Materials Today Chemistry
·
2021
·
IF 8.301
Y. Ji,W. Luo,Y. Liu,Z. He,N. Cheng,Z. Zhang,X. Qi,J. Zhong,L. Ren
The bottleneck of alkaline hydrogen evolution reaction lies in the kinetically sluggish brought from multistep reaction processes involving water adsorption and dissociation, as well as hydrogen adsorption. In this work, we successfully synthesized o-CoSe 2 /c-CoSe 2 heterostructures anchored on MoSe 2 nanosheets to powerfully promote reaction processes. As an electrocatalyst , it exhibits a low overpotential of 112 mV at 10 mA/cm 2 and a Tafel slope of 96.9 mV/dec for an alkaline hydrogen evolution reaction . Moreover, the as-prepared catalyst can behave as both cathode and anode for overall water splitting , which only requires 1.61 V cell voltage at 10 mA/cm 2 . Significantly, the cell voltage can be further reduced to 1.53 V at 10 mA/cm 2 for water electrolysis under the simulated solar irradiation owing to such a semiconductor-based heterostructure that facilitates the separation of photogenerated charges. Here, the improving overall performance of this ternary electrocatalyst is attributed to the multifunctionality and synergistic interaction of different components in this heterogeneous material . The work provides a novel strategy to design active catalysts simultaneously using electric energy and solar energy for effective water splitting.
研究领域:
材料科学
·
能源化学
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CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Juanjuan Fu,Yinglian Zhu,Fansheng Cheng,Shuangling Zhang,Tiantian Xiu,Yue Hu,Shuo Yang
For preparing stable water-in-oil-in-water emulsion, the role of nanoparticles in stabilizing the interface is very important. In this study, chitosan hydrochloride-carboxymethyl chitosan (CHC-CMC) nanoparticles were prepared considering electrostatic interactions; then the emulsion was prepared and the stability characteristics in presence of NaCl (0–200 mmol/L) and 30 d storage were studied. CHC-CMC nanoparticles (261 nm) were obtained when the CHC: CMC ratio was 1:2. CHC-CMC formation was verified by FT-IR when a new peak appeared at 1580 cm −1 ; W 2 contained 2 wt % CHC-CMC and W 1 contained 1 wt % sodium alginate , the creaming index (81.6 %) was higher for the emulsions than Tween 80 (67.4 %) after 30 d. Confocal laser scanning microscopy confirmed the double microstructures, in contrast to the collapse with Tween 80, because the CHC-CMC nanoparticles were densely adsorbing on the oil-water interface. This indicates that CHC-CMC has a stronger ability to stabilize W 1 /O/W 2 emulsion than Tween 80.
研究领域:
材料科学
·
胶体与表面化学
·
纳米技术
·
食品科学
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Nature Communications
·
2026
·
IF 18.1
Li Xiancheng,Xia Yuangu,Ma Yanchao,Liu Jiaxuan,Ma Yue,Wang Shuizhong,Lu Qiang,Song Guoyong
C-lignin, a natural biopolymer of caffeyl alcohol subunits linked by benzodioxane motifs, is an ideal feedstock for direct catechol production. However, its hydrogenolysis is hindered by the high bond dissociation energies and steric congestion of vicinal C–O bonds in benzodioxane structures. Here, we report a low-loaded Co–Zn dual single-atom catalyst (Co SA –Zn SA @NC) that enables efficient C-lignin hydrogenolysis, achieving 84.6% catechol yield, 82% selectivity toward 4-propylcatechol, and a turnover number five times higher than precious Ru/C, attributing to the synergistic effect of the dual atomic sites. The major product, 4-propylcatechol, can be readily purified and upgraded into diverse value-added molecules. Mechanistic investigations reveal that the Zn and Co species, acting as the directing and active centers, respectively, synergistically drive the quasi-concerted cleavage of the vicinal C–O bonds. This work presents an atomically dispersed non-precious metal catalyst for C-lignin hydrogenolysis, providing a sustainable route to well-defined aromatics.
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Journal of Coatings Technology and Research
·
2026
·
IF 3.4
Ji Ying,Xie Bin,Shi Hongwei,Song Yingwei,Jiang Xindong
Fluorescent corrosion indicators can identify underlying corrosion on metallic substrates by detecting metal ions resulting from corrosion processes. Nevertheless, the direct incorporation of fluorescent probes into the coating may result in numerous adverse effects. To maximize effective application, encapsulating these probes in specific carriers is considered to be a viable technique. In this work, the design and application of a new fluorescent probe were reported, which contains o-benzylaminophenol (BC) as fluorophores and nanomesoporous silica (MSP) as carrier. MSP, characterized by an average particle size of 90 nm, was synthesized using a sol-gel process. BC was synthesized, which exhibited yellowish-green fluorescence upon the addition of aluminum nitrate, methanol, and water. A novel intelligent container with the function of early corrosion warning was developed by incorporating BC into the MSP carrier by vacuum impregnation. BC@MSP smart containers were included in the solvent-based polyurethane coatings and applied on 2024-T3 aluminum alloy. The coating is engineered to identify corrosion within 24 h following exposure to 3.5 wt.% NaCl by the formation of a complex by BC reacting with metal ions (Al 3+ ). Electrochemical impedance evidenced that the epoxy coating with 4 wt.% BC@MSP presents high corrosion resistance even after 28 d.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xin Long,Jian Lan,Shanshan Dai,Hongsheng Lu,Na Wang,Baogang Wang,Yuanqiang Zhu
An instant dissolving W/O polymer prepared via reverse-phase emulsion polymerization. • An ultra-high acid resistance polymer formed from water-soluble hydrophobic monomers. • Integrated application for drag reducing and acidic thickening. • Quantum chemistry is used to clarify the mechanisms of dissolution and acid tolerance. Despite the considerable potential of multistage alternating acid fracturing Technique for unconventional tight reservoir stimulation, the integration of acid-thickening and drag-reduction functions within a single additive remains challenging due to the slow dissolution of gelling agents, poor acid resistance of drag reducers, and compatibility issues among multiple chemical additives. Herein, a multifunctional polymer emulsion (PAADT) was rationally designed using a hydrophobic monomer (AT-100) and a high-charge-density symmetric cationic monomer (Dimethyl Diallyl Ammonium Chloride, DMDAAC) to overcome these limitations. PAADT completely dissolved in water and concentrated HCl within 120 s and 330 s, respectively, while retaining viscosity stability for over 120 h and demonstrating exceptional tolerance to multivalent ions. Quantum chemical calculations, including LogP, independent gradient model based on Hirshfeld partition (IGMH), and electrostatic potential (ESP) analysis, revealed that the synergistic effect of polymer-water interactions and electrostatic repulsion governs the dissolution behavior and acid-salt resistance of PAADT. This work establishes a structure–property relationship between monomer architecture and macroscopic performance, providing a molecular design strategy for developing multifunctional polymers for complex environments. Download: Download high-res image (246KB) Download: Download full-size image
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Zhao Xin,He Xiangnan,Tang Gangqiang,Du Zhuoao,Zhao Chun,Li Yue,Li Bo,Li Lijie,Wang Yanjie
Solvent-free
solid-state ionic conducting elastomers (SICEs) are
emerging as ideal ionic conductors for flexible wearable electronics
due to their superior environmental stability and mechanical compliance.
However, it remains a great challenge to simultaneously achieve high
ionic conductivity, robust mechanical properties, and low hysteresis
in SICEs. Herein, we report a one-pot ultraviolet-initiated copolymerization
strategy to fabricate high-performance poly(4-hydroxybutyl acrylate- co -poly(ethylene glycol) methyl ether methacrylate)/lithium
bis(trifluoromethanesulphonyl)imide (denoted as P(HBA- co -PEGMA)/LiTFSI) SICEs, where 4-hydroxybutyl acrylate (HBA) serves
as the elastic backbone, poly(ethylene glycol) methyl ether methacrylate
(PEGMA) provides ether-rich segments to facilitate ion migration,
and Li + –O coordination bonds are proposed to provide
physical cross-linking sites and contribute to the balance between
mechanical robustness and ionic conductivity. The incorporation of
PEGMA results in a 2921.74% enhancement in ionic conductivity compared
with the neat PHBA/LiTFSI SICE (1.84 × 10 –5 S m –1 ), suggesting that the introduction of ether-rich
PEGMA segments effectively facilitates ion transport in the solvent-free
system. By systematically optimizing the HBA:PEGMA mass ratio and
LiTFSI content, the optimal SICE (HBA:PEGMA mass ratio of 7:3, 30
wt % LiTFSI) exhibits a high ionic conductivity of 3.16 × 10 –4 S m –1 , a tensile strength of 277.25
kPa, an elongation at break of 315.73%, and excellent environmental
stability (weight change rate <4% after 7 days of ambient storage).
Furthermore, the as-assembled SICE-based strain sensor displays a
wide sensing range (0–300% strain), a linear gauge factor of
1.605 ± 0.015, an ultralow electrical hysteresis (∼0.52%),
outstanding cyclic stability, and reliable static sensing performance.
This work provides a facile and effective design paradigm for developing
high-performance solvent-free ionic conductors toward advanced flexible
sensing applications.
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ENERGY & FUELS
·
2026
·Vol. 40
·期 34
·19056-19065
·
IF 6
Yang Tao,Zhu Xiaofeng,Zhang Shicheng
The large-scale production of sustainable
aviation fuels
(SAFs)
heavily relies on hydrogen supply, while traditional hydrogen storage
and delivery suffer from safety risks and high cost. Hydrogen peroxide
(H 2 O 2 ) is regarded as a promising hydrogen carrier,
which can be produced on-site through a green electrochemical two-electron
oxygen reduction reaction (2e – ORR). Herein, oxygen,
nitrogen co-modulated carbon (O-NC) catalysts were fabricated by doping
N dopants and oxygen-containing functional groups (OFGs). The pyrrolic
N is revealed to jeopardize the electronic structure of the NC catalyst,
and the OFGs can further regulate the NC matrix for 2e – ORR. As a result, the optimized O-NC-5 catalyst exhibits an excellent
H 2 O 2 selectivity of over 80% in both alkaline
and neutral electrolytes. After further optimizing Nafion content,
catalyst loading, and operating conditions of O-NC-5-based gas diffusion
electrodes, the assembled flow cell can deliver a high H 2 O 2 yield of 3.4 mol g cat –1 h –1 and Faradaic efficiency of above 90%, with
robust stability over 12 h. This work reveals the synergistic effects
of N dopants and OFGs toward 2e – ORR performance
and offers a feasible strategy to develop high-performance carbon
electrocatalysts and practical electrode systems for green H 2 O 2 production, which supports the SAF synthesis.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 33
·19601-19611
·
IF 4.6
Zhang Shi-Rui,Wang Xiao-Ming,Xie Zi-Juan,Xia Yuan-Guang,Cheng Zhao-Yi,Yin Wen,Li Jia-Chen,Zhang Hu,Yang Zu-Pei,Kuang Xiao-Jun,Jiao Huan
Mixed-anion defect engineering is
an effective strategy
for tuning
local structures and ion transport in complex oxides. Herein, we report
the Li 3 N-assisted synthesis of the oxynitride La 24 Li 23 Ti 5 O 53 N 3 (LLTON)
and clarify the role of O/N incorporation in defect reconstruction
and Li-ion migration. Structure analyses reveal that nitrogen preferentially
substitutes apical oxygen sites in Li/Ti octahedra, inducing Li-site
redistribution and oxygen-vacancy formation. These coupled defects
reconstruct the local coordination environment and disrupt the ordered
defect arrangement of the parent oxide while retaining the tetragonal
framework. Variable-temperature diffraction further reveals a thermally
driven structural evolution involving Li-site reorganization, enhanced
positional disorder in the fluorite-related lithium sublattice, and
a halving of the crystallographic repeat along the c direction. Ab
initio molecular dynamics (AIMD) and bond valence site energy (BVSE)
calculations show that these defect-induced and thermally activated
rearrangements lower the Li-ion migration barrier and promote preferential
one-dimensional migration along the c direction. Consequently, LLTON
delivers an ionic conductivity of 3.78 mS cm –1 at
400 ° C, with the activation energy reduced from 0.88 to 0.67
eV. This work establishes a structure–defect–evolution–transport
correlation in mixed-anion oxides and highlights O/N defect engineering
as a useful approach for regulating ion migration in complex oxide
materials.
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PubMed
高影响因子
CATALYSIS TODAY
·
2026
·
IF 5.1
Shuang Wang,Shuo Wang,Xiao-Qian Feng,Huan Wang,Xuelan Hou,Jin Ye,Yong-Hua Zhao
TiO 2 is a widely studied photocatalyst, but its practical performance is limited by poor light utilization and rapid recombination of photogenerated charge carriers. Herein, a TiO 2 -ZIF-8 heterojunction with a chemically bonded interface was constructed through the formation of Ti-O-Zn interfacial bonds. This design integrates the strong adsorption capacity of ZIF-8 with improved charge separation and transfer across the heterojunction. The optimized TiO 2 -ZIF-8 composite showed markedly enhanced photocatalytic activity, achieving 94.6% degradation of methylene blue within 120 min under simulated solar irradiation. Its apparent rate constant reached k = 0.01508 min -1 , which is 1.55 and 2.38 times higher than those of pristine TiO 2 and ZIF-8, respectively. XPS, FTIR, TEM, and PL results confirm the successful construction of the heterojunction and reveal the key role of Ti-O-Zn bonding in strengthening interfacial interaction and facilitating photogenerated carrier migration. Meanwhile, the strong interfacial interaction improved the structural stability of the composite and helped inhibit nanoparticle agglomeration during photocatalysis. Overall, this work provides new insight into the design of high-performance MOF-based photocatalytic systems through interfacial chemical bond engineering.
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Communications Biology
·
2026
·
IF 5.8
Gu Xunhu,Liu Xu,Xiong Yong,Chen Xuefen,Zhang Yancai,Zheng Li-Li,Wang Wei
Major depressive disorder is associated with impaired excitatory synaptic transmission, but the molecular mechanisms linking chronic stress to altered AMPA receptor trafficking remain incompletely understood. Here we show that chronic mild stress increases OGT-mediated O-GlcNAcylation of PIN at serine 88, which stabilizes PIN and enhances its interaction with nitric oxide synthase. This suppresses nitric oxide synthase activity, reduces stargazin S-nitrosylation, weakens stargazin-GluA1 binding, and impairs GluA1-containing AMPA receptor trafficking. Genetic or pharmacological inhibition of OGT restores this signaling pathway and alleviates stress-induced depression-like behaviors in mice. These findings identify the OGT-PIN-NOS-stargazin axis as a regulator of stress-induced synaptic dysfunction and suggest that targeting OGT may help restore AMPA receptor trafficking in depression-related conditions.
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Journal of Spectroscopy
·
2026
·Vol. 2026
·期 1
·5791311
·
IF 1.7
Xue Zhang,Di Lian,Yuan Li,Yutong Du,Zihan Qu,YuXin Cui,Li Li
Studies indicated that some active flavonoids combined with acarbose could reduce the side effects of acarbose and enhance its efficacy. Isorhamnetin-3-O-rutinoside (IOR) is a flavonoid found in many edible herbs. In this work, the synergistic effects of IOR and acarbose on α -amylase/α-glucosidase (PA/AG) were evaluated using ZIP score analysis. In the presence of IOR, the binding constant K b values of acarbose with PA/AG were significantly improved, indicating that IOR exhibited synergistic effect with acarbose by increasing its K b values. Furthermore, in the presence of IOR, acarbose resulted in greater changes in microenvironment and secondary structure of PA/AG. The docking analysis confirmed that IOR and acarbose bound to the different sites of PA/AG. Compared with pure enzyme, the complexes formed by IOR/acarbose with two enzymes were more stable based on dynamics simulations. This study suggested that IOR might be used as a potential synergistic inhibitor of acarbose.
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Shihao Zhang,Feng Liu,Lei Ding,Jingjing Qi,Yuzheng Wang,Yuhan Wu,Laishi Li,Xudong Sun,Yusheng Wu
The persistent contamination of aquatic systems by tetracycline antibiotics necessitates the development of efficient and sustainable adsorbents. Herein, a one-step deep eutectic solvent (DES) strategy is developed for the synthesis of carbon/oxygen co-doped hexagonal boron nitride (BCNO) nanosheets, using a ternary DES (H 3 BO 3 /urea/guanidine hydrochloride) as an all-in-one precursor and self-templating medium. The resulting BCNO material exhibits an ultrahigh tetracycline adsorption capacity of 428.5 mg g −1 . In situ pyrolysis analysis combined with theoretical simulations reveals that the DES-guided process facilitates synergistic heteroatom doping and the formation of a hierarchically porous structure enriched with Lewis acid-base sites. The adsorption process follows a multilayer chemisorption mechanism, driven by the concerted contribution of π-π stacking, hydrogen bonding, and Lewis acid-base coordination. The material exhibits excellent regenerability, retaining >85% of its original adsorption efficiency after five consecutive cycles. This work not only presents a scalable and eco-friendly route to functional BN nanomaterials but also provides fundamental insights into the molecular-level design of high-performance adsorbents for environmental remediation.
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