Journal of the Australian Ceramic Society最新文献_第6页

Effect of Ce-chemical nature on the structural, thermal, and optical and optoelectronic properties of Ce@Na2B4O7 oxide glasses Ce 化学性质对 Ce@Na2B4O7 氧化物玻璃的结构、热、光学和光电特性的影响

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-06-07 DOI: 10.1007/s41779-024-01040-8

Hosam M. Gomaa, H. A. Saudi, I. S. Yahia, H. Y. Zahran

{"title":"Effect of Ce-chemical nature on the structural, thermal, and optical and optoelectronic properties of Ce@Na2B4O7 oxide glasses","authors":"Hosam M. Gomaa, H. A. Saudi, I. S. Yahia, H. Y. Zahran","doi":"10.1007/s41779-024-01040-8","DOIUrl":"10.1007/s41779-024-01040-8","url":null,"abstract":"<div>This study focuses on how the chemical makeup of the glass' basic components affects the glass' structure and optical characteristics. Four glass samples have been created for this purpose using the chemical formula; 94 mol% Na2B4O7—(6-x) mol% CeO2 – x mol% Ce(NO3)3, where 0 ≤ x ≤ 6. The Ce cations in this formula have two separate chemical sources, CeO2 and Ce(NO3)3, with CeO2 eventually being replaced by Ce(NO3)3. The standard melt-quenching technique was used to prepare the studied glasses. While X-ray direction (XRD), differential scanning calorimetry (DSC), and UV–vis were used for the structural and optical characterizations. XRD patterns revealed the short-range order glass networks for the prepared samples, while DSC thermograms showed that when CeO2 was replaced with Ce(NO3)3, the glass transition temperature (Tg) decreased, causing the glass stability to improve. The optical characterization resulted in the finding that when CeO2 was replaced with Ce(NO3)3, the Urbach's energy increased with a decrease in bandgap energies, which reflects an increase in the glass homogeneity. Finally, the results may imply that Ce(NO3)3-based glasses can be proposed for usage in applications for UV blockers, radiation shielding, light attenuation, and n-type semiconductors.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 4","pages":"1303 - 1313"},"PeriodicalIF":1.8,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141375208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Sol-gel-synthesized bioglass-ceramics: physical, mechanical, and biological properties 溶胶凝胶合成的生物玻璃陶瓷：物理、机械和生物特性

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-06-04 DOI: 10.1007/s41779-024-01012-y

Faezeh Darvishian Haghighi, Neda Sami, Masoud Azizi, Sahar Mollazadeh Beidokhti, Ali Reza Kiani Rashid

{"title":"Sol-gel-synthesized bioglass-ceramics: physical, mechanical, and biological properties","authors":"Faezeh Darvishian Haghighi, Neda Sami, Masoud Azizi, Sahar Mollazadeh Beidokhti, Ali Reza Kiani Rashid","doi":"10.1007/s41779-024-01012-y","DOIUrl":"10.1007/s41779-024-01012-y","url":null,"abstract":"<div>Nowadays, bioglasses have been introduced universally. However, controlling the physical and biological properties of bioglass is complicated. Hence, tailoring their composition and heat-treatment procedures could be beneficial. In the present study, the fluorapatite-containing bioglass-ceramic powders were synthesized via a sol-gel route in two systems, 50SiO2-39CaO-11P2O5 and 64SiO2-28CaO-8P2O5. Furthermore, it is aimed to examine how additives affect the final microstructure by the addition of TiO2 and ZnO to the chemical formula. Also, another effective parameter that was investigated is the heat-treatment temperature. Based on the XRD and FESEM results, the spherulitic morphology of fluorapatite-containing phases in additive-containing samples proved that the presence of TiO2 oxide was more influential than ZnO oxide in controlling the crystallization and growth of the desired phases. FTIR results confirmed that increasing the heat-treatment temperature from 700 ℃ to 1100 ℃ caused more intense Si-O and P-O functional groups. There was also no cytotoxicity effect in all samples based on the MTT assay results. Based on the mechanical investigation, the presence of ZnO oxide increased the flexural strength of sintered samples up to 60 MPa.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 4","pages":"1085 - 1101"},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141257798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of time and voltage on the morphology of TiO2 films produced by anodization 时间和电压对阳极氧化法制备的二氧化钛薄膜形貌的影响

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-30 DOI: 10.1007/s41779-024-01033-7

Ozan Yılmaz, Faruk Ebeoglugil, Tuncay Dikici, Ramazan Dalmis

{"title":"Effect of time and voltage on the morphology of TiO2 films produced by anodization","authors":"Ozan Yılmaz, Faruk Ebeoglugil, Tuncay Dikici, Ramazan Dalmis","doi":"10.1007/s41779-024-01033-7","DOIUrl":"10.1007/s41779-024-01033-7","url":null,"abstract":"<div>This study investigates the influence of various anodic oxidation parameters on the photocatalytic activities of the nanostructured titanium dioxide (TiO2) films. TiO2 films were prepared by anodic oxidation of titanium substrate using 1 M Na2SO4 / 5 wt. % NH4F electrolyte, and then annealed at 500 °C. Anatase appears in all calcined samples. The anodic oxidation process was performed in two steps at different voltages (5–80 V) and times (15–480 min) to reveal the relationship between the surface morphologies, wettability and photocatalytic properties. The results showed that the voltage and anodization time can play important role in the surface morphology of nanostructured TiO2 films and thus in various properties. While 40 V showed the most efficient photocatalytic degradation among voltage values, 60 min was the most efficient time for photocatalytic degradation efficiency and lowest contact angle. In addition, a pore area fraction of 39.54%, equal diameter of 96.81 nm, and circularity of 66.7% were obtained from image analysis of the 60-min anodized sample. While increasing the voltage and time benefited up to a point in terms of photocatalytic efficiency, changes in morphology had a negative effect after a point. At low voltage and time values, small pore diameters result in low photocatalytic properties. This titania can be readily utilize to meet application expectations in areas such as gas sensors, photocatalysis and photovoltaic cells.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 3","pages":"809 - 822"},"PeriodicalIF":1.8,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-024-01033-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141190542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Synthesis and characterization of BaBiLaNbVO9 for temperature-based sensor application 用于温度传感器的 BaBiLaNbVO9 的合成与表征

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-24 DOI: 10.1007/s41779-024-01028-4

Nitin Kumar, Sudhansu Sekhar Hota, Debasish Panda, R.N.P. Choudhary, Umakant Prasad

{"title":"Synthesis and characterization of BaBiLaNbVO9 for temperature-based sensor application","authors":"Nitin Kumar, Sudhansu Sekhar Hota, Debasish Panda, R.N.P. Choudhary, Umakant Prasad","doi":"10.1007/s41779-024-01028-4","DOIUrl":"10.1007/s41779-024-01028-4","url":null,"abstract":"<div>BaBiLaNbVO9 is a lead-free compound and has been synthesized by solid-state technique. The formation of the compound was confirmed by X-ray diffraction and is found to be crystallized in the monoclinic (space group P 21) crystal system (a = 13.7464± 0.0015 Å, b = 4.0156± 0.0012 Å, c = 12.4946 ± 0.0018 Å, β = 93.48 ± 0.01o). The crystallite size was found to be 52.91 nm. SEM and EDX studies analyzed the morphology, composition, and elemental distribution in the specimen. The average grain size is about 1.0651 μm. Several properties, such as frequency and temperature response resistivity, conductivity, and dielectric behaviours of the compound, have been analyzed. The overlapping large polaron tunnelling (OLPT) and correlated barrier hopping (CBH) models are appropriate for electrical conduction in the compound. The energy band gap (Eg) of the material was 2.40 eV, suitable for optoelectronic devices. Ferroelectric behaviour may be deduced from symmetric and well-shaped P-E hysteresis loops. The impedance study satisfies the negative temperature coefficient of resistance (NTCR) behaviour, which is suitable for thermistor devices and its correlated application.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 3","pages":"917 - 934"},"PeriodicalIF":1.8,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141153566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on the properties of alkali-activated phosphorus slag mortar mixed with granulated blast furnace slag/fly ash 掺有粒化高炉矿渣/粉煤灰的碱活性磷渣砂浆性能研究

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-21 DOI: 10.1007/s41779-024-01038-2

Yannian Zhang, Qi Wu, Daokui Yang, Qingjie Wang, Zhifu Qu, Yugang Zhong

{"title":"Study on the properties of alkali-activated phosphorus slag mortar mixed with granulated blast furnace slag/fly ash","authors":"Yannian Zhang, Qi Wu, Daokui Yang, Qingjie Wang, Zhifu Qu, Yugang Zhong","doi":"10.1007/s41779-024-01038-2","DOIUrl":"10.1007/s41779-024-01038-2","url":null,"abstract":"<div>Alkali-activated materials (AAMs), which are prepared by using various solid wastes as precursors and reacting with alkaline solutions, are gradually applied in the construction industry. However, not all solid waste precursors can exhibit good performance in the preparation of AAMs. To realize the effective utilization of phosphorus slag (PS) solid waste, alkali-activated PS-GBFS-FA (AAPGF) was prepared by using PS and GBFS/FA. Using different contents of GBFS/FA to replace PS, the workability performance, mechanical properties and hydration products of AAPGF were investigated. The incorporation of GBFS/FA improves the fluidity of AAPGF, but leads to slurry flash setting. When containing 30% GBFS/FA, the 28 days compressive strength of AAPGF can reach the highest 72.65 MPa. GBFS/FA increased the number of C-(A)-S-H gels, accompanied by the formation of hydrotalcite gels. In addition, GBFS/FA also transforms AAPGF hydration products from C-S-H gel to C-(N)-A-S-H and N-A-S-H gel with high degree of polymerization, and SiO4 tetrahedron is Q2 unit. GBFS/FA will significantly reduce unhydrated particles, but it will lead to uneven distribution of hydration products and produce large pores. The results of this study can provide reference value for the effective use of PS.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 4","pages":"1281 - 1291"},"PeriodicalIF":1.8,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141117408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 and characterization of alumina-based composites by in-situ combustion synthesis in Al-FeTiO3-B2O3-C alumino-thermic system 在 Al-FeTiO3-B2O3-C 铝热体系中通过原位燃烧合成制备氧化铝基复合材料并确定其特性

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-21 DOI: 10.1007/s41779-024-01036-4

Mousa Hoseinpour, Mahdi Kalantar

{"title":"Fabrication and characterization of alumina-based composites by in-situ combustion synthesis in Al-FeTiO3-B2O3-C alumino-thermic system","authors":"Mousa Hoseinpour, Mahdi Kalantar","doi":"10.1007/s41779-024-01036-4","DOIUrl":"10.1007/s41779-024-01036-4","url":null,"abstract":"<div>In this study, thermal analysis, composition phase, microstructure and physical and mechanical properties of Al2O3-based composites with titanium diboride and carbide reinforcements fabricated by in-situ spark plasma sintering method in Al-FeTiO3-B2O3-C alumino-thermic system have been investigated. This research explores the potential of utilizing Kahnuj (Iran-Kerman) ilmenite concentrate as a replacement for TiO2. The results of the thermal analysis demonstrate that aluminothermic reactions significantly intensify after the melting of aluminum and different compounds of iron aluminides (FeAl, Fe2Al5, and Fe3Al) and titanium diboride (TiB2) and carbide (TiC) are formed. Among the different systems of raw materials (Al-FeTiO3-C, Al-FeTiO3-B2O3, and Al + FeTiO3 + C + B2O3) only for system Al + FeTiO3 + B2O3, the intermetallic compounds of Fe3Al and Fe4Al13 are stable. For heat treatment with higher heating rates, the boron oxide participates more effectively in the aluminothermic reaction and the composition of titanium diboride is more noticeably formed. In the condition of 45 MPa in mechanical pressure, argon gas atmosphere with 3 bar pressure, heating rate of 100 °C/min, temperature of 1400 °C with dwelling time of 4 min (Optimum condition) for in-situ SPS processing of Al-FeTiO3-C system, the composite samples with the highest homogeneity in microstructure, density (4.10 g/cm3), hardness (281HV), bending strength (271.5 MPa) and highest wear resistance (Friction coefficient of 0.3 and 0.003 g of weight loss with 500 m of sliding distance) with optimal phase composition (Fe, Al2O3, TiC,…) was obtained.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 4","pages":"1249 - 1264"},"PeriodicalIF":1.8,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141116887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Bioactive coatings on biopolymer materials: evaluation of mechanical, physical, thermal, and in vitro properties 生物聚合物材料上的生物活性涂层：机械、物理、热和体外特性评估

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-21 DOI: 10.1007/s41779-024-01037-3

Kerim Emre Öksüz

{"title":"Bioactive coatings on biopolymer materials: evaluation of mechanical, physical, thermal, and in vitro properties","authors":"Kerim Emre Öksüz","doi":"10.1007/s41779-024-01037-3","DOIUrl":"10.1007/s41779-024-01037-3","url":null,"abstract":"<div>The aim of this study was to develop and characterize coatings of bioglass nanoparticles (BGNs) on biopolymer (poly [glycolide-co-L-lactide], (PGLA)) surgical sutures, and to investigate the effects of these coatings on the performance of the sutures as they slid through a skin substitute. Melt-derived BGNs were used to coat resorbable PGLA biopolymers, providing them with bioactivity, biocompatibility, and improved physical and mechanical properties. The structural, thermal, and physical properties of the coated and uncoated biopolymers were analyzed using Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FE-SEM) and Energy-Dispersive X-ray Spectroscopy (EDXS). The dissolution profiles and bioactivity of the BGNs-coated PGLA biopolymers were assessed through Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Tensile strength tests were conducted on the biopolymers before and after immersion in simulated body fluid to evaluate the impact of the BGNs coating on the degradation of PGLA biopolymers. Incorporating BGNs into PGLA resulted in improved tensile strength properties. The study also found that increasing the BGNs ions content facilitated the formation of a hydroxycarbonate apatite (HCA) layer in Dulbecco’s Modified Eagle Medium and medium with L-glutamine and sodium bicarbonate solutions. In vitro bioactivity tests demonstrated that the coated suture biopolymers exhibited enhanced attachment, migration, and proliferation of fibroblasts, indicating favorable biocompatibility of the biomaterial for clinical applications.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 4","pages":"1265 - 1280"},"PeriodicalIF":1.8,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-024-01037-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141117994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effects of volume fraction of short-cut quartz fibers on mechanical and thermal properties of SiO2f/SiO2 composites 短切石英纤维体积分数对 SiO2f/SiO2 复合材料机械性能和热性能的影响

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-16 DOI: 10.1007/s41779-024-01034-6

Donghai Ding, Wangjiao Ding, Jiexin Jiao, Shaonan Liu, Endong Jin, Guoqing Xiao, Li Zhang, Changkun Lei, Chunzhuo Feng, Yanjun Li

{"title":"Effects of volume fraction of short-cut quartz fibers on mechanical and thermal properties of SiO2f/SiO2 composites","authors":"Donghai Ding, Wangjiao Ding, Jiexin Jiao, Shaonan Liu, Endong Jin, Guoqing Xiao, Li Zhang, Changkun Lei, Chunzhuo Feng, Yanjun Li","doi":"10.1007/s41779-024-01034-6","DOIUrl":"10.1007/s41779-024-01034-6","url":null,"abstract":"<div>SiO2f/SiO2 composites were prepared by compression molding and sintering using short-cut quartz fibers as reinforcement. The effects of fiber volume fraction (15%∼35%) on bulk density, apparent porosity, and mechanical and thermal properties of the composites were investigated. The results indicated that the samples with 25% fiber volume fraction had the best comprehensive performance, with an apparent porosity and compressive strength of 36% and 46.3 MPa, respectively. The flexural strength of the samples was 13.9 MPa, which represented a 90% increase compared to the samples without fibers. It was attributed to the occurrence of fiber debonding and fiber pull-out in the porous matrix. Meanwhile, the residual strength ratio of the samples after 20 thermal shocks was 74.8%. In addition, the average coefficient of thermal expansion was 0.95 × 10− 6/℃ at 300 ℃∼700 ℃ and the thermal conductivity was 0.388 W·m− 1·K− 1 at 800 °C. This approach can satisfy the requirements of low cost, fast preparation of SiO2f/SiO2 composites, which offers the prospect of its application in the integration of load-bearing and thermal insulation.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 3","pages":"689 - 699"},"PeriodicalIF":1.8,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-024-01034-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140967231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Microstructure, mechanical and neutron shielding properties of aluminum borate ceramics obtained from alumina and boric acid 从氧化铝和硼酸中获得的硼酸铝陶瓷的微观结构、机械性能和中子屏蔽性能

IF 1.8 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-16 DOI: 10.1007/s41779-024-01031-9

Dong Lao, Yan Zhang, Lingfeng Huang, Xuwen Liang, Wenbao Jia

{"title":"Microstructure, mechanical and neutron shielding properties of aluminum borate ceramics obtained from alumina and boric acid","authors":"Dong Lao, Yan Zhang, Lingfeng Huang, Xuwen Liang, Wenbao Jia","doi":"10.1007/s41779-024-01031-9","DOIUrl":"10.1007/s41779-024-01031-9","url":null,"abstract":"<div>In this study, a series of aluminum borate ceramics (ABCs) with needle-like whiskers were obtained using a low-cost, solid-state, pressureless sintering ceramic route, without any additives during the preparation process. The effects of different alumina/boric acid molar ratios and sintering temperatures on the phase composition, microstructure, mechanical properties, specific surface area, pore size distribution, and sub-cadmium neutron shielding properties of ABCs were studied using orthogonal experiments. It was observed that pure phase aluminum borate (Al18B4O33) ceramics could be obtained at 1100 ℃, forming a mass of needle-like whiskers. The whiskers’ aspect ratio, fracture work, specific surface area, and pore size distribution of ABCs are maximized when ABCs are sintered at 1100 ℃ with 9:6 alumina/boric acid molar ratio. In this condition, ABCs (0.5 cm) can shield 70% of sub-cadmium neutrons (E<0.4 eV). These findings demonstrate the great potential of aluminum borate ceramics for neutron shielding applications.</div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 3","pages":"905 - 915"},"PeriodicalIF":1.8,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140970459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Development of Al2O3-supported nanobimetallic Co-La-B catalyst for boosting hydrogen release via sodium borohydride hydrolysis 开发 Al2O3 支持的纳米双金属 Co-La-B 催化剂，通过硼氢化钠水解促进氢气释放

IF 1.9 4区材料科学

Journal of the Australian Ceramic Society Pub Date : 2024-05-14 DOI: 10.1007/s41779-024-01035-5

M. Salih Keskin, Sabit Horoz, Ömer Şahin, Sinan Kutluay

{"title":"Development of Al2O3-supported nanobimetallic Co-La-B catalyst for boosting hydrogen release via sodium borohydride hydrolysis","authors":"M. Salih Keskin, Sabit Horoz, Ömer Şahin, Sinan Kutluay","doi":"10.1007/s41779-024-01035-5","DOIUrl":"https://doi.org/10.1007/s41779-024-01035-5","url":null,"abstract":"This study introduces the novel Al2O3-supported nanobimetallic Co-La-B (Al2O3@Co-La-B) catalyst, specifically designed to enhance hydrogen production via sodium borohydride hydrolysis, marking its first application in hydrogen generation. Characterized by X-ray diffraction, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller analysis, and scanning electron microscopy, the catalyst exhibits a porous, homogeneous cubic structure which significantly contributes to its high catalytic efficiency. It demonstrated remarkable hydrogen generation rates of up to 6057.72 mLH2 min−1 gcat−1 at 30 °C and maintained 91.63% catalytic activity over multiple cycles, with a notable increase to 8661.94 mLH2 min−1 gcat−1 at 60 °C. Kinetic studies, utilizing nth-order and Langmuir–Hinshelwood models, indicated activation energies of 51.38 kJ mol−1 and 49.33 kJ mol−1, respectively, showcasing the catalyst's potential as a sustainable solution for hydrogen production in various industrial applications.","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"2016 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140942562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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