Article
Engineering, Environmental
Peidong Su, Junke Zhang, Yihao Zhou, Zhen Wei, Shen Zhao, Bo Yang, Xu Zhao, Jun Chen
Summary: A Z-scheme heterostructure was successfully prepared between RF resin and g-C3N4 by mechanochemical method, which not only generated C=O group at a lower temperature (180°C), but also produced as high as 72.86 umol H2O2 in 12 h under visible light, 2.37 times higher than that of bare RF resin. This study provides a new approach for low-cost and high-performance H2O2 production under visible light.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xufei Li, Yanling Qiu, Zhiliang Zhu, Hua Zhang, Daqiang Yin
Summary: In this study, a novel recyclable Z-scheme g-C3N4/carbon nanotubes/Bi25FeO40 (CN/CNT/BFO) heterojunction photocatalyst was successfully fabricated. The mechanism analysis indicated that the CNT mediated Z-scheme heterojunction led to enhanced photocatalytic performance, resulting in outstanding separation of photoexcited electron-hole pairs and high redox ability during photocatalysis. The CN/CNT/BFO heterojunction exhibited wide pH adaptability, excellent magnetic recyclability, and stability, showing promising potential for environmental applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Fellipe Magioli Cadan, Caue Ribeiro, Eduardo Bessa Azevedo
Summary: This study optimized the synthesis of g-C3N4 using the Response Surface Methodology and successfully prepared g-C3N4:WO3 heterojunctions, demonstrating good materials homogenization and high photocatalytic activity. A mechanism for the heterostructure photocatalysis was proposed based on theoretical and experimental results.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Qiaoyun Wang, Nasiman Tuerxun, Lu Xiao, Yu Wang, Caijin Huang, Hong Du
Summary: Ni3FeN nanosheets were synthesized using urea as a nitrogen source, and a heterostructure of Ni3FeN/g-C3N4 was constructed to enhance the absorption of visible light. The Ni3FeN/g-C3N4 heterojunction demonstrated excellent visible-light photocatalytic activity and bimetallic nitrides as cocatalysts were found to enhance the performance of photocatalysts. The study highlights the feasibility of using Ni3FeN as a cocatalyst in photocatalytic hydrogen production.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Applied
Ying Yang, Feng Yang, Zelin Li, Na Zhang, Shijie Hao
Summary: The mesoporous Z-scheme g-C3N4/C/S-g-C3N4 heterostructural nanotube demonstrated high efficiency in degrading MB, RhB, and CR, achieving a remarkable reaction rate for MB degradation under visible light irradiation. The in situ fabrication of high surface area g-C3N4/C/S-g-C3N4 heterostructural nanotube represents a promising approach for enhancing the porous structure and photocatalytic performance of ternary Z-scheme photocatalysts.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Environmental Sciences
Yuzhen Li, Zhen Li, Yunsheng Xia, Houfen Li, Jianhui Shi, Aiming Zhang, Haohao Huo, Siyang Tan, Lizhen Gao
Summary: The preparation of a plasmonic photocatalyst with AgBr/BiPO4/g-C3N4 was investigated in order to degrade Reactive Blue 19. Through various analyses, it was determined that O•2- is the main active species in the photocatalytic process for degrading the dye. synergistic effects at the AgBr/BiPO4/g-C3N4 interface were also found to play a crucial role in the efficiency of the photocatalytic process.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Applied
Qing-Wen Gui, Fan Teng, Peng Yu, Yi-Fan Wu, Zhi-Bin Nong, Long-Xi Yang, Xiang Chen, Tian-Bao Yang, Wei -Min He
Summary: The Z-scheme V2O5/g-C3N4 heterojunction was employed in a heterogeneous visible light-induced cascade reaction to synthesize phosphorylated ring-fused quinazolinones. Both the photogenerated hole and photogenerated electron played a crucial role in the radical cascade process.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Engineering, Environmental
Xiaoyan Lian, Wenhua Xue, Shuai Dong, Enzhou Liu, Hui Li, Kangzhen Xu
Summary: Photocatalysis technology is seen as a promising environmental remediation strategy, with the use of Bi2WO6/g-C3N4 heterostructure nanosheets showing high efficiency in degrading ammonium dinitramide. Under optimized conditions, the composite exhibits excellent stability and generates nitrate ions as the main degradation products. The proposed S-scheme heterojunction mechanism helps explain the high REDOX performance of the BWO/CN composite.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Ahmed E. Hassan, Mohamed Hammad Elsayed, Mai S. A. Hussien, Mohamed Gamal Mohamed, Shiao-Wei Kuo, Ho-Hsiu Chou, Ibrahim S. Yahia, Tarek A. Mohamed, Zhenhai Wen
Summary: In this study, V2O5/N-deficient g-C3N4 (VO/Ndef-CN) nanocomposites were successfully prepared and characterized by various techniques. The synthesized nanocomposites exhibit efficient bifunctional photocatalytic properties for hydrogen generation and pollutants degradation (dye and antibiotic). The optimized 5VO/Ndef-CN photocatalyst shows improved photoactivity for H2 production, fast degradation of organic pollutants, and high photocatalytic stability under visible light irradiation, attributed to the presence of N defects and S-scheme heterojunction formation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Ya-Ni Zang, Shan-Shan Yang, Jie Ding, Shuang-Yang Zhao, Cheng-Xin Chen, Lei He, Nan-Qi Ren
Summary: The ternary BC/VO/CN composite was prepared by a simple hydrothermal method, where VO nanoparticles were highly crystalline and intertwined with CN lamellas to form well-defined Z-type heterostructures. Under simulated solar irradiation, the BC/VO/CN hybrid materials showed significantly enhanced photocatalytic activity compared to CN, VO, and VO/CN.
Article
Engineering, Environmental
Xing Wang, Guangtong Hai, Baozhen Li, Qingjie Luan, Wenjun Dong, Ge Wang
Summary: The study achieved a high H2 evolution rate by constructing a dual-Z-scheme heterojunction. The designed WS2-WO3.H2O/g-C3N4 catalyst effectively separated and migrated carriers, increased the exposure of active sites, and efficiently suppressed carrier recombination.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
R. Madhushree, U. C. Jadan Resnik Jaleel, Dephan Pinheiro, N. K. Renuka, K. R. Sunaja Devi, Juhyeon Park, Sivakumar Manickam, Myong Yong Choi
Summary: The synthesis of bilayer heterojunctions has recently gained significant attention. Fabrication of novel bilayer composites is important for improving photocatalytic efficiency. In this study, molybdenum disulfide/graphitic carbon nitride/zinc oxide ternary composites were successfully prepared and showed excellent photocatalytic performance.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Zhuzhu Zhang, Rui Ji, Qimeng Sun, Jinghui He, Dongyun Chen, Najun Li, Hua Li, Antonio Marcomini, Qingfeng Xu, Jianmei Lu
Summary: Constructing photocatalysts with excellent visible light utilization efficiency and high-efficiency photo-generated charge transfer rate is crucial for the photodegradation of organic pollutants in wastewater. In this study, oxygen-doped graphitic carbon nitride (g-C3N4) was prepared and used as a responsive material for a wide range of visible light. CdS nanoparticles were then anchored onto the g-C3N4 to form a Z-scheme heterojunction, which facilitated interfacial charge separation. The results showed that the oxygen-doped g-C3N4/CdS-3 displayed a significantly higher degradation rate for 2-chlorophenol compared to g-C3N4.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Yuwei Wang, Kelin Xu, Liquan Fan, Yongwang Jiang, Ying Yue, Hongge Jia
Summary: Black TiO2 with abundant oxygen vacancies (OVs)/B-doped graphitic carbon nitride (g-C3N4) Z-scheme heterojunction nanocomposites were prepared by a one-pot strategy. The OVs enhance photogenerated carrier separation and the sorption and activation of antibiotic compounds (tetracycline hydrochloride, TC). The prepared heterojunction photocatalysts with a narrow bandgap of similar to 2.13 eV exhibit excellent photocatalytic activity for the degradation of tetracycline hydrochloride (65%) under visible light irradiation within 30 min, which is several times higher than that of the pristine one. The outstanding photocatalytic property can be attributed to abundant OVs and B element-doping reducing the bandgap and extending the photo-response to the visible light region, the Z-scheme formation of heterojunctions preventing the recombination of photogenerated electrons and holes, and promoting their effective separation.
Article
Engineering, Environmental
Zi-Jun Chen, Hai Guo, Hui-Yun Liu, Cheng-Gang Niu, Da-Wei Huang, Ya-Ya Yang, Chao Liang, Lu Li, Jin-Cheng Li
Summary: The construction of S-scheme heterojunction has been proven to be a promising method to improve the degradation performance of photocatalysts. In this study, Ag2CO3/Bi4O5I2/g-C3N4 dual S-scheme heterojunction material was designed and constructed, showing remarkably enhanced photocatalytic performance in tetracycline degradation. The study expands the application range of g-C3N4 material and discusses the reaction mechanism in detail.
CHEMICAL ENGINEERING JOURNAL
(2022)
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)