CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hong Jia,Mengyang Wang,Mengyao Feng,Guangzhi Li,Longhua Li,Yu Liu
Constructing heterostructures with nanotube arrays not only provides rich ion electron pathways to promote rapid Faraday reactions, but also enhances interfacial electron transfer, supplying larger capacitance and rapid energy storage. Herein, NiCo-layered double hydroxide (LDH)/NiCo 2 S 4 nanotube arrays decorated with black phosphorus quantum dots (BPQD) is prepared through solvothermal method and electrostatic adsorption. In the unique structure, tubular structure of NiCo-LDH/NiCo 2 S 4 /BPQD nanoarrays on carbon cloth can expose sufficient redox reaction active sites and multiple ion diffusion channels to promote rapid faradic reactions. Density functional theory (DFT) theoretical calculations further confirm the enhancement of conductivity and OH – adsorption in ternary composite materials. The as-obtained NiCo-LDH/NiCo 2 S 4 /BPQD achieves an ultra-high capacitance of 2938.2F g −1 at 1.0 A g −1 . Finally, an asymmetric supercapacitor consists of activated carbon and NiCo-LDH/NiCo 2 S 4 /BPQD exhibits a satisfactory energy density of 133.7 Wh kg −1 at 800 W kg −1 . In addition, after 10,000 repetitions of charging/discharging, the capacitance still remains 76.5 %. Above results suggest that NiCo-LDH/NiCo 2 S 4 /BPQD electrode may facilitate the further development of hierarchical array structure electrodes in the energy storage field.
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2025
·
IF 6.6
Yue Wang,Han Qin,Xiangming Wang,Feng Yan,Yang Zhao,Xianbo Yu
Graphical A hierarchical heterostructure consisting of amorphous FeNi(OH) X nanosheets electrodeposited on crystalline Ni 3 S 2 scaffolds with abundant catalytic active sites and superior electronic conductivity is reported to enhance its catalytic activity and long-term stability for overall water splitting. The advancement of inexpensive and productive bifunctional electrocatalysts for overall water splitting is essential for achieving hydrogen energy production. Herein, a hierarchical heterostructure catalyst composed of amorphous FeNi(OH) X nanosheets supported on a crystalline Ni 3 S 2 scaffold, which is anchored to nickel foam through a combined hydrothermal-electrodeposition strategy, is reported. The crystalline Ni 3 S 2 framework exhibits metal-like electrical conductivity and optimized hydrogen adsorption kinetics, while the amorphous FeNi(OH) X overlayer offers abundant adaptive active sites that enhance oxygen evolution reaction (OER) activity. The interfacial charge redistribution decreases the activation energy required for water splitting and accelerates the proton-coupled electron transfer process. Electrochemical tests demonstrate that the catalyst achieves performance at a current density of 10 mA cm −2 , with hydrogen evolution reaction (HER) and OER overpotentials as low as 78 and 183 mV, respectively. In addition, an alkaline electrolyzer assembled with this catalyst serving as both cathode and anode can sustain a current density of 10 mA cm −2 with only 1.51 V and keep a long-term stability exceeding 100 h, surpassing the performance of commercial Pt/C||IrO 2 systems. This study provides a design paradigm that integrates conductive crystalline frameworks with amorphous layers, addressing the tradeoff between conductivity and catalytic multifunctionality in nonprecious metal electrocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Haoran Jiang,Yong Hu,Wu Xu,Ziwen Dong,Song Kong
Cellulose-based paper, widely used in cultural heritage preservation and art, suffers from inherent flammability. Conventional phosphorus-based flame retardants, derived from depleting phosphate ores, necessitate sustainable alternatives. This study introduces an innovative layer-by-layer assembly strategy to fabricate biomass-derived MH-P@Mn and MH-P@Ni core-shell flame retardants. Phytic acid, a biogenic phosphorus source, chelates metal ions (Mn 2+ /Ni 2+ ) to form stable coatings on magnesium hydroxide. When applied to cellulose paper, these materials exhibit superior flame-retardant performance compared to commercial phosphorus-based counterparts, particularly at medium-to-high loadings. Mechanistically, they enhance inert gas emission during pyrolysis, delaying thermal degradation. The mild, rapid synthesis enables development of eco-friendly, multifunctional cellulose paper with enhanced fire resistance and sustainable phosphorus utilization, promising diverse applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Feitong Chen,Yulin Fan,Zhuohan Lin,Zhixian Li,Xueqing Qiu,Hongming Lou,Yuxia Pang
This study presents a pH-switchable Fenton-like system based on sulfur-doped FeP synthesized via a confined gas–solid strategy, where ·OH dominates at pH 3.0 and Fe(IV)=O prevails at pH 6.0. Sulfur incorporation modulates the FeP electronic structure by expanding the lattice, enhancing Fe–P covalency, and increasing electron density, thereby promoting charge transfer and reducing the activation barrier for H 2 O 2 activation. The optimized FePS 15 catalyst achieved ~99% sulfamethoxazole degradation (150 mg/L) within 15 minutes, exhibiting a reaction rate 2.54 times higher than that of undoped FeP. When further supported on lignin-derived carbon spheres (FePS 15 @LC), it exhibited enhanced structural integrity, suppressed iron leaching, and improved reusability. These findings demonstrate that sulfur doping drives pH-dependent ROS switching from ·OH to Fe(IV)=O, supporting adaptable Fenton-like catalysis. This work improves mechanistic insight into ROS modulation and enables pH-adaptable advanced oxidation processes for pollutant removal.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Changxuan Ye,Shuang Yao,Xiong Xiao,Pei Zhu,Wen Zhang,Xian Yang,Changhua An
Ru-based clusters represent a class of promising electrocatalysts for pH-universal hydrogen evolution reaction (HER), yet their practical application is hindered by nanoparticle aggregation and strong oxygen affinity, leading to compromising activity and stability. This study proposes a strategy by integrating strong metal–support interactions with a built-in electric field (BIEF), in which the electrostatic interaction facilitates the design of a class of heterostructure catalysts comprising RuO2–x clusters and MoO3 on Ni(OH)2 (RuO2–x/MoO3–Ni(OH)2). Detailed characterizations reveal that the engineered BIEF induces charge redistribution, leading to the enhanced electron density at Ru active sites. This electronic modulation effectively weakens the adsorption of the OH group while substantially boosting catalytic activity and stability. The synthesized RuO2–x/MoO3–Ni(OH)2 achieves low overpotentials of 64, 150, and 83 mV at 100 mA cm–2 in 1.0 M KOH, 1.0 M phosphate-buffered saline (PBS), and 0.5 M H2SO4, respectively. Furthermore, it exhibits robust stability for 150 h at 100 mA cm–2 in an alkaline solution. In an anion exchange membrane water electrolyzer, the catalyst requires only 1.76 V to attain 0.5 A cm–2. This work establishes a pioneering pathway for designing efficient electrocatalysts toward the production of clean energy carriers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Ziyi Jiang,Xintong Cao,Enrou Mei,Ye He,Jiapeng Yang,Zhaoping Chen,Yang Li,Xiaojuan Liang,Weidong Xiang
Perovskite quantum dots (PQDs) are widely used in the backlight field of liquid crystal displays (LCDs) due to their narrow-band emission and high color purity. However, their high cost and insufficient stability seriously restrict the industrialization process. This study innovatively adopted the environmentally friendly Pb(OH)2 to replace the traditional PbBr2 lead source, successfully reducing the raw material cost by nearly 50%. At the same time, it significantly improved the optical performance of CsPbBr3@glass by reducing the formation of bromine vacancies. By further introducing La3+, the prepared La3+@CsPbBr3@glass achieved a PLQY increase from 48 to 86%, and maintained a PL intensity of 87% under harsh conditions (60 °C, 90% RH, and continuous exposure to 8000 nit blue light for 40 days), breaking through the stability bottleneck. The color gamut of the CsPbBr3&CsPbBr1I2@glass@PET light conversion film developed on this basis is 94.75% of the NTSC 1953 standard and 70.74% of the Rec.2020 standard. When they are applied to LCD screens, they significantly enhance color performance. It provides an efficient, stable, and low-cost industrial solution for quantum dot film technology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Sustainable Systems
·
2025
·
IF 6.1
Yu Ren,Youhao Zhang,Zizheng Zhou,Yi Fang,Yuzhuo Wang,Yingjie Li
Ca(OH) 2 can be used in CO 2 uptake from the flue gas in fossil-fired power plants. Compared with indirect method where Ca(OH) 2 is first converted into CaO and then uptakes CO 2 , direct CO 2 uptake by Ca(OH) 2 occurs at lower temperature, leading to slighter sintering. However, the direct CO 2 uptake capacity of Ca(OH) 2 should be further enhanced. In this study, Ca(OH) 2 is doped with Mn to improve its direct CO 2 uptake capacity in carbonation-calcination-hydration cycles. The cyclic tests are conducted in a triple fixed-bed reactor. The mechanism of CO 2 adsorbed on Mn-modified Ca(OH) 2 is determined by density functional theory calculations. In the first cycle, Mn-modified sorbents acquire highest carbonation conversion at 400 °C, which is 40 °C lower than Ca(OH) 2 . The modified Ca(OH) 2 with Ca/Mn molar ratio of 100:0.75 exhibits the best performance, and its carbonation conversions reach 0.76 and 0.59 in the 1st and 20th cycles, respectively, which are 28% and 18% higher than those of Ca(OH) 2 . Furthermore, carbonation conversion of this Mn-modified Ca(OH) 2 decreases by within 1.00% from cycle 5 to 20. Mn addition boots oxygen vacancy, increases the surface area and pore volume, and reduces the energy barrier for carbonation of Ca(OH) 2 . Mn-modified Ca(OH) 2 as CO 2 sorbent appears promising.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Mengyao Xue,Yuankang Bao,Xun Xu,Luliang Liao,Ping Li,Hao Zhang,Deliang Li,Binbin Wei,Shuwang Duo
Bimetallic nickel-molybdenum nitride (NiMoN) catalysts have attracted great attention due to their remarkable similarity to group VIII noble metals in terms of electronic structure, good electron conductivity, and durability for the hydrogen evolution reaction (HER). However, the existing approaches for fabricating NiMoN catalysts usually entail a series of multiple steps and hazardous ammoniated ingredient. As a result, these methods are difficult to be scaled up for large-area fabrication towards industrial water splitting. Herein, a hierarchical composite NiMoN@Ni(OH) 2 @NF composite electrode with a sheet morphology was synthesized based on a rational combination of seawater etching and magnetron sputtering. This method is easily scalable for producing large-area electrodes with minimal pollution. The incorporation of Ni(OH) 2 @NF nanoarray carriers enhances the exposure of additional active sites on the NiMoN layer, thereby augmenting the electrochemically active specific surface area of the electrode.The as-synthesized NiMoN@Ni(OH) 2 @NF electrode demonstrates excellent HER activity, with an overpotential of 57 mV at 10 mA cm −2 , and exhibits remarkable long-term catalytic stability for over 100 h at a current density of 100 mA cm −2 .This study presents an eco-friendly and straightforward method for preparing large-scale transition metal nitride catalysts with high catalytic activity.
✓ 已验证
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Heping Zhang,Wenpu Zhang,Mingwei Hu,Yiqi Tang,Gongcheng Xu,Xinghui Hou,Ying Zhou
Ethylene Vinyl Acetate (EVA) has been widely used in various industries for its excellent flexibility and corrosion resistance. However, its high flammability poses significant safety risks, necessitating the incorporation of flame-retardants to improve its fire resistance. This study focuses on the wet surface modification of magnesium hydroxide (MH) using n-octyl triethoxysilane (OTES). The hydrolysis products of OTES react with the OH on the MH surface to form Si O Mg bonds, thereby enhancing the surface hydrophobicity and compatibility with EVA. MMH was incorporated into EVA, and the resulting composites were characterized using XRD, SEM, TG, BET, FT-IR, and XPS. The optimal modification conditions were achieved with an OTES dosage of 3 wt% at 45 °C for 60 min, yielding a contact angle of 142°, an activation index of 98.12%, and an oil absorption rate of 43 mL/100 g. The EVA/MMH composites demonstrated superior thermal stability and flame retardancy compared to unmodified EVA. Specifically, the limiting oxygen index (LOI) of EVA/MMH-55 reached 34.9%, and it achieved a UL-94 V-0 rating, indicating excellent self-extinguishing properties. This study provides a novel approach for the surface modification of MH, offering a practical solution to enhance the flame retardancy and thermal stability of EVA composites. Highlights Hydrophobic MMH is obtained by wet surface coating modification of MH by OTES. Contact angle of MMH is 142° under optimal modification conditions (60 min, 45 °C and 3 wt%) The chemical reaction process between OTES and the MH surface has been analyzed, revealing the mechanism by which the Si OH groups on OTES react with the OH groups on the MH surface to form Si O Mg bonds, which intertwine to form a hydrophobic layer. The specific surface area of MMH is reduced, and it has good compatibility with EVA resin. The LOI of EVA/MMH-55 is 34.9%, making it a nonflammable material.
✓ 已验证
产品关联
DOI
高影响因子
C-Journal of Carbon Research
·
2025
·Vol. 11
·期 2
·32
·
IF 2.9
Ran An,Jinyue Liu,Haomiao Ma,Yuqing Yan,Yuanru Guo,Qingjiang Pan,Shujun Li
To address the need for reducing carbon emissions and enhancing the sustainable utilization of non-fossil resources, a one-step calcination strategy has been developed to fabricate hierarchical carbon aerogels from balsa wood. The resulting wood-derived carbon aerogels (WCA) were functionalized with Mg(OH)2to boost their environmental remediation potential. Comprehensive characterization using XRD, FT-IR, XPS, and SEM confirmed that the optimized WCA/Mg(OH)2composite (WCAMg) retained a three-dimensional hierarchical porous structure, and Mg(OH)2nanosheets were attached to it. The adsorption performance of WCAMg composites towards Cd2+was systematically investigated through controlled experiments, which focused on three critical variables (Mg(OH)2loading content, initial Cd2+concentration and solution ionic strength). The functionalized WCAMg demonstrated a maximum Cd2+adsorption capacity of 351.1 mg g−1—a tenfold improvement over pristine WCA. Combined with exceptional adsorption efficiency, this biomass-derived composite offers an eco-friendly, cost-effective solution for heavy metal ion remediation. Its scalable fabrication from renewable resources aligns with sustainable water treatment objectives, presenting the advantage of pollution mitigation.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhikang Li,Guoping Zhao,Chen Sun,Jianan Li,Chengzhe Xie,Yang Hou,Zhongjian Li,Lecheng Lei,Bin Yang
The electrochemically upgrading sulfate to high-value persulfate (PS) offers significant potential but suffers from impaired selectivity due to competing oxygen evolution reactions (OER). Boron-doped diamond (BDD) electrodes serve as ideal anodes for PS electrosynthesis due to their wide electrochemical window, low adsorption propensity, and superior hydroxyl radical ( OH) generation capacity. Herein, we engineered BDD anodes via a facile one-pot deposition-calcination strategy to construct a Ce 0.1 Sn 2.2 Sb 0.25 O x catalytic layer, dramatically enhancing OH production. The modified electrode exhibited substantially elevated oxygen evolution potential (increasing from 2.726 to 2.905 V vs. RHE), achieved a record Faradaic efficiency (FE) of 90.22 % for PS synthesis at 250 mA/cm 2 , and reached 66.7 μmol/min/cm 2 . The resulting PS solution was concentrated to 1.16 mol/L (15.3 wt%), the highest value reported to date for electrochemical PS synthesis. Electron paramagnetic resonance (EPR) studies confirmed the significant augmentation in OH yields. The incorporation of Sb refined SnO 2 crystallites and strengthened H 2 O adsorption, whereas trace Ce doping markedly improved the stability of catalytic layer and facilitated electron transfer, as evidenced by only a 0.95 % activity loss after 30 successive electrolysis cycles. Mechanistic investigations reveal that the catalytic layer preferentially promotes the indirect oxidation pathways via OH mediation, leading to a marked increase in PS selectivity. This work establishes a simple, cost-effective, and scalable BDD modification strategy with significant industrial potential for electrochemical PS synthesis and waste sulfate resource valorization.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2019
·
IF 2.29
Jun-Feng Wang,Pan Liang
A pure barium borate of BaB 8 O 11 (OH) 4 ·3H 2 O has been synthesized and characterized by XRD, FT-IR, TGA, and chemical analysis. The molar enthalpies of solution of BaB 8 O 11 (OH) 4 ·3H 2 O in 1 mol dm −3 HCl(aq), and Ba(OH) 2 ·8H 2 O in the mixture solvent of {2.00 cm 3 of 1 mol·dm −3 HCl + H 3 BO 3 (aq)} were measured by microcalorimeter at T = 298.15 K, respectively. With the use of previously determined enthalpy of solution of H 3 BO 3 (s) in 1 mol·dm −3 HCl(aq), and the standard molar enthalpies of formation for Ba(OH) 2 ·8H 2 O(s), H 3 BO 3 (s), and H 2 O(l), the standard molar enthalpy of formation of −(7500.6 ± 6.5) kJ·mol −1 at T = 298.15 K was obtained based on an appropriate thermochemical cycle. Moreover, the molar enthalpy of formation of −6091.7 kJ mol −1 for [B 8 O 11 (OH) 4 ] 2− was estimated by a group contribution method, which was used to predict the Δ f H m o of a series of alkaline-earth metal borates for MB 8 O 11 (OH) 4 (M = Ca, Sr, Ba).
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）