RSC AdvancesPub Date : 2025-04-01DOI: 10.1039/D4RA08613A
Jun Liu, Xiaobing Zhao, Weichen Wang, Youjun Yan, Guofu Huang, Meng Liang, Xinzhen Feng and Weijie Ji
{"title":"Acrolein production from glycerol dehydration over amorphous V–P–N–C catalysts†","authors":"Jun Liu, Xiaobing Zhao, Weichen Wang, Youjun Yan, Guofu Huang, Meng Liang, Xinzhen Feng and Weijie Ji","doi":"10.1039/D4RA08613A","DOIUrl":"https://doi.org/10.1039/D4RA08613A","url":null,"abstract":"<p >Amorphous catalysts exhibit a plethora of oxygen vacancies, electron-rich active sites, and highly dispersed active centers, thereby yielding exceptional catalytic performance for multiple reactions. In this work, a series of amorphous V–P–N–C catalysts were synthesized using complexants and employed for catalyzing the glycerol dehydration reaction towards acrolein. Under optimized reaction conditions, the glycerol conversion reached 99.1% with an acrolein selectivity of 83.2% over the amorphous catalyst VPOC<small><sub>6</sub></small>. The comprehensive characterization results of Raman, XPS, H<small><sub>2</sub></small>-TPR, SEM, BET, and NH<small><sub>3</sub></small>-TPD, demonstrated that the addition and decomposition of 1,6-diaminohexane leads to a transition from crystalline to amorphous state while preserving the fundamental vanadium–phosphorus oxide phases. It results in an active graphite-type nitrogen structure and an abundance of oxygen vacancies, which promote the target reaction by virtue of numerous medium acid sites on the catalyst surface.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9801-9809"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08613a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-04-01DOI: 10.1039/D4RA08508F
Em Canh Pham, Bich-Ngoc Thi Le, Anh Minh Ngo, Long Binh Vong and Tuyen Ngoc Truong
{"title":"Symmetrical di-substituted phenylamino-s-triazine derivatives as anticancer agents: in vitro and in silico approach†","authors":"Em Canh Pham, Bich-Ngoc Thi Le, Anh Minh Ngo, Long Binh Vong and Tuyen Ngoc Truong","doi":"10.1039/D4RA08508F","DOIUrl":"https://doi.org/10.1039/D4RA08508F","url":null,"abstract":"<p >A series of symmetrical tri-substituted <em>s</em>-triazine derivatives were designed and synthesized by two different methods (reflux and microwave-assisted methods). The structures of compounds were determined by infrared (IR), nuclear magnetic resonance (<small><sup>1</sup></small>H NMR and <small><sup>13</sup></small>C NMR), and mass spectrometry. The yield of the microwave-assisted method (91–98%) was significantly higher (about 10%) than that of the reflux method (80–88%) meanwhile the reaction time was significantly shorter (15–30 min). Compound <strong>3b</strong> showed good cytotoxic activity against the MCF7 (human breast cancer) cell line with an IC<small><sub>50</sub></small> value of 6.19 μM. Compounds <strong>3a</strong> and <strong>2e</strong> showed strong cytotoxic activity against the C26 (colon carcinoma) cell line with IC<small><sub>50</sub></small> values of 1.21 and 8.28 μM, respectively. Compound <strong>3e</strong> showed good cytotoxic activity against both MCF7 and C26 cell lines with IC<small><sub>50</sub></small> values of 13.74, and 14.66 μM respectively. In particular, compound <strong>2d</strong> exhibited the best potent cytotoxic activity among the synthesized compounds against both MCF7 and C26 cell lines with IC<small><sub>50</sub></small> values of 6.54 and 0.38 μM, respectively. Moreover, compounds <strong>2e</strong>, <strong>3a</strong>, and <strong>3e</strong> showed higher selectivity on cancer cell lines and lower toxicity on BAEC (bovine aorta endothelial) normal cells compared to compounds <strong>2d</strong>, <strong>3a</strong>, paclitaxel, and doxorubicin. <em>In silico</em> studies revealed five potent compounds with good physicochemical and ADMET profiles and potent interactions with key anticancer targets (EGFR, DHFR, VEGFR2, CDK2, mTOR, and PI3K) compared to reference drugs. This work paved the way for the synthesis of more potent compounds based on the phenylamino-<em>s</em>-triazine scaffold and the exploration of their diverse and potential biological activities as well as their mechanisms of action.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9968-9984"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08508f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D4RA08760G
Zhi Dai, Bingrong Wang, Weiwei Li, Yufan Wu, Bingdong Yan and Kexi Zhang
{"title":"Synergistic effects of fluorine doping on CoPS electrocatalysts for highly efficient hydrogen evolution reaction†","authors":"Zhi Dai, Bingrong Wang, Weiwei Li, Yufan Wu, Bingdong Yan and Kexi Zhang","doi":"10.1039/D4RA08760G","DOIUrl":"https://doi.org/10.1039/D4RA08760G","url":null,"abstract":"<p >Exploring earth-abundant electrocatalysts for efficient hydrogen evolution reaction (HER) is important for the development of clean and renewable hydrogen energy. Herein, we demonstrated that fluorine anion doping into CoPS significantly enhanced its hydrogen evolution reaction (HER) activity. Controlled fluorination modulated the surface electronic structure of CoPS active sites, forming an optimized F-CoPS electrocatalyst that exhibited superior performance, achieving an overpotential of only 74 mV at 10 mA cm<small><sup>−2</sup></small> and 141 mV at 50 mA cm<small><sup>−2</sup></small>, along with remarkable stability over 50 hours. This study provides a novel and feasible approach to enhance the HER performance of ternary pyrite-type transition-metal phosphosulfides.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9756-9762"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08760g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D5RA00370A
Muhammad Faizan Masoud, Sajid Butt, Muhammad Waseem Akram, Nimra Naeem, Awais Irfan, Aumber Abbas and Syed Irfan
{"title":"Improved thermoelectric properties of α-phase Cu2Se thin films through multiphase nanostructuring","authors":"Muhammad Faizan Masoud, Sajid Butt, Muhammad Waseem Akram, Nimra Naeem, Awais Irfan, Aumber Abbas and Syed Irfan","doi":"10.1039/D5RA00370A","DOIUrl":"https://doi.org/10.1039/D5RA00370A","url":null,"abstract":"<p >Copper selenide (Cu<small><sub>2</sub></small>Se) has been extensively studied due to its promising thermoelectric properties in bulk form. However, the miniaturization of thermoelectric devices using thin films is highly desired for smart applications. To date, there are few reports on composite thin films of Cu<small><sub>2</sub></small>Se for thermoelectric applications, primarily due to their lower conversion efficiency. In the present work, Cu<small><sub>2</sub></small>Se-based multiphase nanocomposites are presented to demonstrate enhanced conversion efficiency. The detailed structural characterization reveals that thermally evaporated Te-doped Cu<small><sub>2</sub></small>Se thin films have multiphase compositions. The electrical conductivity decreases after Te-doping, due to enormous scattering of carriers against secondary phases and lattice defects. However, upon further increasing Te-doping concentration, both the electrical conductivity and Seebeck coefficient start increasing simultaneously, due to the formation of Cu<small><sub>2</sub></small>Te nanoclusters and Te–Se solid solution, in the matrix of Cu<small><sub>2</sub></small>Se. We emphasize the power factor, with the highest value reaching 234.0 μW mK<small><sup>−2</sup></small> at 400 K, as a key indicator of thermoelectric performance. A slightly overestimated value of dimensionless figure-of-merit (<em>ZT</em>) of 0.2 was obtained using the power factor and merely the electronic part of the thermal conductivity. The current synthesis route synergizes the effects of a multiphase system in thin film research to enhance the thermoelectric efficiency of Cu<small><sub>2</sub></small>Se and related materials classes.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9854-9863"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00370a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D4RA08037H
Mohd Muslim, Sultan, Liyaqat Ali Kamran, Basree, Amit Kumar Pradhan, Mohammad Jane Alam, S. M. Afzal, Musheer Ahmad and Mohd Afzal
{"title":"Exploring superior nonlinear optical properties of copper complexes with π-conjugated ligands: experimental and theoretical investigation†","authors":"Mohd Muslim, Sultan, Liyaqat Ali Kamran, Basree, Amit Kumar Pradhan, Mohammad Jane Alam, S. M. Afzal, Musheer Ahmad and Mohd Afzal","doi":"10.1039/D4RA08037H","DOIUrl":"https://doi.org/10.1039/D4RA08037H","url":null,"abstract":"<p >This study explores the nonlinear optical (NLO) properties of two synthesized copper complexes, {[Cu(dmp)<small><sub>2</sub></small>(H<small><sub>2</sub></small>O)]·(PA)<small><sub>2</sub></small>} (complex 1) and {[Cu(dmp)<small><sub>2</sub></small>]·(PA)} (complex 2), where dmp represents 2,9-dimethyl-1,10-phenanthroline (neocuproine) and PA refers to picric acid. Employing both experimental and theoretical approaches, we comprehensively analyzed their NLO properties. Experimentally, third-order NLO parameters were determined using the Z-scan technique with a 520 nm continuous-wave diode laser, yielding values of nonlinear refractive index (<em>n</em><small><sub>2</sub></small>), nonlinear absorption coefficient (<em>β</em>), and third-order nonlinear optical susceptibility (<em>χ</em><small><sup>(3)</sup></small>) on the order of 10<small><sup>−7</sup></small> cm<small><sup>2</sup></small> W<small><sup>−1</sup></small>, 10<small><sup>−3</sup></small> cm W<small><sup>−1</sup></small>, and 10<small><sup>−6</sup></small> esu, respectively. These findings underscore their significant optical nonlinearity and suitability for intensity-dependent NLO applications, as evidenced by their high values of negative refractive index. Density Functional Theory (DFT) investigations were performed at the M062X/(6-31G(d,p)/LanL2DZ)) level to evaluate key reactivity descriptors, including polarizability, hyperpolarizability, and dipole moment, which align with the experimental results. Conceptual DFT analysis reveals that complex 1 is more stable, while complex 2 exhibits higher reactivity. The strong hyperpolarizability and remarkable third-order NLO properties of these copper complexes demonstrate their potential for advanced photonic and optoelectronic applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 6","pages":" 4657-4668"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08037h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D4RA08334B
Syed Ali Raza, Ghulam M. Mustafa, M. Adil Ameer, N. A. Noor, Zahid Farooq, Sohail Mumtaz and Ihab Mohamed Moussa
{"title":"Investigation of MnSc2X4 (X = S, Se) spinels to unveil their potential for optoelectronic and thermoelectric applications","authors":"Syed Ali Raza, Ghulam M. Mustafa, M. Adil Ameer, N. A. Noor, Zahid Farooq, Sohail Mumtaz and Ihab Mohamed Moussa","doi":"10.1039/D4RA08334B","DOIUrl":"https://doi.org/10.1039/D4RA08334B","url":null,"abstract":"<p >To advance the fields of optoelectronics and thermoelectrics, the demand for developing novel materials with exceptional optoelectronic and thermoelectric characteristics has greatly increased. In this respect, spinels are among the well-researched materials in the scientific community. The present study examines the mechanical, optoelectronic, magnetic, and thermoelectric characteristics of MnSc<small><sub>2</sub></small>X<small><sub>4</sub></small> (X = S, Se), utilizing the WIEN2k and BoltzTrap code. The investigated materials exhibit cubic structures with the <em>Fd</em><img><em>m</em> space group and lattice parameters of 10.44 and 10.94 Å for S- and Se-based compositions, respectively. Fulfillment of the Born stability criteria attest to the mechanical stability, while negative formation energies validate the thermodynamic stability of the spinels. The spin-polarized electronic band structure (EBS) and the density of states (DOS) reveal the semiconducting nature of the materials with direct bandgap (<em>E</em><small><sub>g</sub></small>). In the optical parameters, MnSc<small><sub>2</sub></small>S<small><sub>4</sub></small> and MnSc<small><sub>2</sub></small>Se<small><sub>4</sub></small> show a static dielectric constant of 6.5 and 8.5, respectively. The materials exhibit wide absorption spectra, ranging from visible to ultraviolet (UV) regions, with the highest absorption in the UV region. The spin-dependent volume optimization demonstrates the ferromagnetic (FM) nature of the materials. The presence of Mn ions in the compositions imparts this magnetic nature to them, which is analyzed by its high local magnetic moment. Lastly, the transport characteristics are analyzed against the increasing temperature in the range of 300–800 K. These materials exhibit high Seebeck coefficients of 242 to 251 μV K<small><sup>−1</sup></small>, and their electrical and thermal conductivities increase with temperature. The figure of merit <em>ZT</em> showed an almost constant value at varying temperatures. The outcomes of this study demonstrate the investigated materials as potential candidates for optoelectronic and thermoelectric applications.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9662-9675"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08334b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D4RA07976K
Ayda Yari-Ilkhchi, Nazila Hamidi, Mehrdad Mahkam and Abbas Ebrahimi-Kalan
{"title":"Graphene-based materials: an innovative approach for neural regeneration and spinal cord injury repair","authors":"Ayda Yari-Ilkhchi, Nazila Hamidi, Mehrdad Mahkam and Abbas Ebrahimi-Kalan","doi":"10.1039/D4RA07976K","DOIUrl":"https://doi.org/10.1039/D4RA07976K","url":null,"abstract":"<p >Spinal cord injury (SCI), the most serious disease affecting the central nervous system (CNS), is one of contemporary medicine's most difficult challenges, causing patients to suffer physically, emotionally, and socially. However, due to recent advances in medical science and biomaterials, graphene-based materials (GBMs) have tremendous potential in SCI therapy due to their wonderful and valuable properties, such as physicochemical properties, extraordinary electrical conductivity, distinct morphology, and high mechanical strength. This review discusses SCI pathology and GBM characteristics, as well as recent <em>in vitro</em> and <em>in vivo</em> findings on graphenic scaffolds, electrodes, and injectable achievements for SCI improvement using neuroprotective and neuroregenerative techniques to improve neural structural and functional repair. Additionally, it suggests possible ideas and desirable products for graphene-based technological advances, intending to reach therapeutic importance for SCI.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9829-9853"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07976k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D4RA08354G
Phetluengxay Keo, Tingyi Yan, Jinwen Wang, Xiujuan Zhang, Yandi Shi and Jiansheng Jie
{"title":"Anchored epitaxial growth of single-oriented one-dimensional organic nanowires towards their integration into field-effect transistors and polarization-sensitive photodetector arrays†","authors":"Phetluengxay Keo, Tingyi Yan, Jinwen Wang, Xiujuan Zhang, Yandi Shi and Jiansheng Jie","doi":"10.1039/D4RA08354G","DOIUrl":"https://doi.org/10.1039/D4RA08354G","url":null,"abstract":"<p >The deliberate assembly of organic small molecules into single-oriented one-dimensional (1D) nanowires is essential for the large-scale, on-chip integration of organic nanowire-based (opto)electronic devices. However, achieving single-oriented 1D organic nanowires remains a considerable challenge, predominantly attributed to the intricate nucleation and growth behaviors of the molecules. Herein, an anchored epitaxial growth method was developed to facilitate the single-oriented growth of 1D organic nanowires using the parallel nanogrooves on the annealed sapphire as anchoring seed crystal templates. The depth of the nanogrooves was greater than the length of the molecules, enabling the molecules to be embedded into the V-shaped nanogrooves and to form anchored nuclei during the physical vapor deposition process. Subsequently, these nuclei exhibited directional epitaxial growth along the nanogrooves, resulting in the formation of single-oriented 1D organic nanowires. Various organic small molecule 1D nanowires with uniform molecular packing and orientation were obtained and utilized for subsequent device integration. 2,7-Dioctyl[1]benzothiophene (C8-BTBT) was used as a model material, and the flexible organic field-effect transistor (OFET) based on the single C8-BTBT nanowire exhibited a mobility of up to 1.5 cm<small><sup>2</sup></small> V<small><sup>−1</sup></small> s<small><sup>−1</sup></small>. Benefiting from high mobility and uniform orientation, the integrated polarization-sensitive photodetector arrays based on 1D C8-BTBT nanowires exhibited a high dichroic ratio of up to 2.83, which was higher than those of some previously investigated 1D nanowires and two-dimensional materials. This work presents new opportunities to fabricate single-oriented 1D organic nanowires for integrated devices.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9891-9898"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08354g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D5RA90031J
M. M. Shahidi, M. Akbari, M. Mehrabani, A. Shams Khameneh, G. G. Welegergs, M. Aligholami and M. Maaza
{"title":"Correction: Green synthesis of Cu2S using garlic-derived sulfur: structural, morphological, optical, electrical, and photoresponse characterization with potential for thermoelectric applications","authors":"M. M. Shahidi, M. Akbari, M. Mehrabani, A. Shams Khameneh, G. G. Welegergs, M. Aligholami and M. Maaza","doi":"10.1039/D5RA90031J","DOIUrl":"https://doi.org/10.1039/D5RA90031J","url":null,"abstract":"<p >Correction for ‘Green synthesis of Cu<small><sub>2</sub></small>S using garlic-derived sulfur: structural, morphological, optical, electrical, and photoresponse characterization with potential for thermoelectric applications’ by M. M. Shahidi <em>et al.</em>, <em>RSC Adv.</em>, 2025, <strong>15</strong>, 3406–3415, https://doi.org/10.1039/D4RA07771G.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9828-9828"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra90031j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RSC AdvancesPub Date : 2025-03-31DOI: 10.1039/D5RA00815H
Filip Kolesar, Cécile Marie, Laurence Berthon, Karen Van Hecke, Ken Verguts, Thomas Cardinaels and Koen Binnemans
{"title":"Extraction and speciation studies of new diglycolamides for selective recovery of americium by solvent extraction†","authors":"Filip Kolesar, Cécile Marie, Laurence Berthon, Karen Van Hecke, Ken Verguts, Thomas Cardinaels and Koen Binnemans","doi":"10.1039/D5RA00815H","DOIUrl":"https://doi.org/10.1039/D5RA00815H","url":null,"abstract":"<p >Much research has gone into the development of extraction processes capable of separating minor actinides from highly active raffinates generated by the PUREX process. In particular, the separation of americium from curium remains challenging because of the similarity of their chemical properties. A new class of diglycolamide extractants called “unsymmetrical” diglycolamides (UDGAs), which contain at least two different alkyl chains, have recently been shown to have potential for improving the Am/Cm selectivity. However, the influence of the alkyl chains on the extraction efficiency and selectivity, and the formed complexes are not fully understood yet. For this purpose, using the AmSel system as reference, six UDGAs were studied by performing both extraction experiments and speciation studies, and compared to the benchmark extractant TODGA. The tested UDGAs all contain two dodecyl chains on one of the amide nitrogen atoms, and either two <em>n</em>-propyl, isopropyl, <em>n</em>-butyl, isobutyl, or <em>n</em>-pentyl chains, or a piperidine group on the opposing nitrogen atom. The results show that all of the tested UDGAs have equal or higher distribution ratios than TODGA, with the isopropyl derivative showing the most efficient extraction of Ln(<small>III</small>) and An(<small>III</small>). Selectivity for curium over americium was equal or higher in comparison with TODGA, with isopropyl and piperidine giving the highest separation factors, followed by pentyl, and the remaining UDGAs showing similar selectivity to TODGA. Speciation experiments of the complexes formed in the organic phase with neodymium were performed using FTIR, ESI-MS, and UV-vis spectrometry. This revealed very similar spectra for all of the diglycolamides, indicating no difference in the extraction mechanism.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9864-9874"},"PeriodicalIF":3.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00815h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}