Article
Metallurgy & Metallurgical Engineering
Xuxia Zhao, Yimin Zhang, Nannan Xue, Pengcheng Hu, Qiushi Zheng, Yibo Hu
Summary: Currently, the extraction of vanadium from vanadium-bearing shale by direct acid leaching is inefficient due to the insufficient release of vanadium from mica, which requires a large amount of acid. To improve this, a mechano-chemical activation-assisted acid-leaching process was developed in this study. The study examined the effects of mechano-chemical activation parameters on vanadium dissolution in an acid system. The conditions used increased the vanadium leaching efficiency from 82.3% to 90.3%.
Article
Engineering, Chemical
Pengcheng Hu, Yimin Zhang, Hong Liu, Tao Liu, Sheng Li, Ruobing Zhang, Zhijie Guo
Summary: In this research, a two-stage leaching process was proposed to extract vanadium efficiently from the by-product of vanadium titanium magnetite BOF steelmaking process, vanadium slag (VS). The total leaching efficiency of vanadium can reach as high as 98.52% by sodium roasting-water leaching for VS and sulfuric acid leaching for water leaching residue (WLR). The mechanism analysis indicates that the structures of wrapping phases and spinel can be effectively destroyed by acid leaching, releasing vanadium in WLR.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Liushun Wu, Chao Dai, Haichuan Wang, Jue Wang, Yuanchi Dong
Summary: In this study, hydrogen peroxide was used to oxidize the sulfur in spent catalyst, forming sulfuric acid to leach out metals. Experimental results showed that the leaching efficiency of vanadium increased with hydrogen peroxide concentration, while other parameters had minor effects on potassium and iron leaching efficiencies. The optimum leaching conditions for vanadium were identified, with high efficiencies achieved for vanadium, potassium, and iron.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Green & Sustainable Science & Technology
Changda Zhang, Qiusheng Zhou, Yilin Wang, Leiting Shen, Tiangui Qi, Guihua Liu, Zhihong Peng, Xiaobin Li
Summary: This study proposes a novel and sustainable process for separating and recovering vanadium from Bayer vanadium sludge, through phosphate removal by CaCO3, vanadium precipitation by BaCO3, and NH4HCO3 leaching. The process achieves high efficiency and environmental friendliness, saving costs and avoiding effluent pollution.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Sheng Li, Yimin Zhang, Yizhong Yuan, Pengcheng Hu
Summary: Microwave heating was used to improve acid leaching in this study. The effects of various factors on vanadium recovery were investigated through analysis and simulation. A vanadium recovery of 80.66% was achieved using microwave heating. Compared to conventional leaching, microwave-assisted leaching increased vanadium recovery by 6.18% and reduced leaching time by 79.17%.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Geochemistry & Geophysics
Han Yang, Yan Liu, Xingyuan Wan, Tingan Zhang, Shengnan Lin, Kun Wang, Xiaolong Li
Summary: In this study, the effects of the CaO/V2O5 ratio on the microstructure and phase composition of molten vanadium slag were investigated. Molecular dynamics simulation demonstrated that with increased CaO content, the diffusivity of the system increased and the network structure was destroyed. The addition of CaO enabled the reconstruction of the mineral phase of vanadium slag, resulting in a more concentrated vanadium distribution and higher concentration of vanadium in vanadium spinel.
Article
Materials Science, Multidisciplinary
Shenxu Bao, Yongpeng Luo, Yimin Zhang
Summary: The aim of this investigation was to prepare a geopolymeric precursor from vanadium tailing through thermal activation and modification. The research found that during thermal activation, the vanadium tailing was corroded by sodium hydroxide, forming a sodium silicate coating. When water was added, the sodium silicate coating dissolved and released silicon species, creating an alkaline solution environment. Metakaolin dissolved in the alkaline environment to generate aluminum species, which then underwent geopolymerization to produce a geopolymer with excellent mechanical performance. This investigation improves the feasibility of using geopolymer technology for large-scale and in-situ applications, and promotes the utilization of vanadium tailing and other silica-rich solid wastes.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zhixiang Wang, Zhonghui Peng, Yang Li, Yongze Zhu, Keqiang Xie
Summary: A new method of sulfuric acid cyclic leaching was proposed to selectively leach vanadium from vanadium titanomagnetite pellets. Cyclic leaching yielded higher vanadium leaching rates and lower iron and titanium leaching rates compared to conventional heap leaching. Under optimal cyclic leaching conditions, the leaching rates of vanadium, iron, and titanium were 80.28%, 1.39%, and 1.72% respectively. The study also analyzed the valence states of vanadium and iron in the pellets before and after leaching, as well as the main phases in the pellets.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Qing Lin, Guoquan Zhang, Kun Wang, Dongmei Luo, Siyang Tang, Hairong Yue
Summary: Compared with traditional methods, the ammonium sulfate roasting process for vanadium extraction has lower roasting temperature and reduced waste discharge. An efficient two-stage cyclic roasting and acid leaching process was proposed, which can extract high proportions of vanadium and titanium in a shorter time.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Zhenghao Wang, Zhifeng Qin, Liang Chen, Bin Liang, Yingming Zhu, Kejing Wu, Dongmei Luo
Summary: An environmentally friendly strategy for the direct recovery of low valence vanadium (LVV) from vanadium slag was proposed and investigated. The recovery of LVV was 68.38% in atmospheric leaching and increased to 98.34% in high-temperature self-pressure leaching conditions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Materials Science, Multidisciplinary
Kai Zou, Junhui Xiao, Guanjie Liang, Wenxiao Huang, Wenliang Xiong
Summary: A new bauxite-type vanadium ore was discovered in Hanzhong, China, with a novel low-temperature sulfating roasting-water leaching process developed to extract vanadium from the ore efficiently. The addition of sulfuric acid and ammonium molybdate improved the conversion and leaching efficiency, resulting in a high leaching efficiency of 90.33% under optimal test conditions. Calculation results supported the feasibility of forming NaVO3.
Article
Chemistry, Multidisciplinary
Huayi Tan, Bingqiang Fan, Shili Zheng, Yang Zhang
Summary: Based on the characteristics of complexation reactions, a novel method was proposed for the recovery and separation of vanadium (V), molybdenum (Mo), and nickel (Ni) from the roasting slag of carbon black byproduct. The method selectively leached V and Mo using oxalic acid as a complexing agent, followed by decomplexing and recycling of oxalic acid. Hexamethylenetetramine (HMT) was used to treat the solution containing V and Mo, resulting in the precipitation of Mo complexes. The precipitated Mo complexes were dissociated using calcium oxide, allowing for the separation and recovery of Mo and regeneration of HMT. This method provides an efficient and sustainable way to recover and separate V, Mo, and Ni from industrial waste.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Jianzhang Wang, Shaona Wang, Afolabi Olayiwola, Na Yang, Biao Liu, Jan J. Weigand, Marco Wenzel, Hao Du
Summary: A process of blank roasting-alkaline leaching is proposed to recover spent hydrodesulfurization (HDS) catalysts, with promising results of high leaching efficiency for vanadium, molybdenum, and aluminum under different roasting conditions. The method offers flexibility in controlling leaching of V, Mo, and Al, and achieves clean separation of metals, providing fundamental information for future development of more efficient and cleaner technologies.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Nan-nan Xue, Yi-min Zhang, Tao Liu, Qiushi Zheng
Summary: The study investigated a two-stage pressurized acid leaching coupled with lixivium recycling for the green efficient separation of black shale-hosted vanadium. Results showed that selective leaching of vanadium and synchronous precipitation of Fe and Al as kalunite-jarosite solid solution were achieved under optimized conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Tian Wang, Jing Ren, Annavarapu Ravindra, Yan Lv, Thiquynhxuan Le
Summary: This study investigates the properties and distribution of Ni, V, and Fe in the SFCC catalyst using EPMA-EDX, SEM, and XPS techniques. The leaching kinetics of Ni, V, Fe, and Al in different acids are studied under microwave heating. The results show that sulfuric acid is more effective in removing contaminant metals, especially Ni. The leaching kinetics indicate that V has a lower activation energy compared to Fe and Ni, with the removal priority being V > Fe > Ni.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)