New Journal of Chemistry最新文献

A bimetallic catalyst of Fe–Co nanocomposite encapsulated in N-doped carbon nanotubes for colorimetric monitoring and degradation of hydroquinone in rivers† 氮掺杂碳纳米管包裹铁钴纳米复合材料的双金属催化剂用于河流中对苯二酚的比色监测和降解

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-06 DOI: 10.1039/D4NJ04563G

Yuan Liao, Xumin Zhang, Xiaomin Li, Lingling Lin, Yindi Shi and Dongping Chen

{"title":"A bimetallic catalyst of Fe–Co nanocomposite encapsulated in N-doped carbon nanotubes for colorimetric monitoring and degradation of hydroquinone in rivers†","authors":"Yuan Liao, Xumin Zhang, Xiaomin Li, Lingling Lin, Yindi Shi and Dongping Chen","doi":"10.1039/D4NJ04563G","DOIUrl":"https://doi.org/10.1039/D4NJ04563G","url":null,"abstract":"In this study, we developed an encapsulating bimetallic nanoparticle strategy to construct nanocomposites with Fe–Co dual sites inserted into nitrogen-doped carbon nanotubes. The structural composition and morphology of the Fe–Co bimetallic composites were investigated using several characterization methods. The colorimetric assay demonstrated that compared with other composite materials, such as Fe–N–C and Co–N–C, the as-prepared catalyst exhibited improved catalytic performance. DFT calculations of the Gibbs free energy showed that cobalt atoms could synergistically influence the positioning of iron atoms and serve as secondary reaction sites, thereby enhancing the catalytic performance of the composite material. Based on this, a new bimetallic catalyst was fabricated for the colorimetric detection and degradation of hydroquinone. Experimental results showed that the absorbance was linearly correlated with the concentration of HQ in the range of 0.5–30 μM, with a detection limit of 0.21 μM. Besides, the hydroxyl radicals (˙OH) and superoxide anions (O2˙−) generated during the reaction could be utilized to degrade HQ, achieving a removal rate of 85.9% within two hours. Meanwhile, we validated the accuracy of the colorimetric detection of catechol using this catalyst and the HPLC method. In addition, the catalyst was applied to determine HQ in real river water samples, yielding satisfactory results. The work provides a feasible approach for developing low-cost, high-activity and chemically stable bimetallic catalysts for environmental monitoring and protection.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1531-1539"},"PeriodicalIF":2.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994120","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

Development and validation of a high-throughput HPLC-MS/MS method for the simultaneous determination of exatecan and its cathepsin B-sensitive prodrug in rat plasma† 同时测定大鼠血浆中艾替替康及其组织蛋白酶b敏感前药的高通量HPLC-MS/MS方法的建立与验证

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-06 DOI: 10.1039/D4NJ04475D

Xiaolan Xu, Jing Li, Xiaohua Ran, Chenxia Bai, Qing Yan, Yangyang Liu, Qikun Jiang and Tianhong Zhang

{"title":"Development and validation of a high-throughput HPLC-MS/MS method for the simultaneous determination of exatecan and its cathepsin B-sensitive prodrug in rat plasma†","authors":"Xiaolan Xu, Jing Li, Xiaohua Ran, Chenxia Bai, Qing Yan, Yangyang Liu, Qikun Jiang and Tianhong Zhang","doi":"10.1039/D4NJ04475D","DOIUrl":"https://doi.org/10.1039/D4NJ04475D","url":null,"abstract":"Exatecan is a potent topoisomerase I inhibitor. However, its clinical application is limited by its high toxicity and poor tumor targeting. In this study, a cathepsin B-sensitive fatty acid prodrug (C12-VC-PAB-Exa) with high albumin affinity was introduced and prepared into albumin nanoparticles with the aim of improving the safety of exatecan in blood circulation and accumulation at tumor sites. To assess the pharmacokinetic behavior of exatecan and its prodrug, a reliable, selective, and high-throughput HPLC-MS/MS method for the simultaneous determination of exatecan and C12-VC-PAB-Exa in rat plasma was established and fully validated. The samples were prepared using one-step protein precipitation, and then separated on a ZORBAX SB-C18 column (2.1 × 50 mm, 3.5 μm) using the gradient elution procedure, and detected using a triple–quadrupole tandem mass spectrometer with a positive electrospray ionization interface in multiple reaction monitoring mode. Exatecan and C12-VC-PAB-Exa have excellent linear correlations over the concentration range of 0.5–2000 ng mL−1 and 5–20 000 ng mL−1 (r > 0.995), with lower limits of quantification of 0.5 ng mL−1 and 5 ng mL−1, respectively. The intra- and inter-day precision and accuracy were within ±15%. The validated method was successfully applied to the pharmacokinetic study of exatecan solution and C12-VC-PAB-Exa nanoparticles in Sprague-Dawley rats for the first time. The results of the pharmacokinetics demonstrated that the nano-delivery system of the prodrug is a promising strategy to improve the physicochemical properties of exatecan. The analytical method could provide technical support for the subsequent in vivo studies of exatecan and its derivatives.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1522-1530"},"PeriodicalIF":2.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994119","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

Impact of coordinated nitrogen atoms on the electrocatalytic water oxidation properties of copper complexes with pentadentate ligands† 配位氮原子对五齿酸铜配合物电催化水氧化性能的影响

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-03 DOI: 10.1039/D4NJ03482A

Zhichao Qi, Jinlin Hu, Zhijun Ruan, Yanmei Chen, Yanbo Qu, Xiangming Liang and Junqi Lin

{"title":"Impact of coordinated nitrogen atoms on the electrocatalytic water oxidation properties of copper complexes with pentadentate ligands†","authors":"Zhichao Qi, Jinlin Hu, Zhijun Ruan, Yanmei Chen, Yanbo Qu, Xiangming Liang and Junqi Lin","doi":"10.1039/D4NJ03482A","DOIUrl":"https://doi.org/10.1039/D4NJ03482A","url":null,"abstract":"The electrocatalytic water oxidation by a mononuclear Cu complex with an aliphatic pentaamine ligand was conducted and is reported herein. In the phosphate buffer solution at pH 8.0, the [Cu(tetren)](ClO4)2 (tetren = tetraethylenepentamine) complex functioned as an efficient homogeneous water oxidation catalyst, operating via a single-site catalysis mechanism. The catalytic properties of [Cu(tetren)](ClO4)2, featuring an all-aliphatic amine nitrogen coordination environment, were investigated and compared with those of another mononuclear Cu complex, [Cu(pydien)](ClO4)2 (pydien = 1,9-bis(2-pyridyl)-2,5,8-triazanonane), with similar distorted square pyramidal geometry formed by azamine nitrogen atoms and pyridine rings. Experimental results indicated that [Cu(tetren)]2+ accelerated water oxidation to oxygen through a consecutive proton-coupled electron transfer process, resulting in a lower catalytic overpotential for water oxidation and higher catalytic current density than [Cu(pydien)](ClO4)2. Related measurement results revealed that the chain aliphatic amine pentadentate ligand, with its greater flexibility, was more beneficial for achieving higher water oxidation catalytic activity in the Cu complex than the chain pyridine–amine ligand, providing valuable insights for designing and screening Cu complexes as efficient electrochemical water oxidation catalysts.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1451-1458"},"PeriodicalIF":2.7,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994100","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

Surface-reconstructed FeOOH@CoFeOS/NF architectures: leveraging nano-layered stacking for accelerated oxygen evolution kinetics† 表面重建FeOOH@CoFeOS/NF结构：利用纳米层状堆叠加速析氧动力学†

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-03 DOI: 10.1039/D4NJ04690K

Xuelei Wang, Xiang Li, Baohua Li, Wenchun Wang, Shizhen Bai, Shifeng Zai, Zhenhai Ni and Chao Meng

引用次数: 0

Cobalt complex with a tetradentate aminopyridine ligand: a single-component and efficient catalytic system for the cycloaddition reactions of CO2 and epoxides† 四齿氨基吡啶配体钴配合物：二氧化碳和环氧化物环加成反应的单组分高效催化体系

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-03 DOI: 10.1039/D4NJ04346D

Ning Yu, Bowen Zhang, Shuyan Liang, Minghui Shi, Feng Han, Congcong Zhang, Qingfeng Yang and Chengxia Miao

{"title":"Cobalt complex with a tetradentate aminopyridine ligand: a single-component and efficient catalytic system for the cycloaddition reactions of CO2 and epoxides†","authors":"Ning Yu, Bowen Zhang, Shuyan Liang, Minghui Shi, Feng Han, Congcong Zhang, Qingfeng Yang and Chengxia Miao","doi":"10.1039/D4NJ04346D","DOIUrl":"https://doi.org/10.1039/D4NJ04346D","url":null,"abstract":"A simple and commercially viable synthetic route for tetradentate aminopyridine ligands composed of diamine and pyridine has been developed. A series of novel cobalt complexes incorporating these tetradentate aminopyridine ligands were subsequently synthesized. The single crystal of one such cobalt complex was characterized, revealing coordination through four N atoms in a cis-α topology. This cobalt complex was successfully employed as a single-component catalyst for the synthesis of cyclic carbonates from epoxides and carbon dioxide at 90 °C under 2.5 MPa CO2 pressure in solvent-free conditions. The catalyst exhibited excellent recyclability and stability, as confirmed by infrared radiation (IR) spectra and inductively coupled plasma (ICP) analyses. Additionally, a single-Co catalytic mechanism for the cycloaddition reaction was investigated using density functional theory (DFT). Notably, a reaction mechanism has been proposed in which the epoxide is activated following the release of a Br− ion from the cobalt complex.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1430-1439"},"PeriodicalIF":2.7,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994168","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 NiO/MnO2 nanostructure for efficient reduction of 4-nitrophenol and chromium(vi)† 一种高效还原4-硝基苯酚和铬（vi）†的NiO/MnO2纳米结构

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-02 DOI: 10.1039/D4NJ05066E

Nand Kishor Gour, Manash J. Baruah, Shivanee Borpatra Gohain, Eramoni Saikia, Amir Sohail, Mamon Dey, Abjana Parbin, Gitashree Darabdhara, Arup Jyoti Das, Rupjyoti Dutta, Young-Bin Park, Biraj Das and Mukesh Sharma

引用次数: 0

Remediation of water containing mercury(ii) using poly-2-aminothiazole intercalated α-zirconium phosphate nanoplates† 聚2-氨基噻唑插层α-磷酸锆纳米板对含汞水的修复(ii

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-02 DOI: 10.1039/D4NJ05019C

Saadia M. Waly, Ahmad M. El-Wakil, Weam M. Abou El-Maaty and Fathi S. Awad

{"title":"Remediation of water containing mercury(ii) using poly-2-aminothiazole intercalated α-zirconium phosphate nanoplates†","authors":"Saadia M. Waly, Ahmad M. El-Wakil, Weam M. Abou El-Maaty and Fathi S. Awad","doi":"10.1039/D4NJ05019C","DOIUrl":"https://doi.org/10.1039/D4NJ05019C","url":null,"abstract":"The effectiveness of organic and inorganic adsorbents in treating water contaminated with potentially toxic elements (PTEs) is primarily influenced by their hydrophilicity and complexation abilities. In this study, a poly(2-aminothiazole)/α-zirconium phosphate nanocomposite (AT@ZrP) was synthesized and evaluated for its potential as an efficient adsorbent for Hg(II) removal, showcasing promising applications in mercury decontamination. The AT@ZrP nanocomposite was fabricated through straightforward hydrothermal synthesis of ZrP nanoplates followed by intercalation with 2-aminothiazole and an in situ oxidative polymerisation process. The results demonstrated that increasing the concentration of NH and SH functional groups significantly improved the Hg(II) complexation capacity of the AT@ZrP composite, achieving an adsorption capacity of 246.0 mg g−1, markedly higher than 21.0 mg g−1 of ZrP nanoplates. Additionally, AT@ZrP exhibited over 90% removal efficiency across a wide range of Hg(II) concentrations (5–100 ppm). The pseudo-second-order kinetic model and the Langmuir adsorption isotherm provided a good description of the experimental results, suggesting that the grafted amine and thiol groups on or between the ZrP nanoplates promoted chemisorption. When several metal ions were present, the composite also showed outstanding selectivity for Hg(II). Notably, its adsorption performance showed minimal decline even after 10 consecutive cycles. Thus, the AT@ZrP nanocomposite represents a reliable and efficient adsorbent for the treatment of industrial wastewater containing Hg(II) ions.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1314-1324"},"PeriodicalIF":2.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994143","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 of aryl esters using carboxylic acids, triarylphosphites, and N-iodosuccinimide† 羧酸、三芳基亚磷酸酯和n -碘丁二酰亚胺†合成芳基酯

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-02 DOI: 10.1039/D4NJ04215H

Sandhya Acharya, Dhiraj K. Jha, Marc Torres, Samantha Chapa, Anshuman Ravi, Rishi Mathew and John C.-G. Zhao

引用次数: 0

Direct and selective extraction of precious metal molybdenum from solid matrices using supercritical carbon dioxide 超临界二氧化碳直接和选择性地从固体基质中萃取贵金属钼

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-02 DOI: 10.1039/D4NJ05173D

Ankita Rao, Avinash S. Kanekar, Arijit Sengupta and Ruma Gupta

{"title":"Direct and selective extraction of precious metal molybdenum from solid matrices using supercritical carbon dioxide","authors":"Ankita Rao, Avinash S. Kanekar, Arijit Sengupta and Ruma Gupta","doi":"10.1039/D4NJ05173D","DOIUrl":"https://doi.org/10.1039/D4NJ05173D","url":null,"abstract":"Sustainable separation and purification strategies for transition metal molybdenum, enlisted as a critical mineral owing to its vast industrial applications and limited natural resources, from secondary resources are of paramount importance. Directed towards this aim, this is the first report of direct, mineral acid-free Mo recovery from solid matrices by supercritical carbon dioxide extraction using alpha benzoin oxime (ABO) and pentadecafluoro-n-octanoic acid (HPFOA) as complexing agents. Efficient (>90%) Mo recovery was achieved under optimised conditions (323 K, 200 atm, in situ complexation mode) by eliminating any high-temperature treatment and harsh acid/base leaching steps. Additionally, high removal efficiencies were obtained for other metal ions, namely, U (>91%) from the U–Mo blend matrix relevant to fission moly applications and V (∼100%), Al (>88%), and Ni (>91%) from the simulated spent catalyst matrix. Further insight into the Mo-complex in the SC CO2 extract was obtained by UV-vis spectrophotometry, FTIR and electrometric investigations. Mo oxalate precipitation from a compact SC CO2 extract was also demonstrated. This study, therefore, addresses the challenge of developing a simple, efficient and selective method for the recovery of Mo from various solid matrices.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1400-1409"},"PeriodicalIF":2.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994165","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

Wedding cake growth and ultraviolet performance of β-GeSe2 nanosheets† 婚礼蛋糕生长及β-GeSe2纳米片†的紫外性能

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-02 DOI: 10.1039/D4NJ04496G

Zhaxi Suonan, Hanxiang Wu, Hua Xu, Meijie Zhu, Lin Li, Shanshan Chen, Zhihai Cheng and Fei Pang

{"title":"Wedding cake growth and ultraviolet performance of β-GeSe2 nanosheets†","authors":"Zhaxi Suonan, Hanxiang Wu, Hua Xu, Meijie Zhu, Lin Li, Shanshan Chen, Zhihai Cheng and Fei Pang","doi":"10.1039/D4NJ04496G","DOIUrl":"https://doi.org/10.1039/D4NJ04496G","url":null,"abstract":"As an important layered material, two-dimensional (2D) GeSe2 has recently attracted interest owing to its direct wide bandgap and potential applications in ultraviolet (UV) detection. Herein, we utilized GeTe as a Ge precursor for the growth of β-GeSe2 nanosheets on mica via chemical vapor deposition. By optimizing the growth time and temperature, high-quality β-GeSe2 nanosheets with various vertical stacking configurations were achieved. Detailed investigation shows the formation of wedding-cake-like β-GeSe2 with terraced structures originating from the high supersaturation of precursors. With increasing temperature and growth time, supersaturation was enhanced and β-GeSe2 nanosheets formed a wedding cake structure. Moreover, the thickness of β-GeSe2 nanosheets with flat surfaces is down to 9.2 nm. The intensity of Raman vibration peaks varies across positions with different thicknesses on the β-GeSe2 nanosheet. With decreasing thickness of the terraced structure of GeSe2 nanosheets, the Ag Raman vibration peak becomes weaker because of the reduction in the number of scattering centers. Furthermore, angle-resolved polarization Raman spectroscopy was conducted at room temperature. Additionally, the optical properties of β-GeSe2 nanosheets demonstrated that the β-GeSe2 nanosheets with a pyramid stacked structure exhibited a direct broadband gap of 2.72 eV. The results indicate that the β-GeSe2 nanosheets are potential material for ultraviolet photodetection and polarized optoelectronic devices.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1410-1418"},"PeriodicalIF":2.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994166","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