JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Shuyao Yu,Bing Du,Amanjiao Baheiduola,Chao Geng,Jianguo Liu
Municipal solid waste incineration fly ash (MSWI-FA) has been strictly controlled as hazardous waste globally because it contains various heavy metals and dioxins. This study prepared a nanometallic Al/CaO (n-Al/CaO) dispersion mixture via ball-milling as a reductive stabilization reagent for the simultaneous immobilization of heavy metals and detoxification of POPs like substance in MSWI-FA. Under optimal conditions, Cu, Zn, Cd, Cr, Ni, and Pb had been significantly immobilized (over 99.9 %) and the leaching concentration of Zn, Cd, Cr, Ni, and Pb were below the detectable limit. Simultaneously, 82.43 % of HCB can be destructed into alkanes and amorphous carbon. The porous structure of the fly ash and alkaline surface of n-Al/CaO promoted the adsorption and cracking of HCB. The highly active n-Al/CaO interacted with water as the hydrogen donor to promote the reductive dechlorination process. Hydrocalumite was a new mineral formed from the adsorption and complexation of heavy metal. Therefore, n-Al/CaO can strengthen the control of heavy metals in the S/S treatment of MSWI-FA, effectively detoxify chlorinated organics, and reduce environmental health risks.
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PubMed
高影响因子
ACS Applied Energy Materials
·
2025
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IF 5.5
Zhu-Yu Li,Le-Ran Li,Tong Wu,Qi Niu,Bing Zhang,Ji Liu,Kai Li,Qiang Lu
Calcium-looping-based thermochemical energy storage (TCES) technology can be embraced for peak load shifting in renewable energy generation systems. However, the energy storage properties of Ca-based materials rapidly decay after multiple cycles. In this study, a synergistic strategy involving pyroligneous acid impregnation and Mn–Co–Al incorporation was developed to improve the pore structure, enhance the oxygen vacancy concentration, and boost antisintering performance of the calcium-based composites, thereby significantly improving their TCES properties and cyclic durability. The modified CaO-based composites were systematically analyzed using various characterization methods to evaluate their heat storage performance, sintering resistance mechanism, and physicochemical properties. Characterization results revealed that the codoped sample with Ca:Mn:Co:Al = 100:12:4:5 (PACa-Mn12Co4Al5) possessed a loose and porous surface with a measured specific surface area of 13.72 m2/g, providing channels for CO2 diffusion into the inner particles. Ca3CoMnO6 and Ca3Al2O6, acting as inert supports, were uniformly distributed in PACa-Mn12Co4Al5, effectively mitigating sintering. The addition of Mn–Co–Al strengthened the basicity and promoted oxygen vacancy formation in PACa-Mn12Co4Al5. The oxygen vacancies encouraged the formation of ion diffusion channels, reducing the O2– transport resistance across the surface and within the bulk of PACa-Mn12Co4Al5, thereby improving the reaction activity and conversion efficiency. PACa-Mn12Co4Al5 demonstrated excellent heat storage performance under calcination at 750 °C and carbonation at 850 °C. After 40 and 100 cycles, its energy storage density remained at 97.29% and 84.65% of the initial value (1212.79 kJ/kg), respectively. Moreover, the average radiation absorptance of PACa-Mn12Co4Al5 reached 59.85%, 5.26 times that of limestone-based CaO. Therefore, PACa-Mn12Co4Al5 is a promising heat storage material, providing guidance for the industrial application of Ca-based TCES materials.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Zhidong Wei,Jiawei Yan,Yuchen Zhang,Jiasheng Chi,Huoshuai Huang,Junying Liu,Jianli Mi,Linlin Ma,Wenjian Fang,Wenfeng Shangguan,Zhen Huang
Modulation of the built-in electric field was one of the effective strategies to enhance the separation of photogenerated carriers. Herein, corner-cut nano-cubic Al: SrTiO 3 was synthesized via the stoichiometric SrCl 2 molten salt regulation strategy. Notably, a rare phenomenon of stacking fault effect in SrTiO 3 , induced by Al 2 O 3 phase transition doping, was discovered. This phenomenon could serve as an effective approach for modulating the built-in electric field within Al:SrTiO 3 , and the photocarrier lifetime could be prolonged to exceed 2500 ps after investigated by the femtosecond ultrafast spectroscopy, which could be ascribed to the hole capture by Al 3+ through TiO 6 polarizability regulation. Consequently, compared to samples without stacking fault effect, the optimized Al: SrTiO 3 photocatalysts demonstrated an enhanced STH efficiency increasing from 0.15 % to 0.5 %. This work revealed the phenomenon of stacking fault effect in nano-photocatalysts and proposed insights into the mechanisms of the built-in electric field regulation through microstructure polarization.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 38
·e74780
·
IF 2.3
Yuan Bai,Pengfei Fan,Weiting Huang,Xinyu Gan
A reusable magnetic cellulase (CEL) immobilized composite, MF@CS-LDHs@CEL, was developed by integrating α-FeOOH–Fe 3 O 4 magnetic nanoparticles (MF), chitosan (CS), and zinc–aluminum layered double hydroxides (LDHs) with CEL for the removal of Congo red (CR) from aqueous media. The optimal CEL immobilization conditions were an initial enzyme concentration of 3 mg/mL, a glutaraldehyde concentration of 4%, a cross-linking time of 2 h, an immobilization pH of 5.0, and an immobilization temperature of 50°C. Under optimized operational conditions (50 mL of 100 mg/L CR solution, 50°C, pH 5.0, 300 min reaction time, and 30 mg of adsorbent), the experimental maximum adsorption capacity of MF@CS-LDHs@CEL for CR reached 140.64 mg/g. The material maintained an 87.66% CR removal efficiency even after eight consecutive reuse cycles. The adsorption data were best described by the Redlich–Peterson isotherm ( R 2 = 0.99591) and pseudo-second-order kinetic models ( R 2 > 0.999), suggesting heterogeneous adsorption involving strong adsorbate–surface interactions. The removal of CR was primarily associated with hydrogen bonding, electrostatic interactions, and anion-exchange processes acting in combination. In addition, MF@CS-LDHs@CEL exhibited favorable adsorption performance, convenient magnetic separation, and good reusability, demonstrating its potential as an adsorbent for treating dye-containing wastewater. Graphical A recyclable magnetic cellulase composite, MF@CS-LDHs@CEL, is developed for Congo red (CR) removal from wastewater. It reaches an adsorption capacity of 140.64 mg/g and retains 87.66% removal after eight reuse cycles. CR uptake is mainly associated with hydrogen bonding, electrostatic interactions, and anion exchange, while magnetic separation allows straightforward recovery and reuse.
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高影响因子
BIOMASS & BIOENERGY
·
2026
·
IF 7
Yuhao Shi,Weiping Tang,Fei Ge,Xiaohui Yang,Minghao Zhou
FJH prepared carbon-coated Co-Ni-Al LDH catalysts and suppressed metal sintering. • Co 1 Ni 2 Al-850 catalyst afforded 100% vanillin conversion and 94.3% MCH yield in isopropanol solvent. • Ni species activated isopropanol to produce active hydrogen, while oxophilic Co promoted the cleavage of C-O bonds. • The Co 1 Ni 2 Al-850 catalyst effectively converted various lignin model compounds under mild conditions. Hydrodeoxygenation (HDO) is a key process for upgrading lignin derived bio-oil to high-quality fuels and chemicals. In this study, Co x Ni y Al-T catalysts with varying Co/Ni molar ratios and calcination temperatures were fabricated through flash Joule heating assisted carbon coating, with layered double hydroxides (LDHs) adopted as precursors. These catalysts were used for the hydrodeoxygenation of vanillin to 4-methylcyclohexanol (MCH). Under the optimized reaction conditions (180 °C, 2.5 h, 1 MPa N 2 ) with isopropanol serving as both hydrogen donor and solvent, the Co 1 Ni 2 Al-850 catalyst achieved nearly 100% vanillin conversion and a 94.3% yield of MCH. Based on various characterization results, Co 1 Ni 2 Al-850 catalysts exhibited suitable specific surface area, pore structure and acid sites. The excellent performance of Co 1 Ni 2 Al-850 catalyst was also attributed to the Co-Ni synergistic effect: Ni species accelerated the activation and dissociation of isopropanol to supply sufficient active hydrogen species for HDO; Co species promoted removal of methoxy groups in MMP. In addition, the presence of Al enhanced the structural stability. Based on the product distribution and characterization results, the possible reaction mechanism of the catalytic system was proposed. This study provides a new way for the development of efficient non noble metal catalysts for the hydrodeoxygenation system of biomass derivatives.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Bofan An,Hui Ye,Xuefen Wang
As the global population of chronic kidney disease (CKD) patients continues to expand, high-performance adsorbents for uremic toxins have emerged as a critical solution to alleviate dialysis treatment challenges. In this work, a layered double hydroxide (Mg–Al LDH) was prepared via a facile hydrothermal approach and subsequently functionalized for adsorption of protein-bound toxins by organosilicon quaternary ammonium salt (Q-Mg–Al LDH). The synthesized Q-Mg–Al LDH was then incorporated into sodium alginate (SA) solution to achieve a three-dimensional Q-Mg–Al LDH/SA composite aerogel (SA-Q) by freeze-drying for easy maneuverability as adsorbents. Specifically, the organosilicon quaternary ammonium-grafted LDH (Q-Mg–Al LDH) offered both long alkyl chain and positively charged quaternary ammonium moieties, enabling synergistic adsorption through electrostatic and hydrophobic interactions, thereby exhibiting superior adsorption capacity (222.7 mg/g) for hippuric acid (HA, one typical protein-bound uremic toxin). The optimized SA-Q possessed outstanding adsorption capabilities (141.8 mg/g); more importantly, it could maintain a 95% removal rate even after 8 cycles, and also could selectively remove the diffused HA in the dialysate during hemodialysis, indicating its excellent operability and recyclability. This work demonstrated a promising strategy for constructing advanced adsorbents to eliminate uremic toxins from dialysate to facilitate the development and popularization of miniaturized hemodialysis equipment.
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高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Yingjue Chen,Yan Chu,Shiwei Fang,Xiaoqi Zhang,Jie Zheng,Wubin Du,Wengang Cui,Lingchao Zhang,Xin Zhang,Yaxiong Yang,Mingxia Gao,Hongge Pan
NaAlH4 suffers from high kinetic barriers, causing high dehydrogenation temperatures, sluggish kinetics, poor reversibility, and low direct synthesis efficiency. Herein, a metallic Al−Ti−Ce alloy ribbon (Ti:Ce = 1:1, total 6 wt %) with a refined Al matrix (∼405 nm) and uniformly dispersed nanoscale Ti2Al20Ce and Al3Ti phases (200−360 nm) was fabricated by arc melting and melt-spinning. Used directly as the Al source, this ribbon enabled successful synthesis of NaAlH4 by ball-milling with NaH under 50 bar H2 for 36 h. The resulting composite delivered a dehydrogenation capacity of 4.73 wt % from 107.4 to 182.1 °C and a capacity retention of 91.98% over 15 cycles. The Ti−Ce synergy refines Al grains and disperses catalytic phases while also improving the hydrogenation and dehydrogenation kinetics of NaAlH4 and suppressing Al agglomeration, collectively ensuring high reactivity and sustained reversibility of the system. This work presents an effective design strategy for an integrated precursor that combines a bimetallic catalyst and an Al source, offering an alternative approach for optimizing the synthesis and hydrogen storage performance of the NaAlH4 system.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Huan Lin,Bin Li,Guangqi Li,Shu Yin,Yong Li,Junhong Chen
Low-temperature Acheson synthesis achieves energy-efficient SiC production; • DFT and experiments reveal the multiscale mechanism of 6H-SiC evolution; • Al-induced electronic reconstruction governs surface energy and morphology evolution. To achieve the regulation of 6H-SiC crystal morphology at low-temperatures in the Acheson process, this study investigates the growth direction evolution of 6H-SiC by altering the surface energy differences between crystal planes through Al doping, using a combination of density functional theory (DFT) calculations and experimental methods. DFT calculation results reveal that Al doping exerts differentiated effects on the surface energy of various 6H-SiC crystal planes through the modulation of electron distribution and reconstruction of local chemical bonding environments, which further alters the relative plane stability and surface energy anisotropy. This mechanism provides theoretical support for morphology regulation of 6H-SiC via doping in the low-temperature Acheson process. Experimental results demonstrate that Al doping facilitates the thickening of 6H-SiC particles and induces gradient morphological evolution correlated with the <0001> direction, which is consistent with the variation of surface energy anisotropy predicted by DFT calculations. Download: Download high-res image (106KB) Download: Download full-size image
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hang Li,Muhammad Mubeen,Jingbao Wang,Salman Khalid,Jingmao Zhao,Baomin Fan,Yiqian Lv,Mohammad Tabish,Haiqing Liu
Zn-Al-Mg coated steel (ZM-steel) has emerged as a preferred material in automotive and infrastructure applications, yet its long-term durability remains challenged by localized corrosion in chloride-rich environments. Herein, a sustainable and scalable corrosion protection strategy based on the in-situ formation of layered double hydroxide (LDH) films intercalated with benzothiazole (BTZ) was reported. By exploiting the controlled corrosion of ZM-steel surface in BTZ-containing NaCl solution, compact LDH architectures spontaneously formed, incorporating BTZ molecules within their interlayers. The resulting hybrid coating integrated the physical barrier effect of LDH with the release of BTZ anions, enabling interfacial passivation and sustained corrosion inhibition. Comparative electrochemical tests revealed that BTZ-containing NaCl solution yielded markedly enhanced corrosion-resistance as compared to NaCl solution or bare BTZ solution, with charge transfer resistance increasing from 9.44 × 10 2 to 9.13 × 10 4 Ω·cm 2 . Moreover, epoxy-overcoating effectively suppressed filiform corrosion (FFC) of ZM-steel substrate for over 35 days. Unlike conventional hydrothermal or carbonate-assisted routes for LDH fabrication, this precursor-free strategy proceeds under ambient conditions without additional reagents, underscoring its simplicity, efficiency, and scalability. These findings demonstrate that the moderate corrosion is beneficial to the formation of LDH on ZM-steel surface.
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高影响因子
Journal of Energetic Materials
·
2026
·
IF 1.8
Xiwei Xing,Shaohua Jin,Kun Chen,Junfeng Wang,Feng Qing Shang,Na Wang
This study investigates the influence of aluminum powder content on the metal-driving capability and underwater explosion energy of HMX/RDX-based aluminized explosives. Through the preparation of polymer-bonded explosives (PBX) with aluminum content ranging from 0 to 15%, we conducted explosive-driven metal plate test and established JWL-Miller equation of state model incorporating aluminum secondary reactions for underwater explosion simulations using LS-DYNA. Experimental results demonstrated that increasing aluminum content in aluminized explosives resulted in a gradual decline in metal-driving capability, with an 8% reduction observed at 15% aluminum content. Underwater explosion simulations revealed that where the aluminum–oxygen ratio reached 0.15, the shock wave energy achieved 1.846 MJ/kg. Bubble energy showed positive correlation with aluminum content, when the 15% aluminum formulation exhibited prolonged bubble pulsation period (249.6 ms) and expanded bubble radius (107.4 cm). The research validates the effectiveness of the JWL-Miller equation in modeling non-ideal detonation characteristics of aluminized explosives, the impact of aluminum powder on explosive performance is not only reflected in its heat value but also in the timing of energy release. These findings provide critical theoretical guidance for the design of high-energy explosive systems requiring optimized performance.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Ying Zhang,Ruohan Li,Wenying Sun,Wei Mao,Yibing Li,Lixun Zhang,Yuntao Guan
The pervasive contamination of tetrabromobisphenol A (TBBPA) presents a critical environmental challenge due to its persistence and resistance to conventional degradation. Although sulfidized nanoscale zero-valent iron (S-nZVI) represents a promising remediation avenue, its efficacy is severely constrained by particle agglomeration and insufficient mineralization capabilities. Here, we report a self-dissociation-assembly strategy to engineer a robust S-nZVI composite supported on Mg Al layered double oxides (S-nZVI@LDO) for the substantial removal of TBBPA. By modulating the precursor synthesis pathways, we demonstrate that the hydrothermal-derived LDO support (α-phase) creates a unique nanosheet architecture that facilitates superior dispersion of reactive Fe/S species compared to chemically precipitated counterparts. The optimized S-nZVI@LDO α composite achieves >95% TBBPA removal efficiency, with a debromination efficiency of 71% and a mineralization rate of 51%, significantly outperforming traditional composites. Mechanistic investigations reveal a synergistic pathway involving rapid electrostatic adsorption, reductive debromination driven by surface-bound Fe 0 , and oxidative mineralization via in-situ generated radicals. Furthermore, the catalyst exhibits improved stability and reusability over multiple cycles. This work elucidates the critical role of precursor structural evolution in catalyst design and provides a scalable, high-efficiency solution for the remediation of halogenated organic pollutants.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125480
·
IF 7.5
Yaxin Wang,Xiaosong Zhang,Yue Huang,Chunping Li,Jiajia An,Daquan Zhang
Hierarchical porous carbon is derived from in situ Al-MOF growth on lignin nanofibers. • Integrated nanofiber networks and Al-containing interfaces promote fluoride electrosorption. • High capacity of 27.48 mg·g −1 and separation factor of 90.7% at 1.2 V. • Superior durability with 93.46% capacitance retention after 5000 cycles and 68.1% adsorption capacity after 20 regeneration cycles. Fluoride contamination has become an increasing environmental concern because of its adverse effects on aquatic ecosystems and human health. Capacitive deionization (CDI) offers an effective approach for fluoride removal; however, the development of electrode materials with efficient ion transport, stable interfacial structures, and high fluoride affinity remains challenging. Herein, a bio-derived Al-containing porous carbon electrode (AMCNF) is fabricated by in situ growth of Al-MOF on lignin nanofibers, followed by carbonization. The optimized AMCNF-4 electrode features an interconnected porous framework with uniformly distributed Al-containing sites, facilitating ion transport and providing abundant fluoride adsorption sites. AMCNF-4 achieves a fluoride electrosorption capacity of 27.48 mg·g −1 with 90.7% removal efficiency, reducing fluoride concentration from 10 to 0.97 mg·L −1 . Moreover, it retains 68.1% of its initial electrosorption capacity after 20 regeneration cycles, demonstrating acceptable cycling stability. The improved electrosorption performance is attributed to the synergistic effect of the lignin-derived porous carbon framework and exposed Al sites, which facilitate ion transport and fluoride adsorption through electrostatic attraction and coordination interactions. This work provides a sustainable strategy for designing MOF-derived bio-carbon hybrid electrodes with tailored interfacial chemistry for efficient capacitive defluorination. Download: Download high-res image (305KB) Download: Download full-size image
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