SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Huanhuan Dong,Xiaoyu Ji,Zhao Li,Junxiang Guo,Shan Peng
Viscous oil spills (e.g., petroleum and diesel) in marine environments and domestic oily wastewater pose seriously ecological and public health risks owing to their high viscosity and poor fluidity, making the remediation a very urgent challenge. To address these issues, we designed an inherently hydrophobic MXene/hollow CuCo-MOF (H-CuCo-MOF)@PDMS sponge featuring an instantly photothermal response and a multiscale wrinkled structure. The confined effects of H-CuCo-MOF and MXene synergistically generate an efficient electron transport network, where interfacial charge transfer enhances carrier lifetime, thereby prolonging photothermal conversion efficiency. In Addition, the high specific surface area of H-CuCo-MOF and the layered structure of MXene increase confined adsorption sites while preventing MOF aggregation. Stress mismatch between flexible PDMS and rigid MXene form a highly wrinkled architecture, effectively mitigating MXene stacking. Under 1-sun irradiation, the sponge’s surface temperature quickly reaches ∼80 °C within 20 s, altering surface tension and inducing the Marangoni effect to accelerate oil absorption. Moreover, taking advantages of high match between the coated sponge and the viscous oil, the separation efficiencies are exceeding 95 % for diesel oil and rapeseed oil, and 82.7 % for crude oil. The material also proves superior durability, maintaining stable hydrophobicity after 150 friction cycles, exceptional mechanical recovery (99.2 % after 10 compressions), and notable salt resistance and antibacterial properties.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yue Liu,Zhaoyang Wang,Wentao Bi,Can Jin,David Da Yong Chen
A sustainable and environmentally benign approach was developed to valorize Phyllostachys edulis bamboo biomass into functional biochar (DESChar) via deep eutectic solvent (DES)-assisted solvothermal carbonization. Unlike previous reports that focus on DESs for biomass pretreatment, this study uniquely uses a carboxylic acid-based DES both as reaction medium and chemical activator in a one-pot synthesis of DESChar. The DES-induced reorganization of bamboo structure led to the formation of spherical carbon microspheres with high surface area and abundant functional groups. The optimized DESChar exhibited outstanding adsorption capacities of 850.14 mg/g for malachite green (MG) and 259.94 mg/g for rhodamine B (RB), surpassing many conventional adsorbents. Structural and compositional analyses confirmed its aromatic, and porous framework enriched with carboxyl and hydroxyl groups. Adsorption kinetics followed a pseudo-second-order model, and the thermodynamics indicated a spontaneous, and endothermic chemisorption process. Mechanistic insights supported by Zeta potential, XPS, and thermodynamic data revealed that electrostatic, hydrogen bonding, and π-π stacking interactions dominate the adsorption process. The DESChar also showed strong selectivity toward cationic dyes in mixed systems, high ion tolerance, and excellent reusability. An economic assessment further supported the feasibility of the preparation strategy. This study not only demonstrates a DES-enabled route to functional biochar from bamboo but also contributes to advancing sustainable separation technologies for wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Xuemei Qiu,Xu Yang,Que. Zhou,Nianben Zheng,Zhiqiang Sun
Preparing the V 3.5+ electrolytes by catalytic reduction of V 2 O 5 with formic acid is a straightforward and efficient process for vanadium flow batteries (VFBs). Nevertheless, converting vanadium ions in a strong acid environment depends on utilizing highly active and stable catalysts. Herein, a novel Pt-based catalyst supported by graphene oxide (GO) and hexadecyl trimethyl ammonium bromide (CTAB) (Pt/GO@CTAB) was developed for the catalytic reduction method. The introduction of CTAB into the catalyst enhanced the dispersion of GO, increased the degree of defects, and created more reduction sites for Pt, thereby improving the catalytic activity for formic acid oxidation. As a result, the reduction rate increased by 42.86 % compared to the Pt/C catalyst. Moreover, an economic analysis of the catalyst revealed that Pt/GO@CTAB could reduce costs by 49.25 %. Finally, charge-discharge experiments were conducted on the VFB single-cell with the prepared V 3.5+ electrolyte, which exhibited comparable Coulombic efficiency (CE) and energy efficiency (EE) to the other electrolytes, with CE and EE values of approximately 97 % and 87 %, respectively. These results suggest that Pt/GO@CTAB is a promising catalyst that not only reduces costs but also maintains electrolyte performance, offering a viable alternative to the traditional Pt/C catalyst for the efficient preparation of vanadium electrolytes.
✓ 已验证
产品关联
DOI
高影响因子
Biomass Conversion and Biorefinery
·
2025
·
IF 4.1
Yan Guilong,Kan Zexi,Ding Shijie,Yuan Xitong,Li Jianming,Wang Hao,Zhou Yuzhen,Wu Jianguo,Jin Ci
A novel lanthanum-modified biorefinery residue of wheat straw (La-BRWS) was synthesized, characterized, and applied for the removal of phosphate from aqueous solution. Characterization analyses confirmed the successful incorporation of lanthanum, which significantly enhanced the material’s adsorption performance. The results demonstrated that La-BRWS possessed a large specific surface area, a porous structure, and excellent stability across a wide initial pH range (1.01–10.83). Phosphate adsorption kinetics on La-BRWS were effectively described by both pseudo-first-order and pseudo-second-order models. The Langmuir isotherm model provided the best fit for the equilibrium data, indicating a maximum adsorption capacity of 55.74 mg P/g at 50 °C. The adsorption process was endothermic and spontaneous, reaching rapid equilibrium within 20 min, and demonstrated excellent stability in the presence of co-existing ions (Cl − , NO 3 − , HCO 3 − , and SO 4 2− ). Regeneration with 5 M NaOH retained over 99% of the adsorption capacity after five cycles. The phosphate adsorption mechanism involved ligand exchange, precipitation, and Lewis acid–base interaction. This study proposes La-BRWS as an economical and effective phosphate adsorbent derived from biorefinery residue of wheat straw, and provides new insights for reducing the cost of biorefinery.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Liang Yuan,Wang Kai,Liu Simeng,Shi Jian,Liu Fan,Morikawa Hideaki,Zhu Chunhong
Toluene (C 7 H 8 ) is a representative volatile organic compound (VOC) that poses a significant threat to the atmospheric environment and human health. Catalytic oxidation has shown demonstrated advantages in the field of air purification, but precious metal catalysts have significant limitations by their high cost and scarcity. This study used hydrothermal synthesis to prepare manganese dioxide nanowires with a diameter of approximately 100 nm. A multi-scale fiber membrane was constructed with mullite nanofibers, which can effectively remove PM 2.5 and toluene from the air. The filtration efficiency of the composite fiber membrane remaind above 99% at different air flow rates. It can achieve complete oxidation of toluene, and after five cycles of testing, the removal rate of toluene remains at 99.2%, demonstrating good catalytic performance. MnO 2 nanowire/mullite multi-scale fiber membrane has shown great potential for indoor air purifier filters.
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2025
·
IF 3.5
Yan Jiaqi,Chen Wenkai,Ni Wenjin,Li Lu,Fu Jinfeng,Yang Qian,Yang Zhiyong
N -cyclohexylcyclohexanimine (N-CCA), a by-product of cyclohexylamine (CHA) oxidation to cyclohexanone oxime (CHO), was used as the starting reactant for the efficient conversion to CHO under an oxygen atmosphere, utilizing the constructed surface hydroxyl-rich Ti-based catalysts. Of these, the 20% TiO 2 /Hβ catalyst exhibited unique catalytic activity and stability, achieving 45.9% N-CCA conversion and 82.1% CHO selectivity, with the content of high-boiling by-products not exceeding 1.0%. The superior catalytic performance, as evidenced by characterization results, stems primarily from: (i) the combination of TiO 2 and Hβ, which promotes the formation of a high specific surface area with fine TiO 2 nanoparticles and high-density Ti δ+ active sites, which facilitate the adsorption and activation of N-CCA; (ii) the construction of rich hydroxyl groups, which enhances the Brønsted acid sites, thereby improving the generation of active oxygen species; (iii) the intercrystalline embedding of TiO 2 and Hβ, which forms Ti–O–Si bonds, effectively inhibiting Ti leaching and ensuring excellent catalyst stability. The conversion of N-CCA, the main by-product of CHA oxidation, to the desired CHO using an efficient and robust 20% TiO 2 /Hβ catalyst represents an attractive pathway.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhaofen Xu,Lingfang Tang,Yuanyi Zhou,Gang Lu,Haojie Dong,Mingshan Zhu
Utilizing the immanent salt (Cl – ) in wastewater to generate reactive chlorine species (RCS) satisfies the future needs for sustainable, on-demand, and decentralized ammonia nitrogen (NH 4 + -N) removal. The microstructural evolution of bismuth oxychloride (BiOCl) photocatalyst under irradiation benefits for overcoming the competition between Cl – and H 2 O oxidation and achieving high N 2 selectivity. Herein, internal electric field (IEF) engineering by carbon doping is applied to promote photocatalytic RCS generation rate over BiOCl. The carbon dopant not only enhances the IEF intensity of BiOCl by a factor of 2.1 times for carrier dynamics promotion, but also improves Cl – oxidation against H 2 O oxidation. An RCS production rate of 0.23 mg/L min −1 is realized over carbon-doped BiOCl (C-BiOCl) through the accelerated interaction between lattice and environmental Cl – , which is twice that of the undoped BiOCl (0.11 mg/L min −1 ). The relation between IEF intensity and RCS generation rate over C-BiOCl manifests a correlation coefficient of 0.96. Effective NH 4 + -N degradation with N 2 selectivity of >99% is validated. The system is competent in dealing with saline NH 4 + -N wastewater with a wide range of NH 4 + -N (20∼200 mg N/L) and NaCl (6∼10 g/L) concentrations. In the treatment of realistic landfill leachate (884 mg N/L NH 4 + -N), C-BiOCl displays a photocatalytic NH 4 + -N removal efficiency of up to 95.6% while maintaining the NO 2 − -N (∼2 mg N/L) and NO 3 − -N (∼40 mg N/L) levels. This system provided an interesting and innovative idea for wastewater self-purification.
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Qian Liu,Yulin Li,Yuxin Qiu,Jin Zhang,Hongye Cheng,Zhen Song,Zhiwen Qi
The recovery of valuable metals in cathode materials from spent lithium-ion batteries (LIBs) is crucial for reducing environmental pollution and addressing resource scarcity. In this work, a systematic framework is presented to explore deep eutectic solvents (DESs) as leaching solvents for achieving green and efficient recovery of spent cathodes. Guided by empirical leaching mechanisms suggested in literature, the quantum chemical calculation of coordination ability and reducibility as well as the data-driven estimation of acidity and key physical properties are first integrated for the rational design of promising DESs. The leaching performance and kinetics of as-designed DESs are thoroughly investigated by leaching experiments with spent LiNi0.6Co0.2Mn0.2O2 cathode. The leaching mechanisms of valuable metals in the as-designed DES are deeply elucidated by combining experimental characterization and theoretical calculations. Valuable metals are precipitated from the DES leachate and the cycling performance of the DESs is thoroughly evaluated. Finally, the economic and environmental analysis of the DES-based recycling process is investigated and compared with benchmark processes. This work provides a high-efficiency strategy for valuable metal recovery from spent LIB cathodes, showcasing the mechanism-guided rational design of task-specific DESs.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Donglei Wei,Jingyi Fang,Jiuhui Bian,Xifeng Yang,Yushen Liu,Bo Ram Lee
Transition metal perovskite oxide is one of the most important functional materials for applications in light energy conversion due to the distinctive structures and characteristics. This work reports self-activated luminescence of Ba 3 WVO 8.5 , a hybrid hexagonal perovskite. Ba 3 WVO 8.5 acts as an indirect allowed transition, with a band gap energy of 3.2 eV. At 300 K, it exhibits a broad self-activated luminescence band peaking at 527 nm, with a decay lifetime of 0.09 μs. There are two distinct intrinsic centers, WO 6 and VO 6 , in the lattices that contribute to the self-activated luminescence. The photoluminescence (PL) and temperature-dependent spectra confirm the energy transfer process from WO 6 to VO 6 centers. The cation substitutions in Ba 3 WVO 8.5 can exert obvious effect on the luminescence efficiency. Especially, the substitution of Ba 2+ by Sr 2+ +Ca 2+ significantly enhances its self-activated luminescence. The maximum quantum efficiency (QE) in Ba 2.7 Sr 0.15 Ca 0.15 WVO 8.5 can reach up to 34 %. Moreover, Ba 3 WVO 8.5 exhibits scintillation characteristics under X-ray irradiation. Its emission efficiency is still significantly lower than that of the commercial Bi 4 Ge 3 O 12 scintillator, but Ba 3 WVO 8.5 shows advantages in QE under UV excitation and in fast decay lifetime. The experimental results may play a valuable role in the development of new luminescent materials and further understanding of the hybrid hexagonal perovskite oxides.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yongxing Shang,Jian Xiong,Shuo Chen,Junjie Zhu,Xiaodie Zhao,Bitao Xiong,Xing’ao Li
Acid Orange 7 (AO7) is a recalcitrant contaminant exhibiting persistent resistance to degradation in aquatic environments. Materials based on graphitic carbon nitride (
) demonstrate significant potential in removing pollutants like AO7 through synergistic interactions with oxidants, utilizing their exceptional catalytic properties and high surface area for adsorption. However, their effectiveness is limited by a relatively large band gap, which hinders their catalytic performance. This study reveals that Ni/O dual-doped
(NiOCN) effectively optimizes the structure and catalytic performance of
. Experimental results indicate that the NiOCN/peroxymonosulfate (PMS) system exhibits optimal AO7 degradation performance, achieving 92.3% degradation within 10 min while maintaining 80% efficiency in simulated aqueous matrices. Quenching experiments further identified superoxide anion radicals ( ⋅ O 2 − ) as the predominant reactive species governing AO7 degradation. Using density functional theory (DFT) calculations, we confirmed that Ni/O dual-doping narrows the band gap and boosts catalytic activity. Our findings mechanistically demonstrate that Ni/O dual-doping augments PMS activation performance by introducing impurity energy levels, increasing adsorption sites, and accelerating electron migration kinetics.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 9
·1-13
·
IF 5.3
Li Zehao,Jing Weixuan,Yang Zhenwei,Gao Weizhuo,Zhou Fan,Han Feng,Mao Qi,Zhao Libo,Yang Zhaochu,Jiang Zhuangde
A low-hysteresis coaxial pH sensor was presented for continuous soil monitoring. The electrolyte was irradiated with ultraviolet (UV) light for different durations, and then used for the electrodeposition of the IrO x film onto the front end of a stainless-steel wire, forming the working electrode. The reference membrane/AgCl/Ag paste (reference electrode) was coaxially integrated onto the insulated middle section of the working electrode, creating the pH sensor. It is found that the UV irradiation treatment generates sufficient hydroxyl radicals in the electrolyte, which increases the proportion of IrO 2 on the surface of the formed IrO x film and further enhances its reversible surface reactions with H + . The reference electrode is reliably integrated with the working electrode, which effectively miniaturizes the pH sensor for soil monitoring. With the UV irradiation duration optimized to be 2 days, the sensitivity and hysteresis voltage of the pH sensor were determined to be -74.8 mV/pH and 3 mV, respectively. The pH sensor maintained a stable potentiometric response even when bent to a 180° angle or subjected to 50 bending cycles. Moreover, the pH values of six soil samples were reliably determined, and the pH variations in a soil sample were monitored over an 11-day testing period. These results benefit accurate and continuous pH monitoring in agricultural and livestock applications. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Ke Wang,Wei Gao
Three silica-based porous materials-silica aerogel (SA), hollow silica microspheres (HS), and double-shell silica-titanium hollow microspheres (HST)-were synthesized via sol-gel and templating methods, and integrated into silicone resin to develop thermal insulation coatings. All three thermal insulation materials demonstrate excellent thermal insulation properties, with reflectance greater than 92 % in the near-infrared wavelength range. The composite coatings exhibit low thermal conductivity and high thermal stability. SA possesses the lowest thermal conductivity (0.0297 W/m·K). However, adding 5 wt% SA results in a reduction of mechanical properties, it's difficult to prepare coatings when exceeding 5 wt% due to excessive coating viscosity. Due to the double-shell structure and higher reflectance, HST exhibits superior thermal insulation performance than HS. When added 8 wt% HST, composite coating SHST4 demonstrates excellent thermal insulation performance (0.129 W/m·K) while maintaining exceptional mechanical properties. This work provides an effective strategy to design high-performance thermal insulation coatings for many fields.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）