Journal of Materials Science: Materials in Electronics最新文献

Large electrocaloric effect in ({text{BiScO}}_{3}) doped ({text{K}}_{{0.5}}) ({text{Na}}_{{0.5}}) ({text{NbO}}_{3}) ceramics

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14049-3

Ishtiaq Ahmed Lodhi, Raju Kumar, Udai Prakash Tyagi, Satyendra Singh

{"title":"Large electrocaloric effect in ({text{BiScO}}_{3}) doped ({text{K}}_{{0.5}}) ({text{Na}}_{{0.5}}) ({text{NbO}}_{3}) ceramics","authors":"Ishtiaq Ahmed Lodhi, Raju Kumar, Udai Prakash Tyagi, Satyendra Singh","doi":"10.1007/s10854-024-14049-3","DOIUrl":"10.1007/s10854-024-14049-3","url":null,"abstract":"<div>Exploring an electrocaloric (EC) material with a large electrocaloric effect (ECE) value is of high interest and importance to realize a solid-state cooling solution. We have investigated the electrocaloric performance and energy storage density in lead-free (1-x)(text {K}_{0.5}) (text {Na}_{0.5}) (text {NbO}_{3})-x(text {BiScO}_{3}) (KNN-xBS) ferroelectric ceramics. The KNN-xBS (x = 0.01, 0.02, 0.03, and 0.10) ceramics were synthesized by the typical solid-state route and ECE was examined by an indirect method based on Maxwell’s relations. The maximum value of ECE has obtained 0.61 K at 428 K for 60 kV/cm applied field, and the recoverable energy density has 0.57 J/(text {cm}^{3}) for x = 0.01 ceramics. The obtained positive ECE has a larger value among different lead-free ceramics. The (text {BiScO}_{3}) doped (text {K}_{0.5}) (text {Na}_{0.5}) (text {NbO}_{3}) ceramics have presented enormous potential in solid-state cooling technology for a cleaner environment.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cellulose-based encapsulation for all-printed flexible thermoelectric touch detectors

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14064-4

Joana Figueira, Mariana Peixoto, Cristina Gaspar, Joana Loureiro, Rodrigo Martins, Emanuel Carlos, Luís Pereira

{"title":"Cellulose-based encapsulation for all-printed flexible thermoelectric touch detectors","authors":"Joana Figueira, Mariana Peixoto, Cristina Gaspar, Joana Loureiro, Rodrigo Martins, Emanuel Carlos, Luís Pereira","doi":"10.1007/s10854-024-14064-4","DOIUrl":"10.1007/s10854-024-14064-4","url":null,"abstract":"<div>Printed and flexible electronics have gained considerable scientific attention in recent years, driving the demand for low-energy production techniques, eco-friendly materials and flexible substrates. However, effective encapsulation is essential to protect these devices in harsh environmental conditions. Thus, sustainable encapsulant materials are critical for advancing flexible electronics. In this work, we studied three encapsulant materials—commercial plastic, polyvinyl alcohol and ethyl cellulose—applied to thermoelectric touch sensors printed on paper and fabric substrates. Ethyl cellulose demonstrated promising properties in terms of flexibility, water resistance and transparency, along with a low carbon footprint. Encapsulated substrates with ethyl cellulose exhibited high contact angles (121° on fabric and 116° on paper), indicating robust water repellency. Thermal stability tests showed minimal mass loss (10%) at 315 °C, confirming its temperature resilience. Furthermore, sensors encapsulated with ethyl cellulose retained their electric performance after water submersion for 1 min and withstood 100 bending cycles, maintaining response times below 1 s and signal output around 100 µV. These findings highlight ethyl cellulose as a viable green encapsulant material compatible with large-scale sustainable electronics manufacturing.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-14064-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SnO2 nanosheet with N-doped graphene layer coating as a highly sensitive material to formaldehyde gas at ppb level

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14075-1

Jing Lu, Jingjing Zhu, Yajun Wang, Zijin Fu, Rongrong Wang, Liangliang Feng, Jianfeng Huang

{"title":"SnO2 nanosheet with N-doped graphene layer coating as a highly sensitive material to formaldehyde gas at ppb level","authors":"Jing Lu, Jingjing Zhu, Yajun Wang, Zijin Fu, Rongrong Wang, Liangliang Feng, Jianfeng Huang","doi":"10.1007/s10854-024-14075-1","DOIUrl":"10.1007/s10854-024-14075-1","url":null,"abstract":"<div>The tin dioxide nanosheet coated by N-doped graphene (SnO2@NGO) as a formaldehyde sensing material is prepared by a hydrothermal method. The coating of NGO thin layer on SnO2 forms a porous coating-nanosheet structure composite with a remarkable large heterogeneous interface. It promotes gas adsorption, carrier transport, and the final sensing performances significantly. The as-prepared SnO2@NGO shows a linear response to formaldehyde at ppb level concentration. The response value to 500 ppb formaldehyde is 9.8, which is about 7 times that of ethanol, ammonia and acetone. Such excellent selectivity and sensitivity are attributed to the following aspects: (i) active adsorption of oxygen by (110) oriented SnO2; (ii) selective adsorption of formaldehyde by the porous NGO layer; (iii) catalytic effect on redox reactions between HCHO and O2− by the pyridinic-N structure; (iv) efficient carrier transport through the spacious heterogeneous interfaces. The coating strategy provides a new insight into designing ultra-sensitive heterogeneous materials.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of ceramic matrix composition on microwave absorbing performance and mechanical properties in SiCf/mullite composites

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14068-0

Haijun Pan, Fa Luo, Linhan Jing, Chun-Hai Wang, Zhaowen Ren

{"title":"Effects of ceramic matrix composition on microwave absorbing performance and mechanical properties in SiCf/mullite composites","authors":"Haijun Pan, Fa Luo, Linhan Jing, Chun-Hai Wang, Zhaowen Ren","doi":"10.1007/s10854-024-14068-0","DOIUrl":"10.1007/s10854-024-14068-0","url":null,"abstract":"<div>Ceramic matrix composition is crucial for enhancing flexural strength, fracture toughness, and microwave absorbing properties. This work prepared the SiCf/mullite composites with different Al2O3 contents via a precursor infiltration-pyrolysis process (PIP). The phase composition and structure were investigated according to the XRD patterns and Fourier Transform Infrared (FT-IR) of composites. In addition, the effects of Al2O3 contents on flexural strength, toughness, and microwave absorbing performance were also investigated. With the increase of the Al2O3 contents from 50 wt% (50AC) to 72 wt% (72AC), the flexural strength improved from 210.77 ± 8.15 to 331.02 ± 2.12 MPa, and the fracture modulus from 63.61 ± 3.57 (GPa) to 77.70 ± 1.06 (GPa). In addition, the effective absorption bandwidth (EAB, RL ≤ −10 dB) of 50AC at the thickness of 3.0 mm was 3.89 GHz which covered 93% of the X-band, showing excellent microwave absorption performance.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-14068-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

(1-x)MgTi2O5–xCaTiO3 microwave dielectric composites with near–zero temperature coefficient of resonant frequency

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14083-1

Zuo Yi Li, Lei Li, Xing Yu Chen, Xiao Jian Yan, Xiang Ming Chen

{"title":"(1-x)MgTi2O5–xCaTiO3 microwave dielectric composites with near–zero temperature coefficient of resonant frequency","authors":"Zuo Yi Li, Lei Li, Xing Yu Chen, Xiao Jian Yan, Xiang Ming Chen","doi":"10.1007/s10854-024-14083-1","DOIUrl":"10.1007/s10854-024-14083-1","url":null,"abstract":"<div>MgTiO3 and Mg2TiO4 are important commercial microwave dielectric ceramics, while MgTi2O5 ceramic as the last stable phase in MgO–TiO2 binary phase diagram has not attracted similar attention. In this study, MgTi2O5 ceramics were prepared by solid-state sintering, and the optimal microwave dielectric properties with εr = 18.6, Qf = 53,000 GHz, and τf = − 48.8 ppm/℃ were obtained for the sintering temperature of 1250 °C. CaTiO3 with a large positive τf was further introduced to compensate the large negative τf of MgTi2O5, and the optimal microwave dielectric properties of εr = 22.7, Qf = 39,900 GHz, and τf = 4.9 ppm/℃ were obtained in 0.9MgTi2O5–0.1CaTiO3 composite sintered at 1250 °C. Although the Qf value of the present 0.9MgTi2O5–0.1CaTiO3 composite is lower than that of the commercial MgTiO3–CaTiO3 counterpart with near-zero τf, it is expected to be improved by eliminating the color centers caused by oxygen deficiencies in MgTi2O5. Besides, the 0.9MgTi2O5–0.1CaTiO3 composite has a higher εr and a lower sintering temperature, indicating its potential application prospects in future microwave communications.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring magneto-optical anisotropy on Tb3Al3Ga2O12 single crystal for visible-infrared Faraday isolators

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14093-z

Zhen Zhang, Xianhui Xin, Yuankai Hao, Xianxian Yang, Zhitai Jia, Xutang Tao, Xiuwei Fu

{"title":"Exploring magneto-optical anisotropy on Tb3Al3Ga2O12 single crystal for visible-infrared Faraday isolators","authors":"Zhen Zhang, Xianhui Xin, Yuankai Hao, Xianxian Yang, Zhitai Jia, Xutang Tao, Xiuwei Fu","doi":"10.1007/s10854-024-14093-z","DOIUrl":"10.1007/s10854-024-14093-z","url":null,"abstract":"<div>Tb3Al3Ga2O12 (TAGG) crystal possesses excellent optical and magneto-optical properties and is considered a promising crystal for Faraday isolators. In this work, we report the magneto-optical anisotropy of the TAGG crystal for the first time, which is crucial for the actual processing and usage of the crystal devices. Herein, a high-quality non-cracked TAGG single crystal is grown by the Czochralski method, and it exhibits a high transmittance of more than 80% in the wavelength range of 400–1600 nm. The magneto-optical anisotropy is determined by studying the magneto-optical properties along three different crystal orientations (100), (110), and (111). The results demonstrate that the (111) orientation exhibits superior magneto-optical performance with the largest Verdet constants of 279.4 rad T−1 m−1 at 515 nm, 154.2 rad T−1 m−1 at 650 nm, and 49.5 rad T−1 m−1 at 1064 nm, respectively.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting the structural, electrical properties, and optical features of porous starch/poly(ethylene oxide) reinforced with NiMoO4 nanocrystals

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-20 DOI: 10.1007/s10854-024-14077-z

Tarek I. Alanazi

{"title":"Boosting the structural, electrical properties, and optical features of porous starch/poly(ethylene oxide) reinforced with NiMoO4 nanocrystals","authors":"Tarek I. Alanazi","doi":"10.1007/s10854-024-14077-z","DOIUrl":"10.1007/s10854-024-14077-z","url":null,"abstract":"<div>Synthesizing and characterizing novel flexible polymeric bio-nanocomposites for advanced applications in the medical, optoelectronic, and energy sectors has become an interesting topic of research worldwide. This work reports the influence of nickel molybdenum oxide nanocrystals (NiMoO4 NC) on the structure, electrical features, and optical factors of a starch/polyethylene oxide (St/PEO) blend. The analyses carried out by the transmission electron microscope X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and FTIR techniques displayed that the sol–gel prepared NiMoO4 composed of nanoparticles/nanorods, crystallized in a monoclinic structure with high purity. XRD, FTIR, and scanning electron microscopy, field-emission mode, (FE-SEM) showed that the semi-crystalline and porous structure of the nanocomposites was influenced by the uniform filler distribution. The effect of NiMoO4 NC level on the dielectric permittivity, loss factor, and ac conductivity of St/PEO was studied under heating, and at frequencies up to 7 MHz. Moreover, various optical factors (transmittance in the UV–vis-NIR wavelengths, extinction coefficient, band gap, optical-dielectric loss, and index of refraction (n)) were also evaluated and discussed. The films displayed dual direct/indirect ({text{band gaps }E}_{g}^{op}). The direct (indirect) ({E}_{g}^{op}) narrowed from 4.8 to 4.3 eV (3.9 to 3.0 eV) for the high-energy region. NiMoO4 NC changed the n behavior to a wave-like pattern with a significant increase to 3.5˗5.0. The structural changes, as well as the related dielectric and optical enhancements, make NiMoO4/St/PEO materials ideal candidate semiconductors for high refractive index and energy-storing applications.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PZT-PMN-based high-power piezoelectric ceramics with co-large d33, Qm and Tc parameters

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-19 DOI: 10.1007/s10854-024-14073-3

Shicheng Ding, Wenbin Tang, Xinghua Xu, Yiping Wang, Yong Huang, Guoliang Yuan

{"title":"PZT-PMN-based high-power piezoelectric ceramics with co-large d33, Qm and Tc parameters","authors":"Shicheng Ding, Wenbin Tang, Xinghua Xu, Yiping Wang, Yong Huang, Guoliang Yuan","doi":"10.1007/s10854-024-14073-3","DOIUrl":"10.1007/s10854-024-14073-3","url":null,"abstract":"<div>For high-power piezoelectric ceramics to operate stably under high alternating electric fields, they require co-high values of the piezoelectric coefficient (d33), mechanical quality factor (Qm), and Curie temperature (Tc). Here, 0.04Pb(Mn1/3Nb2/3)O3-0.96Pb(Zr0.505Ti0.495)O3-0.005Fe2O3-0.002Sc2O3 (ceramic 1)has a tetragonal phase near the piezoelectric morphotropic phase boundary, which significantly improved the Qm value of the ceramic while maintaining high d33 and Tc. It exhibits advantages in multi-parameter co-high values, with d33 = 340 pC/N, dielectric loss tanδ = 0.24%, Qm = 2200, electromechanical coupling coefficient (kp) = 0.59, permittivity (εr) = 1450 and Tc = 377 °C. The figure of merit (FOM = Qm × d33) value of ceramic 1 is as high as 748 nC/N at room temperature, surpassing most high-power piezoelectric ceramics. Under an alternating electric field of 40 V/mm at 92 kHz, the ceramic achieves a vibration velocity of 0.4 m/s, which is 3.6 times higher than that of commercial piezoelectric ceramic under the same electric field. These results indicate that the ceramic 1 is highly suitable for advanced high-power piezoelectric applications.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical bandgap tuning in SnO2–MoS2 nanocomposites: manipulating the mass of SnO2 and MoS2 using sonochemical solution mixing

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-19 DOI: 10.1007/s10854-024-14061-7

Chinkhai Ong, Weng Nam Lee, Yee Seng Tan, Patrik Ohberg, Yasuhiko Hayashi, Takeshi Nishikawa, Yuenkiat Yap

{"title":"Optical bandgap tuning in SnO2–MoS2 nanocomposites: manipulating the mass of SnO2 and MoS2 using sonochemical solution mixing","authors":"Chinkhai Ong, Weng Nam Lee, Yee Seng Tan, Patrik Ohberg, Yasuhiko Hayashi, Takeshi Nishikawa, Yuenkiat Yap","doi":"10.1007/s10854-024-14061-7","DOIUrl":"10.1007/s10854-024-14061-7","url":null,"abstract":"<div>This study investigates controlled optical bandgap tuning through precise adjustment of the SnO2 and MoS2 mass in nanocomposites. A sonochemical solution mixing method, coupled with bath sonication, is employed for the preparation of SnO2–MoS2 nanocomposite. This approach allows for comprehensive characterization using UV–Vis FTIR, XRD, EDX, Raman spectroscopies, and FESEM, providing insights into morphology, chemical, and optical properties. Increasing the SnO2 mass leads to a linear decrease in the optical bandgap energy, from 3.0 to 1.7 eV. Similarly, increasing the MoS2 mass also results in a decrease in the optical bandgap energy, with a limitation of around 2.01 eV. This work demonstrates superior control over optical bandgap by manipulating the SnO2 mass compared to MoS2, highlighting the complexities introduced by MoS2 2D nanosheets during sonication. These findings hold significant value for optoelectronic applications, emphasizing enhanced control of optical bandgap through systematic mass manipulation.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-14061-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of ammonium fluoride concentration on the morphological, structural, optical and electrochemical properties of nanoporous WO3 films

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2024-12-19 DOI: 10.1007/s10854-024-14018-w

Farhat M. Ali Salem, Yam Fong Kwong, Mahayatun Dayana Johan Ooi, Mohamed Bououdina

{"title":"Influence of ammonium fluoride concentration on the morphological, structural, optical and electrochemical properties of nanoporous WO3 films","authors":"Farhat M. Ali Salem, Yam Fong Kwong, Mahayatun Dayana Johan Ooi, Mohamed Bououdina","doi":"10.1007/s10854-024-14018-w","DOIUrl":"10.1007/s10854-024-14018-w","url":null,"abstract":"<div>This paper reports the synthesis and characterization of tungsten oxide by anodization method for 1 h using (1 M H2SO4, 1 M Na2SO4) electrolyte solution while varying NH4F concentration. The influence of NH4F concentration on structural, morphological, optical, and photocatalytic properties is examined. Scanning electron microscopy images show the formation of a thin layer with porous nanostructure attributed to the dissolution of anodic oxide by H+ and F− ions in the electrolyte under UV radiation of 365 nm. X-ray diffraction analysis reveals a mixed-phase crystal system of WO3, consisting of both monoclinic and tetragonal phases The crystallite size is found in the range 5.5‒18.2 nm with increasing NH4F concentration. UV–Vis spectroscopy analysis indicates a narrowing in the energy bandgap from 3.06 to 2.35 eV. Cyclic voltammetry manifests a decrease in the anodic peak current density with the rise in the concentration rate of NH4F. These findings extend a better understanding of the influence of NH4F concentration on the structural and electrochemical characteristics of the anodized nanoporous WO3 film as a potential candidate for hydrogen generation by the water-splitting process.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0