Chemical Physics Impact最新文献_第8页

Platinum nanoclusters incorporated on zinc oxide nanosheets with enhanced mass activity for efficient hydrogen production 铂纳米团簇结合在氧化锌纳米片上，具有增强的质量活性，可以有效地生产氢

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-28 DOI: 10.1016/j.chphi.2025.100911

Khaled M. AlAqad

A two-step process using hydrothermal and chemical reduction methods was employed to integrate platinum nanoclusters onto zinc oxide nanosheets (ZnO NSs). The intense interaction between the nanoclusters (Pt) and ZnO NSs enhanced the electron transfer rate, resulting in exceptional electrocatalytic activity toward the HER and outstanding durability. In an acidic medium (0.5 M), the developed Pt/ZnO NSs electrocatalyst achieved an overpotential of -44 mV vs. RHE, affording a current density of -10 mA cm⁻² with a low Tafel slope of 25 mV dec⁻¹. The Pt/ZnO NSs electrode showed high mass activity (194.3 mA mg⁻¹), 3.4-fold higher than the 20 % Pt/C (57.14 mA mg⁻¹) at an overpotential of -44 mV. The turnover frequency of the Pt/ZnO NSs (0.52 s⁻¹) is higher than that of the 20 % Pt/C (0.166 s⁻¹) electrode. The impedance spectroscopy measurements investigated the strong coupling interaction between the platinum nanoclusters and ZnO NSs, which supports the high HER activity and facilitates electron transfer kinetics. Furthermore, the charge transfer resistance of the Pt/ZnO NSs is less than that of the 20 % Pt/C, which might be ascribed to the strong interaction between ZnO and Pt and the facile electron mobility from the conduction band of ZnO to Pt metal

采用水热法和化学还原法两步法将铂纳米团簇集成到氧化锌纳米片上。纳米团簇（Pt）和ZnO NSs之间的强烈相互作用提高了电子转移速率，从而产生了优异的HER电催化活性和优异的耐久性。在酸性介质（0.5 M）中，开发的Pt/ZnO NSs电催化剂相对于RHE实现了-44 mV的过电位，提供了-10 mA cm - 2的电流密度，低Tafel斜率为25 mV dec -1。Pt/ZnO NSs电极在-44 mV过电位下表现出较高的质量活性（194.3 mA mg−1），比20% Pt/C （57.14 mA mg−1）高3.4倍。Pt/ZnO电极的翻转频率（0.52 s−1）高于20% Pt/C电极的翻转频率（0.166 s−1）。阻抗谱测量研究了铂纳米团簇与ZnO纳米ss之间的强耦合相互作用，支持了高HER活性并促进了电子转移动力学。此外，Pt/ZnO纳米ss的电荷转移电阻小于20% Pt/C纳米ss的电荷转移电阻，这可能是由于ZnO和Pt之间的强相互作用以及电子从ZnO到Pt金属的易迁移性

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引用次数: 0

TiO2-functionalized mesoporous silica thin films synthesized by spin-coating to enhance methylene blue and methyl orange removal efficiency 旋涂法制备tio2功能化介孔二氧化硅薄膜，提高亚甲基蓝和甲基橙的去除效率

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-10 DOI: 10.1016/j.chphi.2025.100897

Andreas Federico , Donanta Dhaneswara , Toto Sudiro , Agrin Febrian Pradana , Iping Suhariadi , Siti Norasmah Surip , Jaka Fajar Fatriansyah

The textile industry as one of the largest industries in the world has been the biggest contributor to global water pollution in recent decades. Azo dyes such as methylene blue (MB) and methyl orange (MO) contained in the textile effluent can be a serious threat to aquatic ecosystem and human health. Thus, an effort to create an effective dye removal is needed. This study studies the application of dye removal by combining adsorption and photodegradation methods through the use of mesoporous silica/TiO₂ thin film fabricated by spin coating. The resulting TiO₂ has anatase phase as confirmed by the XRD result, while mesoporous silica has good surface and pore properties, as evidenced by a surface area of 1291.42 m²/g, a pore volume of 1.91 mL/g, and a pore diameter of 3.07 nm. After exposuring to the 10 ppm MB and MO solutions for four hours at a pH of 7, the synthesized mesoporous silica/TiO₂ thin film exhibited the best removal performance compared to the mesoporous silica thin film and TiO₂ thin film, with removal percentages of 77.90 % and 17.19 % for MB and MO, respectively. The difference in removal performance between MB and MO occurs due to the selective nature of mesoporous silica and TiO₂ caused by different interaction mechanisms.

纺织工业作为世界上最大的工业之一，近几十年来一直是全球水污染的最大贡献者。纺织废水中含有亚甲基蓝（MB）和甲基橙（MO）等偶氮染料，对水生生态系统和人体健康构成严重威胁。因此，需要努力创造一种有效的染料去除剂。本研究利用自旋镀膜制备的介孔二氧化硅/TiO2薄膜，研究了吸附与光降解相结合的染料去除方法的应用。XRD结果表明，TiO2具有锐钛矿相，介孔二氧化硅具有良好的表面和孔隙性能，比表面积为1291.42 m2/g，孔体积为1.91 mL/g，孔径为3.07 nm。在pH = 7的条件下，在10 ppm的MB和MO溶液中暴露4小时后，合成的介孔二氧化硅/TiO2薄膜的去除率分别为77.90%和17.19%，优于介孔二氧化硅薄膜和TiO2薄膜。MB和MO去除性能的差异是由于介孔二氧化硅和TiO2的选择性作用机制不同造成的。

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引用次数: 0

Synthesis, structure elucidation and computational analysis of a novel organic crystal: 2-bromo-3-(p-bromobenzenesulfonyl)-5,5-dimethyl -cyclohexanone 新型有机晶体2-溴-3-（对溴苯磺酰）-5,5-二甲基环己酮的合成、结构解析和计算分析

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-25 DOI: 10.1016/j.chphi.2025.100900

A.S. Jeevan Chakravarthy , N.R. Sreenatha

The synthesized compound, 2-bromo-3-(p-bromobenzenesulfonyl)-5,5-dimethylcyclohexanone (3) was characterized through NMR spectroscopy and single-crystal X-ray diffraction analysis. The X-ray studies reveals that compound (3) is crystallized in a monoclinic lattice system with the space group:

P_{2_{1 / c}}

. The structure of molecule as whole adopts a non-planar geometry with puckering environment. The hydrogen bonding interactions of the type CH…O were observed in the crystal packing of title compound (3). These interactions were recognized through computational approach by generating three-dimensional Hirshfeld surfaces with various properties and they are quantified by two-dimensional graphical tool viz. fingerprint analysis. Additionally, the stability and integrity of the crystal packing were assessed by calculating three-dimensional interaction energies using the HF/3-21G energy density model.

合成的化合物2-溴-3-（对溴苯磺酰）-5,5-二甲基环己酮(3)通过核磁共振波谱和单晶x射线衍射分析进行了表征。x射线研究表明化合物(3)在单斜晶格体系中结晶，其空间群为P21/c。分子整体结构采用非平面几何结构，具有起皱环境。在标题化合物的晶体填充物中观察到CH…O型氢键相互作用(3)。这些相互作用通过计算方法识别，生成具有不同性质的三维赫希菲尔德曲面，并通过二维图形工具即指纹分析对其进行量化。此外，利用HF/3-21G能量密度模型计算三维相互作用能，评估了晶体填料的稳定性和完整性。

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引用次数: 0

Mechanistic insights into dye adsorption on chitosan-functionalized bentonite: synergizing experiments and computational study 壳聚糖功能化膨润土对染料吸附的机理：协同实验和计算研究

IF 4.3 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-07-26 DOI: 10.1016/j.chphi.2025.100919

Rachid Et-tanteny , Ibrahim Allaoui , Rachid Haloui , Souad Elkhattabi , Khalid Draoui , Karim El Khadiri

Natural Moroccan bentonite (Bnt) exhibited a high adsorption capacity for crystal violet (CV, a cationic dye), reaching 157.37 mg/g. Conversely, its affinity for methyl orange (MO, an anionic dye) was limited (20.14 mg/g). However, the synthesized bentonite-chitosan composite (Bnt-Cs) features protonated amine groups, which enhance electrostatic and hydrogen-bond interactions, increasing the adsorption of MO dye by 76.65%. The kinetic data revealed that MO adsorption followed the pseudo-first-order (PFO) model, whereas CV adsorption was better described by the pseudo-second-order (PSO) model. These two models are governed by distinct diffusion mechanisms. Moreover, the adsorption isotherms for both dyes aligned well with the Freundlich model. Additionally, the Density Functional Theory (DFT) calculations indicated that CV’s narrower HOMO–LUMO gap and higher molecular softness were consistent with its enhanced reactivity and stronger interaction with the adsorbent. Furthermore, the molecular dynamics (MD) simulations confirmed the spontaneous, physically driven nature of the adsorption process. The close agreement between computational predictions and experimental data provides robust validation for the proposed adsorption mechanisms, offering clear mechanistic insights into dye adsorption processes.

天然摩洛哥膨润土（Bnt）对结晶紫（阳离子染料CV）具有较高的吸附量，吸附量可达157.37 mg/g。相反，其对甲基橙（MO，阴离子染料）的亲和力有限（20.14 mg/g）。然而，合成的膨润土-壳聚糖复合材料（Bnt-Cs）具有质子化胺基团，增强了静电和氢键相互作用，使MO染料的吸附性提高了76.65%。动力学数据表明，MO吸附符合准一阶（PFO）模型，而CV吸附符合准二阶（PSO）模型。这两种模型由不同的扩散机制控制。此外，两种染料的吸附等温线与Freundlich模型一致。此外，密度泛函理论（DFT）计算表明，CV具有更窄的HOMO-LUMO间隙和更高的分子柔软度，这与其增强的反应性和与吸附剂的更强相互作用是一致的。此外，分子动力学（MD）模拟证实了吸附过程的自发、物理驱动性质。计算预测和实验数据之间的密切一致为提出的吸附机制提供了强有力的验证，为染料吸附过程提供了清晰的机理见解。

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引用次数: 0

Radiation shielding study of tungsten impact on tellurite-bismuth based glasses 钨对碲铋基玻璃的辐射屏蔽研究

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-09 DOI: 10.1016/j.chphi.2025.100894

Kh.A. Bashar , M.F.N. Jaafar , Y. Mansur , S.O. Baki , M.A. Mahdi

The current study, a new Pb-free glasses of host (H) and four samples (S1-S4) of tellurite-bismuth-tungsten oxide according to formula: (70-x) TeO₂–10Bi₂O₃–10ZnO-10Al₂O₃- xWO₃, x = 0, 5, 10, 15, 20 mol %, were prepared by traditional melt-quenching method. The phase formation of all samples is analyzed by XRD (x-ray diffraction) were found they are without any crystallization network. Some physical properties like density and molar volume were estimated as well. Within energy of 0.015MeV-15MeV, samples are investigated in terms of gamma ray radiation shielding features. The MCNP5 stimulation code and theoretical XCOM software in addition to the other relevant equations are implemented to determine the mass attenuation coefficient (MAC) values where the other parameters are identified depending on its value such as mean free path (MFP), effective atomic number (Z_eff) and half-value layer (HVL). Also, the exposure build factor (EBF) and energy absorbed build factor (EABF) are evaluated by the geometric progression (G-P) fitting method. The appearance of synthesized glasses reflects that, the increment of WO₃ contents leads to increase the glasses opacity due to their density between 3.532 - 3.912 g/cm3. The uncertainty concentrations of the samples are calculated were they emphasized the accuracy of glass compositions. Moreover, the calculation results of stimulated MCNP5 code and theoretical XCOM program are closely matched, as the difference between them can be neglected. Further, the comparison with other works is made which emphasized the enhancement of the findings. Finally, according to above merits and results, the effectiveness of the radiation shielding features can be obviously recognized which is due to the WO₃ incorporated concentrations.

本研究采用传统熔淬法制备了新型无铅玻璃（H)和四种（S1-S4）碲-铋-氧化钨（70-x） TeO2-10Bi2O3-10ZnO-10Al2O3 - xWO3, x = 0、5、10、15、20 mol %）样品。用XRD （x射线衍射）分析了所有样品的相组成，发现它们没有任何结晶网络。一些物理性质，如密度和摩尔体积也估计。在0.015MeV-15MeV的能量范围内，研究了样品的伽马辐射屏蔽特性。通过MCNP5模拟代码和理论XCOM软件以及其他相关方程确定质量衰减系数（MAC）值，并根据其值确定其他参数，如平均自由程（MFP）、有效原子序数（Zeff）和半值层（HVL）。利用几何级数（G-P）拟合方法对暴露构建因子（EBF）和能量吸收构建因子（EABF）进行了评价。从合成玻璃的外观可以看出，WO3含量的增加导致玻璃的不透明度增大，其密度在3.532 ~ 3.912 g/cm3之间。计算了样品的不确定度浓度，强调了玻璃成分的准确性。仿真MCNP5代码与理论XCOM程序的计算结果吻合较好，两者之间的差异可以忽略不计。并与其他研究作了比较，强调了研究结果的改进。最后，根据上述优点和结果，可以明显地认识到辐射屏蔽特性的有效性，这与WO3掺入浓度有关。

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引用次数: 0

Multi-component NiO–Fe₂O₃–CuO anchored on MXene as supercapacitor electrode material 多组分NiO-Fe₂O₃-CuO锚定在MXene上作为超级电容器电极材料

IF 4.3 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-11-20 DOI: 10.1016/j.chphi.2025.100976

Sadegh Azizi, Mohammad Bagher Askari

In this study, a novel ternary composite of NiO–Fe₂O₃–CuO was successfully synthesized and anchored on MXene (Ti₃C₂) nanosheets via a facile hydrothermal method, using nickel foam as the current collector. The resulting NiO–Fe₂O₃–CuO/MXene composite was thoroughly characterized by XRD, FESEM, and elemental mapping analyses, confirming the coexistence and homogeneous distribution of all constituent phases. Electrochemical evaluations in 2 M KOH electrolyte revealed that the NiO–Fe₂O₃–CuO/MXene electrode exhibits outstanding faradaic activity and enhanced charge storage, as evidenced by its large integrated CV area, pronounced redox peaks, and the highest specific capacitance of 790 F g⁻¹ at 1 A g⁻¹. The composite also demonstrated remarkable rate capability, retaining 74.6% of its capacitance at 4 A g⁻¹, as well as superior cycling stability (91.5% retention after 5000 cycles) compared to NiO–Fe₂O₃–CuO and MXene electrodes. This performance enhancement is attributed to the synergistic effects between the multi-metal oxides and the conductive MXene scaffold, which offers abundant electroactive sites, rapid ion/electron transport, and robust structural integrity. These findings suggest that the NiO–Fe₂O₃–CuO/MXene hybrid is a highly promising electrode material for next-generation high-performance supercapacitors.

在本研究中，以泡沫镍为捕流剂，通过水热法成功合成了一种新型的NiO-Fe₂O₃-CuO三元复合材料，并将其固定在MXene （Ti₃C₂）纳米片上。通过XRD、FESEM和元素图分析对NiO-Fe₂O₃-CuO /MXene复合材料进行了表征，证实了该复合材料各组分相共存且分布均匀。在2 M KOH电解液中的电化学评价表明，NiO-Fe₂O₃-CuO /MXene电极具有良好的法电活性和增强的电荷存储能力，其综合CV面积大，氧化还原峰明显，在1 A g⁻¹处的比电容最高为790 F g⁻¹。与NiO-Fe₂O₃-CuO和MXene电极相比，该复合材料也表现出了显著的倍率能力，在4 A - g⁻¹下保持74.6%的电容，以及优越的循环稳定性（5000次循环后保持91.5%）。这种性能的增强归功于多金属氧化物和导电MXene支架之间的协同作用，MXene支架提供了丰富的电活性位点，快速的离子/电子传输和坚固的结构完整性。这些发现表明，NiO-Fe₂O₃-CuO /MXene杂化材料是下一代高性能超级电容器极有前途的电极材料。

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引用次数: 0

Effect of bath temperature on physical properties of thin films CuO using the SILAR method: Photocatalytic properties and numerical investigation 浴液温度对CuO薄膜物理性质的影响——用SILAR方法：光催化性质和数值研究

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-14 DOI: 10.1016/j.chphi.2025.100901

Latifa Znaidi , Hafsa Diyagh , Ismail Benaicha , Nabil Bouri , Lahoucine El Gana , Haytham El Farri , Kawtar Oukacha , Mounir Fahoume , khalid Nouneh

Copper oxide (CuO) thin films were deposited on glass substrates using the Successive Ionic Layer Adsorption and Reaction (SILAR) method, these films synthesized cationic solution temperatures of room temperature (RT), 65 °C, 75 °C, and 95 °C. The effects of varying cationic solution temperatures on the structural, optical, and photocatalytic properties of the CuO thin films were investigated. Characterization was performed using X-ray diffraction (XRD), UV–visible spectrophotometry (UV–Vis), and scanning electron microscopy (SEM). The XRD and SEM results revealed that all films exhibited a polycrystalline structure with monoclinic phases and good substrate coverage. The optical bandgap energy decreased from 1.92 eV to 1.74 eV as the cationic solution temperature increased. Additionally, the photocatalytic performance was evaluated by measuring the degradation of a 10 ppm tetracycline solution. The efficiencies improved from 11.1 % at RT to 18.4 % at 95 °C. Finally, a numerical analysis was conducted using the SCAPS simulation software, employing the identified optimal bandgap of 1.74 eV for degradation. The simulation involved creating a PN junction device with a CuO HTL and different electron transport layers (ETLs: ZnO, TiO₂, WS2 and SnO₂), to examine the effect of CuO film thickness and the shallow doping concentrations of the acceptors (CuO) and donors (ETLs) on current density.

采用连续离子层吸附和反应（SILAR）方法在玻璃衬底上沉积氧化铜（CuO）薄膜，制备的阳离子溶液温度分别为室温（RT）、65℃、75℃和95℃。研究了不同阳离子溶液温度对CuO薄膜结构、光学和光催化性能的影响。采用x射线衍射（XRD）、紫外可见分光光度法（UV-Vis）和扫描电镜（SEM）进行表征。XRD和SEM结果表明，所有薄膜均为单斜相的多晶结构，衬底覆盖率良好。随着阳离子溶液温度的升高，光学带隙能量从1.92 eV下降到1.74 eV。此外，通过测量10 ppm四环素溶液的降解来评估光催化性能。效率从室温下的11.1%提高到95℃时的18.4%。最后，利用SCAPS仿真软件进行了数值分析，选择了1.74 eV的最优带隙进行降解。该模拟涉及创建一个具有CuO HTL和不同电子传输层（ETLs: ZnO, TiO2， WS2和SnO2）的PN结器件，以研究CuO膜厚度以及受体（CuO）和供体（ETLs）的浅掺杂浓度对电流密度的影响。

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引用次数: 0

Systematic optimization of alginate gelation parameters in the synthesis of oleaster-based magnetic granules for enhanced binary cationic dye removal 系统优化海藻酸盐胶凝工艺，合成增强二元阳离子染料去除的聚酯基磁性颗粒

IF 4.3 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-08-28 DOI: 10.1016/j.chphi.2025.100934

Masoomeh Chaharkam , Maryam Tahmasebpoor , Muge Sari Yilmaz

In this study, activated carbon (AC) derived from oleaster seeds was modified with iron nanoparticles (Fe-AC) and granulated using sodium alginate (NaAlg) via the wet gelation method to develop efficient granular adsorbents. The effects of various parameters, such as mixture pH, type and concentration of the cross-linking solution, initial mass ratio of NaAlg to Fe-AC, drying method, and final granule size were investigated in terms of both the physical appearance of the granules and their performance in removing crystal violet (CV) and methylene blue (MB) dyes. The selected granules were prepared under optimal conditions: a pH of 7, an iron (III) chloride cross-linking solution with a concentration of 2 % w/v, an initial alginate to Fe-AC ratio of 1:4, air-drying, and an initial granule size of 1 mm. Analytical techniques including FTIR, SEM-EDX, and BET confirmed the successful incorporation of iron nanoparticles within the adsorbent framework and revealed a well-developed porous structure with a specific surface area of 47.306 m²/g. Under these optimal conditions, the highest removal efficiencies achieved were 96.29 % for CV and 94.26 % for MB, with maximum adsorption capacities of 14.2857 mg/g for CV (single system) and 9.7370 mg/g for the binary CV/MB system, according to the Langmuir isotherm. These results demonstrate that the synthesized Fe-AC/NaAlg granules combine high adsorption efficiency with ease of separation, mechanical stability, and reusability, making them a promising and scalable adsorbent for industrial wastewater treatment, particularly in textile and dyeing applications where removal of cationic dyes is critical.

本研究以油橄榄籽为原料，用铁纳米粒子（Fe-AC）修饰活性炭（AC），并用海藻酸钠（NaAlg）湿凝胶法制备高效颗粒吸附剂。考察了混合pH、交联溶液的种类和浓度、NaAlg与Fe-AC的初始质量比、干燥方式和最终粒径等参数对颗粒的物理外观及其对结晶紫（CV）和亚甲基蓝（MB）染料的脱色性能的影响。所选颗粒在最佳条件下制备：pH = 7，氯化铁（III）交联溶液浓度为2% w/v，初始海藻酸盐与Fe-AC的比例为1:4，风干，初始粒径为1mm。FTIR、SEM-EDX和BET等分析技术证实了铁纳米颗粒在吸附剂框架内的成功结合，并揭示了一个发育良好的多孔结构，比表面积为47.306 m²/g。根据Langmuir等温线，在此条件下，CV和MB的最高去除率分别为96.29%和94.26%，CV（单一体系）和CV/MB二元体系的最大吸附量分别为14.2857 mg/g和9.7370 mg/g。这些结果表明，合成的Fe-AC/NaAlg颗粒具有高吸附效率，易于分离，机械稳定性和可重复使用性，使其成为工业废水处理中有前途的可扩展吸附剂，特别是在去除阳离子染料至关重要的纺织和染色应用中。

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引用次数: 0

In vitro pharmacological activities and phytochemical investigation of Cinnamomum walaiwarense Kosterm 肉桂体外药理活性及植物化学研究

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-06-22 DOI: 10.1016/j.chphi.2025.100905

M. Manojkumar , M. Mayilsamy

Cinnamon trees are small evergreens with aromatic bark and leaves. The spice, consisting of the dried inner aromatic bark, brown in color and has a delicately fragrant aroma. The present study explores pharmacological properties of Lauraceae Family - Cinnamomum walaiwarense, a lesser-known and critically endangered species, is endemic to the biodiverse South-Western Ghats of India. The spices from the dried inner bark, is brown with a sweet, aromatic fragrance. Bark samples were sequentially extracted in organic solvents ethylacetate into five different concentrations. The resulting extracts were evaluated for presence of secondary metabolites through standard phytochemical assays. Saponins were identified as the most abundant phytoconstituents, along with other known compounds. To assess the therapeutic significance of secondary metabolites, the ethyl acetate extract further examined for anti-cancer, anti-inflammatory, antioxidant, and anti-diabetic properties through established in-vitro assays. The extract demonstrated promising bioactivity across the carried assays, suggesting a broad-spectrum pharmacological potential. These findings reveals valuable preliminary evidence supporting the medicinal significance of C. walaiwarense, while also underpinning the ecological determination of conserving this rare endemic species. This study supports further pure compound isolation and in-vivo validation, spotlighting the untapped therapeutic potential of the underexplored species

肉桂树是一种小的常青树，有芳香的树皮和叶子。这种香料由干燥的内部芳香树皮组成，颜色为棕色，具有微妙的芳香。摘要本研究探讨了樟科植物肉桂（Cinnamomum walaiwarense）的药理特性，这是一种鲜为人知的极度濒危物种，是印度西南高止山脉生物多样性的特有物种。从干燥的内树皮中提取的香料呈棕色，带有甜味和芳香。树皮样品在乙酸乙酯有机溶剂中依次提取成5种不同浓度。通过标准的植物化学分析来评估所得提取物是否存在次生代谢物。皂苷被认为是最丰富的植物成分，以及其他已知的化合物。为了评估次生代谢物的治疗意义，乙酸乙酯提取物通过建立的体外实验进一步研究了抗癌、抗炎、抗氧化和抗糖尿病的特性。该提取物显示出有希望的生物活性，通过所进行的分析，表明一个广谱的药理学潜力。这些发现揭示了有价值的初步证据，支持了walaiwarense的药用价值，同时也支持了保护这一稀有特有物种的生态决定。该研究支持进一步的纯化合物分离和体内验证，突出了未开发的未开发物种的治疗潜力

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引用次数: 0

NiS-ZnS quantum dots as visible-light photocatalysts for enhanced dye degradation in sustainable wastewater treatment NiS-ZnS量子点作为可见光催化剂在废水可持续处理中增强染料降解

IF 3.8 Q2 CHEMISTRY, PHYSICAL

Chemical Physics Impact

Pub Date : 2025-12-01 Epub Date: 2025-07-12 DOI: 10.1016/j.chphi.2025.100912

Vigneshwaran Alagarsamy , Nachimuthu Venkatesh , S Ahamed Roshan , Sakthivel Pandurengan , Lalitha Gnanasekaran , Kanagasabai Viswanathan , Govindhasamy Murugadoss

Nickel Sulfide–Zinc Sulfide Quantum Dots (NiS-ZnS QDs) have gained attention as efficient photocatalysts for breaking down organic dyes due to their adjustable optoelectronic characteristics and improved photocatalytic efficiency. In the present work, NiS, ZnS, and NiS-ZnS QDs were prepared using a chemical precipitation approach and thoroughly analysed through characterization techniques. The incorporation of Ni into the ZnS lattice was found to significantly modulate the band gap, facilitating improved visible light absorption. The photocatalytic performance of the synthesized NiS-ZnS QDs was evaluated through the degradation of Methylene Blue (MB) and Rose Bengal (RB) under visible-light irradiation. The results demonstrated a substantial enhancement in dye degradation efficiency compared to ZnS QDs and NiS, attributed to the suppression of electron-hole recombination, increased generation of reactive oxygen species (ROS), and improved charge carrier separation. Remarkably, the NiS-ZnS QDs achieved degradation efficiencies of 96.91 % for MB and 97.12 % for RB under visible light exposure, showcasing their superior photocatalytic activity. These findings highlight the potential of NiS-ZnS QDs as a highly efficient and economically viable photocatalyst for sustainable wastewater treatment applications. Furthermore, the efficient degradation of mixed dye solutions highlights the practical applicability of the photocatalyst, underscoring its potential for real-world wastewater treatment applications. Tuning the optical and electronic properties of these quantum dots via nickel doping offers promising opportunities for designing advanced photocatalytic materials aimed at environmental cleanup.

硫化镍-硫化锌量子点（NiS-ZnS QDs）由于其可调节的光电特性和提高的光催化效率而成为分解有机染料的高效光催化剂。本文采用化学沉淀法制备了NiS、ZnS和NiS-ZnS量子点，并通过表征技术对其进行了深入分析。在ZnS晶格中掺入Ni可以显著调节带隙，促进可见光吸收。通过在可见光照射下对亚甲基蓝（MB）和孟加拉玫瑰（RB）的降解，评价了合成的NiS-ZnS量子点的光催化性能。结果表明，与ZnS量子点和NiS相比，染料降解效率显著提高，这是由于抑制了电子-空穴复合，增加了活性氧（ROS）的产生，并改善了载流子分离。值得注意的是，NiS-ZnS量子点在可见光下对MB和RB的降解效率分别达到96.91%和97.12%，显示出优异的光催化活性。这些发现突出了NiS-ZnS量子点作为一种高效且经济可行的光催化剂的潜力，可用于可持续的废水处理。此外，混合染料溶液的有效降解突出了光催化剂的实用性，强调了其在实际废水处理应用中的潜力。通过镍掺杂调整这些量子点的光学和电子特性，为设计旨在环境净化的先进光催化材料提供了有希望的机会。

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