Article
Chemistry, Multidisciplinary
Wassila Touati, Mohamed Karmaoui, Ahmed Bekka, Miroslava Filip Edelmannova, Clarisse Furgeaud, Alaoui Chakib, Imene Kadi Allah, Bruno Figueiredo, J. A. Labrincha, Raul Arenal, Kamila Koci, David Maria Tobaldi
Summary: The study investigated the synthesis of g-C3N4 from different precursors and the impact of graphene content on photocatalytic activity. Results showed that graphene-modified g-C3N4 photocatalysts exhibited higher activity compared to commercial P25.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Chemical
Bin Liu, Hanyuan Huang, Zhijian Xiao, Jingling Yang, Mingshan Zhu
Summary: Developing visible light responsive photocatalysts with strong light capture ability for catalytic NO removal is of great significance. In this work, a 2D/3D heterostructure of g-C3N4/BiOI was constructed and applied for efficient photocatalytic elimination of NO under visible light irradiation. The heterostructure endowed the enhanced light harvesting, efficient charge separation and rapid charge transfer, which enabled sufficient superoxide radicals (O-2(center dot-)) production to improve the efficiency and strengthen the durability of photocatalytic NO removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuyan Qi, Ruiyan Zhang, Yiming Zhang, Xueting Liu, Huanyan Xu
Summary: The heterojunction photocatalyst Bi2WO6/g-C3N4 exhibits excellent photocatalytic performance and relatively stable catalytic activity. The addition of Bi2WO6 enhances the photocatalytic efficiency, with the active groups mainly being ·OH in the photocatalytic degradation process.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Environmental Sciences
C. Venkata Reddy, Kakarla Raghava Reddy, Rustem R. Zairov, Bai Cheolho, Jaesool Shim, Tejraj M. Aminabhavi
Summary: In this study, novel g-C3N4 functionalized yttrium-doped ZrO2 hybrid heterostructured (g-YZr) nanoparticles were synthesized for photocatalytic Cr(VI) reduction and electrochemical energy storage applications. The g-YZr nanoparticles exhibited enhanced light absorption capability and superior photocatalytic performance due to their narrow band gap and unique heterostructure. Moreover, they demonstrated excellent structural stability and cyclic stability, as well as superior specific capacitance in energy storage applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Ceramics
Huanhuan Zhai, Zhuolin Liu, Jiaxin Tong, Yi Zhang, Binhua Zhou, Pengfei Tan, Rongjian Sa, Jun Pan
Summary: This study incorporates Pt clusters onto N vacancy engineered ultrathin g-C3N4 by a photo-deposition method to fabricate highly active photocatalysis. The Pt clusters on vUCN enable efficient electron transfer and band-gap optimization, resulting in superior photocatalytic performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Dandan Zhu, Qixing Zhou
Summary: In this study, nitrogen-doped g-C3N4 (NCN) with an extremely narrow band gap was prepared and applied to enhance the photocatalytic activity for phenol degradation. Experimental and theoretical results showed that nitrogen doping improved photogenerated carrier separation and charge transfer, leading to increased visible light absorption and enhanced photocatalytic performance. The introduction of foreign atoms in the matrix can be a strategy to enhance the photocatalytic activity of photocatalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Shuyan Qi, Xueting Liu, Ruiyan Zhang, Yiming Zhang, Huanyan Xu
Summary: In this study, a heterostructure of g-C3N4/BiOCl was prepared by hydrothermal method, and it was found that under a certain ratio, it exhibits higher photocatalytic activity, effectively degrading methylene blue.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xiaojie Wu, Di Li, Bifu Luo, Biyi Chen, Yuanyong Huang, Tingting Yu, Nanjun Shen, Longhua Li, Weidong Shi
Summary: A series of S double-site-doped ultrathin g-C3N4 nanosheets (SUCN) with adjustable intermediate band gap were reported to have light response over NIR region and could effectively generate hydrogen (H2) under NIR-light irradiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Alhulw H. Alshammari, Majed Alshammari, Sultan Alhassan, Khulaif Alshammari, Turki Alotaibi, Taha Abdel Mohaymen Taha
Summary: In this study, MoO3/S@g-C3N4 nanocomposite was used for hydrogen production. The nanocomposite showed high lattice constant and band gap energy. It also had larger surface area and pore volume compared to pure MoO3. The MoO3/10%S@g-C3N4 nanocomposites achieved the highest hydrogen production from NaBH4 hydrolysis.
Article
Physics, Applied
Manju Kumari Jaiswal, Biswajit Choudhury
Summary: This study reports the photocatalytic activity of doped graphitic carbon nitride under visible light. Doped samples showed improved band structure and absorption properties compared to the pure form. Various factors such as dopant-induced strain and quantum confinement contributed to the enhanced photocatalytic performance.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Yuchun Ren, Tao Gong, Songlin Tan, Ming Chen, Fei Zhou, Yongjun Lin, Li Yang, Qiong Peng
Summary: The properties and interactions of g-C3N4, Bi3NbO7, and g-C3N4/Bi3NbO7 photocatalysts were revealed through various tests. g-C3N4/Bi3NbO7 has a lower band gap and higher absorption of visible light, as well as higher efficiency in separating photogenerated electron-hole pairs. In the photocatalytic reduction of Cr(VI), g-C3N4/Bi3NbO7 is more effective than pure g-C3N4 and Bi3NbO7.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Fucheng Yu, Yuanmeng Li, Zhengyan Liu, Dongmei Nan, Bolong Wang, Ling He, Jianbin Zhang, Xianxi Tang, Yangshuo Liu
Summary: ZnO nanorods/g-C3N4 photocatalytic composite was prepared by synthesizing g-C3N4 and growing ZnO nanorods on its surface using a hydrothermal method. The hydrothermal reaction time was found to influence the morphology and photocatalytic properties of the composite. The sample with a hydrothermal grown time of 3 hours showed the best photocatalytic performance among all the composite samples, indicating the importance of reaction time in controlling the photocatalytic behavior.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Inorganic & Nuclear
Mengfan Wang, Hongliang Xu, Chaoning Huang, Zhentao Cui, Mingliang Li, Bo Song, Gang Shao, Hailong Wang, Hongxia Lu, Rui Zhang
Summary: In this study, g-C3N4/diatomite composites were synthesized by mixing melamine and diatomite in hydrochloric acid aqueous solution and calcining the mixture at 550 degrees C for 2 hours. The CN/DE-10 composite exhibited the best photocatalytic performance, degrading over 95% of RhB solution in 50 minutes, with a reaction rate constant 6.4 times that of pure g-C3N4. The enhanced specific surface area, improved light absorption ability, and reduced recombination rate of electrons and holes contributed to the outstanding photocatalytic performance of CN/DE-10.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Libin Wang, Linlin Zang, Fengtong Shen, Jingzhen Wang, Zhiyu Yang, Yanhong Zhang, Liguo Sun
Summary: Carbon nitride-based photocatalysts modified with transition metals have shown great potential for efficient CO2 reduction. In this study, Cu modified g-C3N4 nanorod bundles (CCNBs) were successfully prepared and exhibited excellent photocatalytic activity. The introduction of uniformly dispersed Cu improved light absorption, increased active sites, and enhanced the separation and transfer of carriers, resulting in a significantly higher CO yield compared to bulk g-C3N4.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Qingqing Zhang, Yuhe Chen, Chengxiao Zhao, Xiaofei Yang, Zupeng Chen
Summary: This study successfully fabricates one-dimensional oxidized porous carbon nitride rods with enlarged surface area and increased porosity, as well as enhanced optical properties and suppressed electron-hole recombination process. The photocatalytic activity is significantly improved in the degradation of rhodamine B, overcoming the aggregation problem in synthesis.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)