Journal of Sustainable Metallurgy
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2025
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IF 3.2
Mi Jiayu,Wang Zhenqiang,Qiu Yuqing,Chen Xingyu,Chen Ailiang,Liu Xuheng,Li Jiangtao,He Lihua,Sun Fenglong,Zhao Zhongwei
The leaching agents for molybdenum calcine are mainly acid and alkali solutions represented by ammonia water, which have poor selectivity for molybdenum and are not environmentally friendly. Therefore, a novel leaching agent which can avoid the aforementioned problems needs to be sought. Given that molybdenum in molybdenum calcine mainly exists in the form of molybdenum trioxide, this research investigated the dissolution behavior of molybdenum trioxide in sodium molybdate solution under different process conditions was studied, and the leaching of molybdenum calcine in sodium molybdate solution was preliminarily tested. The Raman characterization results of the dissolution system indicated that molybdenum trioxide and sodium molybdate with low polymerized states can form high polymerized molybdate through self-coordination reaction. The optimal dissolution conditions were 85 °C, pH 8.00, initial molybdenum concentration 26.78 g/L. Under the optimal conditions, the dissolution capacity of molybdenum trioxide in sodium molybdate can reach 2.460 g/g. The preliminary leaching test indicated that the sodium molybdate system had a high selectivity for molybdenum in molybdenum calcine, and the leaching ratio of molybdenum was 96.4%. This study confirmed the feasibility of sodium molybdate as a leaching agent for molybdenum calcine and laid a theoretical foundation for the leaching process of molybdenum calcine. Graphical
研究领域:
化学工程
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环境科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Wei Gao,Yuyan Wang,Ming Zhong,Huichun Kang,Bitao Su,Ziqiang Lei
Currently, the majority of photocatalytic materials primarily consist of insoluble semiconductors, whereas soluble semiconductor materials have limited applications in photocatalysis. In this study, it is proposed for the first time to use the soluble semiconductor sodium molybdate (Na 2 MoO 4 ) as a sacrificial agent to fabricate a polyacrylic acid/sodium molybdate-Fe 3+ hydrogel photocatalyst (PAA/Na 2 MoO 4 -Fe 3+ ) through polymerization with Fe 3+ ions and acrylic acid (AA) monomer. The hydrogel photocatalyst was thoroughly characterized and the results revealed that the presence of Na 2 MoO 4 in ionic form within the hydrogel significantly enhanced its adsorption capacity for pollutant molecules. Additionally, Fe 3+ ions coordinated with -COOH ( L ) groups on PAA to form [Fe( L ) 6 ] 3+ ions, which acted as active sites of photocatalytic. Moreover, the PAA/Na 2 MoO 4 -Fe 3+ hydrogel exhibited promising potential as a photocatalyst for the remove of dye pollutants (e.g. MB, MG, RhB and MO) from wastewater. Finally, we also explored and analyzed the photocatalytic mechanism of the hydrogel. It is noteworthy to conclude that the hydrogel possesses immense potential for the practical application of photocatalytic techniques in the treatment of dyes wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Guo Feng,Zhicheng Wang,Jun Mu,Feng Jiang,Yanqiao Xu,Qian Wu,Quan Zhang,Qing Hu,Jianmin Liu,Jian Liang
Herein, novel stabilized aluminum titanate whiskers were prepared via the molten salt method using alumina as the aluminum source, titania as the titanium source, magnesium carbonate as the stabilizer, and sodium molybdate as the molten salt. The influence of the amount of molten salt on the one-dimensional selectivity of the stabilized aluminum titanate whiskers was examined using XRD, SEM, TEM and other established testing methods, and the growth mechanism of aluminum titanate whiskers was discussed. The results confirmed that an excessive or insufficient amount of molten salt sodium molybdate is not conducive to the preparation of stabilized aluminum titanate whiskers. The optimum molten salt amount to be added is a molar ratio of 20% to aluminum titanate. A high yield of stabilized aluminum titanate whiskers, with diameters ranging from 20–60 μm and an aspect ratio >10 can be prepared by holding the sample at 1300°C for 6 h. The growth direction of the stabilized aluminum titanate whiskers is the [100] direction.
研究领域:
材料科学
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陶瓷学
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纳米材料
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晶体生长
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2019
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IF 6.97
Zhiyong Zhou,Haotian Liu,Jiahui Fan,Xueting Liu,Yafei Hu,Yulei Hu,Yong Wang,Zhongqi Ren
Sodium phosphomolybdate with a spatial stereo symmetry structure and stability in acid and alkali was used as a new coextraction agent for separating Li+. In addition, methyl isobutyl ketone and tributyl phosphate were used as diluent and extractant, respectively. The influence of operation conditions on separation performance of lithium ion was investigated. The single stage extraction efficiency of Li+ was 58.74% with the volume fraction of tributyl phosphate, O/A phase ratio, and molar ratio of sodium phosphomolybdate to lithium as 40%, 3.6, and 1, respectively. Then the cross-flow and saturated extraction experiments were conducted. When 0.2 mol/L LiCl + 1.8 mol/L NaCl solution was used as washing agent and O/A phase ratio was 3, the washing efficiency of Mg2+ reached up to 99.59%. When 0.26 mol/L HCl solution was used as stripping agent and O/A phase ratio was 3, the stripping efficiency of Li+ reached 98.3%. The difference in extraction efficiency was within 6.5% through 10 recyclings of the organic phase, indicating that the coextraction agent was very stable. The extraction mechanism was investigated and the binding ability of P═O in tributyl phosphate molecule followed the sequence Li+ ≫ Na+ > K+ > Mg2+.
研究领域:
化学工程
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材料科学
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环境化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Kehui Xue,Lianqing Yu,Chong Liu,Huihua Luo,Yaping Zhang,Haifeng Zhu,Wei Xing
Photoelectrochemical (PEC) devices could play a significant role in efficient solar-to-fuel production for a sustainable economy. Herein, we report a significant enhancement of PEC water splitting via rational tailoring of ferromagnetic ordered oxygen evolution cocatalysts (OECs) iron-cobalt oxide on the Mo-doped BiVO 4 (Mo:BiVO 4 ) surface. The Fe 3+ and Co 2+ tend to form an optimal electron-filled arrangement, contributing to lower barriers for the oxygen evolution reaction (OER). Benefiting from the Fe/Co dual-site as the catalytic center, the prepared FeCoO x /Mo:BiVO 4 photoanode achieves 4.55 mA·cm −2 at 1.23 V vs reversible hydrogen electrode (RHE) with a lower starting potential for OER, outperforming the FeO x /Mo:BiVO 4 (2.71 mA·cm −2 ) and CoO x /Mo:BiVO 4 (3.48 mA·cm −2 ). Importantly, ferromagnetic iron-cobalt oxide as the spin polarizer can optimize the OER kinetics. Under spin-related effects, a magnetic stimulation strategy can further enhance the spin alignment. The corresponding photocurrent of FeCoO x /Mo:BiVO 4 is increased up to 5.15 mA·cm −2 under a magnetic field, with η Sep and η Trans reaching 89 % and 91 %, respectively. Specifically, the spin-polarization process will be helpful for the production of O(↓)O(↓)H intermediates, preferring to produce O 2 . Hence, this study provides a new pathway for designing highly efficient PEC water splitting systems on magnetic-assisted photoelectrodes.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
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IF 8.9
Hongliang Ding,Chuanshen Wang,Jue Wang,Lini Wu,Na Sun,Hongfei He,Lu Liu,Wei Wang,Keqing Zhou,Wei Zhang,Bin Yu
Rigid polyurethane foams (RPUFs) are widely used for their excellent performance but are limited by their flammability. Flame-retardant coatings are an effective solution to address this issue without compromising their mechanical properties. Herein, flame-retardant copolymer poly(HBA-co-VBS) is synthesized via radical copolymerization of hydroxybutyl acrylate (HBA) and sodium 4-vinylbenzenesulfinate (VBS). A series of transition metal oxide-loaded halloysite nanotubes (Mo-HNTs, Co-HNTs) and hexagonal boron nitride (Mo-BN, Co-BN) are synthesized via impregnation method to prepare organic–inorganic hybrid flame-retardant coatings. The coated RPUFs reach V-0 rating in the UL-94 test with higher LOI over 31 %. Co-HNTs sample exhibits the best flame-retardant performance with the lowest PHRR (142.5 kW m −2 ) and lowest THR (49.9 MJ m −2 ). Inorganic nanoparticles reduce toxic gas emissions, especially CO emission, due to the catalysis effect of Mo and Co. This research provides a novel approach to design high-performance flame-retardant coatings.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
FUEL
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2025
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IF 7.5
Pianpian Wu,Daozhang Liu,Junfang Guo,Gang Liu
Tunable electronic structure and unique physicochemical properties have made transition metal phosphides (TMP) promising electrocatalysts for hydrogen evolution reaction (HER). However, limited stability under electrocatalytic conditions leads to rapid degradation of electrocatalytic performance. Therefore, constructing high performance phosphide catalysts enabling stable electro-catalysis, especially under alkaline conditions, is still challenging and in great urgency. In this study, cobalt-molybdenum-based phosphides (CoMoP) were rationally designed and synthesized through a two-step approach based on hydrothermal treatment and subsequent gas–solid reaction for the alkaline HER. This method enables the incorporation of mixed-valent states of Mo and the formation of nanorod-shaped porous structure, creating catalysts with enhanced active sites, low hydrolysis energy barrier, and optimized electronic properties. Due to the combined effect of these characteristics, the as-prepared CoMoP exhibit excellent electrocatalytic performance in HER, including excellent catalytic activity and high stability. Typically, the optimized sample CoMoP-2 (with Mo-Co feeding ratio of 1:2) provided a quite low overpotential of 89 mV for achieving 10 mA cm −2 , and good catalytic stability with no decent degradation in catalytic performance after 48 h continuous electrolysis. This study offers a facile and low-cost strategy for developing non-noble bimetallic electrocatalysts for effective and sustainable hydrogen evolution.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Fulin Yang,Wei Qiao,Lice Yu,Shuli Wang,Ligang Feng
Hydrogen generation from methanol via methanol-assisted water splitting is a promising electrochemical energy conversion technology but still meets challenges in addressing the low intrinsic activity and easy poisoning problems of the conventional Pt catalysts. Herein, the support engineering modulated Pt by hierarchical MoSe 2 @mesoporous hollow carbon support was proposed to integrate some structural and catalytic advantages for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). Supporting engineering by layered MoSe 2 nanosheets confined in mesoporous hollow carbon spheres (MHCSs) is adopted to uniformly anchor Pt nanoparticles (Pt/MoSe 2 @MHCS), which effectively enhances the conductivity and prevents the layer-by-layer stacking of MoSe 2 ; Strong interaction and coupling ability between Pt and MoSe 2 and the resultant electronic structure regulation of the active centers could weaken the binding strength of CO* and H* intermediates during catalysis and strengthen the oxophilicity leading to improved MOR and HER kinetics. Specifically, Pt/MoSe 2 @MHCS shows a significantly improved MOR current density of 81.1 mA cm −2 , about 3.0 times that of the benchmark Pt/C catalyst. Meanwhile, it also exhibits the HER performance of 28 mV to achieve a kinetic current density of 10 mA cm −2 in methanol-contained electrolytes. When employed for overall methanol electrolysis, a lowered input voltage of 1.11 V can be obtained to drive the current density (10 mA cm −2 ) compared to that for water electrolysis (0.62 V vs. 1.73 V). The electrochemical properties of high activity, rapid catalytic kinetics, and good stability were also demonstrated due to the enhanced oxophilicity and high poisoning tolerance ability resulting from the MoSe 2 /carbon substrate-induced electron redistribution of Pt sites. This work reports a novel platform to address the catalysis challenges in hydrogen production via the methanol electrolysis technique.
研究领域:
材料科学
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电化学
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能源转换技术
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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2024
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IF 5.3
Xiaoming Yu,Meiling Zhang,Hua Chen
In this study, we developed a superhydrophobic coating that provides active protection against corrosion on magnesium alloys. Graphene oxide (GO) served as a nanocontainer, loaded with molybdate (an inorganic corrosion inhibitor) and dopamine (an organic corrosion inhibitor). The hydrophobic effect was amplified by the addition of octadecylamine. By uniformly dispersing this intelligent nanocontainer in an organic coating, the coating is endowed with the ability to actively protect against corrosion spread. The resulting superhydrophobic coating exhibits an outstanding hydrophobic effect, with a water contact angle (WCA) of 161.35 ± 2°. In addition, the coating showed exceptional stability in each of the four extreme test conditions, as well displayed excellent electrochemical properties. The corrosion rate of the superhydrophobic coating was determined statistically and computationally to be 9.12 × 10 −6 mm/year. At a frequency of 0.01 Hz, the impedance modulus (|Z|) and polarization resistance (R p ) were measured to be 2.24 × 10 8 Ω cm 2 and 6.07 × 10 8 Ω cm 2 , respectively. Following a 28-day immersion in a 3.5 wt% NaCl solution, |Z| f=0.01 Hz and R p both remained at 1.25 × 10 8 Ω cm 2 and 1.69 × 10 8 Ω cm 2 , respectively. The coating demonstrated robust, active protection capabilities. After a 12-h immersion in water, the wounded portion of the coating significantly lightened, and the electrochemical properties substantially recovered. This study offers novel insights and methodologies for addressing the corrosion issues of magnesium and its alloys. It emphasizes how the superhydrophobic coatings can in improve the durability and longevity of these materials.
研究领域:
材料科学
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腐蚀与防护
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DOI
高影响因子
CHEMOSPHERE
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2024
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IF 8.1
Shuting Shi,Chuanqin Zhou,Aiting Chen,Nana Tang,Kun Wan,Youwei Jiang,Jun Liu,Quanguo He,Li Cao
Antibiotics have emerged as a class of contaminants of concern globally, raising widespread worry and unease, primarily because of their inappropriately use and endless migration in food chains. Electrochemical ultrasensitive and selective determination of norfloxacin (NOR) using bismuth-based bimetallic salt bismuth molybdate (Bi 2 MoO 6 ) and carboxylated multi-walled carbon nanotube (MWCNTs-COOH) hybrid electrode as sensing platforms is presented hereby. The electrocatalytic ability of the electrodes was verified to be enhanced by the synergy effect of both Bi 2 MoO 6 and MWCNTs-COOH using cyclic voltammetry and electrochemical impedance spectroscopy. Linear scan voltammetry was applied to detect NOR. The oxidation peak current was linearly correlated with NOR concentration of 0.03–10 μM and the low limit detection of the optimized method was 6.7 nM (S/N = 3). In addition, it was verified that Bi 2 MoO 6 /MWCNTs-COOH/GCE probe had good stability, reproducibility, repeatability and selectivity. The spiked recovery method for NOR in milk and lake water samples showed recoveries of 94.8 – 96.9% and 90.2 – 98.3%, respectively, which can be used to determine NOR in real samples with high sensitivity. The preparation of Bi 2 MoO 6 /MWCNTs-COOH/GCE provides a new prototype for probing NOR detection at nanomolar concentration and safeguarding antibiotic contamination in environmental and food chains.
研究领域:
环境科学
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分析化学
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食品科学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Yudie Sun,Kehong Quan,Ruilai Zhang,Aobo Feng,Mingfu Ye,Kui Zhang
Methicillin-resistant Staphylococcus aureus (MRSA) is a ubiquitous foodborne pathogen capable of causing food poisoning and producing enterotoxins in foodstuffs, which ultimately results in various illnesses, such as vomiting, diarrhea, and pneumonia. In this study, we present a MoS 2 NF@AuNPs enhanced electrochemiluminescence (ECL) biosensor for MRSA detection based on a DNA branching tree structure formed via enzyme-free hybridization chain reaction (HCR) amplification. This approach integrates bacterial aptamers with multistage HCR amplification to achieve highly sensitive and specific target recognition. Furthermore, MoS 2 NF@AuNPs act as a synergistic catalyst for Ru(bpy) 3 2+ molecules, which in turn substantially enhances the signal readout of the biosensor. The biosensor exhibits a robust linear correlation for MRSA detection over a concentration range of 10 0 to 10 7 cfu/mL, with a detection limit of 1 cfu/mL. In addition, the biosensor demonstrates excellent selectivity and high sensitivity when applied to real samples such as water, juice, and milk.
研究领域:
微生物学
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生物传感技术
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食品科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Qiang Yao,Jing Guo,Fucheng Guan,Jia Li,Yi Xu,Xin Zhang,Zheng Li,Yihang Zhang,Shi Feng
In order to improve the dispersion of molybdenum disulfide (MoS 2 ) and enhance the performance of MoS 2 , two alginate-derived biomass carbon-MoS 2 (BC-MoS 2 ) composites: CMB/CMS, were prepared by introducing BC during the synthesis of MoS 2 by hydrothermal. The effects of different gels, times and temperatures of the synthesized BC-MoS 2 were investigated, and the adsorption capacity for methylene blue (MB), basic fuchsin (BF) and copper ions (Cu 2+ ) was tested. The results indicated that the vertical growth of MoS 2 on the BC surface could be realized when using xero-gel, while the BC and MoS 2 were mixed uniformly when using wet-gel. Compared with MoS 2 , the hydrophilicity and water dispersibility of BC-MoS 2 were greatly improved, and BC-MoS 2 had better adsorption capacity for MB/BF/Cu 2+ (99.61/86.83/60 mg/g). The adsorption mechanism exhibits that the adsorption force of BC-MoS 2 on MB/BF is mainly based on the electrostatic force, and the adsorption on Cu 2+ comes from the electrostatic force and the Lewis soft-soft interaction. This study dramatically enriches the application of transition metal chalcogenides and provides a meaningful reference for wastewater treatment.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）