Journal of Porous Materials最新文献_第3页

Effect of cerium doping to improve the optical and electrical properties of zinc oxide nano structured thin films prepared by spray pyrolysis for transparent conductive oxides applications 掺铈对改善喷雾热解法制备的透明导电氧化物用氧化锌纳米结构薄膜的光学和电学特性的影响

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-22 DOI: 10.1007/s10934-024-01717-2

Nimalan T, Rigana Begam M

{"title":"Effect of cerium doping to improve the optical and electrical properties of zinc oxide nano structured thin films prepared by spray pyrolysis for transparent conductive oxides applications","authors":"Nimalan T, Rigana Begam M","doi":"10.1007/s10934-024-01717-2","DOIUrl":"10.1007/s10934-024-01717-2","url":null,"abstract":"<div><p>Using the spray pyrolysis process, undoped and cerium-doped zinc oxide thin films were prepared at 400 °C on a completely cleaned glass substrate with various doping concentrations of Ce (2, 4, 6, and 8 at%). Optical, electrical, structural, surface morphology, surface roughness, chemical composition, and photoluminescence investigations have been performed on these films. According to structural analysis via X-ray diffraction (XRD), the pure and Ce doped ZnO thin films were polycrystalline with a hexagonal wurtzite structure and a (002) plane orientation. The ZnO thin film doped with 6 at% Ce has a minimum of 31.72 nm-sized crystallites. According to the SEM images, the surface morphology of the deposited thin films is porous and results in a uniform distribution of nanoscale grains, which is beneficial for solar applications. The particle size and surface roughness of the produced films decreased with increasing Ce doping, according to the AFM findings. Optical experiments show that all the produced films are transparent in the visible region, and that the transmission is high in 92% for 6 at% of Ce doped ZnO sample, it is appropriate for use in optoelectronic devices. The optical band gap decreases 3.56 eV to 3.11 eV with increasing Ce doping. The PL investigations revealed that the maximum intensity of the UV emission band was 6 at% Ce, indicating an improvement in crystallinity. Electrical studies have shown that with increasing hall mobility, the carrier concentration, conductivity, and resistivity decrease. The lowest electrical resistivity, and highest electrical conductivity for the 6 at% Ce-ZnO sample are 1.21 × 10<sup>− 3</sup> Ω cm, and 825.62 Ω<sup>−1</sup> cm<sup>− 1</sup>, respectively. These findings indicate that Ce-doped ZnO is a good material for use in transparent conductive oxides applications.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"549 - 562"},"PeriodicalIF":2.5,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793250","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

Thermoresponsive [(PLA)-co-(Car)] based frustum-shaped capsules with extended porosity for biosensing and biomedical applications 热响应[(PLA)-co-(Car)]基锥状胶囊，具有扩展孔隙度，用于生物传感和生物医学应用

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-20 DOI: 10.1007/s10934-024-01681-x

Chander Amgoth Pawar, David Xu Luo, Divya Rokkala, Raju Bura, Gundeti Bhagyalaxmi, Rampilla Sudha Rani, Krishna Veni Mannam, Kothamasu Suresh Babu

{"title":"Thermoresponsive [(PLA)-co-(Car)] based frustum-shaped capsules with extended porosity for biosensing and biomedical applications","authors":"Chander Amgoth Pawar, David Xu Luo, Divya Rokkala, Raju Bura, Gundeti Bhagyalaxmi, Rampilla Sudha Rani, Krishna Veni Mannam, Kothamasu Suresh Babu","doi":"10.1007/s10934-024-01681-x","DOIUrl":"10.1007/s10934-024-01681-x","url":null,"abstract":"<div><p>We present, a facile method for the synthesis of block co-polymer (BCP) of [(PLA)-<i>b</i>-(Car)], (PLA-Poly Lactic acid and Car-Carbazole). BCP results in the design and development of cone and ice-cream cup-shaped frustums with nanoscale porosity for bio-sensing and drug delivery applications. [(PLA)-<i>b</i>-(Car)] was conjugated through condensation polymerization between amine proton and hydroxyl groups of PLA and Car. Thermoplastic PLA is responsible for desired size, shape, and porosity over the surface. The size, shape, and morphology of the [(PLA)-<i>b</i>-(Car)] are tunable based on suitable solvents and thermal treatment. Interestingly, design of nanoporous hollow (half-broken coconut type) capsules has been carried out without using any precursors and surfactants. Synthesis of [(PLA)-<i>b</i>-(Car)] has been confirmed through the Fourier transform infrared (FTIR), nuclear magnetic resonance (<sup>1</sup>H NMR). However, the morphology and surface properties of capsules were confirmed through field emission scanning electron microscopy (FE-SEM), Bruner Emmett Teller (BET), and atomic force microscopy (AFM) characterizations. The capsule size ranges from ~ 200 nm to 1 μm (in diameter) and porosity scales from ~ 60 to 80 nm. The hollow and porous surface of the capsules with biosensing and drug delivery applications can be considered as a unique and novel characteristic property of our invention. This kind of novel cone and ice cream cup-shaped hollow frustums can be used as a stimuli-responsive catalytic activity through the fluorescence measurement of cysteine and gold nanoparticle [(Cys)-(Au<sup>+</sup>)] for enhanced payload and biomedical applications.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"525 - 537"},"PeriodicalIF":2.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793247","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

Homogeneously dispersed Fe and N sites in a porous carbon framework for persulfate activation in tetracycline hydrochloride degradation 多孔碳框架中均匀分散的铁和氮位点在盐酸四环素降解过程中的过硫酸盐活化作用

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-20 DOI: 10.1007/s10934-024-01714-5

Lihan Ren, Zhoutong Liu, Kang Xiong, De Li, Xiuxia Zhang

{"title":"Homogeneously dispersed Fe and N sites in a porous carbon framework for persulfate activation in tetracycline hydrochloride degradation","authors":"Lihan Ren, Zhoutong Liu, Kang Xiong, De Li, Xiuxia Zhang","doi":"10.1007/s10934-024-01714-5","DOIUrl":"10.1007/s10934-024-01714-5","url":null,"abstract":"<div><p>Fe/N co-doped carbon material serves as a highly efficient catalyst for mineralizing of organic pollutants. In this study, Fe/N-doped porous carbon catalyst (FeNC-PC) was prepared by an economical and facile method using gelatin hydrogel as a template. The FeNC-PC catalyst was utilized to activate PMS and degrade tetracycline hydrochloride (TC). In the characterization of the FeNC-PC catalyst, Fe and N were homogenously distributed across the surfaces of the porous structure carbon. The FeNC-PC/PMS system exhibited excellent TC removal efficiency, achieving a 92.61% removal efficiency with a low catalyst dosage (0.15 g/L). It also demonstrated stable TC removal efficiency across a broad pH spectrum (3–9) and various anionic interferences (5–50 mM). Furthermore, <sup>1</sup>O<sub>2</sub> and O<sub>2</sub>·<sup>−</sup> were the main active species in the system. The degradation mechanical analysis suggested that Fe active sites, especially Fe<sup>2+</sup>, were crucial for accelerating the catalytic process. Pyridinic nitrogen and graphitic nitrogen also contribute to the high catalytic activity. The degradation pathways of TC were suggested through the use of LC–MS. As anticipated by quantitative structure–activity relationship research, the toxicity of TC degradation products was effectively mitigated. This study provided new insights for the synthesis of a more promising Fe/N co-doped catalyst.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"507 - 523"},"PeriodicalIF":2.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793245","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

Assessing the effects of boron-doped biphasic calcium phosphate on the characteristics of chitosan-based composite foams 评估掺硼双相磷酸钙对壳聚糖基复合泡沫特性的影响

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-19 DOI: 10.1007/s10934-024-01709-2

Nurcan Acar, Büşra Mutlu, Hatice Kübra Akben, Şeyma Duman

{"title":"Assessing the effects of boron-doped biphasic calcium phosphate on the characteristics of chitosan-based composite foams","authors":"Nurcan Acar, Büşra Mutlu, Hatice Kübra Akben, Şeyma Duman","doi":"10.1007/s10934-024-01709-2","DOIUrl":"10.1007/s10934-024-01709-2","url":null,"abstract":"<div><p>In this study, composite foams containing chitosan (CHI) and boron doped-biphasic calcium phosphate (BCP) were developed using freeze-drying method. The quantities of BCP incorporated into the CHI matrix were introduced into the foams at three different ratios: 25 wt%, 50 wt%, and 75 wt%. The objective of this study was to investigate the microstructure, swelling, mechanical, and biological properties of boron-doped BCP/CHI-based composites. Scanning electron microscopy (SEM) micrographs revealed that all of the composites exhibited open and interconnected pore morphologies. The FTIR spectra demonstrated that boron doping interacts with the hydroxyl and phosphate groups in the CHI/BCP composites, which is evidenced by changes in peak intensities. It was found that low amounts of boron positively affected the compressive strength and in vitro cytotoxicity of the composites. Following simulated body fluid treatment, the boron-doped BCP/CHI composites exhibited robust apatite layer formation. These results indicated that the composite foams with modified physical and mechanical characteristics show considerable promise for use as composite materials in biomedical applications, including bone scaffolds or wound dressings.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"485 - 496"},"PeriodicalIF":2.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793188","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

Green synthesis of graphene aerogel and its application in oil adsorption and phase change material 石墨烯气凝胶的绿色合成及其在石油吸附和相变材料中的应用

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-19 DOI: 10.1007/s10934-024-01706-5

Qi-Xian Zhang, Jian-Xin Tu, Feng-Hua Li, Xiao-Yu Zhou, Yu-Yan Sun

引用次数: 0

Pt-xCe nanoparticles confined within HZSM-5 for increasing the selectivity of light olefins in iso-butane cracking 限制在HZSM-5内的Pt-xCe纳米颗粒用于提高异丁烷裂化中轻烯烃的选择性

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-19 DOI: 10.1007/s10934-024-01683-9

Jiaqi Liu, Li Ma, Hongdan Zhang, Ying Zhao, Peng Cheng, Zhen Zhao

引用次数: 0

Breaking barriers in electrocatalysis: unleashing the power of highly efficient Mn/CoS@S-g-C3N4 nanocomposite for electrocatalytic water splitting and superior H2 production 打破电催化障碍：释放高效 Mn/CoS@S-g-C3N4 纳米复合材料的能量，实现电催化水分离和卓越的 H2 生产

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-18 DOI: 10.1007/s10934-024-01715-4

Sanam Shafique, Hafiz Dawood Khalid, Mohsin Javed, Sana Mansoor, Misbah Umar, Lubna Ghani, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Abd-ElAziem Farouk, Salman Aloufi, Mohammed M. Althaqafi

{"title":"Breaking barriers in electrocatalysis: unleashing the power of highly efficient Mn/CoS@S-g-C3N4 nanocomposite for electrocatalytic water splitting and superior H2 production","authors":"Sanam Shafique, Hafiz Dawood Khalid, Mohsin Javed, Sana Mansoor, Misbah Umar, Lubna Ghani, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Abd-ElAziem Farouk, Salman Aloufi, Mohammed M. Althaqafi","doi":"10.1007/s10934-024-01715-4","DOIUrl":"10.1007/s10934-024-01715-4","url":null,"abstract":"<div><p>The growing need for sustainable energy has led to a great deal of interest in creating effective and reasonably priced non-precious electrocatalysts as substitutes for precious metal-based electrocatalysts, which are expensive and frequently show poor long-term stability under extreme reaction conditions, making them less useful for sustainable energy solutions. In this study, we introduce Mn/CoS@S-g-C₃N₄, a novel electrocatalyst composed of manganese-doped cobalt sulfide integrated with sulfur-doped graphitic carbon nitride (S-g-C₃N₄), synthesized through a simple co-precipitation method. The synergy between Mn and CoS within this composite provides an optimized electronic structure, enhancing the transfer of electrons and presence of S-g-C₃N₄ serves as both a stabilizing matrix and a conductive support, exposing more active sites which enhances both performance and durability. This Mn/CoS@S-g-C₃N₄ catalyst demonstrated low overpotentials of 306 mV for OER and 404 mV for HER at a current density of 10 mA/cm² in 1 M KOH solution, alongside favourable Tafel slopes of 63.72 mV/dec for OER and 73.22 mV/dec for HER. Additionally, the use of earth-abundant and low-cost elements (Mn and Co) makes Mn/CoS@S-g-C₃N₄ a highly economical choice, addressing both performance and cost-effectiveness in water splitting applications.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"455 - 471"},"PeriodicalIF":2.5,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793146","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

Origin of selectivity in surface functionalized vinylpyridine mesoporous silica nanocomposites (VP/SBA) for Henry reaction 用于亨利反应的表面功能化乙烯基吡啶介孔二氧化硅纳米复合材料（VP/SBA）的选择性起源

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-17 DOI: 10.1007/s10934-024-01708-3

Amit Dubey

引用次数: 0

Temperature evolution of structure and spatial organization of potassium nitrate embedded in mesoporous glasses 介孔玻璃中硝酸钾包埋结构和空间组织的温度演化

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-16 DOI: 10.1007/s10934-024-01712-7

Polina Vanina, Aleksandr Naberezhnov, Olga Alekseeva, Yulia Gorshkova, Evgenii Lukin, Anna Sysoeva

{"title":"Temperature evolution of structure and spatial organization of potassium nitrate embedded in mesoporous glasses","authors":"Polina Vanina, Aleksandr Naberezhnov, Olga Alekseeva, Yulia Gorshkova, Evgenii Lukin, Anna Sysoeva","doi":"10.1007/s10934-024-01712-7","DOIUrl":"10.1007/s10934-024-01712-7","url":null,"abstract":"<div><p>The temperature evolution of spatial organization and crystal structure of nanocomposite materials (NCM) based on porous glass with potassium nitrate (KNO<sub>3</sub>) introduced from a saturated aqueous solution are studied using small-angle X-ray scattering and neutron diffraction methods on heating and cooling in the temperature range of 300–450 K. It is shown that the ferroelectric γ- phase in this NCM becomes predominant both upon heating and upon cooling. The phase diagram of potassium nitrate in NCM on cooling is established. The average size of coherent scattering region for the γ-phase is determined (< <i>L</i> > ∼ 100 Å), and it is practically independent of temperature. From the treatment of small- angle X-ray scattering data, the temperature dependence of the radius of gyration <i>R</i><sub><i>g</i></sub> is obtained. The average <i>R</i><sub><i>g</i></sub> value is 270(20) Å and does not depend on temperature on heating and cooling in the range RT – 450 K. On a spatial scale from 20 to 200 Å, potassium nitrate embedded in mesoporous glasses forms a developed surface fractal characterized by a Q<sup>-α</sup> scattering law with α ∼ 3.52 in small-angle X-ray scattering. It is found that a significant part of potassium nitrate in the nanocomposite is in the amorphous phase.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"425 - 436"},"PeriodicalIF":2.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793141","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

SBA-15-Zn/Cu catalyst with enhanced activity for the synthesis of biodiesel from waste cooking oil 具有更高活性的 SBA-15-Zn/Cu 催化剂用于利用废弃食用油合成生物柴油

IF 2.5 4区材料科学

Journal of Porous Materials Pub Date : 2024-11-16 DOI: 10.1007/s10934-024-01713-6

Zeel Jadav, Rajeshvari Samatbhai Karmur, Narendra Nath Ghosh, Manthan Panchal, Divya Jadav

{"title":"SBA-15-Zn/Cu catalyst with enhanced activity for the synthesis of biodiesel from waste cooking oil","authors":"Zeel Jadav, Rajeshvari Samatbhai Karmur, Narendra Nath Ghosh, Manthan Panchal, Divya Jadav","doi":"10.1007/s10934-024-01713-6","DOIUrl":"10.1007/s10934-024-01713-6","url":null,"abstract":"<div><p>In response to the global push for environmentally friendly technologies and sustainable practices, we have developed an advanced SBA-15-Zn/Cu catalyst that significantly enhances biodiesel production from waste cooking oil. SBA-15, a mesoporous silica, was first functionalized with organic amine and then treated with zinc and copper using a novel and cost-effective modification technique. This approach preserves the structural integrity of SBA-15 while enhancing its catalytic properties. Comprehensive characterization techniques, including powder X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDAX), Brunauer-Emmett-Teller (BET) surface area analysis, Barrett-Joyner-Halenda (BJH) pore size distribution, transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FT-IR), confirmed the successful incorporation of zinc (Zn) and copper (Cu), thereby validating the structural stability of the catalyst. The SBA-15-Zn/Cu catalyst exhibits superior performance in the transesterification reaction, crucial for biodiesel synthesis, achieving 84% waste cooking oil conversion and 61% biofuel yields through various optimization techniques. This innovated catalyst not only improves biodiesel production efficiency but also aligns with sustainable practices, making it both industry and environment friendly via its significant reusable capacities up to 5 consecutive cycles.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"32 2","pages":"437 - 446"},"PeriodicalIF":2.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793142","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