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Synergistic physical and chemical polysulfide immobilization via laser-induced graphene separator in LiS batteries 激光诱导石墨烯分离器在锂离子电池中的协同物理和化学多硫化物固定化
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-06 DOI: 10.1016/j.inoche.2026.116299
Navid Aslfattahi , Maryam Sadat Kiai , Nilgun Baydogan , Chaohe Xu , Lingenthiran Samylingam , Kumaran Kadirgama
The commercialization of lithium–sulfur (LiS) batteries is limited by the dissolution and migration of lithium polysulfides, which cause rapid capacity decay and poor cycling stability. Here, we introduce laser-induced graphene (LIG) as a multifunctional separator coating to mitigate these issues. LIG, produced via direct laser scribing of polyimide, forms a three-dimensional, porous graphenic network with high conductivity and tunable heteroatom functionality. Its hierarchical structure of few-layer graphene nanosheets provides abundant sites for physical confinement of polysulfides while enabling rapid electron transport. Electrochemical tests show that LIG-coated separators significantly enhance sulfur utilization, suppress the shuttle effect, and deliver stable reversible capacities of ∼950 mAh g−1 after 400 cycles under high sulfur loading, with excellent rate performance. Density-of-states analysis confirms that defect-rich regions in LIG strengthen sulfur binding and facilitate charge transfer. In-situ SEM and EDS mapping demonstrate the structural resilience of LIG, maintaining morphological integrity after prolonged cycling. These findings establish LIG-coated separators as a scalable and effective strategy for high-performance, durable LiS batteries.
锂硫电池的商业化受到多硫化物锂的溶解和迁移的限制,导致容量衰减快,循环稳定性差。在这里,我们引入激光诱导石墨烯(LIG)作为多功能隔膜涂层来缓解这些问题。LIG通过直接激光刻划聚酰亚胺制备,形成具有高导电性和可调谐杂原子功能的三维多孔石墨网络。其多层石墨烯纳米片的分层结构为多硫化物的物理限制提供了丰富的场所,同时实现了快速的电子传递。电化学测试表明,在高硫负载下,锂离子包覆的分离器显著提高了硫的利用率,抑制了穿梭效应,并在400次循环后提供了稳定的~ 950 mAh g−1的可逆容量,具有优异的倍率性能。态密度分析证实,LIG中富含缺陷的区域加强了硫结合,促进了电荷转移。原位SEM和EDS图谱显示了LIG的结构弹性,在长时间循环后保持形态完整性。这些发现确立了锂离子涂层隔膜作为高性能、耐用锂离子电池的可扩展和有效策略。
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引用次数: 0
A comprehensive review on MIL metal-organic framework materials in CO2 valorization: Capture, separation, and conversion to fuels and chemicals MIL金属-有机骨架材料在CO2增值中的应用综述:捕获、分离和转化为燃料和化学品
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-29 DOI: 10.1016/j.inoche.2026.116257
Bongokuhle S. Xaba , Makhosonke Ngcobo , Kabelo Ledwaba , Luiz H. Vieira , Peter R. Makgwane
The utilization of fossil fuels is unsustainable in the long term due to their negative impact on the environment, particularly their contribution to climate change. Therefore, new feedstocks such as carbon dioxide (CO2) and green hydrogen are expected to replace or complement fossil fuel-based feedstocks in the future. Innovation in materials that are compatible with these new feedstocks is key to ensuring the supply of fuels and chemicals is maintained upon this transition. Metal-Organic Frameworks (MOFs), specifically Materials Institute Lavoisier (MIL) MOFs, possess a high surface area and porous structure, offering numerous catalytic sites for CO2 adsorption. Their application is demonstrated by important reactions such as CO2 photoreduction, electroreduction, chemical organic synthesis, and thermocatalytic CO2 hydrogenation, highlighting their usefulness. Moreover, the strong affinity of MIL MOFs for CO2 makes them highly suitable for application in capture and adsorption processes, such as direct air capture. The current perspective aims to provide insight into MIL MOFs, covering their synthesis, applications in CO2 capture and adsorption, CO2 photocatalysis, electrocatalysis, thermocatalytic hydrogenation, and chemical organic synthesis. This review offers valuable insights that can empower researchers to make informed decisions when selecting and designing MIL MOFs, perfectly aligned with their unique applications in the CO2 valorisation.
从长远来看,化石燃料的利用是不可持续的,因为它们对环境的负面影响,特别是对气候变化的影响。因此,二氧化碳(CO2)和绿色氢等新原料有望在未来取代或补充基于化石燃料的原料。与这些新原料兼容的材料创新是确保在这种过渡中维持燃料和化学品供应的关键。金属有机框架(mof),特别是材料研究所拉瓦锡(MIL) mof,具有高表面积和多孔结构,为CO2吸附提供了许多催化位点。二氧化碳光还原、电还原、化学有机合成和热催化二氧化碳加氢等重要反应证明了它们的应用,突出了它们的实用性。此外,MIL mof对CO2的强亲和力使其非常适合应用于捕集和吸附过程,如直接空气捕集。目前的观点旨在深入了解MIL mof,包括它们的合成,在CO2捕获和吸附,CO2光催化,电催化,热催化加氢和化学有机合成中的应用。这篇综述提供了有价值的见解,可以使研究人员在选择和设计MIL mof时做出明智的决定,完全符合其在二氧化碳增值中的独特应用。
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引用次数: 0
Synthesis of heteroleptic ytterbium complexes with electron-accepting- and electron-donor-substituted 2-tosylamino-benzylidene-aryloyl-hydrazones for host-free NIR emitting OLEDs 无主近红外发光有机发光器件中接受电子和给电子取代的2-甲基氨基苄基-芳基腙杂电性镱配合物的合成
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-05 DOI: 10.1016/j.inoche.2026.116297
Daniil Koshelev , Aleksei Medved'ko , Andrey Vashchenko , Leonid Lepnev , Alexander Goloveshkin , Olga Maloshitskaya , Tatiana Chikineva , Alexander Pavlov , Ilya V. Roslyakov , Valentina Utochnikova
A series of new lanthanide complexes with electron-donating (triphenylamine-, phenylcarbazole-) and electron-withdrawing (benzoxazole-, methyloxodiazole-, and phenyloxodiazole-) substituted Schiff bases ((E)-N-(2-((2-aryloylhydrazono)methyl)phenyl)-4-methylbenzenesulfonamide), designed to enhance charge carrier mobility, have been synthesized and fully characterized as well as the 2 structures of the compounds were established. Heteroleptic complexes with ligands of both classes were obtained during the mixed-ligand method synthesis. Photoluminescence quantum yield of heteroleptic species in contrast to luminescence lifetime was found to be higher than homoleptic ones – up to 1.65%. An 16% improvement in external current efficiency (ECE) in the same OLED heterostructure was shown (ECE up to 140 μW/W) in comparison with homoleptic ones (ECE up to 120 μW/W). This proves the correctness of the approach to improvement of the electroluminescence of the OLED based on the metal complexes.
合成了一系列具有供电子(三苯基胺-、苯基咔唑-)和吸电子(苯并恶唑-、甲基氧恶二唑-和苯并恶二唑-)取代希夫碱((E)- n-(2-(2-芳基腙)甲基苯基)-4-甲基苯磺酰胺)的镧系化合物,以提高载流子迁移率,并对其结构进行了全面表征。混合配体法合成了两类配体的杂电配合物。异眠物种的光致发光量子产率和发光寿命比同眠物种高,可达1.65%。在相同的OLED异质结构下(ECE可达140 μW/W),其外部电流效率(ECE可达120 μW/W)比同质OLED异质结构下(ECE可达120 μW/W)提高16%。这证明了金属配合物改善OLED电致发光性能的方法是正确的。
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引用次数: 0
Synthesis, characterisation, crystal structure of silver and palladium N-heterocyclic carbene complexes, and investigation of their antimicrobial and catalytic activities 银和钯n -杂环碳络合物的合成、表征、晶体结构及其抑菌和催化活性的研究
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-17 DOI: 10.1016/j.inoche.2026.116348
Nazan Kaloğlu , Melda Altıkatoğlu Yapaöz , Thierry Roisnel , Murat Kaloğlu
In this study, three 1,3-disubstituted imidazolium salts as the N-heterocyclic carbene (NHC) precursors were synthesized. Using these salts, air- and moisture-stable three new silver-NHC complexes, and six new PEPPSI-type (PEPPSI = Pyridine Enhanced Pre-catalyst Preparation Stabilization and Initiation) palladium-NHC complexes were prepared. The structures of all compounds were fully characterized by different spectroscopic and analytical techniques. The more detailed structural characterisation of four of the palladium-NHC complexes was determined by single-crystal X-ray diffraction study. The antimicrobial activities all of the compounds were tested against human pathogenic Gram-positive (S. aureus) and Gram-negative (E. coli) bacterial strains, and fungal strain (A. niger) as potential metallopharmaceutical agents. All synthesized compounds exhibited MIC values ranging from 8 to 128 μg/mL in antimicrobial assays, thereby confirming their effectiveness as antimicrobial agents against the tested microorganisms. Moreover, all palladium–NHC complexes were employed as catalysts in the direct arylation of nitrogen-containing five-membered heterocyclic compounds such as 3,5-dimethylisoxazole and 1-methyl-1H-pyrrole-2-carboxaldehyde with (hetero)aryl bromides. The desired arylated products were secured in moderate to good yields at 100 °C with a 0.5 mol% catalyst loading after just 1 h. Under the tested conditions, (hetero)aryl bromides served successfully as arylating reagents, affording selectively C4-arylated isoxazoles and C5-arylated pyrroles in acceptable to high yields.
本研究合成了3种1,3-二取代咪唑盐作为n -杂环碳(NHC)前体。利用这些盐,制备了3种空气和水分稳定的新型银- nhc配合物和6种新型PEPPSI型(PEPPSI =吡啶增强预催化剂制备、稳定和引发)钯- nhc配合物。用不同的光谱和分析技术对化合物的结构进行了全面表征。通过单晶x射线衍射研究确定了四种钯- nhc配合物的更详细的结构特征。所有化合物对人致病性革兰氏阳性菌(金黄色葡萄球菌)、革兰氏阴性菌(大肠杆菌)和真菌(黑曲霉)作为潜在的金属药物进行了抑菌活性测试。所有合成的化合物在抗菌试验中的MIC值在8 ~ 128 μg/mL之间,从而证实了它们作为抗菌药物对被测微生物的有效性。此外,所有钯- nhc配合物都被用作催化剂,用于含氮五元杂环化合物如3,5-二甲基异恶唑和1-甲基- 1h -吡咯-2-甲醛与(杂)芳基溴的直接芳化。在100°C条件下,在0.5 mol%的催化剂负载下,只需1小时,即可获得所需的芳基化产物,收率中等至较高。在测试条件下,(杂)芳基溴成功地作为芳基化试剂,可获得选择性的c4芳基化异唑和c5芳基化吡咯,收率可接受。
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引用次数: 0
Self-assembly and distinct guest-binding behaviors of double helicate Ag2L2 and triple helicate Fe2L3 双螺旋Ag2L2和三螺旋Fe2L3的自组装和不同的客体结合行为
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-06 DOI: 10.1016/j.inoche.2025.116128
Xin-Yi Pei, Juan-Tong Zhao, Wen-Yuan Wu, Sheng-Huan Xu, Min-Yu Liu, Rong Wan
Two novel metallo-organic helicates were synthesized through the self-assembly in acetonitrile solution by C2-symmetric amine 4,4′-(naphthalene-2,7-diylbis(oxy))dianiline, 2-pyridinecarboxaldehyde, and different metal centers: silver (I) trifluoromethanesulfonate (Ag(OTf)) and iron(II) trifluoromethanesulfonate (Fe(OTf)2) respectively. The helicate architectures were confirmed to be double-stranded Ag2L2 and triple-stranded Fe2L3 by 1H NMR spectroscopy, HRMS technology and XRD structural analysis. Further host-guest interactions between the helicates and a number of guest molecules were investigated through 1H NMR experiments. The interaction patterns not only depend on the charge or geometric configuration of guests, but especially on the distinct architecture feature of the two helices with identical ligand. The double helicate with crossed ligand arrangement exhibited significant binding with sodium tetraphenylborate (NaBPh4), primarily attributed to peripheral C-H···π interactions occurring in multi-sites. In contrast, the triple helicate demonstrated notable host-guest interactions with planar 1-hydroxypyrene, mainly arising from single-site C-H···π interactions via complementary arrangement to central groove surrounded by parallel naphthalene groups. Further quantitative binding stoichiometry revealed that all two helicates formed 1:1 host-guest binding with their respective guests.
以c2对称胺4,4′-(萘-2,7-二基双(氧))二苯胺、2-吡啶甲醛和不同的金属中心:银(I)三氟甲烷磺酸盐(Ag(OTf))和铁(II)三氟甲烷磺酸盐(Fe(OTf)2)为原料,在乙腈溶液中自组装合成了两种新型金属有机螺旋。通过1H NMR谱、HRMS技术和XRD结构分析,证实其螺旋结构为双链Ag2L2和三链Fe2L3。通过1H NMR实验进一步研究了螺旋和一些客体分子之间的主-客体相互作用。相互作用模式不仅取决于客体的电荷或几何构型,而且还取决于具有相同配体的两个螺旋的独特结构特征。具有交叉配体排列的双螺旋结构与四苯基硼酸钠(NaBPh4)具有显著的结合,这主要归因于发生在多位点的外周C-H···π相互作用。相比之下,三螺旋结构与平面1-羟基芘表现出明显的主客体相互作用,主要是通过与平行萘基团包围的中心槽的互补排列产生的单位点C-H···π相互作用。进一步的定量结合化学计量学表明,这两种螺旋都与各自的客体形成了1:1的主客体结合。
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引用次数: 0
Herbal carbon dots for wound healing: Bridging traditional phytomedicine with advanced Nanotherapeutics 用于伤口愈合的草药碳点:将传统的植物医学与先进的纳米疗法连接起来
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.inoche.2026.116162
Muskan Leharwani , Harshita Singhai , Umme Hani , Vanitha Innocent Rani , Garima Gupta , Khang Wen Goh , Umesh Kumar Patil , Prashant Kesharwani
Chronic wounds represent a growing global health crisis, driven by complex pathophysiological mechanisms including persistent inflammation, microbial colonization, impaired angiogenesis, and oxidative tissue damage. The conventional treatment often falls short in addressing these multifactorial challenges particularly due to increasing cases antimicrobial resistance and limited capacity for targeted and adaptive interventions. Herbal carbon dots have emerged as a next-generation nanotherapeutic platform representing an elegant fusion of phytomedicine wisdom and responsiveness of modern nanotechnology. The herbal carbon nanodots are generally synthesized through eco-friendly green chemistry from diverse medicinal plant biomass. These ultrasmall, fluorescent nanoparticles retain and transform bioactive motifs properties their botanical precursors as reflected in their antimicrobial, anti-inflammatory, antioxidant, and pro-angiogenic effects, while gaining enhanced cellular uptake, aqueous solubility, and controlled therapeutic release from the nano architecture. This comprehensive review illuminates the mechanistic landscape of herbal carbon dot interventions, spanning intelligent antimicrobial strategies that circumvent resistance pathways, sophisticated stimuli-responsive designs responsive to wound microenvironments, strategic heteroatom doping for enhanced enzymatic mimicry, targeted modulation of inflammatory cascades and angiogenic pathways, and specialized formulations addressing diabetic complications, UV-damaged tissue, chemical burns, and bone-associated wounds. This review also highlights the emerging computational strategies, including machine learning and Bayesian neural networks approaches for synthesis optimization and property prediction of Carbon Nanodots.
慢性伤口是一种日益严重的全球健康危机,由复杂的病理生理机制驱动,包括持续炎症、微生物定植、血管生成受损和氧化组织损伤。常规治疗往往无法应对这些多因素挑战,特别是由于抗菌素耐药性病例不断增加以及有针对性和适应性干预措施的能力有限。草药碳点已经成为下一代纳米治疗平台,代表了植物医学智慧和现代纳米技术的反应性的优雅融合。草药碳纳米点一般是通过生态友好的绿色化学方法从多种药用植物生物质中合成的。这些超小的荧光纳米颗粒保留并转化其植物前体的生物活性基序特性,反映在它们的抗菌、抗炎、抗氧化和促血管生成作用中,同时从纳米结构中获得增强的细胞摄取、水溶性和控制的治疗释放。这篇全面的综述阐明了草药碳点干预的机制景观,包括规避耐药途径的智能抗菌策略,对伤口微环境敏感的复杂刺激反应设计,增强酶模拟的战略性杂原子掺杂,炎症级联反应和血管生成途径的靶向调节,以及针对糖尿病并发症,紫外线损伤组织,化学烧伤的专门配方。以及与骨头有关的伤口。本文还重点介绍了用于碳纳米点合成优化和性能预测的新兴计算策略,包括机器学习和贝叶斯神经网络方法。
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引用次数: 0
Functionalized metal oxide nanoparticles and their applications in bacterial infections, cancer treatment, and gene therapy: A review 功能化金属氧化物纳米颗粒及其在细菌感染、癌症治疗和基因治疗中的应用综述
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.inoche.2026.116149
Niloufar Torabi Fard , Homayon Ahmad Panahi , Elham Reza Soltani , Elham Moniri , Mohammadreza Mahdavijalal
The research community is increasingly focused on functionalized metal oxide nanoparticles (MONPs) due to their innovative biomedical applications, which include combating bacterial infections, supporting cancer treatments, and enhancing gene delivery systems. The unique physicochemical properties of MONPs make them excellent components for designing targeted drug delivery systems (DDSs), as they offer exceptional stability, adjustable sizes and shapes, and versatile surface modification features. MONPs exhibit multiple beneficial characteristics for addressing persistent oncological challenges, as they help resolve drug resistance issues and improve drug delivery performance while reducing adverse effects associated with conventional treatments such as chemotherapy and radiotherapy. Additionally, the controlled generation of reactive oxygen species (ROS) through MONPs provides them with strong antibacterial properties, positioning them as potential solutions against drug-resistant bacterial infections. Gene therapy researchers have also adopted MONPs as efficient non-viral vectors for transporting genetic material, including DNA, CRISPR-Cas9 components, and small interfering RNA, enabling precise gene editing or silencing. The biological interactions of MONPs, along with their therapeutic effects, depend significantly on factors such as particle size, molecular shape, surface charge, and aggregation patterns, highlighting the need for careful design to ensure compatibility with biological systems while minimizing toxicological risks. A comprehensive examination of MONPs synthesis methods and functionalization techniques reveals their biomedical applications, particularly in cancer treatment, antimicrobial solutions, and gene delivery systems. Consequently, MONPs hold great potential to redefine modern medicine through enhanced performance and ongoing innovations.
由于功能化金属氧化物纳米颗粒(MONPs)在生物医学领域的创新应用,包括对抗细菌感染、支持癌症治疗和增强基因传递系统,研究界越来越关注它们。MONPs独特的物理化学性质使其成为设计靶向药物递送系统(dds)的优秀成分,因为它们具有卓越的稳定性,可调节的大小和形状,以及多种表面修饰特性。MONPs在解决持续性肿瘤挑战方面表现出多种有益特性,因为它们有助于解决耐药性问题,改善药物输送性能,同时减少与化疗和放疗等传统治疗相关的不良反应。此外,通过MONPs控制活性氧(ROS)的产生使其具有强大的抗菌性能,使其成为对抗耐药细菌感染的潜在解决方案。基因治疗研究人员还将MONPs作为高效的非病毒载体,用于运输遗传物质,包括DNA、CRISPR-Cas9组分和小干扰RNA,从而实现精确的基因编辑或沉默。MONPs的生物相互作用及其治疗效果在很大程度上取决于诸如颗粒大小、分子形状、表面电荷和聚集模式等因素,因此需要仔细设计以确保与生物系统的相容性,同时将毒理学风险降至最低。对MONPs合成方法和功能化技术的全面研究揭示了它们在生物医学上的应用,特别是在癌症治疗、抗菌溶液和基因传递系统方面。因此,monp具有通过增强性能和持续创新来重新定义现代医学的巨大潜力。
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引用次数: 0
Effect of Cu and Fe Co-doped ZnS nanoparticles for the efficient antibacterial and photocatalytic applications Cu和Fe共掺杂ZnS纳米粒子对高效抗菌和光催化应用的影响
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.inoche.2025.116097
R. Hema Chandrika , S. Stella Mary , A.R. Pavithraa , K. Jothivenkatachalam , Mahalakshmi Ramar
Zinc Sulphide (ZnS) exhibits a wide range of semiconductor properties that can be fine-tuned for optoelectronic purposes, rendering it highly suitable for a variety of applications. However, the wide bandgap of ZnS (3.54–3.91 eV) constrains the light harvesting efficiency, which limits the use of ZnS in photocatalytic applications. Here, we propose a strategy involving dual doping of transition metals, particularly iron and copper on the ZnS surface to enhance the photodegradation efficiency of ZnS. Nanoparticles (NPs) of pure ZnS, Copper doped ZnS (Cu: ZnS), and dual doped ZnS (Cu: Fe: ZnS), were fabricated using 2-Mercaptoethanol (2-ME), by a comprehensible chemical coprecipitation method and characterized prudently by various analytical tools. The structural and morphological features of the prepared nanoparticles were investigated by XRD and SEM. The optical properties were determined using UV- Visible studies, in which Cu: ZnS and Cu: Fe: ZnS nanoparticles showed a drop in the bandgap energy of about 0.78 eV and 0.62 eV respectively, with respect to pure ZnS NPs. The functional properties were observed using FTIR, revealing the functional groups present in the prepared nanoparticles. The results of Raman studies were in close agreement with the XRD results and the Zeta potential analysis described the stability of the prepared ZnS NPs. BET studies exhibited higher surface area around 80.5430 m2/g and 133.3186 m2/g for Cu: ZnS and Cu: Fe: ZnS NPs respectively. Photoluminescence analysis showed blue emission for pure ZnS whereas decrease in intensity for blue as well as blue-green, and green emissions were noticed for both Cu: ZnS and Cu: Fe: ZnS. The synthesized nanoparticles were tested against bacterial activity using agar disc diffusion method which revealed the better antibacterial property in both the doped ZnS NPs. Eventually, the photocatalysts were subjected to the photodegradation of Rhodamine 6G (Rh6G) under visible light, in which Cu: Fe: ZnS NPs showed the higher degradation efficiency of about 83.70 %. EIS was employed to elucidate the relationship between photocatalytic efficiency and charge carrier recombination behaviour.
硫化锌(ZnS)表现出广泛的半导体特性,可以为光电目的进行微调,使其非常适合各种应用。然而,ZnS的宽禁带(3.54 ~ 3.91 eV)限制了其光收集效率,限制了ZnS在光催化应用中的应用。本文提出了一种在ZnS表面掺杂过渡金属,特别是铁和铜的策略,以提高ZnS的光降解效率。用2-巯基乙醇(2-ME)制备了纯ZnS、铜掺杂ZnS (Cu: ZnS)和双掺杂ZnS (Cu: Fe: ZnS)纳米粒子(NPs),并采用易懂的化学共沉淀法对其进行了表征。采用XRD和SEM对制备的纳米颗粒的结构和形貌进行了表征。紫外可见光谱研究表明,Cu: ZnS和Cu: Fe: ZnS纳米粒子的带隙能比纯ZnS纳米粒子分别下降了0.78 eV和0.62 eV。利用红外光谱(FTIR)观察了纳米颗粒的功能性质,揭示了纳米颗粒中存在的官能团。Raman研究结果与XRD结果吻合较好,Zeta电位分析描述了制备的ZnS NPs的稳定性。BET研究表明,Cu: ZnS和Cu: Fe: ZnS NPs的比表面积分别为80.5430 m2/g和133.3186 m2/g。光致发光分析表明,纯ZnS的光致发光呈蓝色,而Cu: ZnS和Cu: Fe: ZnS的光致发光呈蓝色和蓝绿色,Cu: ZnS和Cu: Fe: ZnS的光致发光呈绿色。采用琼脂盘扩散法对合成的纳米粒子进行了细菌活性测试,结果表明,两种掺杂的ZnS纳米粒子都具有较好的抗菌性能。最后,光催化剂在可见光下对罗丹明6G (Rh6G)进行了光降解,其中Cu: Fe: ZnS NPs的降解效率较高,约为83.70%。利用EIS分析了光催化效率与载流子复合行为之间的关系。
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引用次数: 0
Bifunctional interface engineering for stable perovskite photovoltaics: Synergistic crystallization and defect passivation with a pyridine-3,5-dicarboxylic acid interlayer 稳定钙钛矿光伏的双功能界面工程:吡啶-3,5-二羧酸中间层的协同结晶和缺陷钝化
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.inoche.2026.116210
Xiao Wang, Yu Zhang, Donghui Wang, Yongqi Duan, Yuekai Zhao, Tao Xue, Kunping Guo, Jin Huang, Fanghui Zhang
In inorganic perovskite solar cells (IPSCs), interfacial stability and defect passivation remain key challenges for achieving higher photovoltaic performance. Here, we propose a buried interfacial molecular engineering strategy using pyridine-3,5-dicarboxylic acid (PDC) as a bifunctional passivator to simultaneously improve crystallinity and suppress defects. The carboxylic groups of PDC chemically anchor onto the TiO2 surface through esterification with surface hydroxyls, forming a robust interfacial layer, while the nitrogen atom in the pyridine ring coordinates with undercoordinated Pb2+ ions in the perovskite absorber. This dual interaction effectively passivates defects on both TiO2 and perovskite surfaces, facilitating efficient electron extraction, improving film crystallinity, and suppressing nonradiative recombination. As a result, the PDC-modified devices deliver a significantly enhanced power conversion efficiency of 14.05%, compared to 9.81% for the control devices, representing an improvement of over 43% under standard AM 1.5G illumination. In addition, the PDC-treated devices exhibit markedly improved environmental and mechanical stability, retaining approximately 90% of their initial efficiency after 500 h of continuous operation without encapsulation. This work demonstrates an effective interfacial molecular engineering strategy for simultaneously boosting efficiency and long-term stability in inorganic perovskite solar cells.
在无机钙钛矿太阳能电池(IPSCs)中,界面稳定性和缺陷钝化仍然是实现更高光伏性能的关键挑战。在此,我们提出了一种以吡啶-3,5-二羧酸(PDC)作为双功能钝化剂的埋藏界面分子工程策略,以同时提高结晶度和抑制缺陷。PDC的羧基通过与表面羟基的酯化作用化学锚定在TiO2表面,形成坚固的界面层,而吡啶环上的氮原子在钙钛矿吸收剂中与Pb2+离子配位。这种双重相互作用有效地钝化了TiO2和钙钛矿表面的缺陷,促进了有效的电子提取,提高了薄膜的结晶度,并抑制了非辐射复合。因此,与控制器件的9.81%相比,pdc改进器件的功率转换效率显著提高了14.05%,在标准AM 1.5G照明下提高了43%以上。此外,经过pdc处理的器件表现出明显改善的环境和机械稳定性,在没有封装的情况下连续运行500小时后,保持了大约90%的初始效率。这项工作展示了一种有效的界面分子工程策略,可以同时提高无机钙钛矿太阳能电池的效率和长期稳定性。
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引用次数: 0
Metal coordination geometry-dependent catalytic performance: Two cobalt complexes for sulfide oxidation reaction 金属配位几何依赖性催化性能:两种钴配合物对硫化物氧化反应的催化作用
IF 5.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-01-22 DOI: 10.1016/j.inoche.2026.116206
Chen-Lu Zhang , Yu-Yao Li , Xiao-Hui Li , Zhi-Xuan An , Zhong Zhang , Xiu-Li Wang
In this work, two new metal-organic complexes (MOCs), namely [Co(L)(BTEC)0.5]·H2O (1) and [Co(L)(2,2-BDC)]·H2O (2) (L = (E)-4,4′-(diazene-1,2-diyl)bis(N-(pyridin-3-yl)benzamide); H4BTEC = benzene-1,2,4,5-tetracarboxylic acid; 2,2-BDC = [1,1′-biphenyl]-2,2′-dicarboxylic acid) were synthesized under hydrothermal conditions by a dual-ligand strategy, which were characterized by IR, PXRD, TG and single crystal X-ray diffraction. The diamide derivative L was used as the main ligand, while the tetradentate H4BTEC and the bidentate 2,2-BDC were employed as the secondary ligands respectively, to regulate the coordination geometry of the central Co atoms in the title MOCs. In the sulfide oxidation reaction, complexes 1 and 2 can act as heterogeneous catalysts with highly catalytic activity and excellent sulfoxide selectivity. Notably, the distinct coordination geometry of the Co centers in complexes 1 and 2 resulted in different accessibility to catalytic active sites, leading to distinct catalytic effects. For methyl phenyl thioether oxidation, complex 1 with a four-coordinated distorted tetrahedral Co(II) configuration (τ₄ = 0.765) achieved 99% conversion (sel. 99%), while complex 2 with a four-coordinated more slightly distorted tetrahedral Co(II) configuration (τ₄ = 0.809) showed 94% conversion (sel. 98%). The influence of different metal coordination geometry in the complexes on their catalytic effect was investigated, which provide meaningful guidance for the design and synthesis of efficient heterogeneous MOCs catalysts.
本文研究了两种新型金属有机配合物(MOCs),即[Co(L)(BTEC)0.5]·H2O(1)和[Co(L)(2,2- bdc)]·H2O (2) (L = (E)-4,4 ' -(二氮-1,2-二基)双(N-(吡啶-3-基)苯酰胺);苯-1,2,4,5-四羧酸;采用双配体策略在水热条件下合成了2,2- bdc =[1,1 ' -联苯]-2,2 ' -二羧酸),并用IR、PXRD、TG和单晶x射线衍射对其进行了表征。二胺衍生物L作为主配体,四齿H4BTEC和双齿2,2- bdc分别作为辅配体,调节标题moc中中心Co原子的配位几何。在硫化物氧化反应中,配合物1和2可作为多相催化剂,具有较高的催化活性和优良的亚砜选择性。值得注意的是,配合物1和2中Co中心的配位几何形状不同,导致其对催化活性位点的可达性不同,从而产生不同的催化效果。对于甲基苯基硫醚氧化,具有四配位畸变四面体Co(II)构型的配合物1 (τ₄= 0.765)达到99%的转化率(sel)。而具有四配位更轻微畸变的四面体Co(II)构型的配合物2 (τ₄= 0.809)的转化率为94% (sel。98%)。研究了配合物中不同金属配位几何形状对其催化效果的影响,为设计和合成高效的多相MOCs催化剂提供了有意义的指导。
{"title":"Metal coordination geometry-dependent catalytic performance: Two cobalt complexes for sulfide oxidation reaction","authors":"Chen-Lu Zhang ,&nbsp;Yu-Yao Li ,&nbsp;Xiao-Hui Li ,&nbsp;Zhi-Xuan An ,&nbsp;Zhong Zhang ,&nbsp;Xiu-Li Wang","doi":"10.1016/j.inoche.2026.116206","DOIUrl":"10.1016/j.inoche.2026.116206","url":null,"abstract":"<div><div>In this work, two new metal-organic complexes (MOCs), namely [Co(L)(BTEC)<sub>0.5</sub>]·H<sub>2</sub>O (<strong>1</strong>) and [Co(L)(2,2-BDC)]·H<sub>2</sub>O (<strong>2</strong>) (L = (<em>E</em>)-4,4′-(diazene-1,2-diyl)bis(<em>N</em>-(pyridin-3-yl)benzamide); H<sub>4</sub>BTEC = benzene-1,2,4,5-tetracarboxylic acid; 2,2-BDC = [1,1′-biphenyl]-2,2′-dicarboxylic acid) were synthesized under hydrothermal conditions by a dual-ligand strategy, which were characterized by IR, PXRD, TG and single crystal X-ray diffraction. The diamide derivative L was used as the main ligand, while the tetradentate H<sub>4</sub>BTEC and the bidentate 2,2-BDC were employed as the secondary ligands respectively, to regulate the coordination geometry of the central Co atoms in the title MOCs. In the sulfide oxidation reaction, complexes <strong>1</strong> and <strong>2</strong> can act as heterogeneous catalysts with highly catalytic activity and excellent sulfoxide selectivity. Notably, the distinct coordination geometry of the Co centers in complexes <strong>1</strong> and <strong>2</strong> resulted in different accessibility to catalytic active sites, leading to distinct catalytic effects. For methyl phenyl thioether oxidation, complex <strong>1</strong> with a four-coordinated distorted tetrahedral Co(II) configuration (τ₄ = 0.765) achieved 99% conversion (sel. 99%), while complex <strong>2</strong> with a four-coordinated more slightly distorted tetrahedral Co(II) configuration (τ₄ = 0.809) showed 94% conversion (sel. 98%). The influence of different metal coordination geometry in the complexes on their catalytic effect was investigated, which provide meaningful guidance for the design and synthesis of efficient heterogeneous MOCs catalysts.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"186 ","pages":"Article 116206"},"PeriodicalIF":5.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146096019","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
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Inorganic Chemistry Communications
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