Article
Engineering, Environmental
Alba Hernandez-Zanoletty, Oscar Cabezuelo, Agustin Paris-Reche, Isabel Oller, M. Inmaculada Polo-Lopez, Ana Aguera, Patricia Plaza, M. Luisa Marin, Francisco Bosca, Sixto Malato
Summary: This study evaluated the application of TiO2 photocatalysts supported on glass wool and silica material for urban wastewater treatment. The SiO2_TiO2 photocatalyst showed high and stable performance in removing pollutants in water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Ethan Dern Huang Kong, Jenny Hui Foong Chau, Chin Wei Lai, Cheng Seong Khe, Gaurav Sharma, Amit Kumar, Suchart Siengchin, Mavinkere Rangappa Sanjay
Summary: Water pollution is a global issue that conventional methods struggle to solve, but photocatalysis, especially with GO/TiO2 composites, shows promising results in wastewater treatment.
Article
Environmental Sciences
Shehzad Ahmad, Muhammad Suleman Tahir, Ghulam Mustafa Kamal, Xu Zhang, Saima Nazir, Muhammad Bilal Tahir, Bin Jiang, Muhammad Safdar
Summary: Water contamination caused by industrial processes remains a major issue in the 21st century. Utilizing sunlight in photocatalysis proves to be an efficient method for wastewater purification. Composite materials consisting of TiO2/activated carbon/two-dimensional selenides outperform individual components or binary composites for this application. Through a hydrothermal technique, photocatalytic composites were synthesized and characterized using UV-Visible spectroscopy, FTIR, XRD, and SEM. The heterostructures effectively absorb UV and visible light, which is converted into reducing electrons and oxidizing species to decompose organic pollutants in industrial wastewater.
Review
Energy & Fuels
Feiyan Xu, Haiyan Tan, Jiajie Fan, Bei Cheng, Jiaguo Yu, Jingsan Xu
Summary: Solar-driven semiconductor photocatalysis using electrospun TiO2 nanofibers shows great potential to solve energy and environmental crises. The unique unwoven nanofibrous network facilitates mass transportation, making them ideal substrates for growing secondary nanostructures and constructing heterojunction photocatalysts. Strategies to load electron or hole cocatalysts and hybridize secondary semiconductors enhance electron-hole separation, light absorption, and photocatalytic performance of electrospun TiO2 NFs.
Article
Engineering, Environmental
Agnieszka Sienkiewicz, Agnieszka Wanag, Ewelina Kusiak-Nejman, Ewa Ekiert, Paulina Rokicka-Konieczna, Antoni W. Morawski
Summary: This article examines the influence of calcination temperature on the photocatalytic properties and stability of titanium dioxide modified with 3-aminopropyltriethoxysilane (APTES).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Biochemistry & Molecular Biology
Luminita Isac, Alexandru Enesca
Summary: This article discusses the applications of ZnS nanostructures and ZnS-based heterojunctions in removing organic pollutants, utilizing UV, visible light, and sunlight in wastewater treatment. The effects of different synthesis parameters and properties on the photocatalytic performance of ZnS-based photocatalysts are extensively explored.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Environmental Sciences
Chunmu Yu, Xiaojuan Chen, Ning Li, Yue Zhang, Sailin Li, Jieming Chen, Liang Yao, Kaichun Lin, Yiqi Lai, Xinru Deng
Summary: Semiconductor photocatalysis technology utilizing solar energy has great potential in organic pollutant removal. Silver phosphate (Ag3PO4) is a visible light responsive semiconductor photocatalyst with strong oxidation ability, but electron sacrifice agents are required for its high oxidation activity. This review discusses the structural characteristics, preparation methods, and approaches to enhance the catalytic activity and recycling efficiency of Ag3PO4-based catalysts. It provides insights into the advantages and disadvantages of Ag3PO4 in photocatalysis and offers valuable information for the treatment of organic polluted wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Engineering, Environmental
Kunal G. Thakre, Divya P. Barai, Bharat A. Bhanvase
Summary: Advancements in nanomaterials have provided new methods for wastewater treatment, particularly semiconductor materials like TiO2 and ZnO showing promising applications in photocatalytic wastewater treatment. Graphene nanocomposites are also being extensively researched for environmental remediation due to their superior properties, such as physical, optical, thermal, and electronic capabilities.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Anirban Chakraborty, Samriti, Olim Ruzimuradov, Raju Kumar Gupta, Junghyun Cho, Jai Prakash
Summary: This review focuses on the hydrothermal synthesis of three-dimensional titanium dioxide nanoflower structures (3D TiO2 NFs) and the effect of shape/size and other key synthesis parameters on their optoelectronic and photocatalytic properties. The strategies to improve their photocatalytic properties, such as doping engineering and the formation of heterojunction/nanocomposites with other functional nanomaterials, are also discussed, along with their potential applications in the photocatalytic degradation of various emerging pollutants in wastewater.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Jia-Ying Li, Zheng-Qian Liu, Yu-Hong Cui, Sui-Qin Yang, Jia Gu, Jun Ma
Summary: A novel method using heat/persulfate (PDS) process for treating high-temperature wastewaters by converting pollutants to separable solid polymers is explored. This process allows simultaneous decontamination and carbon recovery with minimal use of PDS, which differs significantly from conventional degradation processes. The feasibility of this method is demonstrated by treating eight typical organic pollutants and a real coking wastewater. The results show high DOC abatement and carbon recovery rates, with low PDS consumption compared to conventional degradation processes. Phenol was used as a representative compound to demonstrate the applicability of the polymerization-based heat/PDS process across a wide pH range, with high carbon recovery. Both SO4 center dot- and HO center dot can initiate polymerization with different contributions under various conditions. Phenol monomers are semioxidized to form phenolic radicals, which then polymerize to form separable solid phenol polymers, benzenediol polymers, and cross-linked polymers.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Ajit Das, Mrinal K. Adak, Nagendranath Mahata, Bhaskar Biswas
Summary: This review provides an overview of the development of TiO2-based photocatalytic systems and new functionalized photocatalysts, their kinetic studies, and the role of scavengers related to the advance and modified processes in wastewater treatment. Additionally, the treatment of real wastewater in the industrial sector and the futuristic cost-effective alternative with high catalytic capacity have been outlined.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Nurshahnawal Yaacob, Goh Pei Sean, Noor Aina Mohd Nazri, Ahmad Fauzi Ismail, Muhammad Nidzhom Zainol Abidin, Mahesan Naidu Subramaniam
Summary: By doping ZrO2 into TiO2, ZrO2-TiO2 heterojunction photocatalysts were successfully synthesized, showing smaller crystallite size with higher surface area and mesopores volume.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
R. Suresh, Saravanan Rajendran, P. Senthil Kumar, Dai-Viet N. Vo, Lorena Cornejo-Ponce
Summary: Research indicates that binary nanocomposites based on MFe2O4 as photocatalysts have potential applications in water purification technology, especially in the treatment of dyes, emerging contaminants, and inorganic pollutants. Further studies are needed to explore their practical utilization in water treatment plants.
Review
Environmental Sciences
Baowei Wang, Yu Wang
Summary: This paper summarizes the research progress of PS activation methods in the field of wastewater treatment, including the advantages, disadvantages, and influencing factors of various physical and chemical activation methods. The possible activation mechanisms are discussed, and future development directions are pointed out.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Arezou Saadati, Aziz Habibi-Yangjeh, Alireza Khataee
Summary: In this study, quantum dot-sized photocatalysts were prepared by combining brown TiO2-x with Cu3Mo2O9 nanoparticles through hydrothermal method and subsequent calcination. The optical, electrochemical, textural, structural, and morphological features of the photocatalysts were investigated using various techniques. The photocatalytic performance of the materials in removing different pollutants was evaluated in the presence of persulfate ions (PS) under visible light. The TiO2-x/Cu3Mo2O9 (1%)/PS system showed efficient degradation of tetracycline (TC), cephalexin (CFX), fuchsine (FS), and methyl orange (MO), with rate constants significantly higher compared to other systems. The quenching tests confirmed the involvement of reactive species such as O·-, h+, O·H, and SO·-. A Z-scheme mechanism was proposed for the degradation reactions by the TiO2-x/Cu3Mo2O9 /PS system.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)