New Journal of Chemistry最新文献

筛选
英文 中文
K-g-C3N4@PDA nanozyme for the colorimetric detection of ferric ammonium citrate in edible salt K-g-C3N4@PDA用于食用盐中柠檬酸铁铵比色检测的纳米酶
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-20 DOI: 10.1039/D5NJ02041G
Limei Yang, Ye Liu, Rongxue Wang, Linqian Hou and Yaling Yang
{"title":"K-g-C3N4@PDA nanozyme for the colorimetric detection of ferric ammonium citrate in edible salt","authors":"Limei Yang, Ye Liu, Rongxue Wang, Linqian Hou and Yaling Yang","doi":"10.1039/D5NJ02041G","DOIUrl":"https://doi.org/10.1039/D5NJ02041G","url":null,"abstract":"<p >A K-doped carboxylated polydopamine (PDA) modification of the g-C<small><sub>3</sub></small>N<small><sub>4</sub></small> (K-g-C<small><sub>3</sub></small>N<small><sub>4</sub></small>@PDA) nanozyme was effectively performed by one-step potassium salt-assisted thermal copolymerization and hydrothermal strategies. K-g-C<small><sub>3</sub></small>N<small><sub>4</sub></small>@PDA showed excellent peroxidase (POD)-like activity, and ferric ammonium citrate (FAC) efficiently promoted the generation of hydroxyl radicals (˙OH). Furthermore, K-g-C<small><sub>3</sub></small>N<small><sub>4</sub></small>@PDA oxidized 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in the presence of H<small><sub>2</sub></small>O<small><sub>2</sub></small> to produce a blue-green product, and FAC boosted the POD-like activity with an exceptional linear relationship and low detection limit (0.018 μg mL<small><sup>−1</sup></small>). Importantly, a recovery rate of 94.09–105.17% was attained when the developed method was effectively used to assess FAC in culinary salt samples using a spiking procedure.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15360-15367"},"PeriodicalIF":2.5,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Reduction of CO2 to methane, paraffins (C2–C4) and light olefins (C=2–C=4) over a bimetallic Fe–Co–MgO catalyst 在双金属Fe-Co-MgO催化剂上,CO2还原为甲烷、石蜡(C2-C4)和轻烯烃(C= 2-C =4)
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02473K
Mahendra Kumar Meena and Prakash Biswas
{"title":"Reduction of CO2 to methane, paraffins (C2–C4) and light olefins (C=2–C=4) over a bimetallic Fe–Co–MgO catalyst","authors":"Mahendra Kumar Meena and Prakash Biswas","doi":"10.1039/D5NJ02473K","DOIUrl":"https://doi.org/10.1039/D5NJ02473K","url":null,"abstract":"<p >A bimetallic Fe–Co catalyst supported on MgO was synthesized by the co-precipitation method for selective CO<small><sub>2</sub></small> hydrogenation to C<small><sub>2</sub></small>–C<small><sub>4</sub></small> hydrocarbons. The effect of temperature (280–430 °C), pressure (15–25 bar), and the H<small><sub>2</sub></small>/CO<small><sub>2</sub></small> ratio was evaluated in a packed bed reactor. The catalysts were characterized by various techniques, and the physicochemical characteristics were correlated with the catalytic activity data of the fresh and spent catalysts, respectively. The experimental results suggested that the 15Fe5CoMgO catalyst was very active and selective to hydrocarbons (methane and paraffins). The higher activity of this catalyst was due to high metal dispersion, moderate basicity, and the formation of iron carbide. The maximum CO<small><sub>2</sub></small> conversion of ∼38% was achieved with a total hydrocarbon selectivity of ∼84% at 400 °C and 25 bar pressure. The interaction between Fe and Co significantly affected the CO<small><sub>2</sub></small> methanation, CO formation <em>via</em> reverse water gas-shift reaction (RWGS), and C–C coupling. The formation of an Fe–Co bimetallic alloy facilitated the C–C coupling and the formation of paraffin hydrocarbons. The times-on-stream study suggested that the catalyst was stable and selective for more than 100 h without any significant coke deposition. The spent catalyst characterization results showed that the formation of a new Fe<small><sub>2</sub></small>O<small><sub>3</sub></small> phase provided the required stability of the catalyst.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15272-15286"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
A high-performance Na0.8Li0.2Mn0.75Zn0.05O2 cathode material synthesized via the sol–gel method for sodium-ion battery applications 溶胶凝胶法制备了一种用于钠离子电池的高性能Na0.8Li0.2Mn0.75Zn0.05O2正极材料
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02382C
Nguyen Van Ky, Doan Tien Phat, Nguyen To Van, Phung Dinh Hoat, Vu Dinh Thao, Ngo Quy Quyen, Vu Dinh Lam and Nguyen Van Nghia
{"title":"A high-performance Na0.8Li0.2Mn0.75Zn0.05O2 cathode material synthesized via the sol–gel method for sodium-ion battery applications","authors":"Nguyen Van Ky, Doan Tien Phat, Nguyen To Van, Phung Dinh Hoat, Vu Dinh Thao, Ngo Quy Quyen, Vu Dinh Lam and Nguyen Van Nghia","doi":"10.1039/D5NJ02382C","DOIUrl":"https://doi.org/10.1039/D5NJ02382C","url":null,"abstract":"<p >This work presents research findings on a novel layered-structure Na<small><sub>0.8</sub></small>Li<small><sub>0.2</sub></small>Mn<small><sub>0.75</sub></small>Zn<small><sub>0.05</sub></small>O<small><sub>2</sub></small> material, which was successfully synthesized using the sol–gel method combined with high-temperature calcination. The synthesized materials were analyzed to assess their structural and morphological characteristics and electrochemical properties. The Na<small><sub>0.8</sub></small>Li<small><sub>0.2</sub></small>Mn<small><sub>0.75</sub></small>Zn<small><sub>0.05</sub></small>O<small><sub>2</sub></small> material has a P2-type layered structure and a superior specific capacity of 174 mAh g<small><sup>−1</sup></small> at a current density of 15 mA g<small><sup>−1</sup></small> in the potential range of 1.5 to 4 V. Its capacity and coulombic efficiency after 100 testing cycles at a rate of 15 mA g<small><sup>−1</sup></small> remained at 77% and 95%, respectively. The Na<small><sub>0.8</sub></small>Li<small><sub>0.2</sub></small>Mn<small><sub>0.75</sub></small>Zn<small><sub>0.05</sub></small>O<small><sub>2</sub></small> material also exhibited excellent rate capability, maintaining a discharge capacity of over 90 mAh g<small><sup>−1</sup></small> at a rate of 100 mA g<small><sup>−1</sup></small>. These findings indicate that the Na<small><sub>0.8</sub></small>Li<small><sub>0.2</sub></small>Mn<small><sub>0.75</sub></small>Zn<small><sub>0.05</sub></small>O<small><sub>2</sub></small> material is a promising cathode material for sodium-ion batteries.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15252-15263"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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, antiproliferative activity, ADMET, molecular docking, molecular dynamics simulation, and DFT study for coumarin-based 1,5-benzothiazepines 基于香豆素的1,5-苯并噻唑类药物的合成、抗增殖活性、ADMET、分子对接、分子动力学模拟和DFT研究
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D4NJ05437G
Duong Ngoc Toan, Dinh Thuy Van and Nguyen Dinh Thanh
{"title":"Synthesis, antiproliferative activity, ADMET, molecular docking, molecular dynamics simulation, and DFT study for coumarin-based 1,5-benzothiazepines","authors":"Duong Ngoc Toan, Dinh Thuy Van and Nguyen Dinh Thanh","doi":"10.1039/D4NJ05437G","DOIUrl":"https://doi.org/10.1039/D4NJ05437G","url":null,"abstract":"<p >Some α,β-unsaturated ketones <strong>5a–h</strong> were prepared from 3-acetyl-4-hydroxycoumarin and (hetero)aromatic aldehydes with yields of 58–62%. These ketones were converted into novel coumarin–benzothiazepine hybrid compounds <strong>6a–h</strong> by their reaction with <em>o</em>-aminothiophenol in the presence of glacial acetic acid as the catalyst with yields of 62–82%. All the synthesized compounds <strong>6a–h</strong> were screened for their <em>in vitro</em> anticancer activity against human squamous cell carcinoma KB and hepatocellular carcinoma HepG2 cancer lines. Compound <strong>6h</strong> exhibited the most potent inhibitory activity in this series, with the corresponding IC<small><sub>50</sub></small> values of 4.0 and 6.25 μM for KB and HepG2 cell lines. The cytotoxicity assay on WI-38 cells showed that the most active compounds, <strong>6b</strong>, <strong>6d</strong>, <strong>6f</strong>, and <strong>6h</strong>, had the low cytotoxicity, and of these compounds, compound <strong>6h</strong> exhibited the lowest toxicity. ADMET properties indicated that compound <strong>6h</strong> had drug-like behaviour. The molecular docking results for the most active compounds <strong>6b</strong>, <strong>6d</strong>, <strong>6f</strong>, and <strong>6h</strong> indicated the active interactions between each ligand and the residues in the binding pocket of enzyme 1Z5M. The molecular (MD) dynamics simulation applied for compound <strong>6h</strong> showed the interactions of this ligand with residues LEU88, ALA109, GLU166, LYS111, and LEU212 in the active pocket of 1Z5M during 200 ns MD simulations. Furthermore, the electronic characteristics of the most active compounds <strong>6b</strong>, <strong>6d</strong>, <strong>6f</strong>, and <strong>6h</strong> were investigated by using a density functional theory (DFT) method at the B3LYP/6-311++G(d,p) basis level. The frontier molecular orbital (FMO) energy and atomic net charges were examined.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16397-16414"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Selective oxidative cleavage of epoxides to aldehydes by chitin quaternary ammonium phosphotungstate as a recycle catalyst 几丁质季铵盐磷钨酸盐催化环氧化合物选择性氧化裂解生成醛
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02656C
Tengfei Niu, Xile Xia, Ziyi Wei, Xiao Yu and Zhongjian Tian
{"title":"Selective oxidative cleavage of epoxides to aldehydes by chitin quaternary ammonium phosphotungstate as a recycle catalyst","authors":"Tengfei Niu, Xile Xia, Ziyi Wei, Xiao Yu and Zhongjian Tian","doi":"10.1039/D5NJ02656C","DOIUrl":"https://doi.org/10.1039/D5NJ02656C","url":null,"abstract":"<p >The selective cleavage oxidation of epoxide represents a promising strategy for generating value-added chemicals such as aldehyde compounds. However, due to the fast oxidation kinetics of aldehydes, developing a catalytic process with high selectivity remains a challenge. In this work, a chitin quaternary ammonium-composite phosphotungstate catalyst HPW-CT-QAS<small><sub>16</sub></small> has been prepared and found to show remarkable catalytic activity for the selective oxidative cleavage of epoxide using H<small><sub>2</sub></small>O<small><sub>2</sub></small> as the oxidant. Both alkyl epoxide and aromatic epoxide and natural methyl 9,10-epoxystearate can participate well in the reaction affording 100% conversion and up to 97.5% aldehyde selectivity. More importantly, the chitin-based catalyst could be easily recovered and reused at least 5 times without any significant loss in its catalytic activity. These characteristics make the selective oxidative cleavage of epoxide more efficient and environmentally friendly, which may be beneficial for industrial applications.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16180-16186"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
α-Cyanostilbene-modified 1,8-naphthalimide dye with long wavelength emission: synthesis, characterization, self-absorption + ESIPT, and controllable and reversible solid fluorescence 长波发射α-氰二苯乙烯改性1,8-萘酰亚胺染料:合成、表征、自吸收+ ESIPT、可控可逆固体荧光
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ01798J
Mingguang Zhu, Jiali Hu, Xinyu Ye, Yuting Zhang, Jinghui Zeng, Lihui Yang, Yuanbin Wu, Meihui Chen, Donghong Xie, Yue Yu and Yaohui You
{"title":"α-Cyanostilbene-modified 1,8-naphthalimide dye with long wavelength emission: synthesis, characterization, self-absorption + ESIPT, and controllable and reversible solid fluorescence","authors":"Mingguang Zhu, Jiali Hu, Xinyu Ye, Yuting Zhang, Jinghui Zeng, Lihui Yang, Yuanbin Wu, Meihui Chen, Donghong Xie, Yue Yu and Yaohui You","doi":"10.1039/D5NJ01798J","DOIUrl":"https://doi.org/10.1039/D5NJ01798J","url":null,"abstract":"<p >The development of 1,8-naphthalimides (NPIs) with tunable and controllable solid fluorescence has received unprecedented attention in many fields. Herein, we report the design, synthesis, and optical behaviors of a novel α-cyanostilbene-modified 1,8-naphthalimide dye constructed from the Schiff base condensation reaction between the salicylaldehyde-analogue α-cyanostilbene luminogen and the NPI derivative obtained through the selective imidization of 1,8-naphthalic anhydride with 3-aminobenzylamine. Its well-defined structure was confirmed by FT-IR, HR-ESI-MS, and <small><sup>1</sup></small>H/<small><sup>13</sup></small>C NMR spectroscopies. In the solution state, the steady-state absorption and emission results revealed that the self-absorption between the NPI core and α-cyanostilbene group occurred when the NPI core was excited (under the excitation at 340 nm), accompanied by the ESIPT process of the α-cyanostilbene unit because the α-cyanostilbene unit was excited after self-absorption. Although it did not exhibit particularly remarkable aggregation-induced emission (AIE) features in THF/water solvent mixtures as the water content was increased, it showed controllable and reversible solid fluorescence. In particular, its crystallization in EtOH solvent at room temperature afforded an orange solid in natural light, emitting bright red fluorescence under UV<small><sub>365 nm</sub></small> illumination. However, crystallization in an EtOH/H<small><sub>2</sub></small>O mixture (1 : 1, v/v) at room temperature afforded a yellow solid in natural light, emitting dull red fluorescence under UV<small><sub>365 nm</sub></small> illumination. Switching of the emission colors between bright red and dull red was highly reversible by crystallizing it in EtOH and EtOH/H<small><sub>2</sub></small>O (1 : 1, v/v), respectively. Furthermore, the solid obtained by crystallization in EtOH displayed reversible acid/base stimuli-responsive fluorescence. This work provides a strategy for constructing controllable and reversible NPI-based fluorescent materials.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 35","pages":" 15298-15307"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Preparation and characterization of rose bengal modified chitosan/polyethylene oxide nanocomposite membranes with photodynamic antimicrobial properties 具有光动力抗菌性能的壳聚糖/聚氧化物纳米复合膜的制备与表征
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02253C
Ming Huang, Yingfeng Wang, Yuhan Zhu, Maoli Yin, Zhipeng Ma and XiaoJuan Li
{"title":"Preparation and characterization of rose bengal modified chitosan/polyethylene oxide nanocomposite membranes with photodynamic antimicrobial properties","authors":"Ming Huang, Yingfeng Wang, Yuhan Zhu, Maoli Yin, Zhipeng Ma and XiaoJuan Li","doi":"10.1039/D5NJ02253C","DOIUrl":"https://doi.org/10.1039/D5NJ02253C","url":null,"abstract":"<p >To address the challenge of antibiotic resistance and cross-infection from microorganisms, chitosan (CS) was covalently bound with rose bengal (RB) and blended with polyethylene oxide (PEO) to prepare nanofiber membranes with good antibacterial properties. Morphological and structural characteristics confirmed the successful integration of RB-modified CS (CS-RB) without compromising the fiber morphology or stability of PEO/CS-RB nanofiber membranes. FT-IR and TG analyses were employed to characterize the chemical structure and thermal stability of PEO-based membranes. Under visible light irradiation, PEO/CS-RB nanofiber membranes efficiently generated reactive oxygen species (ROS), enabling rapid inactivation of all <em>Escherichia coli</em> (<em>E. coli</em>), <em>Staphylococcus aureus</em> (<em>S. aureus</em>) and <em>Candida albicans</em> (<em>C. albicans</em>) within 30 min. The PEO-based membranes exhibited well-balanced hydrophilicity and water stability, along with low hemolytic activity, indicating good biocompatibility. This strategy creates PEO-based membrane materials that exhibit good biocompatibility, hydrophilicity, and photodynamic antibacterial properties, making them suitable for use in the biomedical and healthcare fields.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16288-16294"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Substituent effect on the solvatochromic behaviour of benzoimidazole based donor–acceptor type fluorescent molecules 取代基对苯并咪唑基给受体型荧光分子溶剂致变色行为的影响
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02580J
Souvik Santra and Nikhil Guchhait
{"title":"Substituent effect on the solvatochromic behaviour of benzoimidazole based donor–acceptor type fluorescent molecules","authors":"Souvik Santra and Nikhil Guchhait","doi":"10.1039/D5NJ02580J","DOIUrl":"https://doi.org/10.1039/D5NJ02580J","url":null,"abstract":"<p >In this study, a series of donor–acceptor type fluorescent molecules were synthesised and their photophysical properties were investigated spectroscopically. The molecules were 4-(1<em>H</em>-benzo[<em>d</em>]imidazol-2-yl)-<em>N</em>,<em>N</em>-diphenylaniline [<strong>BIDP</strong>], 4-(benzo[<em>d</em>]oxazol-2-yl)-<em>N</em>,<em>N</em>-diphenylaniline [<strong>BODP</strong>] and 4-(benzo[<em>d</em>]thiazol-2-yl)-<em>N</em>,<em>N</em>-diphenylaniline [<strong>BTDP</strong>] where the diphenyl amine fragment acts as the donor and a class of heterocyclic groups such as benzoimidazole, benzoxazole, and benzothiazole act as the acceptor. It is found that the photophysical properties of the benzoimidazole based molecule <strong>BIDP</strong> are different, where increasing polarity of the medium results in less Stokes shift of the emission band as compared to the other two. This effect is reflected on the CIE 1931 diagram of these molecules, where <strong>BIDP</strong> shows a reduced solvatochromic effect compared to the other two. This anomalous behaviour is justified by the lowest change in the dipole moment of <strong>BIDP</strong> on moving from the ground to the excited state, which results in the reduction of the solvatochromic effect. Structurally back donation of charge from the benzoimidazole fragment to the benzene ring may prevent facile charge transfer from the donor diphenylamine part. Judiciously designed molecules with substitution of a 1<em>H</em>-imidazole atom in <strong>BIDP</strong> with a weakly electron-donating methyl group and a strongly electron-withdrawing <em>tert</em>-butyloxycarbonyl group showed a significant change in the photophysical properties. These new molecules upon substitution will give new insights about the charge transfer reaction of heterocycle-based donor–acceptor type molecules in the excited state.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 37","pages":" 16256-16270"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Synergistic catalysis: Ce(iv)-driven oxidation reactions facilitated by micellar composites 协同催化:胶束复合材料促进了由Ce(iv)驱动的氧化反应
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ02761F
Sandip Kundu, Priya Karmakar, Mousumi Layek, Prashanta Pal, Sk Mehebub Rahaman, Mahasweta Nandi, Pintu Sar and Bidyut Saha
{"title":"Synergistic catalysis: Ce(iv)-driven oxidation reactions facilitated by micellar composites","authors":"Sandip Kundu, Priya Karmakar, Mousumi Layek, Prashanta Pal, Sk Mehebub Rahaman, Mahasweta Nandi, Pintu Sar and Bidyut Saha","doi":"10.1039/D5NJ02761F","DOIUrl":"https://doi.org/10.1039/D5NJ02761F","url":null,"abstract":"<p >The catalytic behaviour of polymer–surfactant (PS) composites has attracted significant interest due to their ability to influence reaction kinetics through microenvironmental modulation. In this study, we explore the Ce(<small>IV</small>)-governed oxidative transformation of organic substrates in the presence of a polymer–surfactant composite composed of sodium dodecyl sulphate (SDS, 6 mM) and polyethylene glycol (PEG-600, 5 mM). Notably, the PS composite promotes the formation of premicellar aggregates at surfactant concentrations well below the critical micelle concentration (CMC), leading to enhanced reaction rates compared to systems involving the surfactant alone. The kinetics of the oxidation reaction were monitored <em>via</em> UV-Vis spectroscopy, revealing a pronounced rate enhancement attributed to the synergistic interaction between PEG-600 and SDS. The physicochemical characteristics and nature of the PS interaction were systematically investigated through tensiometry, dynamic light scattering (DLS), zeta potential measurements, nuclear magnetic resonance (NMR) spectroscopy, and field emission scanning electron microscopy (FESEM). These complementary techniques provide insight into the structural and dynamic aspects of the PS composites, elucidating their role in modulating the kinetics of the Ce(<small>IV</small>)-catalysed oxidation pathway. This study underscores the potential of polymer–surfactant systems as tunable platforms for catalytic applications in aqueous media.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 36","pages":" 15846-15857"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Preparation of black nano-titanium dioxide by a B2O3 sealed magnesium weak reduction method and kinetic analysis B2O3密封镁弱还原法制备黑色纳米二氧化钛及其动力学分析
IF 2.5 3区 化学
New Journal of Chemistry Pub Date : 2025-08-19 DOI: 10.1039/D5NJ01473E
Wenjing Peng, Jun Li, Peng Liu, Xiang Li, Enhui Wu, Xiaojing Tang, Jianzhong Tang, Jing Hou, Zhong Xu, Yuan Zhang, Bo Zhang and Shuzhong Chen
{"title":"Preparation of black nano-titanium dioxide by a B2O3 sealed magnesium weak reduction method and kinetic analysis","authors":"Wenjing Peng, Jun Li, Peng Liu, Xiang Li, Enhui Wu, Xiaojing Tang, Jianzhong Tang, Jing Hou, Zhong Xu, Yuan Zhang, Bo Zhang and Shuzhong Chen","doi":"10.1039/D5NJ01473E","DOIUrl":"https://doi.org/10.1039/D5NJ01473E","url":null,"abstract":"<p >In this paper, black titanium dioxide was prepared by surface weak reduction of white titanium dioxide and its non-isothermal kinetic analysis was conducted. Based on thermogravimetric experiments, there are at least three reactions (TiO<small><sub>2</sub></small> + Mg → TiO<small><sub>2</sub></small>@TiO<small><sub>2−<em>x</em></sub></small> + MgO; MgO + TiO<small><sub>2</sub></small> → MgTiO<small><sub>3</sub></small>; Mg + <em>x</em>TiO<small><sub>2</sub></small> → <em>x</em>TiO<small><sub>(2−1/<em>x</em>)</sub></small> + MgO) and one phase transition (Mg(s) → Mg(l)) during the heating process from room temperature to 900 °C. The whole process is caused by magnesium gradually taking away the oxygen in titanium dioxide and causing titanium dioxide to change from a disordered core–shell structure with surface oxygen loss to various titanium oxides. Side reactions and liquid phase changes should be avoided. The results of kinetic analysis show that the Friedman (104.144 kJ mol<small><sup>−1</sup></small>) model-free method has the highest average Adj. <em>R</em><small><sup>2</sup></small> (0.963) of the four activation energy calculation methods. The activation energy calculation results are used to derive the reaction model and analyze the kinetic mechanism. The dominant model (A8) of the reaction process is characterized by surface nucleation diffusion of the product. Combined with the results of thermogravimetric analysis and reaction mechanism analysis, the temperature control preparation strategy of black titanium dioxide seal is obtained: through B<small><sub>2</sub></small>O<small><sub>3</sub></small> sealing, the surface of titanium dioxide is weakly reduced below the melting point of Mg. Based on this strategy, black TiO<small><sub>2</sub></small> with oxygen vacancy defects can be obtained after acid leaching, after heating at 550 °C for more than 2 hours.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 38","pages":" 16507-16520"},"PeriodicalIF":2.5,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信