New Journal of Chemistry最新文献_第2页

Enhancing electroreduction of NO3− to NH3 over Co3O4 nanowires via N-doping† 通过n掺杂增强Co3O4纳米线上NO3−电还原为NH3

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2025-01-01 DOI: 10.1039/D4NJ04790G

Xiaoxi Guo, Pai Wang, Youhao Xu, Li Liu, Hengfeng Li and Tongwei Wu

{"title":"Enhancing electroreduction of NO3− to NH3 over Co3O4 nanowires via N-doping†","authors":"Xiaoxi Guo, Pai Wang, Youhao Xu, Li Liu, Hengfeng Li and Tongwei Wu","doi":"10.1039/D4NJ04790G","DOIUrl":"https://doi.org/10.1039/D4NJ04790G","url":null,"abstract":"Electroreduction of nitrate (NO3−) has emerged as a promising strategy for producing ammonia (NH3) at room temperature in recent years. However, the formation of the less electron-consuming H2 byproduct seriously limits the conversion efficiency of NO3− to NH3. In this study, we identify that N-doped Co3O4 can effectively convert NO3− to NH3 with a high performance (NH3 yield rate: 7.18 ± 0.59 mg h−1 cm−2, faradaic efficiency: 96.7 ± 0.88%), which is significantly higher than that of pure Co3O4 (NH3 yield rate: 4.95 ± 0.54 mg h−1 cm−2) and most reported Co-based catalysts (Table S1, ESI). Density functional theory (DFT) calculations coupled with X-ray absorption near-edge structure (XANES) experiments reveal that N-doping in Co3O4 releases more positive charge on the Co atom site due to charge compensation. This oxidized Co atom site enhances the adsorption of NO3− while weakening the adsorption of H+ through Coulombic interactions, thus improving NO3RR activity. Overall, our study provides an efficient electrocatalyst to avoid the formation of the H2 byproduct to facilitate the conversion of NO3− to NH3, and opens new avenues towards achieving green ammonia production by controlling Coulombic interactions.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1128-1132"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994201","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 of chiral modular bifunctional C2-symmetric bipyridine/phenanthroline-bipyrroloimidazolone ligands and application in noncovalent interaction-assisted enantioselective catalysis† 手性模块化双功能c2对称联吡啶/邻菲罗啉-联吡罗咪唑酮配体的发展及其在非共价相互作用辅助对映选择性催化中的应用

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-30 DOI: 10.1039/D4NJ05018E

Xi-Rui Wang, Pan Hu, Hui-Xian Jing, Zhang-Biao Yu, Zhen Yao, Xiong-Wei Liu, Wen-Jing Zhang, Li-Jun Peng and Xiong-Li Liu

{"title":"Development of chiral modular bifunctional C2-symmetric bipyridine/phenanthroline-bipyrroloimidazolone ligands and application in noncovalent interaction-assisted enantioselective catalysis†","authors":"Xi-Rui Wang, Pan Hu, Hui-Xian Jing, Zhang-Biao Yu, Zhen Yao, Xiong-Wei Liu, Wen-Jing Zhang, Li-Jun Peng and Xiong-Li Liu","doi":"10.1039/D4NJ05018E","DOIUrl":"https://doi.org/10.1039/D4NJ05018E","url":null,"abstract":"Chiral bipyridine/phenanthroline ligands have been applied as a class of unique ligands due to their rich coordination chemistry in catalysis. Herein, we synthesize 13 new C2-symmetric chiral phenanthroline-bipyrroloimidazolone ligands (Phen-BPI) and 5 new C2-symmetric chiral bipyridine-bipyrroloimidazolone ligands (BPy-BPI). These Bpy/Phen-BPI pincer ligands performed successfully in nickel-catalyzed asymmetric Friedel–Crafts alkylation of indoles with 2-enoylpyridine-1-oxides, affording the chiral products with up to 93% yield and 99% ee. The control experiment and metal complex L1–Ni crystal supported the dual activation manner, in which the tridentate Bpy/Phen-BPI ligand contained two nitrogen atoms of the pyridine unit and one tertiary amine group of the pyrroloimidazolone moiety coordinating with Ni(II) to activate the 2-enoylpyridine-1-oxides, and the tertiary amine group of the additional pyrroloimidazolone moiety as the H-bond acceptor activated the indoles through a NH-bonding interaction, resulting in the asymmetric transformation. This represented the first example showing that the Bpy/Phen ligand contained three nitrogen atoms coordinating with the metal, and the additional nitrogen atom acted as the H-bond acceptor.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1138-1144"},"PeriodicalIF":2.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994203","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

Comparable syntheses of terminal aluminum selenide and telluride† 末端硒化铝和碲化铝的可比合成

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-26 DOI: 10.1039/D4NJ04255G

Bin Li, Yuanyuan Wang, Sonam Suthar, Manbo Zhang and Kartik Chandra Mondal

引用次数: 0

In situ grown indium-based MOF reticular materials on a copper mesh for highly efficient photocatalytic reduction of Cr(vi) in wastewater† 在铜网上原位生长的铟基MOF网状材料用于废水中Cr（vi）的高效光催化还原

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-24 DOI: 10.1039/D4NJ04201H

Sijia Li, Hailong Liang, Xu Huang, Jian Huang, Hua Zhang, Yong Zhang, Jinhua Wang, Shanshan Xi, Jun Liu and Tao Luo

{"title":"In situ grown indium-based MOF reticular materials on a copper mesh for highly efficient photocatalytic reduction of Cr(vi) in wastewater†","authors":"Sijia Li, Hailong Liang, Xu Huang, Jian Huang, Hua Zhang, Yong Zhang, Jinhua Wang, Shanshan Xi, Jun Liu and Tao Luo","doi":"10.1039/D4NJ04201H","DOIUrl":"https://doi.org/10.1039/D4NJ04201H","url":null,"abstract":"Photocatalytic technology has been regarded as a promising and valuable method for water treatment owing to its safety, efficiency, and eco-friendliness. However, its practical applications are hindered by challenges such as material aggregation and difficulties in recycling and separation, especially with powder-based catalysts. This study introduces a novel photocatalyst (MIL-68(In)-NH2/Cu), synthesized through the in situ growth of an In-based MOF on a copper mesh, where the copper mesh serves as both a carrier for MIL-68(In)-NH2 and forms a heterojunction with it. MIL-68(In)-NH2/Cu exhibited a high specific surface area and a band-gap energy of 2.66 eV, achieving an impressive Cr(VI) reduction efficiency of 98.28%. Mechanistic investigations revealed that the photocatalytic reduction of Cr(VI) relied on the ˙O2− radical and the efficient transfer of photogenerated electrons. Importantly, MIL-68(In)-NH2/Cu demonstrated superior recyclability and sustained high reduction efficiency for Cr(VI), suggesting its potential as an effective solution for Cr(VI) reduction in water treatment applications.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1189-1195"},"PeriodicalIF":2.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994196","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}

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Size effects of Möbius carbon nanobelts (MCNBs) from the (7-7)MCNB to the (21-21)MCNB on their aromatic properties and third order nonlinear optical properties† 从（7-7）到（21-21）碳纳米带（MCNB）的尺寸对其芳香性质和三阶非线性光学性质的影响†

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-24 DOI: 10.1039/D4NJ04433A

Li Wang, Yan-Li Liu and Mei-Shan Wang

{"title":"Size effects of Möbius carbon nanobelts (MCNBs) from the (7-7)MCNB to the (21-21)MCNB on their aromatic properties and third order nonlinear optical properties†","authors":"Li Wang, Yan-Li Liu and Mei-Shan Wang","doi":"10.1039/D4NJ04433A","DOIUrl":"https://doi.org/10.1039/D4NJ04433A","url":null,"abstract":"Möbius carbon nanobelts (MCNBs) have attracted the attention of more and more researchers because of their torsional π conjugated structures and Möbius aromatic characteristics. The Möbius rule showed that 4n π-electron MCNBs were aromatic. Several MCNBs have been successfully synthesized experimentally recently. However, the theoretical studies on the third-order NLO properties and excited state electron transition characteristics of MCNBs have not been reported. We used density functional theory to study the structure, molecular orbitals, aromaticity, absorption spectra and third-order nonlinear optical properties of the MCNB rings. The results show that the aromatic properties of the ring come from the twisted benzene ring on the ring. With the increase of the number of benzene rings and the volume of the rings, the charge transfer region of the MCNBs gradually concentrates on the twisted benzene ring, and the maximum absorption spectrum shows a small red shift. The polarizability αtot values of the MCNBs increased as the number of benzene rings increased from 751.4 a.u. (1) to 3168.0 a.u. (8). And the second-order hyperpolarizability γtot values of the MCNBs increased from 7.4 × 105 a.u. (1) to 2.2 × 107 a.u. (8). The results showed that the larger NLO response depends on the size of MCNBs. This work provided the novel interplay between the size of MCNBs and the third order NLO responses and provided a theoretical basis for the MCNBs as an excellent nonlinear optical material.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1367-1376"},"PeriodicalIF":2.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994162","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}

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A novel modified PI separator with enhanced dendrite suppression, puncture prevention and improved size stability for room-temperature sodium–sulfur batteries† 一种新型的改性PI分离器，具有增强的枝晶抑制，防止穿刺和提高室温钠硫电池尺寸稳定性†

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-21 DOI: 10.1039/D4NJ04589K

Xiaoguang Jiao, Chao Yang, Kaixuan Ma, Caihong Feng, Qingze Jiao and Yun Zhao

{"title":"A novel modified PI separator with enhanced dendrite suppression, puncture prevention and improved size stability for room-temperature sodium–sulfur batteries†","authors":"Xiaoguang Jiao, Chao Yang, Kaixuan Ma, Caihong Feng, Qingze Jiao and Yun Zhao","doi":"10.1039/D4NJ04589K","DOIUrl":"https://doi.org/10.1039/D4NJ04589K","url":null,"abstract":"Commercial battery separators (Celgard) have poor wettability, limited heat resistance, and low needle-punching strength, and the growth of sodium dendrites can easily pierce the separators, posing significant risks to the cycle life and safety of room-temperature sodium–sulfur batteries (RT Na–S). In this work, a polyimide copolymerized with polyether (PI–PEO) membrane was prepared using an electrospinning method. By incorporating polyether segments into the polyimide molecular chain and constructing a nanofiber structure, the polarity and fiber structure of the material improved the wettability of the electrolyte. The toughness of the membrane was improved while maintaining its size stability, effectively resisting the puncture of sodium dendrites. As a result, the battery assembled with the PI–PEO separator exhibited excellent cycle stability, with a capacity maintained at 450 mA h g−1 after 2000 cycles at 3 A g−1. Additionally, the PI–PEO separator demonstrated higher ionic conductivity (1.48 mS cm−1), better size stability and improved electrolyte wettability than Celgard. This work provides a novel and effective method for developing durable room temperature sodium–sulfur batteries.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 4","pages":" 1499-1505"},"PeriodicalIF":2.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994116","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

Degradation of organic pollutants on NiFe2O4/PANI/rGO nanocomposites by peroxymonosulfate activation technology 过氧单硫酸盐活化技术降解NiFe2O4/PANI/rGO纳米复合材料上的有机污染物

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-20 DOI: 10.1039/D4NJ05122J

Yuanyuan Cheng, Ziyang Zhang, Yimiao Hong, Xinyang Li, Hangyuan Song and Yuxi Zhang

{"title":"Degradation of organic pollutants on NiFe2O4/PANI/rGO nanocomposites by peroxymonosulfate activation technology","authors":"Yuanyuan Cheng, Ziyang Zhang, Yimiao Hong, Xinyang Li, Hangyuan Song and Yuxi Zhang","doi":"10.1039/D4NJ05122J","DOIUrl":"https://doi.org/10.1039/D4NJ05122J","url":null,"abstract":"With the increasing environmental pollution, especially water pollution, it is urgent to develop environmentally friendly, low-consumption, and efficient water treatment technology. Compared with other oxidants (H2O2, peroxydisulfate (PDS), etc.), peroxymonosulfate (PMS) can degrade organic pollutants efficiently and at high speed. It is important to design a catalyst suitable for advanced oxidation processes (AOPs). By a simple solvothermal method, metal catalyst NiFe2O4 was combined with non-metal materials polyaniline and graphene to activate PMS for rhodamine B degradation. The surface morphology and chemical composition of the catalysts were studied using SEM, EDS, XRD, Raman spectroscopy, and FR-IR. The NiFe2O4/PANI/rGO composite catalysts exhibited excellent catalytic activity such that 98.05% rhodamine B could be degraded in the presence of 0.20 g L−1 catalyst and 1.2 mM PMS within 30 min. Combined with the results of X-ray photoelectron spectroscopy characterization of catalysts before and after the catalytic reaction, it is proposed that the possible degradation mechanism is mainly that electrons provided by carbon materials are captured by dissolved oxygen in the system to generate superoxide free radicals, and metal ions react with PMS to generate sulfate free radicals. Some of the generated sulfate radicals will also be converted into hydroxyl radicals, and the organic pollutant molecules will react with the active radicals in the system to achieve the degradation of pollutants.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 1062-1071"},"PeriodicalIF":2.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976333","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

Application of response surface methodology towards the development of a phenylethanoid-based silver nanoparticle with multifaceted biological properties† 响应面法在开发具有多方面生物学特性的苯乙醇基纳米银颗粒中的应用

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-20 DOI: 10.1039/D4NJ02806F

Rajdeep Saha and Biswatrish Sarkar

{"title":"Application of response surface methodology towards the development of a phenylethanoid-based silver nanoparticle with multifaceted biological properties†","authors":"Rajdeep Saha and Biswatrish Sarkar","doi":"10.1039/D4NJ02806F","DOIUrl":"https://doi.org/10.1039/D4NJ02806F","url":null,"abstract":"Silver nanoparticles (AgNPs) are one of the most studied nanomaterials for their multifaceted nature. Among the different synthesis routes for AgNPs, green synthesis is preferred owing to its efficacy and eco-friendly nature. In most cases, biological agents and phytochemicals are used as reducing and capping agents, making the synthesis method cheaper. In this work, a one-pot synthesis of AgNPs was designed using verbascoside, a naturally occurring phenylethanoid glycoside, as the reducing agent. This synthesis procedure was successfully optimized with response surface methodology. Verbascoside-AgNPs (VbAgNPs) were found to be spherical upon characterization using FESEM. Surface plasmon resonance peaks were formed within the range of 415–462 nm. Dynamic light scattering studies showed that the average particle size was 48.8 nm; this was further confirmed using HR-TEM. The presence of elemental silver was proved using XRD, and the participating functional groups in the formation of the VbAgNPs were analyzed using FTIR. Nanoparticles were found to be stable over a period of one year. Biological studies confirmed that VbAgNPs were hemocompatible and exhibited potent antioxidant, antibacterial, and biofilm inhibitory activity. Further these nanoparticles showed promising wound healing potentials in scratch wound assay with no significant cytotoxic effects in RAW 264.7 cells. It also demonstrated angiogenic properties in a fertilized chicken egg 72 hours after administration. Therefore, this nanoparticle holds multifaceted promise as an antioxidant and antibacterial biomaterial with potential for wound healing.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 1030-1042"},"PeriodicalIF":2.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976330","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

Correction: Activation of the catalytic function of formaldehyde dehydrogenase for formate reduction by single-electron reduced methylviologen 更正：用单电子还原甲基紫素激活甲醛脱氢酶对甲酸还原的催化功能

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-19 DOI: 10.1039/D4NJ90187H

T. Ishibashi, S. Ikeyama and Y. Amao

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Cyanocarbazole-based bipolar host materials for efficient phosphorescent and thermally activated delayed fluorescence OLEDs† 用于高效磷光和热激活延迟荧光oled的基于氰咔唑的双极性主体材料

IF 2.7 3区化学

New Journal of Chemistry Pub Date : 2024-12-18 DOI: 10.1039/D4NJ03124E

Yeting Tao, Yaotian Zhang, Shiying Hu, Jian Wang, Yuying Wu, Wenbo Yuan, Wei Yao and Youtian Tao

{"title":"Cyanocarbazole-based bipolar host materials for efficient phosphorescent and thermally activated delayed fluorescence OLEDs†","authors":"Yeting Tao, Yaotian Zhang, Shiying Hu, Jian Wang, Yuying Wu, Wenbo Yuan, Wei Yao and Youtian Tao","doi":"10.1039/D4NJ03124E","DOIUrl":"https://doi.org/10.1039/D4NJ03124E","url":null,"abstract":"The investigation of suitable organic host materials is crucial for the development of high-efficiency triplet exciton-based organic light emitting diodes (OLEDs). In this study, two isomeric carbazole/1,3,5-triazine hybrid bipolar-transport host materials o-3CN-TRZ and o-4CN-TRZ are developed. The alteration of cyano substitution from the 3- to the 4-position of carbazole resulted in a slight reduction in the HOMO levels from −5.80 to −5.87 eV, accompanied by a gentle decline in the singlet/triplet energy levels. This was evidenced by a shift in the fluorescence emission peak from 450 to 474 nm and the observation of relatively high triplet energies of 2.79 and 2.77 eV for o-3CN-TRZ and o-4CN-TRZ, respectively. Notably, compared to the bare carbazole-based model compound o-Cz-TRZ, the introduction of a cyano group at either the 3- or the 4-position led to a notable enhancement in the electron-transport properties. However, the hole-transport behavior of o-3CN-TRZ was evidently inferior to that of o-4CN-TRZ. Therefore, when employed as host materials for both phosphorescence and thermally activated delayed fluorescence OLEDs, o-4CN-TRZ hosted devices all exhibited higher efficiencies than o-3CN-TRZ. Maximum external quantum efficiencies of 20.5, 16.8 and 16.9% versus 19.6, 12.5 and 13.8% were achieved for green phosphorescent (ppy)2Ir(acac), greenish-yellow TADF 4tCzDOXD and 4tCzCNPy-based devices, respectively.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 935-942"},"PeriodicalIF":2.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976272","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