Article
Engineering, Environmental
Huihui Zhang, Huajun Gu, Xinglin Wang, Shengyuan Chang, Qin Li, Wei -Lin Dai
Summary: A novel rectangular tubular hierarchical NiS/ZnIn2S4/AgIn(WO4)(2) heterostructure was synthesized in this study. It was found that this heterostructure can facilitate the separation and transfer of photoinduced charge carriers, resulting in enhanced photocatalytic hydrogen evolution activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Min Fu, Xueli Hu, Cheng Wang, Peng Lu, Jinwu Bai, Ruiqi Wang, Xuemei Tan
Summary: A novel NaLa(WO4)(2)/g-C3N4 photocatalyst with Z-scheme heterojunction was successfully synthesized, showing high NO purification efficiency, which provides a new direction for photocatalytic treatment of NO in the environment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yashar Behnamian, Ermia Aghaie, Diana Serate, Zachary Tolentino, Hamid Niazi, Amir Mostafaei
Summary: A novel copper aluminate-silver nanocomposite was successfully synthesized using an organic acid-assisted sol-gel method, and its photocatalytic performance for the degradation of methylene blue under visible light illumination was investigated. The results showed that increasing the silver concentration resulted in larger crystallite size and average particle size. The nanocomposite with 3 wt% Ag exhibited the highest photocatalytic yield and structural stability.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yu-Yun Lin, Pei-Hsuan Lu, Fu-Yu Liu, Chung-Shin Lu, Chiing-Chang Chen
Summary: Recent studies have found that 2D bismuth oxyhalides can inhibit electron-hole pair recombination, and perovskite-like strontium bismuth-based compounds with a layered Sillen X1 structure show promise as effective visible-light photocatalysts. In this study, a series of strontium bismuth oxyhalide composites were prepared, and their compositions were controlled by adjusting the calcination conditions. The catalysts exhibited high degradation efficiencies and photocatalytic activities for rhodamine B and 2-hydroxybenzoic acid under visible-light irradiation, making them highly effective for environmental remediation.
Article
Materials Science, Ceramics
Mahvash Siahmansouri, Mehdi Mousavi-Kamazani
Summary: The synthesis and characterization of hollow flower-like NixZn2-xV2O7/WO4 nanostructures were reported using a simple Pechini sol-gel method to improve desulfurization efficiency of petroleum derivatives. Factors affecting morphology, such as chelating agent, gelling agent, and elements ratio, were investigated to determine optimal conditions. SEM images showed that involvement of all elements Ni, Zn, V, and W resulted in formation of hollow structures with high surface area, leading to over 95% efficiency of photocatalytic oxidative desulfurization after 2.5 hours under visible light. The presence of EDTA reduced efficiency to 23%, indicating superoxide as the most active radical species in the process. Comparisons of different compositions showed varying efficiency, highlighting the impact of both composition and morphology.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Feiyan Wu, Yibo Dou, Jianchi Zhou, Jibo Qin, Tao Jiang, Yuechao Yao, Claus Helix-Nielsen, Wenjing Zhang
Summary: This study reports a feasible strategy for synthesizing high-entropy photocatalysts-based fibrous membranes with a dual function of capturing and upcycling plastic. The researchers found that polyacrylonitrile nanofiber templates enable the growth of highly arranged high-entropy metal tungstates (FeCoNiCuZn)WO4, and the lattice distortion in XWO4 modulates the band gap structure, leading to enhanced upgradability of captured polylactic acid. This research provides important insights into tailoring the structure and composition of high-entropy photocatalysts for plastic upcycling.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Wenwu Zhao, Jinqiang Liu, Xiuwen Wang, Yan Huang, Haijing Zhou, Jianyuan Yu, Jian Liu, Bin Hao, Xiaoliu Wang, Yingna Li
Summary: Polarized Zn(IO3)(2) was successfully prepared via a simple hydrothermal method and showed excellent catalytic activity, with higher photocatalytic efficiency compared to a commercial TiO2 P25 catalyst under UV light irradiation. The enhanced photocatalytic performance of Zn(IO3)(2) can be attributed to the promoted separation and prolonged lifetime of photogenerated carriers caused by the internal polarization field.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Optics
Amandine Baillard, Pavel Loiko, Daniel Rytz, Sebastian Schwung, Michael Fromager, Alain Braud, Patrice Camy
Summary: This article reports the first laser operation of a Sm3+-doped monoclinic KGd(WO4)2 double tungstate crystal. The laser, pumped by a frequency-doubled optically pumped semiconductor laser, achieved high output power, slope efficiency, and linear polarization. The polarized spectroscopic properties of Sm3+ ions were also determined.
Article
Environmental Sciences
Weiqing Ning, Yuan Li, Yu Fang, Fang Li, Reza Pournajaf, Bejan Hamawandi
Summary: CoCr2O4 nanoparticles and their composites with g-C3N4 were synthesized and characterized. The composite samples showed higher photocatalytic activities than the pure CoCr2O4 sample, and complete degradation of methylene blue dye was achieved within 80 minutes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Analytical
Imran Aslam, Muhammad Saqib, Muhammad W. Iqbal, Rajender Boddula, Tariq Mahmood, Usman Ghani
Summary: This study successfully synthesized an efficient Fe-2(WO4)(3) photocatalyst via co-precipitation method for degrading harmful pollutants in wastewater. The optimized experimental parameters led to a 93% degradation rate of MB, with a noticeable reduction of 69.12% in toxicity levels.
CURRENT ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Kaouther Derraji, Claude Favotto, Jean-Christophe Valmalette, Sylvie Villain, Gilles Nolibe, Abdallah Lyoussi, Frederic Guinneton, Jean-Raymond Gavarri
Summary: A series of polycrystalline cerium samarium tungstates belonging to a solid solution Ce(2-x)Smx(WO4)3 were synthesized and characterized. Structural defects were observed and the emission spectra were mainly attributed to Sm3+ cations.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Optics
M. Isik, N. M. Gasanly, N. H. Darvishov, V. E. Bagiev
Summary: In this study, sodium bismuth tungstate single crystals were grown using the Czochralski method and their optical properties were investigated. The results showed that the absorption edge shifted to higher energies with decreasing temperature, indicating an increase in the direct band gap energy. The temperature dependency of the band gap was analyzed and the optical parameters were determined using the Varshni model. The study also determined the Urbach energies for different temperatures.
Article
Chemistry, Inorganic & Nuclear
Ying Nian, Linpin Luo, Wenxin Zhu, Chengyuan Yang, Liang Zhang, Min Li, Wentao Zhang, Jianlong Wang
Summary: This study demonstrates a ligand with photoresponsive oxidase-like activity for catalyzing oxidation reactions under light control, involving the generation of superoxide radicals through photogenerated electron transfer. Additionally, the inhibitory effect of copper ions on the catalytic system is unveiled.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Environmental Sciences
Ramazan Keyikoglu, Irmak Naz Dogan, Alireza Khataee, Yasin Orooji, Mehmet Kobya, Yeojoon Yoon
Summary: This study successfully synthesized a ternary layered double hydroxide containing Zn, Co, and Fe transition metals using a co-precipitation procedure and evaluated its photocatalytic performance in the degradation of methylene blue under visible light irradiation. The results showed that the catalyst exhibited high photocatalytic activity and stability, making it suitable for long-term application in photocatalytic water treatment.
Article
Thermodynamics
Chuxiong Chen, Jingyu Cao, Jingjing Yu, Weixin Liu, Mingke Hu, Qiliang Wang, Dongsheng Jiao, Wei Ren, Gang Pei
Summary: Controllable loop thermosyphon provides efficient heat transfer and precise temperature control in continuous and start-stop operations, showing great potential in applications such as refrigerators. The use of R407C as the working fluid demonstrates effective heat transfer and thermal control, leading to successful management of precise temperatures.
APPLIED THERMAL ENGINEERING
(2021)
