SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Bingbing Liu,Suying Dong,Peiying Li,Shengpeng Su,Wenjuan Wang,Shuzhen Yang,Yanfang Huang,Hu Sun,Guihong Han
Indium (In) is a typical critical metal, and the recycling of waste In-Tin oxide (ITO) target can alleviate the In resource supply scarcity. The dismantling and preprocessing of waste ITO targets inevitably introduce metallic impurities, posing significant challenges for In recovery, particularly the separation of In from Sn and the removal of other impurities. This study developed an integrated hydrometallurgical process to prepare high-purity nano-In 2 O 3 from high-impurity waste ITO, highlighting on the leaching and separation mechanisms of In, Sn, Al, and Mo. The process consists of HCl leaching for Mo separation, selective sulfide precipitation for In/Sn separation, TOA/TBP synergistic extraction for In/Al separation, and calcination for nano-In 2 O 3 preparation. Under optimal conditions, HCl leaching extracted over 94% of In, Sn, and Al while selectively suppressing Mo dissolution to below 13%. The HCl leaching, sulfide precipitation, and solvent extraction mechanisms are also discussed in this study. The final In 2 O 3 product was 99.98% pure, with about 25 nm average particle size and 77.8% overall In recovery. This work provides an efficient route for high-purity nano-In 2 O 3 production from high-impurity wastes.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
·
IF 4.8
Jie Hu,Hui Chen,Ruibin He,Pran Gopal Karmaker,Xiupei Yang,Fenglin Tang
Rapid and sensitive detection of picric acid (PA), a highly toxic and water-mobile nitroaromatic pollutant, is essential for environmental safety and public health protection. Herein, we fabricate a dual-emission ratiometric fluorescent probe by immobilizing high-load red-emitting carbon dots (R-CDs) onto NH₂-functionalized MIL-53(Al), forming an R-CDs/NH 2 -MIL-53(Al) composite for selective aqueous-phase PA sensing. R-CDs were hydrothermally synthesized with citric acid and neutral red as co-precursors. The loading efficiency was maximized by systematically optimizing precursor molar ratios and dilution conditions. The composite exhibits distinct selective fluorescence quenching in the presence of PA. Mechanistic characterizations, including fluorescence lifetime decay measurements and spectral overlap analysis, verify that the fluorescence quenching originates from two synergistic quenching pathways, namely competitive light absorption and fluorescence resonance energy transfer (FRET), rather than nonspecific physical interactions. This ratiometric sensing platform achieves a wide linear detection range of 0.1–70 μM and an ultralow limit of detection (LOD) of 32.9 nM. Spike-and-recovery assays using real environmental water samples (tap water, commercial bottled mineral water, and Jialing River surface water) produced recoveries of 99.7%–105.1%, with relative standard deviations (RSD) below 5.86% ( n = 3). Furthermore, a smartphone-enabled visual quantitative method based on RGB color channel analysis was constructed, enabling portable on-site detection without large-scale laboratory instrumentation.
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PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 5.2
Rawiyah Alkahtani,Ahmad Iqbal,M.S. Al-Buriahi,Muhammad Ali Hamza Shahbaz,Amir Muhammad Afzal,Nora Mobark Farhan,Sohail Mumtaz,Abhinav Kumar
A MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO was successfully synthesized through hydrothermal and modified Hummers' methods. • The integration of porous MIL-53(Al) and conductive rGO enhanced charge transport and electroactive site accessibility. • The MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO electrode delivered a high specific capacity of 1189.23C g −1 . • The hybrid SC achieved an energy density of 45 Wh kg −1 and a power density of 2773 W kg −1 . • The ternary electrode showed a low overpotential of 46 mV and a Tafel slope of 49 mV dec −1 . The rising requirement of sustainable and multifunctional electrodes for energy storage and production has stimulated significant interest in advanced electrode architectures. In this study, a MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO composite was fabricated by means of combined hydrothermal and modified Hummers approach. The composite was rationally designed by integrating the MIL-53(Al), the favorable ionic transport characteristics of NASICON-type KTi 2 (PO 4 ) 3 , and the highly conductive network of rGO, there by promoting efficient charge and ion transport. Electrochemical evaluation in a three-electrode cell demonstrated a high specific capacity of 1189.23C g −1 . When assembled into a two-electrode supercapacitor device, the material delivered an energy density of 45 Wh kg −1 at a power density of 2773 W kg −1 . The device also maintained 92% of its initial capacity with a Coulombic efficiency of 97% after 10,000 consecutive charge–discharge cycles, indicating strong electrochemical durability. In addition to its energy storage performance, the MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO electrode demonstrated promising catalytic activity for the hydrogen evolution reaction, requiring only 46 mV overpotential to achieve the targeted current density and exhibiting a Tafel slope of 49 mV dec −1 . These results highlight the synergistic contribution of the MOF, NASICON phosphate, and rGO components and establish MIL-53(Al)@KTi 2 (PO 4 ) 3 @rGO as a promising multifunctional platform for advanced supercapacitor systems and electrocatalytic hydrogen production.
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Journal of Cleaner Production
·
2026
·
IF 10.7
Yu Xiong,Lizhong Duan,Huihu Wang,Shenghao Jiang,Chenhuinan Wei,Xing Xiang,Yun Zhao,Qianyu Wang
Non-woven fabric-encapsulated Al@MgH 2 blocks achieve controlled hydrolysis. • Non-woven fabric regulates water mass transfer and restricts byproduct expansion. • The sequential reactor produces hydrogen at a rate of 0.84 mL s −1 for 5177 s. • This work provides a safe and scalable material-to-system solution for H 2 supply. Active Al-based composite hydrolysis for hydrogen production holds broad application prospects in proton exchange membrane fuel cells (PEMFCs). However, key challenges such as controllability of hydrogen production, byproduct recovery, and hydrogen purity still need to be addressed. This study tackles these issues by designing a non-woven fabric-encapsulated hydrogen production unit and two hydrolysis reactors. This unit consists of a non-woven fabric envelope and an internal Al@30 % MgH 2 block. The regular pore structure of the non-woven fabric regulates water mass transfer and confines byproducts. This leads to effective control of hydrogen production, enhanced solution utilization, and one-step byproduct recovery. The parallel and sequential hydrogen production reactors were designed according to the hydrolysis characteristics of the encapsulated unit. The flow paths of the reaction solution were controlled accordingly. Under low solution flow rate conditions, the parallel reactor achieved a stable hydrogen generation rate (sHGR) of 1.36 mL s −1 over 3573 s. The measured total hydrogen generation was 4579 mL. In contrast, the sequential reactor maintained a sHGR of 0.84 mL s −1 over 5177 s. The measured total hydrogen generation was 4448 mL. Purity tests confirmed that the hydrogen purity exceeded 99.2 %. This study combines physical encapsulation, solution injection strategy, and reactor design. This integrated approach overcomes the explosive reaction of active powders, achieves tunable hydrolysis kinetics, and provides a practical pathway from laboratory to application. Download: Download high-res image (509KB) Download: Download full-size image
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2026
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IF 4.1
Liu Jianhui,Han Zhongxuan,Yang Zhanjun,Zhao Shuna,Li Mi,Xu Qiang
Nanocomposite thermite materials show great application potential in high-energy-consuming applications. However, significant challenges remain in precisely controlling their nanoscale microstructure and synergistically optimizing their combustion performance. Building upon the high oxidative potential of metal fluorides, using electrostatic spray technology, composite thermite particles were prepared with metal fluoride (CuF 2 ) and metal oxide (CuO) as oxidizers and polyvinylidene fluoride (PVDF) as a binder. Comparative samples were prepared by physical mixing. With the help of transmission electron microscope (TEM), scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), X-ray diffractometer (XRD), simultaneous thermogravimetry–differential scanning calorimeter (TG-DSC), and combustion performance test system, the microstructure, thermal reaction kinetic traits, combustion performance parameters, energy release law, as well as the morphological traits and component structure of combustion products of the prepared composite materials were systematically characterized and analyzed. The research results show that, compared with physically mixed samples, the composite materials prepared by electrostatic spray form submicron-scale (nano-aluminum powder) and micron-scale structures (micron-aluminum powder) with uniformly dispersed reactants in a nearly spherical shape. This structure enhances interfacial contact, suppresses nanoparticle agglomeration, and promotes more efficient energy release and combustion heat utilization. These samples exhibit larger flame height and area, higher combustion temperature and produce condensed-phase products with a fragmented, porous morphology and fewer metallic residues, indicating more complete reactions. Notably, CuF 2 -containing thermites demonstrate significantly higher combustion intensity than conventional thermite formulations. In conclusion, developing high-performance fluorine-containing thermite materials holds considerable academic and practical value for advancing thermite technology.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Mengting Li,Yixin Luo,Xing Wang,Jun Ding,Chao Yu,Zhenglong Liu,Chengji Deng
To address the diminished corrosion resistance of low carbon Al 2 O 3 –C refractories resulting from reduced carbon content, this study incorporated MgSiN 2 prepared by reconstructing high-silicon magnesite mineral phases into Al 2 O 3 –C refractories, and prepared samples at 1450 °C in an N 2 atmosphere. The influence of MgSiN 2 addition level on the phase composition, microstructure, mechanical properties, and corrosion resistance of the material was comprehensively explored. The findings demonstrated that MgSiN 2 in-situ generated flake Mg-Sialon and granular MgAl 2 O 4 ceramic phases, forming a three-dimensional interwoven folded network structure within the matrix, significantly boosting the aggregate-matrix interfacial bonding. When the content of MgSiN 2 was 3 wt%, the porosity of the material was the lowest, and the cold modulus of rupture and cold crushing strength were the best due to the synergistic effect of the generated ceramic phases. With the increase of MgSiN 2 content, the corrosion index decreased from 79.4% to 59.1%, and the corrosion resistance of the material gradually improved.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huali Zhu,Jialong Ying,Yiying Wang,Ziyi Huang,Sunjing Yan,Yi Zhong,Qiulin He,Penghui Cao,Chuanchang Li,Zhaoyong Chen
Ultra-high‑nickel layered oxide cathode materials are considered key candidates for next generation high-energy-density lithium-ion batteries due to their remarkable specific discharge capacity. However, its extremely high nickel content results in severe structural degradation and interfacial side reactions during cycling, thus restricting its practical application. This work proposes a novel bulk-surface Al/Ti continuous modification strategy. Through this strategy, Al and Ti are co-doped into the bulk phase of NCM955, while a fast-ion-conducting solid electrolyte, Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), is coated on the surface. The modified NCM955 delivers a high reversible capacity of 223.09 mAh/g at 0.1C (2.7–4.3 V) with excellent initial coulombic efficiency. After 100 cycles at 1C, the capacity retention and remaining capacity reach 90.18% and 183.44 mAh/g, and the capacity retention after 100 cycles in a full cell is 93.29%. Even after 100 cycles at a high rate of 10C, it retains 97.3% of its capacity. Bulk Al/Ti doping strengthens the transition metal‑oxygen bond energy, effectively suppressing lattice oxygen loss and inhibiting Ni 2+ migration. As a result, it reduces cation mixing and prevents structural deterioration during cycling. Simultaneously, the surface LATP coating enhances interfacial Li + diffusion kinetics, serves as a physical barrier against side reactions with air and electrolyte, and helps compensate for active lithium loss during cycling. This work demonstrates that the bulk-surface Al/Ti continuous modification strategy, achieved through synergistic Al/Ti co-doping and LATP coating, offers an effective approach to enhance the structural stability and electrochemical performance of ultra-high‑nickel cathode materials.
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FirePhysChem
·
2026
·
IF 5.1
Wei Liu,Wenqi Yang,Zhenye Ma
The molecular bridge-mediated discontinuous loading strategy preserves active aluminum. • 5 wt% composite drops AP decomposition peak by 116.9°C and boosts heat release by 75.8%. • Cu 2+ /Cu + redox, ligand exotherm, and hierarchical loading synergize AP kinetics. • Interface engineering balances catalytic activity and reactivity. The dense native Al 2 O 3 layer on the surface of aluminum powder hinders interfacial contact with the decomposition products of ammonium perchlorate (AP), thereby restricting the energy release efficiency of Al/AP systems. To address the issue that conventional MOF coating strategies often achieve catalytic loading at the expense of active aluminum content, this work proposes an organosilane molecular-bridge-mediated surface-loading strategy: An amino-terminated self-assembled functional layer is fabricated on aluminum powder with 3-aminopropyltriethoxysilane (APTES). Aluminum particles are discretely anchored onto energetic MOF crystal surfaces through hydrogen bonding between amino groups and Cu-ATRZ ligands, as well as weak coordination with unsaturated Cu sites, yielding surface-loaded Cu-ATRZ@Al/APTES composite particles. This strategy avoids excessive shielding of active aluminum by a continuous coating layer, preserving an active aluminum content of 86.2% while achieving intimate particle-scale contact between catalytic sites and the fuel phase. Catalytic tests on AP thermal decomposition demonstrate that with only 5 wt.% addition of the composite particles, the peak temperature of AP high-temperature decomposition dropped significantly from 436.0°C to 319.1°C, a decrease of 116.9°C, whilst the exothermic heat of the system increased from 550.7 J∙g −1 to 968.2 J∙g −1 . Non-isothermal kinetic analysis reveals that the apparent activation energy of the composite system decreases from 196.7 kJ·mol −1 for pure AP to 156.5 kJ·mol −1 , and the catalytic effect is markedly superior to that of a physically mixed system. Mechanistic analysis indicates that the catalytic enhancement of this composite architecture stems from a triple synergistic effect: (i) electron transfer pathways enabled by the reversible Cu 2+ /Cu + valence interconversion, (ii) localized thermal feedback from the exothermic decomposition of the energetic ligand framework, and (iii) a shortened mass-transport distance for oxidizing species diffusing toward the fuel phase resulting from the surface-loaded structure. This work provides an interfacial engineering concept for energetic MOF/metal fuel composite systems that balances catalytic activity with fuel reactivity. Download: Download high-res image (191KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yiqiong Yang,Yubin Zhang,Juan Han,Shujian Cai,Lun Xiao,Kaiquan Li,Xiaodong Zhang
Although several strategies were developed to activate peroxydisulfate (PDS) through layered double hydroxides (LDHs) for the degradation of organic contaminants, effectively utilizing the structure of LDHs to improve active sites and electron transfer efficiency remained a challenge. The research prepared Ni-Zn-Al LDH-0.1-PDS composite materials through ion exchange. After the PDS intercalated, the efficiency of degradation was significantly improved. The material showed optimal performance at Ni/Zn = 0.1, under the conditions of 1 g/L dosage and 10 mg/L ciprofloxacin (CIP), the degradation rate reached 89.86 % within 120 min. The quenching experiment demonstrated that the reaction was dominated by non-radical pathways represented by e − (80.53 %), h + (70.47 %), and 1 O 2 (58.70 %) and assisted by free radicals denoted as O 2 − (27.84 %). The DFT calculation revealed that the O O bond length increases while the bond energy diminishes upon the incorporation of S 2 O 8 2− into the LDH interlayer, illustrating that PDS existed in a metastable state within the LDH interlayer, where the O O bond exhibited heightened reactivity, facilitating electron acquisition and subsequent cleavage due to the interlayer confinement effect of LDH on anions. This research offered novel insights on altering the composition and structure of LDHs to promote non-radical activation of PDS.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Ruipeng Huang,Yumeng Wang,Yuze Zhou,Jiaying Lei,Qian Feng,Tengling Ye,Zhigang Liu,Dongyan Tang
In this paper, reinforced double interfacial constructions were fabricated by in situ growing appropriate coarse surfaces of layered double hydroxide (LDH) layers in mostly verticals orientation from Al alloy substrate, and then by depositing organic coatings of fluororesin through electrostatic spraying with LDH nanosheets that in mostly horizontal orientation onto LDH layers. The double interface structures consisting of coatings/LDH intermediate layers/alloy substrate realized the remarkable improvement of adhesion retention through the in-situ hydrothermal growth mechanism of LDH layers and the formation of mechanical interlocking and chemical bonding (C-O-Mg). In the adhesion strength tests, it was observed that the stripping areas of anti-corrosion coatings on the single interfacial structure of coatings/alloy substrate reached 16 % after the scratching, and then increased to 40 % after the tape peeling. However, no stripping occurred on the anti-corrosion coatings on the double interfacial structure. Moreover, the “labyrinth effect” produced by LDH nanosheets covered in horizon orientations could delay the invasion of water molecules (corrosive medium) more effectively than that of nanoparticles that in random distribution. Therefore, compared with that of the nanoparticles/fluororesin coating (2.814 × 10 5 Ω·cm 2 ), the |Z| 0.1Hz of the nanosheets/fluororesin coating increased by an order of magnitude, reaching a value of 1.020 × 10 6 Ω·cm 2 . After five friction cycles, the nanosheets/fluororesin coating maintained a larger water contact angle (117.20°) than the nanoparticles/fluororesin coating (108.49°), which indicated its superior mechanical stability. The works gave possible strategy enhance interfacial adhesion and permeability resistance of anti-corrosion coatings and enlarge applicable fields for both active metals and light alloys.
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JOURNAL OF POROUS MATERIALS
·
2023
·Vol. 30
·期 4
·1311-1318
·
IF 2.6
Li Haojie,Hou Xiaozhe,Zhang Ling,Wei Ying,Liang Yan,Qiao Junjun,Su Haohao,Gao Xibing,Jia Jingbo,Zhang Runduo
Extra-large-pore aluminogermanosilicate zeolite IRR with interconnected 18 × 12 × 12-ring channels was prepared within a wide range of Si/Ge and Al/(Si+Ge) ratio by using a new simple and commercial alkyl-immidazolium as template. The physicochemical properties of IRR zeolite were further characterized by the combination of several techniques, including XRD, SEM, NMR, TGA, ICP, N 2 physisorption, NH 3 -TPD etc. The results revealed that aluminum could be mostly incorporated in the framework with an obviously higher content as a result of the relatively smaller organic template used in this approach. The detemplated IRR by calcination at 550 °C in air presented excellent microporosity with the presence of 18-ring extra-large-pore opening, and considerable amount of acid sites with strong acidity. Finally, for the first time the catalytic performance of IRR zeolite, in comparison with large-pore Beta (12 × 12 × 12-ring) and extra-large-pore NUD-1 (18 × 12 × 12-ring) zeolites, were evaluated for acetalization reaction of aldehydes with triethyl ortoformate. The results showed that the catalytic activity of these three zeolites for aldehydes with different molecular size, that is heptanal and diphenylacetaldehyde, were in diametrically opposite order. IRR exhibited the highest catalytic conversion on bulky substrate diphenylacetaldehyde because its much more open channel system better facilitated the diffusion of reactants into the structure interior, where active acidic sites were located.
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Plants-Basel
·
2026
·Vol. 15
·期 11
·1694
·
IF 4.7
Hui Yang,Rong-Rong Xie,Tian-Tian Xia,Liang-Yuan Tong,Ti Wu,Xin Ye,Zeng-Rong Huang,Lin-Tong Yang,Li-Song Chen
No data to date are available on the underlying mechanisms by which coumarin (COU) alleviates plant aluminum (Al) toxicity.Citrus grandis(L.) Osbeck seedlings were submitted to 0 (Al0) or 1.2 (Al1.2 or Al3+toxicity) mM AlCl3·6H2O and 0 (COU0) or 50 (COU50) μM COU for 18 weeks. The results demonstrated that COU50 attenuated Al1.2-induced decreases of seedling growth, chlorophyll (Chl) level, and CO2assimilation (ACO2) and impairment of the photosynthetic electron transport chain (PETC). Further analysis suggested that reduced tissue Al concentration and enhanced capability to maintain nutrient and redox homeostasis played a role in COU-mediated amelioration of seedling growth inhibition, leaf Chl and ACO2decline, and PETC impairment. Notably, seedlings treated with COU0 showed some adaptive responses to Al1.2. For example, Al1.2 decreased the biosynthesis and accumulation of proteins and amino acids to meet the increased need for energy; increased the diphenylpicrylhydrazyl (DPPH) scavenging activity and phenolic compound accumulation to meet the elevated demand for reactive oxygen species (ROS) and Al detoxification; and increased the accumulation of soluble sugars (glucose, fructose, and sucrose) to meet the augmented demand for ROS scavenging and energy. To conclude, the research revealed some mechanisms for COU-mediated amelioration of plant Al3+toxicity.
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高影响因子
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