Journal of Porous Materials最新文献

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Nanostructures embedded on porous materials for the catalytic reduction of nitrophenols: a concise review 嵌入多孔材料的纳米结构用于硝基苯酚的催化还原:简明综述
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-26 DOI: 10.1007/s10934-024-01618-4
Alvin Lim Teik Zheng, Ellie Yi Lih Teo, Sivasangar Seenivasagam, Yiu Pang Hung, Supakorn Boonyuen, Eric Lim Teik Chung, Jacqueline Lease, Yoshito Andou
{"title":"Nanostructures embedded on porous materials for the catalytic reduction of nitrophenols: a concise review","authors":"Alvin Lim Teik Zheng,&nbsp;Ellie Yi Lih Teo,&nbsp;Sivasangar Seenivasagam,&nbsp;Yiu Pang Hung,&nbsp;Supakorn Boonyuen,&nbsp;Eric Lim Teik Chung,&nbsp;Jacqueline Lease,&nbsp;Yoshito Andou","doi":"10.1007/s10934-024-01618-4","DOIUrl":"10.1007/s10934-024-01618-4","url":null,"abstract":"<div><p>The reduction of nitrophenols is a broadly accepted model for catalytic processes. Incorporating nanostructures into porous materials is becoming more widely acknowledged for its great importance. This strategy has attracted much interest because of its exceptional features imparted on the catalysts, offering enormous promise in accelerating the reduction of nitrophenols. In recent years, various nanostructures have been embedded to a wide range of porous materials, such as carbon, silica, metal-organic frameworks, and other inorganic materials. These porous frameworks possess unique physical and chemical characteristics, making them well-suited for catalytic applications. This thorough review begins by explaining the mechanism of nitrophenol reduction, exploring several nanostructures based on noble metals that are commonly used for catalytic reduction. Following that, a systematic description and comparison of nitrophenols catalytic reduction using various nanostructures on porous templates such as carbon-based, silica-based, zeolite-based, polymer-based, and metal-organic frameworks (MOF) were explained. In addition, this paper also examines several functional materials to enhance the catalytic reduction of nitrophenols. Herein, this write-up intends to narrow the knowledge gap on the recently synthesized catalysts and the practical requirements for removing nitrophenol. This write-up is hoped to offer valuable insights that can aid in the practical utilization of these catalysts for wastewater remediation applications.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 5","pages":"1557 - 1575"},"PeriodicalIF":2.5,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801343","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
Silica-enhanced agarose monolith as a highly porous and robust adsorbent for the removal of cationic dyes from wastewater 二氧化硅增强型琼脂糖整体石是一种用于去除废水中阳离子染料的高孔坚固吸附剂
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-24 DOI: 10.1007/s10934-024-01622-8
Masoumeh Firouzy, Payman Hashemi, Alireza Ghiasvand
{"title":"Silica-enhanced agarose monolith as a highly porous and robust adsorbent for the removal of cationic dyes from wastewater","authors":"Masoumeh Firouzy,&nbsp;Payman Hashemi,&nbsp;Alireza Ghiasvand","doi":"10.1007/s10934-024-01622-8","DOIUrl":"10.1007/s10934-024-01622-8","url":null,"abstract":"<div><p>A silica-enhanced agarose monolith adsorbent was synthesized and evaluated as a highly porous and robust adsorbent for the removal of Janus Green B (JGB) as a cationic dye from aqueous solutions. For this purpose, the molded agarose monolith adsorbent was reinforced by incorporating silica into its structure. The effects of sample volume, pH, contact time, and stirring speed on the removal efficiency of the sorbent were optimized using a response surface methodology with a central composite design. Under the optimal conditions, the monolith achieved satisfactory removal efficiencies greater than 98% for JGB. The maximum adsorption capacity of the agarose-silica adsorbent for 200 mg L<sup>− 1</sup> of JGB was approximately 60 mg g<sup>− 1</sup>. Structural and morphological characterization was performed using Fourier transform infrared spectroscopy, scanning electronic microscopy and, energy-dispersive X-ray spectroscopy. The monolith exhibited excellent regenerable properties, with a removal efficiency exceeding 96% after three times of usages. Equilibrium adsorption data showed better agreement with the Freundlich isotherm model compared to Langmuir. This work demonstrated the enhanced physical stability and high porosity of the agarose-silica monoliths for the efficient removal of JGB cationic dye from real-life water and wastewater samples.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1519 - 1530"},"PeriodicalIF":2.5,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140660287","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
Simultaneous treatment of oil and dye-contaminated water by a novel composite 利用新型复合材料同时处理油类和染料污染的水体
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-24 DOI: 10.1007/s10934-024-01613-9
Deepika P. Joshi, Vivek Negi, Neetu Bora
{"title":"Simultaneous treatment of oil and dye-contaminated water by a novel composite","authors":"Deepika P. Joshi,&nbsp;Vivek Negi,&nbsp;Neetu Bora","doi":"10.1007/s10934-024-01613-9","DOIUrl":"10.1007/s10934-024-01613-9","url":null,"abstract":"<div><p>Expanded Graphite (EG) has been widely used for treating oil-polluted water. Removal of dye pigments from oily wastewater is the biggest challenge for paint industries. So, the present work focuses on treating simultaneously oil and dye-contaminated water by introducing TiO<sub>2</sub>/EG composite. EG samples with the highest exfoliation volume have been prepared by microwave irradiation by optimizing time and tested through an oil adsorption study with different oils. TiO<sub>2</sub> NPs have been synthesized by the sol–gel method. A novel EG/TiO<sub>2</sub> composite has been synthesized by mixing TiO<sub>2</sub> NPs in graphite intercalation compound (precursor) and exfoliating the mixture for the optimized irradiation time. A comparative study of the effect of EG, TiO<sub>2</sub> NPs, and EG3/TiO<sub>2</sub> composite on oil and dye-polluted water has been performed in direct sunlight. Results of UV–visible spectroscopy showed that the addition of TiO<sub>2</sub> NPs with EG accomplished the dye degradation along with the adsorption of oil from polluted water.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 5","pages":"1545 - 1555"},"PeriodicalIF":2.5,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663840","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
Porous network of nitrogen self-doped honeycomb like activated carbon derived from Caladium tricolor leaves: a multifunctional platform for energy and environmental applications 从三色钙叶中提取的自掺氮蜂窝状活性炭多孔网络:能源和环境应用的多功能平台
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-23 DOI: 10.1007/s10934-024-01580-1
Vishnu Sankar Sivasankarapillai, Shankar Baskaran, Atchaya Sundararajan, Masoom Raza Siddiqui, Saikh Mohammad Wabaidur, Azhagumuthu Muthukrishnan, Ragupathy Dhanusuraman
{"title":"Porous network of nitrogen self-doped honeycomb like activated carbon derived from Caladium tricolor leaves: a multifunctional platform for energy and environmental applications","authors":"Vishnu Sankar Sivasankarapillai,&nbsp;Shankar Baskaran,&nbsp;Atchaya Sundararajan,&nbsp;Masoom Raza Siddiqui,&nbsp;Saikh Mohammad Wabaidur,&nbsp;Azhagumuthu Muthukrishnan,&nbsp;Ragupathy Dhanusuraman","doi":"10.1007/s10934-024-01580-1","DOIUrl":"10.1007/s10934-024-01580-1","url":null,"abstract":"<div><p>Activated carbon with appreciable level of porosity and honeycomb like structure was synthesized through simple KOH activation of biochar obtained from <i>Caladium tricolor</i> leaves. The synthesized activated carbon was characterized for morphological and structural characteristics using various techniques. The material possesses an enhanced BET surface area (S<sub>BET</sub>) of 1429m<sup>2</sup>/g with significant microporous texture. XPS data revealed the presence of Nitrogen as the inherent dopant in the material which enhance electrochemical and adsorption perfmance. The activated carbon has been employed as electrode material for electrical double layer type capacitance (EDLC) type supercapacitor which showed promising specific capacitance of 428 F/g at a current density of 1 A/g. Cyclic stability studies revealed a retention of capacitance of 98% for 5000 cycles. Further, adsorption studies were conducted using Furazolidone drug and the adsorption efficiency was found to be 90% following Langmuir isotherm model. Kinetic studies revealed that the adsorption follows pseudo-second order kinetics. The material also investigated for ORR activity which showed notable results which can be further improved to be employed as a metal free Oxygen reduction reaction (ORR) catalyst.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1489 - 1502"},"PeriodicalIF":2.5,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669560","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
Efficient and low-cost mesoporous magnetic carbon composites derived from date palm stones for environmental remediation of hexavalent chromium 提取自枣椰石的高效低成本介孔磁性碳复合材料用于六价铬的环境修复
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-23 DOI: 10.1007/s10934-024-01611-x
Shaimaa K. Mohamed, Ahmed Shahat, Mostafa Atito, Rasha M. Kamel
{"title":"Efficient and low-cost mesoporous magnetic carbon composites derived from date palm stones for environmental remediation of hexavalent chromium","authors":"Shaimaa K. Mohamed,&nbsp;Ahmed Shahat,&nbsp;Mostafa Atito,&nbsp;Rasha M. Kamel","doi":"10.1007/s10934-024-01611-x","DOIUrl":"10.1007/s10934-024-01611-x","url":null,"abstract":"<div><p>This study was performed to achieve two important scientifically challenging goals, environmental remediation of toxic heavy metals and utilization of agricultural lignocellulosic wastes. In this work, a series of mesoporous magnetic carbon (MMC) adsorbents were synthesized by carbothermic reduction at different temperatures employing date palm (Phoenix dactylifera L.) stones as the carbon source. The synthesized adsorbents were characterized by different technquies and the results confirmed the presence of zero-valent iron (ZVI) nanoparticles and other iron oxides as products of the carbothermal reduction. The nature of phases present, crystallite size and the surface properties were found to be dependent on the calcination temperature. The adsorbent MMC700 exhibited the smallest (ZVI) crystallite size 36 nm and the largest S<sub>BET</sub> 341 m<sup>2</sup>/g. All adsorbents showed mesoporous structure with mesopore average diameter lower than 6 nm. The performance was evaluated in the removal process of toxic Cr(VI) in an aqueous medium, and the optimum conditions of the process were reported. The removal process was dependant of solution pH where best results was achieved at pH = 2. Complete removal of chromium was achieved in less than 5 min by MMC700. The results were better fitted with pseudo-second-order kinetics and followed the Freundlich model isotherm. The maximum adsorption capacity was found to be 265.25 mg/g for MMC700, suggesting its application as an efficient, low-cost, and easily separable adsorbent for the toxic Cr(VI) removal process. The prepared adsorbents exhibited superior performance in the removal process compared to other agricultural wastes or biomass - derived adsorbents reported in literature.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1503 - 1517"},"PeriodicalIF":2.5,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10934-024-01611-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140668855","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
Tuning crystal size and inhibiting aggregation by adding guanidinoacetic acid in ZSM-5 zeolite synthesis for catalysing methanol-to-olefin reaction 在催化甲醇制烯烃反应的 ZSM-5 沸石合成中添加胍基乙酸调节晶体尺寸并抑制聚集
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-20 DOI: 10.1007/s10934-024-01615-7
Cunmei Dong, Hongjiang Li, Shenmin Li, Yingna Cui, Xinping Wang
{"title":"Tuning crystal size and inhibiting aggregation by adding guanidinoacetic acid in ZSM-5 zeolite synthesis for catalysing methanol-to-olefin reaction","authors":"Cunmei Dong,&nbsp;Hongjiang Li,&nbsp;Shenmin Li,&nbsp;Yingna Cui,&nbsp;Xinping Wang","doi":"10.1007/s10934-024-01615-7","DOIUrl":"10.1007/s10934-024-01615-7","url":null,"abstract":"<div><p>Nanosized ZSM-5 zeolite with high-quality is highly desired in industrial application. This paper reports an approach of rapid synthesis of this type zeolite, being realized by crystallizing gels with the Si/Al atomic ratio of 12.5–80 at 170 ℃ for 12 h under assistance of guanidinoacetic acid (GAA). As a result, the zeolite obtained from the synthesis possesses little crystal size (120–220 nm), high-quality and good monodispersity. Being associated with the superior morphology and structure, the zeolite displayed not only longer one-pass catalytic lifetime but also much higher regeneration stability in methanol-to-olefin reaction, comparing with the zeolite synthesized without GAA addition.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1477 - 1488"},"PeriodicalIF":2.5,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627237","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
Ordered mesoporous MCM-41 containing cobalt ferrite as high-performance catalyst in the synthesis of 5-substituted 1H-tetrazoles and oxidation of sulfides 含钴铁氧体的有序介孔 MCM-41 作为高性能催化剂用于合成 5-取代的 1H- 四唑和氧化硫化物
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-20 DOI: 10.1007/s10934-024-01594-9
Somayeh Molaei, Mohammad Ghadermazi
{"title":"Ordered mesoporous MCM-41 containing cobalt ferrite as high-performance catalyst in the synthesis of 5-substituted 1H-tetrazoles and oxidation of sulfides","authors":"Somayeh Molaei,&nbsp;Mohammad Ghadermazi","doi":"10.1007/s10934-024-01594-9","DOIUrl":"10.1007/s10934-024-01594-9","url":null,"abstract":"<div><p>A multifunctional catalyst with attractive recuperation was manufactured by impregnating 4-dimethylamino pyridine (MP) with Ni supported on MCM-41 coated with CoFe<sub>2</sub>O<sub>4</sub> (MCM-41/CoFe<sub>2</sub>O<sub>4</sub>/MP/Ni), which effectively acted as a selective catalyst for the synthesis of tetrazole and selective oxidation of sulfide with high effectiveness. The structures of the hybrid were examined by high-resolution transmission electron microscopies (TEM), field emission scanning electron microscopy (SEM), energy-dispersive X-ray spectrometer (EDS), Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), vibrating-sample magnetometer (VSM), elemental mapping, and nitrogen adsorption−desorption isotherm. The hexagonal system of MCM-41 is well preserved after CoFe<sub>2</sub>O<sub>4</sub> and 4-dimethylamino pyridine/Ni embedding. Results showed that the magnetite nanoparticles were coated with the MCM-41 silica with the formation of core–shell structured materials, and the 4-dimethylamino pyridine (MP) was successfully immobilized on the core–shell structured support. In this approach, the MCM-41/CoFe<sub>2</sub>O<sub>4</sub>/MP/Ni composite with spherical particles consisted of a mesoporous structure. This catalyst was recovered and reused several times without significantly decreasing efficiency and stability.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1463 - 1476"},"PeriodicalIF":2.5,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627497","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
Superhydrophilic and oleophobic porous aerogel based on biomass carbon for solar-dirven interfacial evaporation 基于生物质碳的多孔气凝胶具有超亲水性和疏油性,可用于太阳能-空气界面蒸发
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-17 DOI: 10.1007/s10934-024-01606-8
Shun Lu, Chaohu Xiao, Qi Tian, Xiaotong Mu, Jiale Yu, Qimeige Hasi, Yuhan Zhang, Lihua Chen
{"title":"Superhydrophilic and oleophobic porous aerogel based on biomass carbon for solar-dirven interfacial evaporation","authors":"Shun Lu,&nbsp;Chaohu Xiao,&nbsp;Qi Tian,&nbsp;Xiaotong Mu,&nbsp;Jiale Yu,&nbsp;Qimeige Hasi,&nbsp;Yuhan Zhang,&nbsp;Lihua Chen","doi":"10.1007/s10934-024-01606-8","DOIUrl":"10.1007/s10934-024-01606-8","url":null,"abstract":"<div><p>Although photothermal materials (PMs) are widely utilized in pure water and seawater, there is less research on the design and preparation of multifunctional photothermal materials with organic dye adsorption and oil displacement properties. In this study, biomass carbon aerogel (BC) was prepared through a simple Ca<sup>2+</sup> cross-linking and freeze-drying process. To enhance the antifouling performance of BC, hydrophilic and oleophobic chemical modification was conducted to obtain BC-SP. The contact angle of n-hexadecane can reach to 141.8°, which enable the extensive application of BC-SP in oil-bearing wastewater treatment. Notably, BC-SP exhibited exceptional light absorption efficiency (approximately 95%), excellent heat insulation performance (thermal conductivity 0.0650 W m<sup>− 1</sup> K<sup>− 1</sup>), and rapid water transport capability. Under the irradiation of 1 kW m<sup>− 2</sup>, the solar energy conversion efficiency can reach to 86.8%. After tested eight cycles, the evaporation efficiency remained relatively stable and can adsorb most organic dyes in dye wastewater. Therefore, the study of BC-SP in this paper may has broad practical application prospects.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1453 - 1462"},"PeriodicalIF":2.5,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611689","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
Influence of the crystalline structure of Co-Mo precursors on the hydrodesulfurization performance of unsupported tube-like Co-Mo sulfide catalysts 钴-钼前驱体的晶体结构对无支撑管状硫化钴-钼催化剂加氢脱硫性能的影响
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-16 DOI: 10.1007/s10934-024-01592-x
Zhengting Xiao, Qingyang Li, Guangci Li, Wentai Wang, Xuebing Li, Song Chen, Chunhu Li
{"title":"Influence of the crystalline structure of Co-Mo precursors on the hydrodesulfurization performance of unsupported tube-like Co-Mo sulfide catalysts","authors":"Zhengting Xiao,&nbsp;Qingyang Li,&nbsp;Guangci Li,&nbsp;Wentai Wang,&nbsp;Xuebing Li,&nbsp;Song Chen,&nbsp;Chunhu Li","doi":"10.1007/s10934-024-01592-x","DOIUrl":"10.1007/s10934-024-01592-x","url":null,"abstract":"<div><p>A series of Co-Mo sulfide catalysts with tube-like hollow structure were prepared by a low temperature pre-sulfurization method using various CoMoO<sub>4</sub> as precursors synthesized by coprecipitation process at different temperature. The crystallite structure of CoMoO<sub>4</sub> precursors determined the properties of Co-Mo sulfide catalysts, including pore structure, concentration of CoMoS active phase, microstructure of MoS<sub>2</sub> slabs, and desulfurization activity. The higher temperature led to better crystallinity of CoMoO<sub>4</sub> precursor, resulting in less CoMoS active phase and fewer Mo atoms at the corner sites of the pre-sulfurized catalyst. In addition, the MoS<sub>2</sub> slabs with shorter length and more stacking layers (especially Co-promoted MoS<sub>2</sub> slabs) in the catalysts are also formed at appropriate precursor preparation temperature, which are favorable for forming more unsaturated coordination sites (especially corner sites). According to the results of hydrodesulfurization of dibenzothiophene on the Co-Mo sulfide catalysts, the reaction rate and the production yield are highly dependent on the number of surface-active centers, while the activity is mainly attributed to the Type II CoMoS species.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1437 - 1452"},"PeriodicalIF":2.5,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140580892","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
Influence of the solvent removal method on the morphology of polystyrene porous structures prepared via thermally induced phase separation 溶剂去除方法对通过热诱导相分离制备的聚苯乙烯多孔结构形态的影响
IF 2.5 4区 材料科学
Journal of Porous Materials Pub Date : 2024-04-14 DOI: 10.1007/s10934-024-01597-6
Patrik Boura, Alexandr Zubov, Bart Van der Bruggen, Juraj Kosek
{"title":"Influence of the solvent removal method on the morphology of polystyrene porous structures prepared via thermally induced phase separation","authors":"Patrik Boura,&nbsp;Alexandr Zubov,&nbsp;Bart Van der Bruggen,&nbsp;Juraj Kosek","doi":"10.1007/s10934-024-01597-6","DOIUrl":"10.1007/s10934-024-01597-6","url":null,"abstract":"<div><p>Thermally induced phase separation (TIPS) allows preparation of nano and micro-porous structured materials for various applications. The literature thoroughly examines the impact of initial polymer solution concentration and cooling rate on the products morphology. On the contrary, the influence of the solvent removal methods was so far researched scarcely. Hence, we compare both qualitatively and quantitatively the effects of the solvent removal method on pore size distribution, structure, porosity, and thermal conductivity. Our study was carried out with samples prepared by TIPS from polystyrene/cyclohexane solutions employing either extraction agent or lyophilization at different solvent removal temperatures. Materials exhibited interconnected pore structure, implying good sound insulation properties, and had low thermal conductivity, offering the combination of thermal and sound insulation in one layer of material. Pore sizes after lyophilization were up to two times larger than after solvent removal by an extraction agent. On the other hand, the use of extraction agent led up to 10% porosity decrease with average porosity after lyophilization being above 82%. Our findings demonstrate that the solvent removal method is an important parameter during TIPS and that pros and cons of both methods should be carefully considered to obtain optimal material and TIPS process economy.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"31 4","pages":"1425 - 1435"},"PeriodicalIF":2.5,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10934-024-01597-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140580846","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
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