laser beam. We suggest that in the case of a Gaussian laser beam, the laser beam displacement should be equal to the radius of the ablation crater and HAZ to maximize the local fluence irradiated on the HAZ and minimize the adverse effects of the HAZ. The results can provide a guideline for future manufacturers to perform Ag NP layer ablation while considering the influence of the HAZ.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"72 ","pages":"Pages 65-77"},"PeriodicalIF":2.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Sr doping on structural, morphological, optical, photocatalytic and antifungal properties of NiO thin films prepared by spray coating technique

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-05 DOI: 10.1016/j.cap.2025.02.001

Srinivasa N. V , Basavaraj Angadi , Mahesh H. M , Srinivas C , Rajganesh M

{"title":"Investigation of Sr doping on structural, morphological, optical, photocatalytic and antifungal properties of NiO thin films prepared by spray coating technique","authors":"Srinivasa N. V , Basavaraj Angadi , Mahesh H. M , Srinivas C , Rajganesh M","doi":"10.1016/j.cap.2025.02.001","DOIUrl":"10.1016/j.cap.2025.02.001","url":null,"abstract":"<div><div>Metal oxide nanoparticles have been recognized as efficient, environmentally friendly alternatives to currently available materials for various industries, including food, dye, pharmaceutical, chemical, and environmental treatment. Given the extensive use of metal oxide thin films across these fields, the current work reports the successful synthesis of nanocrystalline Sr-doped NiO films using an eco-friendly spray pyrolysis technique for the photocatalytic degradation of Bromophenol Blue pollutant in wastewater treatment. These films were characterized by XRD, Raman, FTIR, FESEM, UV–Vis, and PL techniques. XRD analysis reveals that the crystallite size decreases from 14 nm to 9 nm as the dopant concentration increases. FTIR and Raman analyses identified surface oxygen interstitials and Ni defect-related vibrations. FESEM showed a continuous surface film with spherical polycrystalline morphology. An increase in optical transmittance and bandgap with the incorporation of Sr dopant was observed in the UV–Vis data. A decrease in PL intensity with increasing dopant concentration suggests a suppression of the recombination rate, as indicated by the PL analysis. The photocatalytic activity of the Sr-doped films was evaluated with Bromophenol Blue (BB) under UV–visible irradiation. The 6 % Sr-doped films successfully decomposed 81 % of the BB, demonstrating their effectiveness as catalysts. Additionally, these films exhibited a lower recombination rate, smaller particle size, and higher surface roughness. The 6 % Sr-doped sample showed the highest zones of inhibition, measuring 25 mm and 23 mm for <em>Aspergillus Niger</em> and <em>Penicillium</em> fungi, respectively. Overall, the Sr-doped NiO films were found to be effective in both the degradation of BB and antifungal activity.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"72 ","pages":"Pages 39-50"},"PeriodicalIF":2.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conductivity and magneto-optical response of film structures based on tungsten nanolayers with different phase composition

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-04 DOI: 10.1016/j.cap.2025.02.002

A.V. Prokaznikov , R.V. Selyukov , V.A. Paporkov

引用次数: 0

Hydrothermal synthesis of iron oxide grown on nickel foam for supercapacitors

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-04 DOI: 10.1016/j.cap.2025.01.011

Keshab Pandey , Yong Gyu Lee , Hae Kyung Jeong

引用次数: 0

Enhanced efficiency of dye-sensitized solar cells (DSSCs) with polyaniline-decorated FeCo2O4 counter electrodes: Synthesis, characterization, and performance analysis

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-03 DOI: 10.1016/j.cap.2025.01.017

M.Z. Najihah , M.F. Aizamddin , Farish Irfal Saaid , Tan Winie

{"title":"Enhanced efficiency of dye-sensitized solar cells (DSSCs) with polyaniline-decorated FeCo2O4 counter electrodes: Synthesis, characterization, and performance analysis","authors":"M.Z. Najihah , M.F. Aizamddin , Farish Irfal Saaid , Tan Winie","doi":"10.1016/j.cap.2025.01.017","DOIUrl":"10.1016/j.cap.2025.01.017","url":null,"abstract":"<div><div>In this work, FeCo<sub>2</sub>O<sub>4</sub> (FCO)/polyaniline (PANI) composite has been prepared and its performance in DSSCs has been compared with pristine FCO, PANI and platinum (Pt). X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HR-TEM) have been employed for the structural and morphological analyses. Contact angle measurement has been performed to examine the contact between electrode and electrolyte. Electrocatalytic effects have been investigated through cyclic voltammetry (CV) and Tafel polarization. Electrochemical impedance spectroscopy (EIS) has been carried out to study the internal resistance and charge transfer kinetics. The FCO exhibits flower-like nanosheets structure whereas the PANI shows irregular coral-reef structure. A similar flower-like morphology is observed in the FCO/PANI composite. The surface of the composite appears to be rough and porous, which improves the electrode-electrolyte contact, as supported from the contact angle measurement. The FCO/PANI composite exhibits the highest electrocatalytic activity and the lowest charge transfer resistance, followed by PANI, FCO and Pt. The efficiencies of DSSCs assembled with FCO, PANI, FCO/PANI and Pt counter electrodes are 4.22, 5.58, 6.38, and 3.58 %, respectively. Superior cell efficiency with FCO/PANI counter electrode is attributed to its rough and porous morphology, greater adherence on the FTO glass and higher I<sub>3</sub><sup>−</sup> reduction rate.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"72 ","pages":"Pages 28-38"},"PeriodicalIF":2.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A critical review of the refractory high-entropy materials: RHEA alloys, composites, ceramics, additively manufactured RHEA alloys

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-01 DOI: 10.1016/j.cap.2024.11.001

Seval Hale Guler , Alican Yakin , Omer Guler , Arun K. Chattopadhyay , Tuncay Simsek

{"title":"A critical review of the refractory high-entropy materials: RHEA alloys, composites, ceramics, additively manufactured RHEA alloys","authors":"Seval Hale Guler , Alican Yakin , Omer Guler , Arun K. Chattopadhyay , Tuncay Simsek","doi":"10.1016/j.cap.2024.11.001","DOIUrl":"10.1016/j.cap.2024.11.001","url":null,"abstract":"<div><div>In this study, the traits, production methods, and applications of refractory high-entropy materials—including refractory high-entropy alloys (RHEAs), refractory high-entropy composites (RHE-Cs), and refractory high-entropy ceramics (RHE-Ce)—which are part of the broader category of refractory high-entropy materials with a wide range of applications, have been thoroughly examined and discussed. RHEAs have emerged as materials that exhibit superior properties, such as high melting temperatures, excellent temperature resistance, and high wear and corrosion resilience, in addition to high mechanical and fatigue strength. These attributes have made them extensively studied materials in recent times. The properties of RHEAs suggest their safe operation in challenging environments such as nuclear reactors, gas turbines, aerospace, and energy production. Among refractory materials, RHE-Cs stand out for their high strength and low density, showing significant potential for use in the automotive, aerospace, and space industries. Another group with a wide range of applications, RHE-Ce materials, is distinguished by their high-temperature resilience, high hardness, and low thermal conductivity, making them suitable for high-temperature environments. Refractory materials are generally fabricated using traditional techniques such as arc melting, powder metallurgy, and magnetron sputtering. In this study, along with traditional production methods, additive manufacturing techniques which have revolutionized the manufacturing field are discussed concerning their applications in refractory material production. Additive manufacturing methods enable the achievement of high temperatures and the production of homogeneous, single-phase solid solutions, making them suitable for fabricating refractory materials with high melting points.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"70 ","pages":"Pages 87-124"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0