{"title":"High performance humidity sensor based on 3-D mesoporous SnO2 derived via nanocasting technique","authors":"Priya Malik, Surender Duhan","doi":"10.1007/s10934-024-01671-z","DOIUrl":"10.1007/s10934-024-01671-z","url":null,"abstract":"<div><p>This research explores humidity sensing of 3-D mesoporous SnO<sub>2</sub>, presenting a novel approach for addressing the growing demand for advanced nanomaterials in environmental monitoring and remediation. We examined the variations in electrical resistance of mesoporous SnO<sub>2</sub> in response to different humidity levels. Mesoporous SnO<sub>2</sub> was made using MCM-48 as a hard template by nanocasting method and analysed using suitable techniques. The finding indicates the successful replication of the cubic mesoporous structure of MCM-48 using SnO<sub>2</sub>. The SnO<sub>2</sub> replica maintains the unique three-dimensional cubic arrangement and the high specific surface area characteristic of MCM-48, with a measured surface area of 823.45 m²/g. Mesoporous SnO<sub>2</sub> humidity sensors exhibit remarkable sensitivity (1180.229 Ω/RH%) attributed to the altered resistance under variety of humidity conditions, which improves the accuracy of moisture measurement. Notably, the sensor shows a linear declination of resistance towards mid-range of relative humidity, indicating high sensitivity. The sensor exhibits a significant resistance shift of 4.5 orders, with a rapid response time of 8.2s and a recovery time of 9.5s. This study emphasizes the versatility of mesoporous SnO<sub>2</sub> and highlights its potential to address current challenges in humidity sensing.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2261 - 2274"},"PeriodicalIF":2.5,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946752","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}
{"title":"Itaconic acid modified carboxylic-acid functionalized (002) faceted monoclinic WO3 nanorods for electrochemical hydrogen evolution reaction","authors":"Angelin Abraham, Abhishek T.K., M. Junaid Bushiri","doi":"10.1007/s10934-024-01672-y","DOIUrl":"10.1007/s10934-024-01672-y","url":null,"abstract":"<div><p>Design of strategies to modify the hydrogen evolution activity of electrocatalysts is vital for the commercial implementation of hydrogen production. Herein, we explore the surface modification of monoclinic WO<sub>3</sub> using itaconic acid (ITA) ligand via a facile hydrothermal synthesis route. Comprehensive XRD, HRTEM, FTIR, and Raman analyses confirmed the formation of (002) oriented monoclinic WO<sub>3</sub> and the successful incorporation of ITA coating on the WO<sub>3</sub> samples. The FESEM images illustrated the randomly coated ITA particles on the smooth nanorods of <i>m-</i>WO<sub>3</sub> nanorods. The ITA-coated <i>m-</i>WO<sub>3</sub> demonstrated an overpotential of 267 mV at 10 mA/cm<sup>2</sup> current density and exhibited a lower Tafel slope and charge transfer resistance in an acidic electrolyte medium. The carboxylic groups of itaconic acid promote proton transfer, which, along with the highly reactive (002) dominant facets of WO<sub>3</sub>, synergistically enhanced the HER activity. The (002) oriented WO<sub>3</sub> sample with the highest mass loading of itaconic acid (0.3 M) resulted in a tenfold increase in surface area, thereby enhancing the accessible active sites. The enhanced porosity and proton transfer properties of the itaconic acid on integration with WO<sub>3</sub> improved their potential as an HER electrocatalyst.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2241 - 2249"},"PeriodicalIF":2.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969668","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}
R. Arun, Gopika Jagannivasan, M. Salva, M. P. Athira, Suja Haridas
{"title":"Phosphotungstic acid modified sulphonic acid functionalised SBA-15: exploring the synergistic effect for thermal and light assisted synthesis of bis(indolyl)methanes","authors":"R. Arun, Gopika Jagannivasan, M. Salva, M. P. Athira, Suja Haridas","doi":"10.1007/s10934-024-01674-w","DOIUrl":"10.1007/s10934-024-01674-w","url":null,"abstract":"<div><p>Sulphonic acid functionalized mesoporous SBA-15 (SSA) was synthesized by a one-pot hydrothermal method using P123 as the surfactant in acidic media. The basic framework of the SSA material was assembled through the simultaneous hydrolysis and co-condensation of tetraethylorthosilicate (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTMS) and in situ oxidation of the thiol moieties to sulfonic acid functionalities aided by H<sub>2</sub>O<sub>2</sub>. Phosphotungstic acid (HPW) was incorporated into the SSA matrix via a simple wet impregnation. Successful immobilization of HPW over SSA without disrupting the mesoporous framework could be established by detailed spectroscopic and microscopic characterization. The potential of HPW/SSA systems in catalyzing the formation of bis(indolyl)methanes under ambient conditions is explored. The remarkable performance under light-assisted conditions and a comparative evaluation with conventional thermal synthesis are demonstrated. The novel protocol offers an excellent yield of BIMs in an aqueous medium in a short reaction time, eliminating the need for organic solvents and complex work-up procedures. Sustainable performance upon recycling and broad substrate scope validate the versatility of the catalyst. This present protocol thus provides an operationally simple, scalable, and versatile method for synthesizing BIMs.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2251 - 2260"},"PeriodicalIF":2.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946755","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}
{"title":"Magnetic nanoparticles modified with layered double hydroxide (Fe3O4/C/CoFe-LDH) as an extremely effective catalyst in the construction of polyhydroquinolines","authors":"Maryam Gani, Zahra Rafiee","doi":"10.1007/s10934-024-01660-2","DOIUrl":"10.1007/s10934-024-01660-2","url":null,"abstract":"<div><p>In this research, a modified magnetic nanocomposite based on layered double hydroxide (Fe<sub>3</sub>O<sub>4</sub>/C/CoFe-LDH) was synthesized through co-precipitation and thermal processes. Modification of the magnetic nanoparticles was carried out by applying a carbon coating. After the surface modification of these nanoparticles, LDH was immobilized on the surface of Fe<sub>3</sub>O<sub>4</sub>/C. To synthesize CoFe-LDH, a co-precipitation process was performed using cobalt (II) nitrate and iron (III) nitrate. The synthesized nanocomposite was characterized by FT-IR, XRD, SEM, EDS, STA, TEM, VSM and BET. After identifying of Fe<sub>3</sub>O<sub>4</sub>/C/CoFe-LDH, its catalytic activity in the Hantzsch reaction was evaluated. The investigations exhibited that in the presence of the designed catalyst, the expected products can be produced with a high yield in a very short time. In addition, the recyclability and reusability of the prepared nanocomposite were evaluated. The results of these investigations show that after four cycles, the recycled catalyst still maintains its activity and only causes a slight decrease in the reaction efficiency.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2229 - 2240"},"PeriodicalIF":2.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10934-024-01660-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946753","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}
{"title":"An adhesion-printing method to coat platelike MFI seeds for the fabrication of tubular MFI zeolite membranes","authors":"Haoyi Zhang, Yi Li, Yi Xie, Jiao Chen, Qiang Xiao","doi":"10.1007/s10934-024-01669-7","DOIUrl":"10.1007/s10934-024-01669-7","url":null,"abstract":"<div><p>Coating crystal seeds on rough supports with curvature has been a challenge for fabricating zeolite membranes. Here, an adhesion-printing method has been developed to coat platelike MFI crystals on an Al<sub>2</sub>O<sub>3</sub> tubular support to prepare MFI zeolite membranes. In this method, a macroporous Al<sub>2</sub>O<sub>3</sub> tubular support is firstly enclosed with pressure-sensitive adhesive (PSA). Then a beforehand-prepared platelike MFI crystal layer is adhesion-printed on the PSA coated Al<sub>2</sub>O<sub>3</sub> tubular support. An MFI seed layer on the macroporous tubular support is successfully obtained after removing the pressure-sensitive adhesive by calcination. Finally, highly (<i>h0h</i>)-oriented, dense and continuous silicalite-1 membranes are fabricated after a hydrothermal secondary growth in a zeolitic synthesis system, confirmed by XRD and SEM techniques. SEM observations evaluate the effect of TPAOH amount, crystallization temperature and time on the integrity and thickness of the zeolite membranes. Binary separation of butane isomers at an ambient temperature has been performed on the prepared silicalite-1 membranes, achieving a separation factor of 31.7 for an equimolar <i>n</i>-butane /<i>i</i>-butane mixture at a n-butane permeance of 6.03 × 10<sup>− 9</sup> mol·m<sup>− 2</sup>·s<sup>− 1</sup>·Pa<sup>− 1</sup>.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2219 - 2227"},"PeriodicalIF":2.5,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946754","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}
Fatma Ezzahra Haj Mouhamed, Islem Chaari, Amal Andolsi
{"title":"Synthesis, characterization, and valorization of Fe3O4/AC nanocomposite for adsorptive removal of crystal violet (CV) from aqueous solution","authors":"Fatma Ezzahra Haj Mouhamed, Islem Chaari, Amal Andolsi","doi":"10.1007/s10934-024-01621-9","DOIUrl":"10.1007/s10934-024-01621-9","url":null,"abstract":"<div><p>Activated carbon prepared from sawdust, magnetized by magnetite nanoparticles, was used for the adsorption of crystal violet dye (CV) from an aqueous solution. The nanocomposite Fe<sub>3</sub>O<sub>4</sub>/AC was characterized by means of XRD, FTIR, SEM, and BET analyses, along with size distribution and zeta potential assessments. The pH<sub>PZC</sub> and BET surface area of Fe<sub>3</sub>O<sub>4</sub>/AC were 6.05 and 160 m<sup>2</sup>/g, respectively. The study identified the optimum pH condition as pH 9.0, with a maximum removal efficiency of 100%. Kinetic studies were conducted, and the data fitted well with the pseudo-second order equation. The synthesized Fe<sub>3</sub>O<sub>4</sub>/AC exhibits a maximum uptake capacity of 76.0 mg/g. Overall, this nanocomposite provides an effective type of adsorbent for removing CV dye. Its primary advantage lies in its simple synthesis compared to other magnetic materials, along with its economic viability, rapid preparation, and environmental friendliness.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2205 - 2217"},"PeriodicalIF":2.5,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969663","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}
{"title":"MOF-based prodrug entrapped in carboxymethyl cellulose and alginate hydrogel: A drug delivery platform","authors":"Arezoo Rostami Ahangarkolaee, Azin Binaeian, Alireza Hoseinpour Kasgari, Peiman Valipour, Ehsan Binaeian","doi":"10.1007/s10934-024-01667-9","DOIUrl":"10.1007/s10934-024-01667-9","url":null,"abstract":"<div><p>In this study, a metal-organic framework (MOF)-based prodrug was synthesized through a Schiff base reaction between UiO-66-NH<sub>2</sub> and 3,4-dihydroxybenzaldehyde (DHBD) drug, resulting in the formation of DHBD@MOF prodrug containing a pH-sensitive C = N bond. Additionally, a dual pH-responsive drug delivery platform was developed, which encapsulated both 5-Fluorouracil (5-FU) drug and DHBD@MOF prodrug within a hydrogel composed of carboxymethyl cellulose (CMC) and alginate (Alg.). The characteristics were analyzed using PXRD, FT-IR, FE-SEM, TEM, and BET. The release studies demonstrated that the hydrogel effectively protected the platform from burst release in the acidic conditions of the stomach and small intestine. Only 1.31% release of DHBD from DHBD@MOF/5-FU@hydrogel was observed after 2.5 h at pH 1.2, compared to near 90% release from DHBD@MOF prodrug under the same conditions. Upon swelling of the hydrogel in the intestine and colorectum at pH around 6.5–7.4, pH-sensitive C = N bonding of DHBD@MOF was cleaved at acidic colorectal cancer sites, activating the inactive prodrug. Furthermore, the hydrogel facilitated controlled release of DHBD and 5-FU in simulated gastric fluid (SGF) at different pH levels (1.2, 4.5, 7.4, and 6.5). The gradual release of DHBD from hydrogel in the intestine (pH 7.4, 8.5 h) and colorectum (pH 6.5, 24 h) was 10.60% and 41.68%, respectively. This allowed for significant accumulation of the inactive DHBD@MOF prodrug at acidic tumor sites, with 89.40% and 58.32% accessing the tumors after 8.5 h and 24 h, respectively. The findings of this research hold promise for applications in medical science and pharmaceutics after in vivo experiments.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2193 - 2203"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881958","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}
Shuai Zhang, Ning Yu, Yunyang Li, Pengyuan Zhang, Qichao Huang, Li Shen
{"title":"One-step synthesis of CuO/MCM-41 nanocomposites and their application in photocatalytic degradation of dyes","authors":"Shuai Zhang, Ning Yu, Yunyang Li, Pengyuan Zhang, Qichao Huang, Li Shen","doi":"10.1007/s10934-024-01665-x","DOIUrl":"10.1007/s10934-024-01665-x","url":null,"abstract":"<div><p>The CuO-mesoporous silicon oxide nanocomposites are widely used in the adsorption and degradation of environmental pollutants, attributing to the effective photogenerated electrons and holes and high specific surface area of mesoporous silicon oxide. In this papers, Cu(NO<sub>3</sub>)<sub>2</sub> was introduced during the assembly process of mesoporous silicon oxide to prepare CuO/MCM-41 nanocomposites by one-step method, which significantly simplified the preparation process compared to post-synthesis transplantation method. The prepared CuO/MCM-41 nanocomposites was characterized by Brunauer–Emmett–Teller (BET), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FE-SEM), Energy-dispersive X-ray Spectroscopy (EDS) and X-ray Diffraction (XRD). CuO/MCM-41 nanocomposites had excellent degradation effect under UV irradiation of 12W on different structures dyes, such as Methylene Blue(MB), Direct Fast Scarlet 4BS, Direct Yellow 27 and Reactive Turquoise Blue KN-G. It was demonstrated that the kinetic studies of photocatalytic degradation of MB were fitted well with the first-order kinetic model. The degradation of MB retained 97% after five cycles reusing of the catalyst. The results indicated that CuO/MCM-41 nanocomposites could be used as an effective photocatalyst for the degradation of different types of dyes in wastewater.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2177 - 2189"},"PeriodicalIF":2.5,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10934-024-01665-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866319","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}
{"title":"Folate-targeted albumin modified silica-gelatin hybrid nanocarrier involving synthesis and release characterization","authors":"Zahra Niazi, Mohsen Ashjari","doi":"10.1007/s10934-024-01664-y","DOIUrl":"10.1007/s10934-024-01664-y","url":null,"abstract":"<div><p>A novel hybrid of silica-gelatin modified by bovine serum albumin-folate was designed in the current study as a pH-sensitive drug carrier. The fluorouracil was loaded by entrapment efficiency of 70%. The nanocarrier was evaluated in terms of pH-sensitive release behavior in simulated acidic condition of cancer tissue (pH = 5.6), and the normal physiological condition of the body (pH = 7.4) for 96 h. In vitro, drug release from nanocarriers indicated a partial rapid release in the early times (34 and 21% after 12 h in acidic and neutral media), which was followed by a sustained and gradual release profile up to 65% in acidic medium, and 42% in natural medium after 96 h, confirming the pH-responsive behavior of the developed nanocarrier. The Higuchi model adequately described the release data. The results of kinetic model indicated that the release process is mainly controlled through diffusion mechanism. The toxicity study showed low toxicity of drug-free carriers against normal human dermal fibroblast cells (HDF) and human ovarian cancer cells (OVCAR-3). These outcomes support the proper function of the designed hybrid nanocarrier in targeted drug delivery.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2165 - 2175"},"PeriodicalIF":2.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141873056","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}
Denis Mutebi, Frantisek Miksik, Andrew M. Spring, Indri Yaningsih, Takahiko Miyazaki, Kyaw Thu
{"title":"Influence of aging on textural properties and symmetry of K-zeolites synthesized via a green route from waste pumice","authors":"Denis Mutebi, Frantisek Miksik, Andrew M. Spring, Indri Yaningsih, Takahiko Miyazaki, Kyaw Thu","doi":"10.1007/s10934-024-01663-z","DOIUrl":"10.1007/s10934-024-01663-z","url":null,"abstract":"<div><p>This study not only explores the fabrication of rare zeolites from waste pumice and examines the impact of aging on their porosity and adsorbate uptake but also provides practical insights for waste management and agricultural applications. The use of organic templates was avoided in the synthesis due to their high cost and pollution associated with their calcination. Potassium-exchanged gonnardite (K-Gon) and perlialite were hydrothermally synthesized using KOH. Interestingly, we found that increasing the magnetic stirring duration during synthesis had a significant impact on the products’ surface area and pore volume, leading to an increase from 39 m²/g to 182 m²/g and from 0.11 cm³/g to 0.30 cm³/g, respectively. This improvement resulted in an increased adsorbate uptake at higher pressures. At shorter stirring times, potassium-exchanged gonnardite zeolite with tetragonal symmetry was the most prevalent phase, which differs from the orthorhombic symmetry of Na-rich gonnardites. Additionally, we observed that the product content of perlialite (hexagonal symmetry) increased with longer stirring durations while K<sup>+</sup> ions decreased. This suggests that increased stirring time can increase the disorderliness of extra framework particles, as seen in perlialite, as opposed to K-Gon. Longer stirring time produces other zeolites with slightly less K but improved textural properties, which can potentially accommodate more water. It is also useful for agricultural purposes, such as keeping soils moist and decontaminated, and as adsorbents for greenhouses’ air conditioning.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 6","pages":"2153 - 2163"},"PeriodicalIF":2.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866414","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}