Article
Engineering, Environmental
Zhiwei Wang, Jiaying Huang, Wei Wang, Xinfeng Wang, Yan Wang, Baoyu Gao, Qian Li
Summary: Monocarboxylic acids were used to modulate the number of missing-linker defects in Hf-porphyrin MOFs (Hf-TCPP-X) and enhance their performance in removing norfloxacin from complex aqueous matrices. The missing-linker defects promoted the removal efficiency by facilitating photoinduced charge transfer and increasing the number of active sites. This study provides a promising route to improve the removal performance of contaminants in highly saline water through defect engineering.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zejin Wang, Rui Ding, Xiaoke Li, Jie Zhang, Le Yang, Ying Wang, Jianguo Liu, Zhigang Zhou
Summary: This study successfully blocked the growth accretion of crystals through the coordination of solvent molecules, resulting in the synthesis of impurity-free two-dimensional nanosheet Zn-PTC with exceptional photocatalytic performance. The correlation between structural anisotropy and intrinsic charge transfer mode was established, demonstrating the importance of electron transfer along the [001] direction in the redox performance of nano-Zn-PTC.
Article
Chemistry, Physical
Hai-Tao Ren, Meng-Zhen Jing, Da-Shuai Li, Ting-Ting Li, Ching-Wen Lou, Jia-Horng Lin, Xu Han
Summary: In this study, the photocatalytic reduction of Cr(VI) in water by polydopamine modified Bi2.15WO6 (PDA/BWO) under visible light was investigated. The results revealed that PDA greatly enhances the reduction of Cr(VI) and the formed ligand-to-metal charge transfer (LMCT) complex [Bi(III)-O-C] between PDA and BWO plays a crucial role in improving the photocatalytic activity. The study provides new insights into the paths of Cr(VI) reduction by PDA/BWO under visible light.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Nur Shamimie Nadzwin Hasnan, Mohamad Azuwa Mohamed, Nurul Atikah Nordin, Wan Nor Roslam Wan Ishak, Mohammad B. Kassim
Summary: This study explores the use of kapok fiber with microtubular structure as a solid electron donor to enhance the photocatalytic activity of C-doped g-C3N4. The hybrid complex of CCN grafted on t-KF is successfully developed, resulting in higher photocatalytic activity for H2O2 production under visible light irradiation.
CARBOHYDRATE POLYMERS
(2023)
Article
Nanoscience & Nanotechnology
Yuan Chen, Peng-Min Wang, Zi-Tong Chen, Bao Li
Summary: Two-dimensional metal-organic layer nanosheets, as nonhomogeneous catalysts, have better optical activity in the field of photocatalysis due to their unique structural advantages. Current research focuses on modifying the structure of these nanosheets through crystal engineering to modulate electron transfer pathways and investigate the impacts of size effect and electron transfer pathway on energy utilization efficiency of crystalline materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Caidie Qin, Juanjuan Tang, Ruxia Qiao, Sijie Lin
Summary: This study found that tetracycline can effectively sensitize pure TiO2 for visible light photocatalytic degradation through a charge transfer mechanism. The intermediate degradation products of tetracycline show reduced bactericidal effects and less induction of antibiotic-resistance genes. This study demonstrates an effective method for treating antibiotics-contaminated wastewater using TiO2.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Jun Han, Zebin Zhu, Najun Li, Dongyun Chen, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu
Summary: A series of porphyrin-based D-A type conjugated organic polymer nanotubes were synthesized via acid-catalyzed Schiff base reaction. Among them, CuTAPP-BT showed superior photocatalytic activity and recyclability for BPA degradation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Jiaxu Liu, Yajun Zou, Daniel Cruz, Aleksandr Savateev, Markus Antonietti, Gianvito Vile
Summary: By adjusting the textural properties of materials, highly dispersed metal single atoms can be achieved on mesoporous graphitic C3N4, enabling ligand-to-metal charge transfer or ligand-to-metal-to-ligand charge transfer. The developed materials can be used to efficiently degrade organic pollutants under visible light irradiation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Wanqi Su, Peng Xu, Tobias Ritter
Summary: In this study, a novel method for synthesizing phenols from benzoic acids via photoinduced radical decarboxylation was reported. The method offers mild conditions, broad substrate scope, and potential for late-stage applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Meiyang Wang, Han Yu, Pan Wang, Zexu Chi, Zhenzong Zhang, Binbin Dong, Heng Dong, Kai Yu, Hongbing Yu
Summary: The novel Z-scheme ternary heterojunction BVP/GQDs/PCN demonstrated excellent visible light photocatalytic activity and NOR degradation performance, outperforming traditional binary heterojunctions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yilin Zhang, Yanxia Zheng, Xuelian Yu
Summary: Due to the efficient transfer of charges, two-dimensional hetero-junctions have gained significant attention in the field of photocatalysts. However, achieving close interface contact between different materials remains a major challenge. In this study, the hydrogen bonding in graphene carbon nitride (CN) was broken down by alkali conditions, leading to the formation of highly dispersed water-soluble nanowires (S-CN). The self-assembly of S-CN on rGO nanosheets was achieved by recombining hydrogen bonding, resulting in a 2D heterojunction with intimate interfacial contact. The S-CN/rGO (2%) composite exhibited excellent photocatalytic hydrogen production performance, surpassing that of CN/rGO (2%) by five times. Characterization techniques such as FTIR, TEM, XPS, and i-t were employed to investigate the efficient charge transportation and photocatalytic mechanism in the 2D heterostructure. This work provides a new approach for developing novel 2D heterojunctions through intermolecular self-assembly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Xiaofang Zhang, Hongxia Sun, Chuanjiang Pan, Xuanyi Wu, Li Lin, Sangang Lou
Summary: A new p-n type CBO/CN/RGO ternary heterojunction photocatalyst was successfully prepared by ionic liquid-assisted hydrothermal method, which combined three-dimensional multi-stage rosette CuBi2O4 and two-dimensional g-C3N4 and RGO flakes. The construction of p-n heterojunctions significantly improved the transfer and transport speed of photogenerated carriers. The photocatalytic degradation of MO by CBO/CN/RGO-6% reached 91.83% within 150 min, with degradation kinetics constants higher than single-phase CBO and g-C3N4. The CBO/CN/RGO-6% composites showed good chemical stability and are expected to be a preferred material for environmental wastewater treatment.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Mari Irikura, Yusuke Tamaki, Osamu Ishitani
Summary: The heteroleptic osmium(ii) complex demonstrated the ability to absorb the full wavelength range of visible light and function as a panchromatic redox photosensitizer. It was able to catalyze the reduction of CO2 to HCOOH under light irradiation, showcasing its potential for diverse photocatalytic applications.
Review
Chemistry, Multidisciplinary
Winald R. Kitzmann, Katja Heinze
Summary: Transition metal complexes with photoactive charge-transfer excited states, such as [Ru(bpy)(3)](2+) and [Cr(ddpd)(2)](3+), have been widely studied. The properties of emissive charge-transfer and spin-flip states, including their energy and lifetimes, as well as their responses to external stimuli, are discussed in this Review. The strengths and weaknesses of these states in applications like photocatalysis and circularly polarized luminescence are also identified.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Huiling Zhong, Chengjing Lu, Xiao-Li Sun, Yongjin Luo, Qingrong Qian, Hun Xue, Min-Quan Yang
Summary: In this study, visible-light-driven photocatalysts based on the ligand-to-metal charge transfer (LMCT) mechanism were developed to efficiently split aromatic alcohols into H-2 and aldehydes over TiO2. TiO2 catalysts with different surface contents of -OH were synthesized using hydrothermal and calcination synthesis methods. Experimental characterizations revealed that the surface -OH significantly influenced the formation of LMCT complexes and thus the photocatalytic performance. This work is expected to inspire further research on the design and fabrication of visible-light-driven photocatalyst systems for the simultaneous synthesis of clean fuel and fine chemicals.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)