Inorganic Chemistry Communications最新文献

Development of starch/whey protein isolate biofilm incorporated with silver oxide nanoparticles: A multifunctional antioxidant, antibacterial, photocatalytic, and anticancer agent 含有氧化银纳米颗粒的淀粉/乳清分离蛋白生物膜的开发：一种多功能抗氧化、抗菌、光催化和抗癌剂

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-28 DOI: 10.1016/j.inoche.2024.113661

Ankit Dhayal , Harish Kumar , Shaurya Prakash , Antresh Kumar , Mettle Brahma , Mulaka Maruthi

A novel multifunctional biofilm was developed based on starch/whey protein isolate (WPI) combined with Ag₂O nanoparticles (NPs). The biofilm was synthesized via the Lee-Meisel method, facilitating the production of silver nanoparticles. The resulting composite exhibits promising properties as an antioxidant, antibacterial, photocatalytic, and anticancer agent. The effect of different concentrations of Ag₂O NPs was thoroughly investigated. The biofilm was comprehensively characterized, including thermal stability (TGA/DTA), light transmittance, film broadness, and water absorption capacity. X-ray diffraction (XRD) analysis and imaging studies were performed to assess the structural integrity and morphology of the biofilm. Dampness uptake and water vapor permeability studies were also conducted to evaluate the biofilm’s potential for real-world applications. Major weight loss of all three biofilms takes from 40 to 200 °C. The XRD pattern proves the presence of cubic and hexagonal phases of Ag₂O NPs in biofilm. The 1 % Ag₂O NPs showed higher cytotoxicity against A549 cells than 2 % Ag₂O NPs with IC50 values of 15.66 ± 0.9 µg/mL and 32.14 ± 0.6 µg/mL, respectively. In Vero cells, 2 % Ag₂O NPs showed the higher cytotoxicity with IC50 value 131.3 ± 0.3 µg/mL, followed by 1 % Ag₂O NPs (IC50 = 185.6 ± 0.3 µg/mL). St/WPI/Ag₂O 2 % shows better DPPH scavenging action, ranging from 70–73 %. The antibacterial activity of biofilm was investigated against S. aureus, E. coli, and C. albicans. The multi-functionality and biocompatibility of the film open new pathways for its use in biomedical, food packaging, bio-degradable plastic, and environmental fields.

以淀粉/乳清分离蛋白（WPI）与Ag2O纳米颗粒（NPs）结合制备了一种新型多功能生物膜。采用Lee-Meisel法合成生物膜，有利于银纳米颗粒的制备。所得到的复合材料具有良好的抗氧化、抗菌、光催化和抗癌性能。深入研究了不同浓度Ag2O NPs的影响。对生物膜进行热稳定性（TGA/DTA）、透光性、膜宽、吸水能力等综合表征。通过x射线衍射（XRD）分析和成像研究来评估生物膜的结构完整性和形态。还进行了吸湿性和水蒸气渗透性研究，以评估生物膜在实际应用中的潜力。所有三种生物膜的主要减重需要从40°C到200°C。XRD谱图证实了Ag2O纳米颗粒在生物膜中存在立方相和六方相。1% Ag2O NPs对A549细胞的细胞毒性高于2% Ag2O NPs， IC50值分别为15.66±0.9µg/mL和32.14±0.6µg/mL。在Vero细胞中，2% Ag2O NPs表现出较高的细胞毒性，IC50值为131.3±0.3µg/mL，其次是1% Ag2O NPs （IC50值为185.6±0.3µg/mL）。St/WPI/Ag2O 2%对DPPH的清除效果较好，清除效果在70 ~ 73%之间。研究了生物膜对金黄色葡萄球菌、大肠杆菌和白色念珠菌的抑菌活性。薄膜的多功能性和生物相容性为其在生物医学、食品包装、生物降解塑料和环境等领域的应用开辟了新的途径。

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引用次数: 0

Exploring chemical, physical, and biosynthesis methods for ZnO/SiO2: Synthesis strategies and applications 探索ZnO/SiO2的化学、物理和生物合成方法：合成策略和应用

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-28 DOI: 10.1016/j.inoche.2024.113659

Fellia Rizar Syahnur , Muhamad Diki Permana , Rifky Adhia Pratama , Yusi Deawati , M. Lutfi Firdaus , Diana Rakhmawaty Eddy , Iman Rahayu

ZnO/SiO₂ composites have emerged as highly promising materials due to their exceptional properties, including high conductivity, thermal stability, and superior optical performance. This review marks the first comprehensive analysis of three primary synthesis approaches—chemical, physical, and biosynthesis methods—highlighting their strengths and limitations. A detailed comparison is provided, focusing on how key parameters, such as pH, temperature, and ZnO/SiO₂ composition ratio, critically influence the size, morphology, and structural properties of the composites. The review identifies significant opportunities for optimizing synthesis processes to achieve desired functionalities. Moreover, the study examines the composites’ potential applications, emphasizing photocatalysis for environmental remediation, enhanced oil recovery processes, and antibacterial activity for biomedical purposes. By offering an in-depth understanding of synthesis strategies and critical parameters, this review is a foundational guide for future research and industrial advancements in developing high-performance ZnO/SiO₂ composites.

ZnO/SiO2复合材料由于其优异的性能，包括高导电性、热稳定性和优异的光学性能，成为一种非常有前途的材料。本文首次全面分析了三种主要的合成方法——化学、物理和生物合成方法，并强调了它们的优势和局限性。详细比较了pH、温度和ZnO/SiO2组成比等关键参数对复合材料尺寸、形貌和结构性能的影响。该综述确定了优化合成过程以实现所需功能的重要机会。此外，该研究还探讨了复合材料的潜在应用，强调了光催化在环境修复、提高石油采收率过程和生物医学用途的抗菌活性方面的应用。通过深入了解合成策略和关键参数，本文综述为未来研究和开发高性能ZnO/SiO2复合材料提供了基础指导。

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引用次数: 0

Synthesis of green emissive Plectranthus scutellarioides carbon dots for sustainable and label-free detection of phytohormone indole-3-acetic acid 绿色发射黄芩碳点的合成及其对植物激素吲哚-3-乙酸的可持续无标记检测

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-27 DOI: 10.1016/j.inoche.2024.113660

Juhi Bhadresh Raval , Vaibhavkumar N. Mehta , Sanjay Jha , Tae Jung Park , Suresh Kumar Kailasa

Plectranthus scutellarioides is commonly known as painted neetle or coleus, and widely employed in the Indian Ayurveda for several medical applications. In this work, green light emitting carbon dots (CDs) were fabricated using Plectranthus scutellarioides extract. The synthesized Plectranthus scutellarioides CDs (PS-CDs), possess green fluorescence properties, which was confirmed by UV-lamp at 365 nm. The fluorescent PS-CDs exhibit a pronounced emission at 530 nm when excited at a wavelength of 450 nm. As synthesized probe was stable for 30 days and was having the quantum yield of 21.7 %. The probe was used for the qualitative determination of indole-3-acetic acid (IAA) hormone. The probe depicts a good limit of detection of 0.0421 µM with a linear range of 0.05–2.5 µM for IAA sensing. The real sample analysis was performed in vegetable samples, showing good recoveries, which were well agreed with high performance liquid chromatographic technique analysis.

黄花针通常被称为彩针或彩针，在印度阿育吠陀中被广泛用于几种医学应用。本研究以黄芩提取物为原料制备了绿色发光碳点。合成的黄芩CDs （PS-CDs）具有绿色荧光特性，并在365 nm紫外灯下进行了验证。在450nm波长激发下，荧光PS-CDs在530nm处表现出明显的发射。该探针在30天内稳定存在，量子产率为21.7%。该探针用于吲哚-3-乙酸（IAA）激素的定性测定。该探针具有0.0421µM的良好检测限，线性范围为0.05 ~ 2.5µM，用于IAA传感。对蔬菜样品进行了实样分析，显示出良好的回收率，与高效液相色谱技术分析结果一致。

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引用次数: 0

Facile hydrothermal synthesis of Cu doped MoS2 nanoparticles for enhanced dye-sensitized solar cell performance 水热合成铜掺杂二硫化钼纳米颗粒增强染料敏化太阳能电池性能

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113653

S. Sangeethavanathi , P. Gowthaman , S. Vigneswaran

This study presents a facile, scalable, and cost-effective hydrothermal method for synthesizing Cu doped MoS₂ nanoparticles as efficient counter electrodes for dye-sensitized solar cells (DSSCs). MoS₂ nanoparticles were doped with Cu at 5 and 10 mol% concentrations. The structural, morphological, and optoelectronic properties of the synthesized MoS₂:Cu nanoparticles were systematically characterized using a suite of microscopic and spectroscopic techniques. DSSCs were fabricated using pure MoS₂, MoS₂@Cu 5 mol%, and MoS₂@Cu 10 mol% as counter electrodes, and their photovoltaic performance was evaluated. The DSSC with pure MoS₂ counter electrode exhibited a short-circuit current density (Jsc) of 11.02 mA/cm², an open-circuit voltage (Voc) of 0.70 V, a fill factor (FF) of 70 %, and a power conversion efficiency (PCE) of 5.39 %. The MoS₂@Cu 5 mol% electrode demonstrated enhanced performance with Jsc = 13.04 mA/cm², Voc = 0.71 V, FF = 72 %, and PCE = 6.55 %. Notably, the MoS₂@Cu 10 mol% electrode exhibited superior performance, achieving Jsc = 14.09 mA/cm², Voc = 0.73 V, FF = 81 %, and a remarkable PCE of 8.12 %. This significant enhancement in photovoltaic parameters is attributed to the improved photovoltaic performance and charge transport properties of the Cu doped MoS₂ nanoparticles. Our findings demonstrate the potential of Cu-doped MoS₂ as an effective and low-cost alternative to conventional counter electrode materials in DSSCs, paving the way for further optimization and scalable production of high-efficiency solar cells.

本研究提出了一种简单、可扩展、经济高效的水热方法来合成Cu掺杂的MoS2纳米颗粒，作为染料敏化太阳能电池（DSSCs）的有效对电极。以5%和10%浓度的铜掺杂二硫化钼纳米粒子。利用一套显微和光谱技术系统地表征了合成的MoS2:Cu纳米颗粒的结构、形态和光电子特性。以纯二硫化钼MoS2@Cu 5 mol%和MoS2@Cu 10 mol%为对电极制备DSSCs，并对其光伏性能进行了评价。采用纯二硫化钼对电极的DSSC的短路电流密度（Jsc）为11.02 mA/cm2，开路电压（Voc）为0.70 V，填充系数（FF）为70%，功率转换效率（PCE）为5.39%。当Jsc = 13.04 mA/cm2, Voc = 0.71 V, FF = 72%, PCE = 6.55%时，MoS2@Cu 5 mol%电极的性能得到了提高。值得注意的是，MoS2@Cu 10 mol%的电极表现出优异的性能，Jsc = 14.09 mA/cm2, Voc = 0.73 V, FF = 81%， PCE为8.12%。这种光伏参数的显著增强归因于Cu掺杂的MoS2纳米颗粒的光伏性能和电荷输运特性的改善。我们的研究结果证明了cu掺杂MoS2作为DSSCs中传统对电极材料的有效和低成本替代品的潜力，为进一步优化和大规模生产高效太阳能电池铺平了道路。

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引用次数: 0

Synthesis and characterization of Z-scheme based MoS2/ GQD/Ag nanocomposite for degradation of organic pollution 基于Z-scheme的MoS2/ GQD/Ag纳米复合材料的合成与表征

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113637

Hakimeh Teymourinia , Mojtaba Naserzadeh , Yavar Ahmadi , Ali Ramazani

The constituent composition of heterojunction composite materials can be changed to effectively segregate photogenerated charge carriers and to significantly advance the process of photocatalytic destruction of resistant pollutants under visible light irradiation. This work presents the hydrothermal synthesis of a novel ternary heterojunction composite, MoS₂/GQD/Ag NPs (MS/GQD/Ag) and its photocatalytic performance in the degradation of organic dyes. In the synthesized material, the Z-scheme heterojunction demonstrated enhanced visible light-driven catalytic activity by effectively separating electrons from holes (e⁻/h⁺) and producing reactive oxygen species. In addition to producing reactive radicals, a variety of surface-bound redox cycles are important in the transmission of photogenerated charge carriers. Rhodamin B (RhB) photocatalytic degradation by MS/GQD/Ag under visible light irradiation was investigated, and results demonstrated 99 % RhB was decomposed using 0.1 g/L of ternary composite during 75 min. Experiments using scavenging techniques verified the concurrent activity of hydroxyl and superoxide radical species in the direction of degradation. The structural stability, recyclability for four cycles, and the pH effect in degradation efficiency of the synthesized photocatalyst illuminate its potential application for the degradation of organic pollutants for water treatment.

改变异质结复合材料的组成，可以有效分离光生载流子，显著推进可见光照射下光催化破坏抗性污染物的进程。本文报道了一种新型三元异质结复合材料MoS2/GQD/Ag NPs （MS/GQD/Ag）的水热合成及其光催化降解有机染料的性能。在合成材料中，z型异质结通过有效地将电子与空穴（e−/h+）分离并产生活性氧，表现出增强的可见光驱动催化活性。除了产生活性自由基外，各种表面结合的氧化还原循环在光生电荷载流子的传输中也很重要。研究了MS/GQD/Ag在可见光照射下对Rhodamin B （RhB）的光催化降解，结果表明，在0.1 g/L三元复合材料的作用下，Rhodamin B在75 min内降解率为99%。通过清除实验验证了羟基和超氧自由基在降解方向上的同步活性。合成的光催化剂的结构稳定性、四次循环可回收性以及pH对降解效率的影响表明其在水处理中降解有机污染物的潜在应用。

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引用次数: 0

Recent advances in biotechnology applications of bacteriocin-selenium nanoconjugates 细菌素-硒纳米偶联物的生物技术应用研究进展

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113641

Sana M.H. Al-Shimmary , Amina N. Al-Thwani

Owing to the lack of progress in the development of antibiotics, there is a pressing need for innovative approaches to treat microbial infections. Nanotechnology and natural peptides are innovative approaches that can potentially replace traditional antimicrobial agents. Selenium nanoparticles (SeNPs) have the potential to not only be antimicrobial but also serve as anticancer agents when conjugated with bacteriocin. This study aimed to synthesize a novel bacteriocin-selenium nanoconjugate and investigated its biomedical applications. In particular, the bacteriocin-selenium nanoconjugates were characterized via UV–Vis spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction. Our study involved testing the antibacterial activity of a bacteriocin-selenium nanoconjugate against the growth of the gram-negative bacterium P. aeruginosa. The antibacterial activity of the preparation was studied via the disk diffusion method, and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were calculated. Rupture of the bacterial cell wall was confirmed by scanning electron microscopy (SEM). Additionally, we determined the antifungal activity against Candida albicans and Candida tropicalis and the cytotoxic effects on the MC3T3-E1 cell line. The results showed that the action of SeNPs in combination with bacteriocin against the growth of the bacteria Pseudomonas aeruginosa and Candida species has a synergistic effect. The inhibition zone diameter for P. aeruginosa was 33 mm ± SD, and the MIC and MBC were 15.625 µg/ml and 31.25 µg/ml, respectively. Additionally, the inhibition zone diameters for Candida albicans and Candida tropicalis were 52 mm and 47 mm (±SD), respectively. The cytotoxic effect of the bacteriocin-selenium nanoconjugate on the MC3T3-E1 cell line was 84.97 %. These findings suggest that these complexes could be used as safe alternatives in biomedical applications.

由于抗生素的开发缺乏进展，迫切需要创新的方法来治疗微生物感染。纳米技术和天然多肽是有可能取代传统抗菌剂的创新方法。硒纳米颗粒（SeNPs）不仅具有抗菌作用，而且与细菌素结合后还具有抗癌作用。本研究旨在合成一种新型细菌素-硒纳米缀合物并探讨其在生物医学上的应用。通过紫外可见光谱、傅里叶变换红外光谱、扫描电镜和x射线衍射对细菌素-硒纳米缀合物进行了表征。我们的研究包括测试细菌素-硒纳米偶联物对革兰氏阴性细菌铜绿假单胞菌生长的抗菌活性。采用圆盘扩散法研究了该制剂的抑菌活性，并计算了其最小抑菌浓度（MIC）和最小杀菌浓度（MBC）。扫描电镜（SEM）证实细菌细胞壁破裂。此外，我们还测定了其对白色念珠菌和热带念珠菌的抗真菌活性以及对MC3T3-E1细胞株的细胞毒作用。结果表明，SeNPs与细菌素联合对铜绿假单胞菌和假丝酵母菌的生长具有协同作用。对铜绿假单胞菌的抑制带直径为33 mm±SD， MIC和MBC分别为15.625µg/ml和31.25µg/ml。对白色念珠菌和热带念珠菌的抑制区直径分别为52 mm和47 mm（±SD）。细菌素-硒纳米偶联物对MC3T3-E1细胞株的细胞毒作用为84.97%。这些发现表明这些复合物可以作为生物医学应用的安全替代品。

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引用次数: 0

Waste biomass derived carbon-based materials for electrochemical detection of pesticides from real samples 废弃生物质衍生碳基材料用于实际样品中农药的电化学检测

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113649

Selva Bilge , Saima Aftab , Yusuf Osman Donar , Beyza Özoylumlu , Ali Sınağ

Using carbon-based materials obtained from waste biomass for electrochemical determination of pesticides from real samples has always been promising in terms of environmental monitoring, agricultural sustainability, and the possibility of rapid analysis in the field. In the process recorded to date, waste biomass, which includes a wide range of agricultural, animal, organic, and domestic wastes, has served as a renewable and sustainable precursor for carbon materials and has provided economic and environmental contributions compared to traditional carbon sources. This review has highlighted the challenges, advantages, and recent developments in the field of using carbon materials prepared from waste biomass as electrode modification materials for pesticide detection in complex environmental matrices. On the other hand, the properties of biochar and the preparation techniques of biochar have been discussed in detail in this study. It has also been mentioned that the preparation process of biochar is an important factor affecting the electrochemical performance and that experimental parameters such as temperature, heating rate, and biomass type play a critical role in determining biochar’s structural and electrochemical properties. The studies conducted in this field in recent years and their details (carbon material preparation conditions, preparation techniques, and electrochemical data) are described and examined.

利用废弃生物质中获得的碳基材料对真实样品中的农药进行电化学测定，在环境监测、农业可持续性和现场快速分析的可能性方面一直具有前景。在迄今为止记录的过程中，废物生物质，包括广泛的农业，动物，有机和家庭废物，作为碳材料的可再生和可持续的前体，与传统的碳源相比，提供了经济和环境贡献。本文综述了利用废弃生物质制备的碳材料作为电极修饰材料用于复杂环境基质中农药检测的挑战、优势和最新进展。另一方面，对生物炭的性质和制备技术进行了详细的探讨。生物炭的制备工艺是影响其电化学性能的重要因素，而温度、升温速率和生物质类型等实验参数对生物炭的结构和电化学性能起着至关重要的作用。介绍了近年来在该领域进行的研究及其细节（碳材料制备条件、制备技术和电化学数据）。

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引用次数: 0

Seebeck coefficient and thermal properties of graphene oxide doped calcium cobalt copper oxide nanoceramics 氧化石墨烯掺杂钙钴氧化铜纳米陶瓷的塞贝克系数和热性能

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113619

Serhat Koçyiğit

In this study, graphene oxide undoped and doped Ca3Co3.8Cu0.2Ox nanoceramic materials were produced using the sol–gel method. After achieving gelation of the mixtures produced via this method, calcination was carried out to remove organic structures. The nanoceramic powders obtained from calcination were compressed as pellets, which were sintered to ensure the fusion of the structures. Graphene oxide undoped and doped pellets were characterized, and the Seebeck coefficient and thermal conductivity as a function of temperature were determined for these samples using a physical properties measurement system device. Upon examining the characterizations, it was generally observed that the crystallite sizes decreased with the addition of graphene oxide, which was consistent with the XRD and SEM results. When the peaks in the FTIR results were compared with the compound bond structures in the XRD results, they were found to be compatible in both samples. Additionally, when the EDX and mapping results were examined, the elements were found to be consistent with the XRD, FTIR and TGA results. TGA analysis demonstrated that graphene oxide doping shifted decomposition temperatures and enhanced combustion efficiency by reducing carbon content. BET results demonstrated that graphene oxide doping significantly increased the surface area and alters the pore structure. In the Seebeck coefficient results, the addition of graphene oxide provided a 1.3-fold advantage at room temperature, and a 10-fold advantage in thermal conductivity was observed with the addition of graphene oxide.

本研究采用溶胶-凝胶法制备了未掺杂和掺杂的氧化石墨烯Ca3Co3.8Cu0.2Ox纳米陶瓷材料。通过这种方法产生的混合物达到凝胶化后，进行煅烧以去除有机结构。将煅烧得到的纳米陶瓷粉末压缩成球团，进行烧结以保证结构的融合。对未掺杂和掺杂的氧化石墨烯颗粒进行了表征，并利用物理性质测量系统装置测定了这些样品的塞贝克系数和导热系数随温度的函数。通过对表征的考察，我们普遍观察到，随着氧化石墨烯的加入，晶粒尺寸减小，这与XRD和SEM的结果一致。当FTIR结果中的峰与XRD结果中的复合键结构进行比较时，发现它们在两种样品中是相容的。此外，当检测EDX和测图结果时，发现元素与XRD， FTIR和TGA结果一致。TGA分析表明，氧化石墨烯的掺杂通过降低碳含量改变了分解温度，提高了燃烧效率。BET结果表明，氧化石墨烯的掺杂显著增加了比表面积，改变了孔隙结构。在塞贝克系数的研究结果中，氧化石墨烯的加入在室温下提供了1.3倍的优势，在导热性方面，氧化石墨烯的加入提供了10倍的优势。

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引用次数: 0

Cu-ZnO/CuO porous heterostructures for adsorption of lead ion Cu-ZnO/CuO多孔异质结构对铅离子的吸附

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113622

Zufan Gebrekidan , C.R. Ravikumar , Syed Khasim , S. Giridhar Reddy , Dereje Tsegaye , Buzuayehu Abebe

The pure ZnO and Cu-ZnO/CuO (CuZC) heterostructures had been successfully synthesized using an orange fruit peel extract-based solution combustion synthesis approach. The XRD result revealed the wurtizite phase structure of ZnO NPs with a crystallite size of 12 nm for the CuZC heterostructures. The indirect UV–vis-DRS analysis revealed the band gap energy of ZnO NPs and CuZC heterostructure to be 3.16 and 2.95 eV, respectively. Porous morphology and absence of impurities were confirmed from the FESEM-EDS and TEM/HRTEM analyses. The lead (Pb) ion adsorption potential of NPs was analyzed by inductively coupled plasma-optical emission spectrometry (ICP-OES) technique. The removal efficiency for CuZC heterostructure at an initial Pb ion concentration of 20 mg/L is 96.3 %. Based on the adsorption kinetics and isotherm models fitting value, dominance of the chemisorption adsorption process was confirmed. The doped NPs have the potential to be used as an effective and favorable adsorbent material for remediation of heavy metal ions from water solutions.

采用橘皮萃取物为基础的溶液燃烧合成方法，成功合成了纯ZnO和Cu-ZnO/CuO （CuZC）异质结构。XRD结果表明，CuZC异质结构ZnO NPs为纤溶石相结构，晶粒尺寸为12 nm。间接UV-vis-DRS分析显示ZnO NPs和CuZC异质结构的能带能分别为3.16和2.95 eV。通过FESEM-EDS和TEM/HRTEM分析证实了多孔形貌和无杂质。采用电感耦合等离子体发射光谱法（ICP-OES）分析了NPs的铅（Pb）离子吸附电位。在Pb离子初始浓度为20 mg/L时，CuZC异质结构的去除率为96.3%。根据吸附动力学和等温线模型拟合值，确定了化学吸附吸附过程的优势。掺杂的NPs有潜力作为一种有效的、有利的吸附材料用于修复水中重金属离子。

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引用次数: 0

Electronegativity difference regulates the synergistic effect of dual-metal active sites for improved photodegradation of tetracycline 电负性差异调节双金属活性位点的协同作用，改善四环素的光降解

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2024-11-26 DOI: 10.1016/j.inoche.2024.113613

Ziyou Xiang, Xiaoqing Zhu, Huimin Yi, Ming Li, Youji Li

It is extremely necessary to reveal the synergistic effect of dual-active sites via the typical metallic atoms anchored on carbon nitride (CN) carrier, and the controllable synergistic effect is also a novel approach to regulate the neighboring coordination environment. Herein, a series of dual-active site photocatalysts are papered by doping Ag, Fe or Zn atoms due to their different electronegativity. Comprehensive characterizations demonstrate that embedding of Ag/Zn heteroatoms with significant electronegativity difference can regulate the synergistic effect of dual-active sites, which is beneficial for tailoring electronic structures, suppressing the recombination of photogenerated charges, and expanding the absorption range of visible light. Then, the Ag and Zn dual-metal atoms co-doped CN (Ag/Zn-CN) photocatalyst exhibits higher TC degradation rate (90.32 % at 90 min) and photoelectrochemical performance than the Ag/Fe-CN and Zn/Fe-CN, the first-order kinetic constant up to 0.041 min⁻¹ at t = 0 ∼ 50 min. This work provides a versatile avenue for the rational regulation of the coordination environment of dual-metal active site photocatalysts by embedding different neighboring atoms.

通过典型的金属原子锚定氮化碳（CN）载体来揭示双活性位点的协同效应是非常必要的，而可控的协同效应也是调节相邻配位环境的一种新途径。本文利用银、铁、锌原子的不同电负性，通过掺杂制备了一系列双活性位光催化剂。综合表征表明，包埋电负性差异显著的Ag/Zn杂原子可以调节双活性位点的协同效应，有利于调整电子结构，抑制光生电荷的重组，扩大可见光的吸收范围。然后，Ag和Zn双金属原子共掺杂CN （Ag/Zn-CN）光催化剂表现出比Ag/Fe-CN和Zn/Fe-CN更高的TC降解率（90 min时90.32%）和光电化学性能，在t = 0 ~ 50 min时一级动力学常数高达0.041 min−1。该工作为通过嵌入不同相邻原子来合理调节双金属活性位点光催化剂的配位环境提供了多种途径。

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引用次数: 0