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The energy gap of photocatalyst is important for photocatalytic processes. As a common substrate, the iron-based photocatalyst has attracted much attention due to its high catalytic activity. While, the basic functional relationship between the mole ratio of Fe2+/Fe3+ in Fe3O4 nanoparticles (NPs) and the energy gap (Eg) is still unknown. this quantitative relationship was built by equations in this study. A series of experiments are carried out and the functional relationship is summarized by UV-Vis diffuse reflectance spectra (DRS) based on Kubelka-Munk theory. Meanwhile, its application for ..read more
Shijie Zhang
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 290
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In recent years, metal-catalyzed hydrogen atom transfer (MHAT) reactions have become integral to many catalytic reactions due to their stereoselectivity, chemical fidelity and selectivity. As the first transition metal element in abundant global reserves, manganese has the advantages of lower price and less toxicity, and a series of manganese complexes are used in MHAT reactions. In the reaction, the prominent catalytic intermediate manganese hydride formation is involved in the whole catalytic cycle, therefore the rupture of manganese-hydrogen bonds denoted by one of the thermodynamic paramet..read more
Yan Que, Wenrui Zheng, Chenhao Wu, Shenghao Pan, Peilei Jiao
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 298
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The development of high-performance, sustainable, and economical electrodes with superior capacity and cyclic stability is crucial for the advancement of energy storage devices. Carbon nanotubes (CNTs) has garnered considerable interest as a potential electrode material for energy storage applications, owing to its high capacity, natural abundance, cost-effectiveness, and eco-friendliness. In the present study, lignin was combined with CNTs to synthesize a Co-CNTs/lignin composite electrode material via hydrothermal method, for enhance energy storage performance. The structure and surface morp..read more
Zaib Ullah Khan, Jinghua Jiang, Zahid Ullah, Muhammad Yasir Ali Khan, Asifa Kusar
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 313
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In this study, we synthesized probe R using Rhodamine 6G as the chromophore. The structure of probe R was characterized, and its probe properties and reaction mechanism were studied. The experimental results could be observed with the naked eye, and probe R could detect iron ions effectively. The LOD of UV-vis absorption determination was 6.4 μM, which was significantly lower than the international sanitation standard for drinking water. Therefore, R could be used as a new visual metal ion probe to determine Fe3+ content. Job's plot experiment demonstrated that the response of probe R to Fe3+ ..read more
Rong Jiang, Sining Li, Jingwen Zhang, Haipeng Bi, Changjiang Li
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 326
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The basic aim of this research is to study the suitable conditions of the biodiesel by using waste refined cooking oil as a preliminary material with heat-treated seashells at 500°C, 800°C, and 1000°C as heterogeneous catalysts. It recorded at 800 °C a high level of CaO as catalyst 90.89 % under the following reaction conditions: catalyst is 0.5 g, temperature at 80 °C, reaction duration is 180 minutes, and the oil-to-alcohol ratio is 10:20%. The impact of energizing temperature on transesterification processes in the range of 500°C–1000°C proved that the calcination temperature at 800 °C of s..read more
Esraa Mohamed Musa and Norah A. Alsaiari
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 335
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The phthalocyanine having 4-(2-(N-2´-cyanoethyl)aminoethylsulfanyl) group had been reported earlier in the literature. In this current studying, DNA binding activity of 1Pc phthalocyanine bearing 4-(2-(N-2´-cyanoethyl)aminoethylsulfanyl units was examined spectroscopically via elctronic absoption, fluorescence titration, melting point profile, electrophoresis and viscosity methods. The interaction activity of 1Pc compound was examined at differing concentrations. UV/Vis spectrometer, viscosity, fluorescence spectroscopy and thermal melting temperature confirmed that 1Pc binds to the DNA. The K..read more
Ali Arslantaş and Mehmet Salih Ağırtaş
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 345
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In this study, iron-doped titanium dioxide (TiO2) nanocomposites were synthesized using Moringa oleifera leaf extract via a green two-step sol-gel method, aiming to enhance photocatalytic degradation performance under sunlight. The Moringa-mediated synthesis provided an eco-friendly and cost-effective route for obtaining Fe-doped TiO2 nanomaterials (MFTNc) with improved structural and optical characteristics. X-ray diffraction (XRD) confirmed the anatase phase and revealed a reduction in crystallite size with increasing Fe content, while FTIR analysis validated the presence of key functional g..read more
Ayesha Noor, Muhammad Irfan, Alishba Qureshi, Somia Bibi, M. Naziruddin Khan, Fatimah M. Alzahrani, Wissem Mnif
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 353
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Since the accidental discovery of Prussian Blue in 1706, the blue chemical has been extensively employed in a number of commercial applications. It has been used as a color for paintings, dye for textile, antidote for heavy metal toxicity, staining agent in histopathology, and by machinists and toolmakers for spotting metal surfaces. In addition, due to its unique electrochemical properties, Prussian Blue has been vastly studied as storage of electric energy and used as a battery material. The electroanalytical applications of Prussian Blue and its different analogs have also been thoroughly i..read more
Rimsha Rey Khan and Jamil Anwar
- 08 Aug 2025
- Volume Detail: VOLUME 47, NO4, AUG-2025
- Pages: 365
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