New Journal of Chemistry最新文献

{"title":"Copper–tin bimetallic aerogel alloy for the electroreduction of CO2 to formate†","authors":"Baibin Ren, Jing Shao, Hongji Li and Qingming Xu","doi":"10.1039/D4NJ04703F","DOIUrl":"https://doi.org/10.1039/D4NJ04703F","url":null,"abstract":"<p >The electrochemical reduction of CO<small>₂</small> (CO<small>₂</small>RR) enables the conversion of CO<small>₂</small> into various value-added hydrocarbons, with formate garnering significant interest due to its high energy density and efficient conversion potential. Although tin (Sn)-based catalysts generally exhibit high selectivity for formate and effectively suppress the hydrogen evolution reaction (HER), the simultaneous presence of low selectivity and current density limits further applications. In this work, a series of bimetallic Cu–Sn aerogel catalysts were synthesized; the Cu–Sn (1 : 1) aerogel catalyst demonstrated superior CO<small>₂</small> reduction performance, with higher cathodic reaction activity (35.61 mA cm<small>⁻²</small>) and a formate faradaic efficiency (FE) exceeding 90%, while maintaining stable CO<small>₂</small> selectivity over a period of 7 hours. The high efficiency in generating formate is attributed to the high surface area provided by the bimetallic aerogel, which facilitates CO<small>₂</small> transport and product desorption. Additionally, the high-energy interfaces formed during alloying and electronic synergistic effects increase the charge density at active sites. The self-supporting structure further optimizes electron transfer performance. This study provides new insights into the development of bimetallic catalysts for efficiently reducing CO<small>₂</small> to formate.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2201-2208"},"PeriodicalIF":2.7,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107503","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}

{"title":"Enhanced luminescence sensing of pymetrozine pesticide in Cow milk using a Cd(ii) coordination network with sensitivity up to 0.448 ppm†","authors":"Manish Kukreja, Musheer Ahmad, Nazrul Haq, Astakala Anil Kumar and Kafeel Ahmad Siddiqui","doi":"10.1039/D4NJ04487H","DOIUrl":"https://doi.org/10.1039/D4NJ04487H","url":null,"abstract":"<p >This study presents the synthesis, structural characterization, and versatile applications of a novel cadmium-based coordination polymer (CP), <strong>[{Cd(Py)<small>₂</small>I<small>₂</small>}·{Cd<small>₂</small>(Py)<small>₅</small>(BTC)(H<small>₂</small>O)I}·{H<small>₂</small>O}]<small>_<em>n</em></small>(CP-1)</strong>, for the detection and degradation of the pesticide pymetrozine (PMZ). Detailed structural analysis using single-crystal X-ray diffraction, PXRD, SEM, EDAX, and FTIR confirmed the unique topology and chemical stability of <strong>CP-1</strong>. The MOF exhibited excellent luminescence properties, functioning as an efficient fluorescent probe with a high quenching constant (<em>K</em><small>_sv</small> = 3.95 × 10<small>⁴</small> M<small>⁻¹</small>) and a detection limit of 0.153 ppm in DMSO. Additionally, <strong>CP-1</strong> showed strong photocatalytic performance, degrading 93.87% of PMZ under UV light within 120 minutes. A key highlight of the study is the ability of <strong>CP-1</strong> to detect PMZ in milk samples, achieving an impressive quenching efficiency of 89.89% and a detection limit of 0.448 ppm, underscoring its practical utility in food safety monitoring. Furthermore, <strong>CP-1</strong> demonstrated excellent recyclability with minimal loss of efficiency over multiple cycles, making it a highly promising material for sustainable environmental applications in pollutant sensing and remediation.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 7","pages":" 2703-2721"},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379703","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}

{"title":"Orthovanadate cofactor chemistry of marine bromoperoxidases†","authors":"Jens Hartung","doi":"10.1039/D4NJ02575J","DOIUrl":"https://doi.org/10.1039/D4NJ02575J","url":null,"abstract":"<p >In the past few years, two models have emerged that describe the cofactor chemistry of vanadate-dependent bromoperoxidases at different levels of theory. The first model, derived from steady-state kinetics, spectroscopy, and X-ray diffraction, describes cofactor bonding as a covalent interaction between orthovanadate and an imidazole nitrogen from a histidine side chain. This imidazole entity, along with side chains from two additional histidines, two arginines, one lysine, and one serine, forms an apparently conserved binding site architecture for the investigated class of enzymes (EC 1.11.1.18). Substrate conversion, according to the first bromoperoxidase reaction model, occurs <em>via</em> oxygen atom transfer from an anionic histidine-bound peroxometavanadate to bromide, assisted by Brønsted-acid catalysis involving a proximate imidazole N–H bond or, alternatively, ammonium from a protonated lysine side chain. A second and more recent approach applies an advanced electronic structure method (B3LYP/6-311++G**) to develop a thermochemistry-based approach for understanding cofactor bonding and reactivity. This is supplemented by natural bond orbital (NBO) analysis to translate results from density functional theory into a molecular orbital-based reaction theory, which describes the bromoperoxidase mechanism. In this approach, the effects of amino acid side chain bonding on the structure and reactivity of orthovanadium compounds and derived peroxoic acids are examined. The role these chemical changes play in controlling cofactor reactivity towards bromide serves as the starting point for aligning elementary steps with the nucleophile-electrophile principle, ultimately leading to a thermochemically consistent catalytic cycle. Accordingly, hydrogen bonding by the guanidinium group from arginine positions dihydrogen orthovanadate for protonation and subsequent transformation into orthovanadium peroxoic acid upon reaction with hydrogen peroxide. According to the density functional theory model, this is the only feasible electrophile capable of mediating oxygen atom transfer to bromide with virtually no activation energy, thereby explaining the remarkable rate of enzymatic bromide oxidation.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2050-2070"},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107511","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}

{"title":"A study on the end-point determination of the Xuefu Zhuyu capsule raw powder mixing process based on near-infrared spectroscopy†","authors":"Xi Wang, Guangpu Fang, Jiahe Qian, Shule Zhang, Wen Song, Ying Zhang, Zheng Li, Yi Wang and Wenlong Li","doi":"10.1039/D4NJ04461D","DOIUrl":"https://doi.org/10.1039/D4NJ04461D","url":null,"abstract":"<p >Near-infrared (NIR) spectroscopy technology combined with chemometric algorithms was used to determine the mixing end-point of Xuefu Zhuyu capsule raw powder and find the shortest mixing time. Firstly, a calibration set consisting of 18 batches of samples was used to establish invasive and non-invasive calibration models using a partial least squares regression (PLSR) method, and the influence on powder mixing uniformity was explored. Finally, moving block standard deviation (MBSD) was used to determine the mixing end-point. The predictive performance of invasive and non-invasive calibration models was relatively similar, each with its own advantages and disadvantages. The invasive model is more accurate, but the disadvantage is that it requires sampling midway, which disrupts the continuity of the mixing process. The non-invasive model is faster and does not cause waste of raw materials. It is difficult to determine the mixing end-point of each component using MBSD, but predicting the overall mixing end-point of powder is a simple and convenient method. The comprehensive properties of the powder were also used to further explain the mixing process. The non-invasive method established by combining NIR spectroscopy technology with PLSR was used to monitor the mixing process of Xuefu Zhuyu capsule raw powder materials, which is beneficial for industrial production process analysis.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2116-2128"},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107517","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}

{"title":"Synthesis, photophysical, electrochemical, and spectroelectrochemical properties of the β-pyrrole functionalized push–pull porphyrins†","authors":"Amiy Krishna and Rajneesh Misra","doi":"10.1039/D4NJ04533E","DOIUrl":"https://doi.org/10.1039/D4NJ04533E","url":null,"abstract":"<p >A set of β-pyrrole functionalized phenothiazine, phenothiazine 5,5-dioxide, carbazole, and ferrocenyl porphyrins <strong>1–4</strong> and their Zn(<small>II</small>) complexes <strong>1a–4a</strong> were designed and synthesized <em>via</em> Pd-catalyzed Suzuki cross-coupling reaction. These porphyrins exhibit red-shifted absorption and emission compared to <em>meso</em>-tetraphenylporphyrins. In porphyrin <strong>2</strong>, the incorporation of a phenothiazine 5,5-dioxide unit at the β-pyrrolic position led to enhancement in the fluorescence quantum yield (<em>Φ</em> = 0.116) compared to phenothiazine appended porphyrin <strong>1</strong> (<em>Φ</em> = 0.099). The electrochemical analysis of the porphyrins revealed two oxidation and two reduction potentials owing to the porphyrin core, while an additional oxidation wave was observed due to the appended redox entity. Spectroelectrochemical measurements at the first oxidation potential of porphyrins <strong>1–4</strong> displayed a red-shifted Soret band at ∼450 nm along with an increased intensity of the Q-band at ∼670 nm. Computationally optimized structures of porphyrins <strong>1–4</strong> and corresponding Zn(<small>II</small>) complexes <strong>1a–4a</strong> revealed that the appended redox moieties exhibit out-of-plane geometry relative to the porphyrin core.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2143-2152"},"PeriodicalIF":2.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107498","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}

{"title":"A tough and high adhesive ionogel electrolyte achieved by in situ phase separation for high-performance electrochromic devices†","authors":"Dawei Nie, Jinxu Zhao, Jianming Zheng and Chunye Xu","doi":"10.1039/D4NJ05112B","DOIUrl":"https://doi.org/10.1039/D4NJ05112B","url":null,"abstract":"<p >Ionogels are promising candidates for electrolytes used in electrochromic devices (ECDs) attributed to their good thermal stability, low saturation vapour pressure and high ionic conductivity. However, the poor mechanical and adhesive strength of electrolytes in these devices limits their practical applications in daily life. Here, an ionogel electrolyte with high mechanical properties and adhesive strength was prepared by a simple and efficient one-step polymerization method using an <em>in situ</em> phase separation strategy. The ionogel possesses high toughness (5.33 MJ m<small>⁻³</small>) and stretchability (786%) as well as high adhesive strength (2.18 MPa) and excellent peel resistance. We assembled ECDs using this excellent ionogel as an electrolyte, along with poly(3,4-(2,2-dimethyl-propanedioxy)thiophene) (PProDOT-Me<small>₂</small>) film and prussian blue (PB) film as the electrochromic layer and the ionic storage layer. It demonstrated significant transmittance contrast (50%), rapid response time (1.2/1.8 s), and exceptional cycling stability, maintaining over 95% of its performance after 10 000 cycles. This ionogel electrolyte with high mechanical properties and high adhesive strength will further promote the practical application of ECDs.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 5","pages":" 1827-1835"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107594","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}

{"title":"Synthesis and characterization of hyperbranched polyesters from polyethylene glycol and citric acid: structural insights and antibiotic resistance mitigation against drug-resistant bacterial strains†","authors":"Aniruddha Mukherjee, Sonai Dutta, Reetika Sarkar, Sayan Basak, Srijoni Sengupta, Subhadeep Chakraborty, Anirban Mukherjee, Payel Biswas, Satish Kumar and Abhijit Bandyopadhyay","doi":"10.1039/D4NJ04656K","DOIUrl":"https://doi.org/10.1039/D4NJ04656K","url":null,"abstract":"<p >The escalating global threat of microbial diseases and antibiotic resistance has spurred research into innovative polymeric materials with potent antimicrobial properties, driven by the impact on healthcare systems worldwide and the increasing resistance of conventional drugs. Multidrug-resistant (MDR) bacteria pose a significant challenge to global health, endangering vulnerable patients and critical medical procedures, with profound economic implications. Addressing antibiotic resistance requires a multifaceted approach, including exploring new drug formulations like natural and hyperbranched polymers. A promising strategy involves combining synthetic hyperbranched polymers with existing drugs to eliminate resistant cells and impede biofilm formation more effectively within a shorter timeframe, offering a cost-effective alternative for treating antibiotic-resistant infections. Innovative polyesters derived from polyethylene glycol and citric acid show potential as nanoscale antibiotics due to their biocompatibility, biodegradability, and antibacterial activity. With this as the context, our study aims to synthesize hyperbranched polyesters by controlling gelation and optimizing branching with strategic adjustments of citric acid mole composition relative to PEG. It was also found that antimicrobial studies revealed the efficacy of these polyesters against Gram-positive and Gram-negative bacteria, particularly in specific formulations. We envision that combining sublethal doses of these polyesters with conventional antibiotics resulted in synergistic effects, enhancing antimicrobial activity and biofilm eradication without promoting resistance development.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 5","pages":" 1883-1898"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107600","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}

{"title":"Bone cement prepared using the isobornyl acrylate monomer shows decent mechanical strength and antibacterial activity","authors":"Lu-Yang Han, Dong Yang, Hong-Liang Wang, Zhe Gao, Yin-Yu Qi, Tao Zhou, Yang Xu and Jian-Jun Chu","doi":"10.1039/D4NJ04291C","DOIUrl":"https://doi.org/10.1039/D4NJ04291C","url":null,"abstract":"<p >A new type of antibacterial bone cement incorporating surface stereochemistry and the antibacterial monomer isobornyl acrylate (BA) is reported. In this study, BA was integrated into poly(methyl methacrylate) (PMMA) bone cement through liquid-phase modification to create a non-leaching antibacterial bone cement (NLBC). The maximum temperature, setting time, antibacterial activity, mechanical strength, and biocompatibility of this NLBC were comprehensively evaluated. The results showed that the BA cement exhibited exceptional antibacterial activity and mechanical properties. The 30 wt% BA cement demonstrated an antibacterial activity of 81.0 ± 3.1% against <em>Staphylococcus aureus</em> and a compressive strength of 72.10 ± 1.97 MPa. The BA cement exhibited good biocompatibility both <em>in vitro</em> and <em>in vivo</em>. Furthermore, we compared the antibacterial activity, mechanical properties, and biocompatibility of the BA cement with those of three previously reported bone cements, which contain the antibacterial monomers 2-(<em>tert</em>-butylamino)ethyl methacrylate (TBAEMA), methacrylate derived from benzothiazole (BTTMA), and nitrofuran methacrylate (NFMA), respectively. The findings of this study have important implications for the advancement of antibacterial bone cement and its application in medical implants.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2106-2115"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107516","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}

{"title":"Photocatalytic removal of NOx using cobalt oxide/graphitic carbon nitride nanocomposites under visible light irradiation†","authors":"Yasser A. Attia, Mohamed Taha and Shams H. Abdel-Hafez","doi":"10.1039/D4NJ05336B","DOIUrl":"https://doi.org/10.1039/D4NJ05336B","url":null,"abstract":"<p >The development of efficient photocatalysts for the selective conversion of nitrogen oxides (NO<small>_<em>x</em></small>) into valuable products is essential for promoting environmental sustainability and addressing air pollution. This study presents the synthesis and application of Co<small>₃</small>O<small>₄</small>/g-C<small>₃</small>N<small>₄</small> nanocomposites as high-performance photocatalysts for the oxidation of NO<small>_<em>x</em></small> to nitric acid (HNO<small>₃</small>) under visible light irradiation. The synthesized nanocomposites exhibited a large surface area and high porosity, which are critical for maximizing interaction with pollutants. Additionally, their efficient light absorption characteristics enhance photocatalytic activity. The incorporation of hole scavengers was found to significantly improve photocatalytic performance by suppressing charge recombination. Remarkably, the NO<small>_<em>x</em></small>-to-HNO<small>₃</small> conversion efficiency increased from 25.5% for pure Co<small>₃</small>O<small>₄</small> to 86.5% for the nanocomposites, reaching 92% with <em>t</em>-butanol as a hole scavenger, under visible light irradiation at room temperature for 2 hours. The photodegradation rate of NO<small>_<em>x</em></small> followed the order: Co<small>₃</small>O<small>₄</small>/g-C<small>₃</small>N<small>₄</small> NCs&gt; g-C<small>₃</small>N<small>₄</small> NPs&gt; Co<small>₃</small>O<small>₄</small> NPs, indicating the synergistic effect of the nanocomposite. This significant improvement is attributed to the synergistic effects of the nanocomposite structure, visible light absorption, and efficient charge separation, enabling the stepwise oxidation of NO to HNO<small>₃</small> under mild conditions. This research demonstrates the potential of advanced photocatalysts for the simultaneous remediation of NO<small>_<em>x</em></small> emissions and production of valuable chemicals.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 5","pages":" 1854-1864"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107597","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}

{"title":"Hydrothermal carbonization assisted lignocellulose derived formation of ZnO/hydrochar composites through morphology evolution for an efficient photo and electrocatalytic performance†","authors":"Raheela Akhter, Shokat Hussain, Srinibas Beura, S. M. Nizam Uddin and Shrikant S. Maktedar","doi":"10.1039/D4NJ04054F","DOIUrl":"https://doi.org/10.1039/D4NJ04054F","url":null,"abstract":"<p >Conversion of agricultural waste into high-value functional materials offers a sustainable pathway for environmental remediation and technological advancement. This study utilizes hydrothermal carbonization (HTC) to transform walnut shell powder (WSP) into hydrochar, which, combined with ZnO, forms energy-efficient ZnO/hydrochar composites. These composites exhibit remarkable performance in electrochemical glucose sensing and photocatalytic degradation of methylene blue (MB) dye under visible light. Electrochemical studies, including cyclic voltammetry and time-based amperometry, revealed enhanced sensitivity, stability, and a lower detection limit for glucose oxidation compared to individual ZnO or hydrochar. Photocatalytic experiments demonstrated efficient MB dye degradation due to improved charge separation and reactive oxygen species (ROS) generation. The synergistic integration of ZnO's photocatalytic properties and hydrochar's adsorptive capacity highlights the dual functionality of these composites. This research not only promotes sustainable waste management but also advances applications in glucose sensing and pollutant degradation.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 6","pages":" 2453-2472"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107679","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}