Transition Metal Chemistry最新文献

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Highly selective ethanol detection on sheet-like ZnO sensor synthesized by microemulsion 微乳液合成片状ZnO传感器的高选择性乙醇检测
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-22 DOI: 10.1007/s11243-024-00615-5
Fahimeh Hooriabad Saboor, Seyed Parsa Amouzesh, Abbas Ali Khodadadi, Yadollah Mortazavi
{"title":"Highly selective ethanol detection on sheet-like ZnO sensor synthesized by microemulsion","authors":"Fahimeh Hooriabad Saboor,&nbsp;Seyed Parsa Amouzesh,&nbsp;Abbas Ali Khodadadi,&nbsp;Yadollah Mortazavi","doi":"10.1007/s11243-024-00615-5","DOIUrl":"10.1007/s11243-024-00615-5","url":null,"abstract":"<div><p>Sheet-like ZnO nanoparticles (SZNs) were synthesized using a microemulsion method and characterized by XRD, BET, DRS, and FESEM techniques. These nanoparticles were then utilized as selective ethanol sensors operating at temperatures between 300 and 450 °C. When precursor ZnO concentrations were high, the average particle size of the SZNs increased, which was reflected in the sharper diffraction peaks observed in the XRD results. The low band gap of SZNs, attributed to their 2D morphology, was confirmed by the Tauc diagram. The SZN sensors demonstrated a remarkable selectivity for ethanol, with response levels up to 77 times higher than for CO and 3700 times higher than for CH<sub>4</sub>, achieving a limit of detection between 2.7 and 13.3 ppm. By fine-tuning the microemulsion conditions, the SZN4 sensor achieved an exceptionally high response to ethanol, about 106 times, and up to 30 times higher compared to TCE, toluene, and propane. Furthermore, the SZN4 and SZN5 sensors exhibited a relative insensitivity to humidity, with only a 26% and 17% reduction in ethanol response, respectively.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"183 - 195"},"PeriodicalIF":1.6,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 thermal treatment on the kinetics of manganese leaching from laterite ore 热处理对红土锰矿浸出动力学的影响
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-11-16 DOI: 10.1007/s11243-024-00614-6
Yohandri Bow, Gyan Prameswara, Himmah Sekar Eka Ayu Gustiana, Idi Amin, Flaviana Yohanala Prista Tyassena, Andi Nurfaadhilah Ulfah, Iga Trisnawati, Wahyu Budi Utomo, Fajriati Mas’ud, Dewi Purnama Sari, Anerasari Meidinariasty, Dilia Puspa, Adi Syakdani, Muhammad Iqbal Al Fuady
{"title":"Influence of thermal treatment on the kinetics of manganese leaching from laterite ore","authors":"Yohandri Bow,&nbsp;Gyan Prameswara,&nbsp;Himmah Sekar Eka Ayu Gustiana,&nbsp;Idi Amin,&nbsp;Flaviana Yohanala Prista Tyassena,&nbsp;Andi Nurfaadhilah Ulfah,&nbsp;Iga Trisnawati,&nbsp;Wahyu Budi Utomo,&nbsp;Fajriati Mas’ud,&nbsp;Dewi Purnama Sari,&nbsp;Anerasari Meidinariasty,&nbsp;Dilia Puspa,&nbsp;Adi Syakdani,&nbsp;Muhammad Iqbal Al Fuady","doi":"10.1007/s11243-024-00614-6","DOIUrl":"10.1007/s11243-024-00614-6","url":null,"abstract":"<div><p>Ni extraction from laterite ore has progressively intensified via various hydrometallurgical methods. One of the by-products of the leaching process is Mn, which can increase the resilience of this metal supply on the market. By observing the effects of the laterite roasting temperature and the effects of the Mn leaching temperature and duration, we can obtain insight into the coextraction of Mn from laterite leaching. Roasting was carried out at 280 and 610 °C, whereas leaching experiments were conducted at 30–90 °C for 0–120 min. The leaching efficiency of Mn increased with increasing roasting temperature, leaching temperature, and leaching duration. The optimum leaching conditions were obtained using a 280 °C roasted sample at a leaching temperature of 90 °C for 90 min. Under these conditions, the Mn leaching efficiency reached 95.5%. Roasting also affects the Mn leaching kinetics parameters, and increasing the roasting temperature results in an increase in the Ea value of the leaching process.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"175 - 182"},"PeriodicalIF":1.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic extract of iron ore-derived goethite microparticles as a promising heterogeneous Fenton-like catalyst for brilliant green dye discolorization 铁矿针铁矿微颗粒磁性萃取物作为一种有前途的非均相fenton类催化剂用于艳绿染料脱色
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-10-30 DOI: 10.1007/s11243-024-00613-7
Nawal Fodil Cherif, Aissat Fares, Jamila Naïma Nait Abdallah, Amel Benzidoun, Safia Zemmache, Sara Belmiri, Souad Hazam, Souhila Djema, Aoulmi Fodil, Ouahiba Bechiri, Rafik Benrabaa
{"title":"Magnetic extract of iron ore-derived goethite microparticles as a promising heterogeneous Fenton-like catalyst for brilliant green dye discolorization","authors":"Nawal Fodil Cherif,&nbsp;Aissat Fares,&nbsp;Jamila Naïma Nait Abdallah,&nbsp;Amel Benzidoun,&nbsp;Safia Zemmache,&nbsp;Sara Belmiri,&nbsp;Souad Hazam,&nbsp;Souhila Djema,&nbsp;Aoulmi Fodil,&nbsp;Ouahiba Bechiri,&nbsp;Rafik Benrabaa","doi":"10.1007/s11243-024-00613-7","DOIUrl":"10.1007/s11243-024-00613-7","url":null,"abstract":"<div><p>This research study shows that naturally occurring goethite-rich iron ore from the Tebessa region of Algeria can be positioned as a sustainable and cost-effective alternative for water treatment and natural catalyst development. This locally sourced and naturally occurring iron ore promotes a heterogeneous Fenton-like reaction for the decolorization of brilliant green (BG) dye under neutral pH conditions. The iron ore sample was collected and processed using cost-effective laboratory preparation methods. The treated iron ore sample has been thoroughly characterized in terms of composition, structure, and morphology revealing that the natural iron ore consists mainly of goethite (59%), with minor amounts of quartz, illite, and kaolinite. Further analysis showed that the studied ore exhibits mesoporous properties with a BET-surface area of 45 m<sup>2</sup>/g. UV–Vis diffuse reflectance spectroscopy confirmed the presence of iron oxide minerals, notably goethite and hematite phases. Indeed, we investigated the decolorization rate of BG dye solution using different concentrations of H<sub>2</sub>O<sub>2</sub> activated with different doses of goethite-rich iron ore catalyst at 25 °C and 45 °C. During this heterogenous process, several kinetic models were examined. Preliminary experiments revealed that the optimal conditions for achieving 95% BG dye decolorization were a dye concentration of 10 mg/L, an H<sub>2</sub>O<sub>2</sub> concentration of 3.0 mM, and an iron ore catalyst dose of 0.2 g/L, all within a reaction time of 2 h. This work may contribute to advance the use of natural catalysts in the challenging task of decolorization of other dyes.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"161 - 174"},"PeriodicalIF":1.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Syntheses, crystal structures and fluorescence properties of zinc(II) and cadmium(II) complexes based on 2-phenoxyaniline Schiff base 基于2-苯氧苯胺席夫碱的锌(II)和镉(II)配合物的合成、晶体结构和荧光性质
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-10-22 DOI: 10.1007/s11243-024-00612-8
Jiahui Cao, Zhiyu Jia, Wei Chen, Yangyang Song, Zhou Yu, Yuwei Dong
{"title":"Syntheses, crystal structures and fluorescence properties of zinc(II) and cadmium(II) complexes based on 2-phenoxyaniline Schiff base","authors":"Jiahui Cao,&nbsp;Zhiyu Jia,&nbsp;Wei Chen,&nbsp;Yangyang Song,&nbsp;Zhou Yu,&nbsp;Yuwei Dong","doi":"10.1007/s11243-024-00612-8","DOIUrl":"10.1007/s11243-024-00612-8","url":null,"abstract":"<div><p>Three new mononuclear Zn<sup>II</sup> and Cd<sup>II</sup> complexes have been designed and synthesized by using 2-phenoxyaniline Schiff base as ligands. Complexes 1–3 have been characterized by elemental analysis, FT-IR, <sup>1</sup>H NMR, and single-crystal X-ray diffraction. The structures of complexes <b>1</b>–<b>3</b> were analyzed by single-crystal X-ray diffraction, and intermolecular hydrogen bonds (C–H···Cl and π···π stacking) were found to connect the mononuclear molecules, forming supramolecular structures. The relationships between their photophysical properties and structures were studied by UV–visible absorption spectroscopy and fluorescence spectroscopy. The maximum emission wavelengths of complexes 1–3 in solid state vary within the range of 494–533 nm, and they emit bright yellow-green fluorescence under UV lamp irradiation. These properties indicate that these complexes can be used as potential fluorescent materials. Also, the molecular orbital densities and different energy levels are obtained by using the density functional theory methods.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"151 - 160"},"PeriodicalIF":1.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three metal organic frameworks constructed with 2,2′:6′2′′-terpyridine-4′-carboxylic acid: syntheses, structures and selective dye adsorption 用 2,2′:6′2′′-四吡啶-4′-羧酸构建的三种金属有机框架:合成、结构和选择性染料吸附
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-10-13 DOI: 10.1007/s11243-024-00611-9
Guo-Rong Peng, Wen-Hui Yao, Hao-Bo Zhang, Yan-Hong Zhang
{"title":"Three metal organic frameworks constructed with 2,2′:6′2′′-terpyridine-4′-carboxylic acid: syntheses, structures and selective dye adsorption","authors":"Guo-Rong Peng,&nbsp;Wen-Hui Yao,&nbsp;Hao-Bo Zhang,&nbsp;Yan-Hong Zhang","doi":"10.1007/s11243-024-00611-9","DOIUrl":"10.1007/s11243-024-00611-9","url":null,"abstract":"<div><p>Three metal organic frameworks [Cu<sub>3</sub>(tpyc)<sub>3</sub>(H<sub>2</sub>btc)(Hbtc)·5H<sub>2</sub>O]<sub>n</sub> <b>(1)</b> [Mn(tpyc)(H<sub>2</sub>O)<sub>2</sub>·ClO<sub>4</sub>]<sub>n</sub> (<b>2</b>) and [Mn(tpyc)(bdc)<sub>0.5</sub>(H<sub>2</sub>O)]<sub>n</sub> (<b>3</b>) have been synthesized by using 2,2′:6′2′′-terpyridine-4′-carboxylic acid (Htpyc) in the presence of different auxiliary ligands (H<sub>3</sub>btc = 1,3,5-benzenetricarboxylic acid, H<sub>2</sub>suc = succinic acid, H<sub>2</sub>bdc = 1,4-benzene dicarboxylic acid) under solvothermal conditions. They were analyzed by elemental analysis, FT-IR, X-ray single crystal diffraction, PXRD and TGA. The results show that MOF <b>1</b> displays a 1D chain structure, which is further assembled to a 3D architecture via multiple intermolecular hydrogen bonds. MOF <b>2</b> also presents a 1D chain structure and the adjacent chains are further connected by hydrogen bonds O1–H1B∙∙∙O2#1, finally forming a 2D layered structure. For MOF <b>3</b>, its 3D framework structure is formed by hydrogen bond O5–H5A∙∙∙O2#1 and O5–H5B∙∙∙O3#2 interaction between adjacent 1D chains. Furthermore, dye adsorption studies indicate that MOF <b>3</b> can selectively adsorb organic dye Congo red.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"139 - 150"},"PeriodicalIF":1.6,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, crystal structures and CT-DNA/BSA binding of Cd(II) and Mn(II) complexes with 5-hydroxypyrazine-2-carboxylic acid as a ligand 以5-羟吡嗪-2-羧酸为配体的Cd(II)和Mn(II)配合物的合成、晶体结构和CT-DNA/BSA结合
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-10-02 DOI: 10.1007/s11243-024-00610-w
Yanhong Yang, Rui Wang, Bing Li, Xiaoshuang Zhu, Jiawei Liang, Hongyan Wu, Shoufeng Fu, Jiaxing He, Xiaoyan Chen
{"title":"Synthesis, crystal structures and CT-DNA/BSA binding of Cd(II) and Mn(II) complexes with 5-hydroxypyrazine-2-carboxylic acid as a ligand","authors":"Yanhong Yang,&nbsp;Rui Wang,&nbsp;Bing Li,&nbsp;Xiaoshuang Zhu,&nbsp;Jiawei Liang,&nbsp;Hongyan Wu,&nbsp;Shoufeng Fu,&nbsp;Jiaxing He,&nbsp;Xiaoyan Chen","doi":"10.1007/s11243-024-00610-w","DOIUrl":"10.1007/s11243-024-00610-w","url":null,"abstract":"<div><p>Due to the potential applications of bioactive compounds, two isomorphous mononuclear coordination polymers [M(pydc)(H<sub>2</sub>O)]<sub>n</sub> (M = Cd (<b>1</b>), Mn (<b>2</b>), H<sub>2</sub>pydc = 5-hydroxypyrazine-2-carboxylic acid) were synthesized and fully characterized by single-crystal X-ray diffraction, elemental analysis, thermogravimetric analysis, infrared spectroscopy, <sup>1</sup>H nuclear magnetic resonance spectroscopy, X-ray photoelectron spectroscopy and powder X-ray diffraction analysis. Complexes <b>1</b> and <b>2</b> are six-coordinated motifs and exhibit slightly deformed octahedral geometry, which extends into three-dimensional frame structures. Complexes <b>1</b> and <b>2</b> interact with calf thymus DNA (CT-DNA) through intercalation, hydrogen bonding and van der Waals forces. Both complexes had good binding propensity for bovine serum albumin (BSA) with a relatively high binding constant (10<sup>4</sup> L mol<sup>−1</sup>) superior to that of H<sub>2</sub>pydc (10<sup>3</sup> L mol<sup>−1</sup>). The interactions between H<sub>2</sub>pydc, complexes <b>1</b> and <b>2</b> and BSA were static quenching procedures. Site competition experiments showed that the ligands and complexes interact with BSA at site II.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 2","pages":"127 - 138"},"PeriodicalIF":1.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Substituted Fe(II)-terpyridyl complexes for DNA binding studies 取代铁(II)-三吡啶配合物用于DNA结合研究
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-09-23 DOI: 10.1007/s11243-024-00607-5
Rahat Gupta, Shriya Mahajan, Amlan K. Pal
{"title":"Substituted Fe(II)-terpyridyl complexes for DNA binding studies","authors":"Rahat Gupta,&nbsp;Shriya Mahajan,&nbsp;Amlan K. Pal","doi":"10.1007/s11243-024-00607-5","DOIUrl":"10.1007/s11243-024-00607-5","url":null,"abstract":"<div><p>Four Fe(II) complexes, <b>1</b>–<b>3</b> and <b>R1</b> with differently substituted tpy ligands were synthesized and characterized by a set of analytical techniques including 1D (<sup>1</sup>H, <sup>13</sup>C, 135-<sup>13</sup>C DEPT-135), 2D (<sup>1</sup>H-<sup>1</sup>H COSY) NMR spectroscopies and high-resolution mass spectrometry (HRMS). The ability of each compound to bind DNA was assessed by UV–visible titration assays using DNA extracted from Pisum sativum (split peas). UV–visible titration tests were performed to ascertain the binding affinity of these complexes with DNA, and the results indicated that the complexes are groove binders with binding constants in the range of 1.23–2.66 × 10<sup>4</sup>. To confirm that the complexes were binding with DNA through groove-binding, molecular docking studies using <b>1</b> and <b>2</b> with Dickerson-drew dodecamer B-DNA structure (PDB ID: 1B-DNA) were carried out which showed compatibility with the experimental data.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 1","pages":"89 - 99"},"PeriodicalIF":1.6,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimized green synthesis of biocompatible Ag nanostructures using Artemisia Indica leaf extract: a promising avenue for biomedical applications 利用印度蒿叶提取物优化生物相容性银纳米结构的绿色合成:生物医学应用的一个前景广阔的途径
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-09-18 DOI: 10.1007/s11243-024-00608-4
Manoj Manikrao Gadewar, G. K Prashanth, Srilatha Rao, H. S. Lalithamba, N. P. Bhagya, A. S. Sowmyashree, K. Shwetha, Hemantkumar N. Akolkar
{"title":"Optimized green synthesis of biocompatible Ag nanostructures using Artemisia Indica leaf extract: a promising avenue for biomedical applications","authors":"Manoj Manikrao Gadewar,&nbsp;G. K Prashanth,&nbsp;Srilatha Rao,&nbsp;H. S. Lalithamba,&nbsp;N. P. Bhagya,&nbsp;A. S. Sowmyashree,&nbsp;K. Shwetha,&nbsp;Hemantkumar N. Akolkar","doi":"10.1007/s11243-024-00608-4","DOIUrl":"10.1007/s11243-024-00608-4","url":null,"abstract":"<div><p><i>Artemisia indica,</i> belonging to the family Asteraceae, is renowned for its rich phytoconstituents and traditional medicinal uses. This study aimed to optimize the green synthesis of biocompatible Ag NPs using varying concentrations of <i>A. indica</i> leaf extract and AgNO3. The objectives were to characterize the synthesized NPs and evaluate their potential biomedical applications. The synthesized NPs were characterized using FTIR, XRD, TEM, and Zeta sizer. The results indicated an average particle size of approximately 20 nm and a zeta potential of −23.4 mV, confirming their stability. PXRD analysis demonstrated the crystalline nature of the NPs, while FTIR analysis confirmed the capping of phytoconstituents on the nanoparticle surface. Biocompatibility was assessed using the MTT assay on the L929 cell line, showing 83% cell viability, indicating non-toxicity. Additionally, the green-synthesized NPs exhibited significant antibacterial activity at a concentration of 500 μg/mL, as evidenced by a clear zone of inhibition. This study highlights a rapid, eco-friendly synthesis method for Ag NPs, paving the way for novel biomedical applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 1","pages":"101 - 114"},"PeriodicalIF":1.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facile recovery of terephthalic acid from PET bottles via acid hydrolysis with nitric acid and applications in synthesis of cobalt MOFs 通过硝酸酸水解从 PET 瓶中轻松回收对苯二甲酸及其在钴 MOFs 合成中的应用
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-09-16 DOI: 10.1007/s11243-024-00609-3
Victor Seabra, João M. R. Gonçalves, Ana L. S. Moura, Vinícius G. Luna, Pedro H. O. Santiago, Javier Ellena, Benedito S. Lima-Neto
{"title":"Facile recovery of terephthalic acid from PET bottles via acid hydrolysis with nitric acid and applications in synthesis of cobalt MOFs","authors":"Victor Seabra,&nbsp;João M. R. Gonçalves,&nbsp;Ana L. S. Moura,&nbsp;Vinícius G. Luna,&nbsp;Pedro H. O. Santiago,&nbsp;Javier Ellena,&nbsp;Benedito S. Lima-Neto","doi":"10.1007/s11243-024-00609-3","DOIUrl":"10.1007/s11243-024-00609-3","url":null,"abstract":"<div><p>Poly(ethylene terephthalate) (PET) taken from postconsumer commercial water bottles was subjected to acid hydrolysis with HNO₃ to recover terephthalic acid (H₂TPA). The H₂TPA was submitted to mono-nitration with HNO₃/H<sub>2</sub>SO<sub>4</sub> to produce 2-nitro-terephthalic acid (NO₂-H₂TPA) in good yield. Both compounds were well characterized by NMR (<sup>1</sup>H; <sup>13</sup>C; <sup>1</sup>H–<sup>13</sup>C HSQC). These two molecules were used as ligands for the syntheses of two new cobalt-based metal–organic frameworks (MOFs) via solvothermal methodology, in dimethylformamide (DMF) or dimethylacetamide (DMA). The MOFs Co-TPA-DMA <b>(1)</b> and Co-(NO₂-TPA)-DMF <b>(2)</b> were obtained and characterized by single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD) and scanning electron microscopy with energy-dispersive spectroscopy (SEM–EDS).</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 1","pages":"115 - 125"},"PeriodicalIF":1.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, optical properties, and enhanced photocatalytic degradation of (Mg, Cu) co-doped TiO2 nanoparticles under ultraviolet light irradiation 紫外线照射下(镁、铜)共掺杂 TiO2 纳米粒子的合成、光学性质和增强的光催化降解能力
IF 1.6 4区 化学
Transition Metal Chemistry Pub Date : 2024-09-06 DOI: 10.1007/s11243-024-00605-7
H. Mansour, M. Madani, Fatemah M. Barakat, K. Omri, B. Bader Alyahya, F. Alharbi, S. Gouadria
{"title":"Synthesis, optical properties, and enhanced photocatalytic degradation of (Mg, Cu) co-doped TiO2 nanoparticles under ultraviolet light irradiation","authors":"H. Mansour,&nbsp;M. Madani,&nbsp;Fatemah M. Barakat,&nbsp;K. Omri,&nbsp;B. Bader Alyahya,&nbsp;F. Alharbi,&nbsp;S. Gouadria","doi":"10.1007/s11243-024-00605-7","DOIUrl":"10.1007/s11243-024-00605-7","url":null,"abstract":"<div><p>Co-precipitation method was used as a quick and effective way to elaborate the Mg and Cu co-doped TiO<sub>2</sub> (MgCu/T) nanoparticles. The formation of a single phase (<i>anatase</i>) with a tetragonal structure of nano-crystallized MgCu/T was confirmed by X-ray diffraction (<i>Card No. 89–4203</i>). Experimental results indicate that the synthesized MgCu/T nanoparticles are nanometric, ranging from 12 to 25 nm, consistent with the findings from SEM images. Additionally, the UV–Vis reflectance spectra showed that MgCu/T nanoparticles possess strong absorption properties in the UV–visible region. Hence, the photocatalytic activities showed that the 4 mol% Mg-doped MgCu/T nanoparticles exhibited the highest activity as a photocatalyst under ultraviolet light. The maximum degradation was found to be 58% for the sample 4 mol% Mg-doped MgCu/T nanoparticles after 210 min of UV light irradiation. The increase in AC conductivity of MgCu/T nanoparticles with higher Mg concentrations can be attributed to the fact that Mg doping introduces shallow donor states in TiO<sub>2</sub>. These states can more easily donate electrons to the conduction band, thus increasing the charge carrier concentration.</p></div>","PeriodicalId":803,"journal":{"name":"Transition Metal Chemistry","volume":"50 1","pages":"61 - 73"},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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