CRYSTAL GROWTH & DESIGN
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2026
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IF 3.6
Zheng-Hao Li,Zheng Cheng,Xue-Yuan Guo,Guangdong Chen,Ning-Ning Zhang,Chuipeng Kong,Irshad Hussain,Kun Liu,Yang Yang
Control over crystal polymorphism remains a critical challenge in materials design, with broad implications for pharmaceutical efficacy, device performance, and materials stability. Here, we present a facet-directed strategy for polymorph control of organic molecular crystals using morphology-defined CeO2 nanoparticles as heterogeneous nucleating agents. Cubic and octahedral CeO2, predominantly exposing the (100) and (111) facets, respectively, were employed to regulate the crystallization of three model polymorphic compounds: 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophenecarbonitrile (ROY), tolfenamic acid (TFA), and carbamazepine (CBZ). Under identical conditions, CeO2(100) consistently induced the formation of thermodynamically stable polymorphs─ON for ROY, Form I for TFA, and Form III for CBZ─whereas CeO2(111) preferentially promoted metastable forms─YN, Form II, and Form II, respectively. In situ optical microscopy revealed distinct nucleation kinetics and growth morphologies between the two facets. Density functional theory (DFT) calculations of ROY adsorption further revealed stronger binding on the (100) surface, rationalizing the observed polymorph selectivity. These findings establish a generalizable framework for facet-directed heterogeneous nucleation, offering a mechanistic basis for polymorph control via surface atomic structure and enabling rational design of nucleating agents in crystal engineering.
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LANGMUIR
·
2026
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IF 4.4
Zhihao Zhang,Jiao Wang,Yang Liu
Droplet triboelectric nanogenerators (D-TENGs) hold significant promise for ambient energy harvesting, yet their insufficient output limits practical application. This study proposes an interfacial engineering strategy employing fluorosilane-modified SiO2 (F-SiO2) to enhance the performance of conventional D-TENG based on polytetrafluoroethylene. The constructed F-SiO2-coated droplet TENG (FSD-TENG) exhibits superior hydrophobicity compared to conventional D-TENG, achieving a contact angle of 152.3°. The FSD-TENG achieves an open-circuit voltage of 201.7 V, which is 5.8 times higher than that of untreated devices, and delivers an output power of 2.1 mW, representing a 7-fold improvement over conventional D-TENG. Its practical potential is demonstrated by illuminating 300 LEDs upon a single droplet impact. Furthermore, the FSD-TENG’s output characteristics exhibit a strong correlation with droplet pH. Leveraging multi-feature fusion of voltage and current signals, we developed a raindrop pH monitoring system. This system accurately identifies raindrop pH via FSD-TENG’s output, with a neural network achieving 95% identification accuracy within pH 3–7 after 20 training epochs. Consequently, the FSD-TENG-based monitoring system not only provides novel data support for digital twin technology but also pioneers innovative pathways for environmental monitoring, showcasing a complete technological chain from fundamental research to practical implementation.
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ACS ES&T Engineering
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2026
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IF 6.3
Linghui Peng,Weina Zhao,Fukai Xu,Manlin Dong,Guiying Li,Weiping Zhang,Zhishu Liang,Taicheng An,Huijun Zhao
The demand for self-cleaning air purification is urgently increasing due to concerns for human health and long-term use. Herein, this study investigated the enhanced mechanism of a self-cleaning artificial spider silk (PMAS) photocatalyst, which was modified by bioaffinity polydopamine (PDA) for highly efficient bioaerosol adhesive capture and photocatalytic inactivation. By increasing the bioaffinity of the PMAS photocatalyst, bioaerosols can adhere to the surface, increasing capture efficiency by 50–700%. The captured bioaerosols were concentrated on the spindle knots of the PMAS photocatalyst, forming droplet reactors for subsequent photocatalytic inactivation. Through a combination of experiments and calculations, the mechanism of enhanced capture efficiency by the PMAS photocatalyst was revealed: PDA endows doubled adsorption energy and tripled adhesion forces between the interfaces of bioaerosols and the photocatalyst due to the abundant indole and amino groups. PDA also provides hydrophilic properties to the PMAS photocatalyst, leading to a sevenfold increase in captured bacterial droplet volumes. Due to its bioaffinity, hydrophilic, and photocatalytic properties, the PMAS photocatalyst possesses self-cleaning capability by in situ inactivation of microorganisms and purification of self-washed debris, facilitating repeated use for long-term capture and regeneration of occupied active sites. This work may offer rational designs for a new generation of self-cleaning photocatalysts for air purification.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Xinyu Lv,Peng Wei,Xueying Wang,Hui Sun
In situ emulsification is a promising enhanced oil recovery technique but faces challenges including environmental concerns and high operational costs. To address this, we developed amphiphilic nitrogen-doped carbon dots (NCDs) via a facile one-pot synthesis. The NCDs exhibit high interfacial activity and undergo a three-step self-assembly with endogenous naphthenic acids in crude oil─via hydrophobicity-driven diffusion, electrostatic adsorption, and interfacial jamming─to form a rigid film with ultralow interfacial tension (∼0.66 mN/m). The resulting emulsion shows a bridged network structure and high stability. Microfluidic experiments reveal that stable oil-in-water emulsions form over a wide concentration range, with three distinct flow regimes (squeezing, dripping, and jetting) governed by capillary number and droplet size scaling as (D/Dh) ∝ Cac–1.5. The emulsion also exhibits fully reversible, CO2-responsive demulsification with minimal NCDs loss over cycles. Under simulated reservoir conditions, NCDs maintain ultralow tension and high elasticity in heavy oil, show good thermal and salinity stability, and enhance oil recovery by 33.45% over water flooding, demonstrating strong field potential. This work offers a sustainable strategy for developing efficient oilfield chemicals with lower cost and environmental impact.
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Journal of Physical Chemistry C
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2026
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IF 3.4
Chenfei Li,Mingzheng Gu,Juan Wang,Shuang Li,Ling Jiang,Yuerong Pei,Xiaojun Zhang
Copper-based electrocatalysts are regarded as highly efficient electrocatalysts due to their low cost and environmental friendliness. However, their practical application in water splitting remains severely limited by intrinsic drawbacks such as inferior electron transfer kinetics and moderate catalytic activity. Herein, we synthesized copper oxysulfide (CuSxO1–x) flake-like nanoflowers through a redox reaction and explored their application as efficient electrocatalysts for the oxygen evolution reaction. As expected, compared to the original CuS, the copper oxysulfides exhibited superior OER activity and stability, showing a remarkably low overpotential of 206 mV at a benchmark current density of 10 mA cm–2 for the OER. This study elucidates the reconstruction of copper oxysulfide electrocatalysts during the oxygen evolution reaction through in situ ATR-IR measurements. The facilitated formation of reaction intermediates and accelerated reconstruction kinetics during the structural evolution of copper oxysulfide synergistically contribute to its enhanced oxygen evolution reaction performance.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Qi Feng,Yiyao Liu,Fei Pang,Lili Yang,Dengteng Ge
Smart optical films integrating multiple modalities (fluorescence, phosphorescence, transmission, and scattering) demonstrate significant potential for flexible displays and optical devices. However, fabricating such films remains challenging due to structural design complexity and material synthesis difficulties. Herein, a smart multimodal optical film (SMOF) is fabricated by embedding visible-light-excited phosphorescence nanoparticles (CD-SiO2 NPs) within the polydimethylsiloxane (PDMS) matrix. Notably, the optical properties of SMOF are dynamically tunable through mechanical deformation and visible-light excitation, which effectively circumvent the intrinsic limitations of ultraviolet (UV) excitation. In the released state, the SMOF architecture demonstrates exceptional UV–vis transmittance, which is attributed to the similar refractive index between the PDMS and SiO2 NPs. Concurrently, this film facilitates green-emissive fluorescence and phosphorescence under flashlight excitation, thereby eliminating UV-induced photodegradation. In addition, mechanical deformation will induce the formation of cracks and voids at the CD-SiO2 NPs and PDMS matrix, which can amplify light scattering and enhance the ability of CD-SiO2 NPs to absorb scattered light. These synergistic interfacial phenomena collectively govern the optomechanical switching behavior of the SMOF system, consequently achieving its broadband transmittance regulation while simultaneously amplifying the photoluminescence intensity. These distinctive optomechanical characteristics establish SMOF as a multifunctional platform, particularly suitable for stimuli-responsive privacy protection, UV-shielding applications, and persistent-luminescence-based traffic safety systems.
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ACS Catalysis
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2026
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IF 13.6
Jingbin Huang,Chunhe Yu,Jie Zhu,Maoyuan Huang,Ziyu Zhang,Keke Zhang,Guanxin Zhang,Yuli Wang,Da Liu,Lin Jin,Renbing Wu
MoS2-based catalysts typically confront the critical challenge of balancing high catalytic activity and stability for the hydrogen evolution reaction (HER). This issue remains largely unresolved to date, seriously hindering their practical application. Herein, we develop a feasible molecule fence strategy to address this challenge by confining highly active Ni-doped MoS2 (Ni-MoS2) within a NiS2 fence featuring molecular selectivity. The combined density functional theory (DFT) calculations and in situ spectroscopy measurements reveal that the NiS2 layer as a molecule fence not only enhances the adsorption of H2O molecules but also protects Ni-MoS2 active components from the corrosion by O2 and OH– toxic species, thus greatly inhibiting the leaching of Ni-MoS2 as well as promoting its HER activity. Furthermore, the Ni-MoS2@NiS2-assembled anion exchange membrane water electrolysis (AEMWE) device can achieve a low voltage of 1.85 V to reach a current density of 1000 mA cm–2 and maintains a long-term operation for 1000 h. This study offers insights and valuable guidance for rational construction of electrocatalysts with high activity and stability.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Shaohui Zhang,Qing Li,Suying Liu,Juan Luo,Yuke Gu,Xuanzhi Liu,Feng Liu,Pengfei Tan,Jun Pan
Defect fabrication is a practical nanosurface engineering to efficiently promote the oxygen reduction reaction (ORR) but remains a huge challenge. Herein, defect-rich ordered PtCu nanooctahedrons (D-PtCu-NOs) were prepared using Cl– as a shape-directing and etching agent. As a result, the D-PtCu-NOs catalyst achieves a mass activity of 1.147 A mgPt–1, which is 10.6-fold that of Pt/C. Meanwhile, the ordered and octahedral structures of the D-PtCu-NOs catalyst enable it to achieve an extremely high catalytic stability for 30,000 cycles. Convincingly, the D-PtCu-NOs catalyst also displays a higher peak power density and long-term durability than Pt/C in fuel cells. Besides, theoretical calculations reveal that the pore defects reduce the d-band center of Pt, lower the H2O formation barrier to boost the ORR activity, whereas the ordered structure inhibits the solubility of Pt and Cu, thereby improving the catalytic stability. This work highlights the importance of defect engineering for Pt-based nanocrystals to enhance the ORR.
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LANGMUIR
·
2026
·
IF 4.4
Zhipeng Su,Xueyin Zhang,Haiwei Li,Pingchuan Sun,Tiehong Chen
Desilication by alkali etching is generally used to prepare hierarchical zeolites to enhance their mass transfer properties; however, for high Si/Al ratio zeolites, the alkali etching would greatly reduce the framework crystallinity or even give rise to amorphous product. Though organic amines have been used as additives during alkali etching to protect the microporous framework, the problems of toxicity, volatility, high cost, and nitrogen-containing wastes induced by organic amines would hinder their scalable application. In this study, we provide a different viewpoint on the protective mechanism of zeolite micropores during alkali etching, and the attention is focused on the framework polarity, which has not been studied before. We develop a hydrophobic nitrogen-free organic molecule (such as acetophenone)-protected alkali etching method to prepare hierarchical zeolites with high crystallinity and high porosity, and the prepared hierarchical Y zeolites showed enhanced performance in the catalytic cracking of bulky molecules. This method is based on the principle that the hydrophobic micropores of high-silica zeolites could adsorb hydrophobic organic molecules from aqueous solution, which would fill in the zeolite micropores and prevent excessive OH– damage to Si–O–Si bonds. Thus, our method is facile for scalable production without the tedious pretreatment of vacuum dehydration, organic amine impregnation, and drying before alkali etching. Furthermore, concerning the characteristics of a nitrogen-free process and low volatility, using acetophenone as a protective agent would reduce the cost and avoid nitrogen-containing wastes in practical applications.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Tingyu Li,Yixin Wang,Li Hao,Yiping Sun,Shujuan Liu,Qian Ye,Feng Zhou
Herein, nitrogen, phosphorus, and fluorine codoped MXene (N,P,F-MXene) was synthesized via thermal treatment using 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) as the doping precursor. Comprehensive characterization confirmed the effective incorporation of nitrogen, phosphorus, and fluorine into the MXene lattice. Tribological testing revealed that N,P,F-MXene demonstrated excellent performance as an additive in lubrication, showing significantly reduced friction and wear. Specifically, it achieved an average COF of 0.109 and reduced wear volume by 62.5% versus the base oil. Furthermore, the N,P,F-MXene-based lubricant exhibited good adaptability under extreme operating conditions, sustaining stable tribological behavior over a broad load, frequency, and temperature range. Notably, its load capacity reached 500 N. Mechanistic analysis indicates that its superior performance originates from the synergistic effects of the physical filling and adsorption of N,P,F-MXene, coupled with the formation of a tribo-chemical film with low shear strength enriched with nitrogen/phosphorus/fluorine compounds and metal oxides in the friction process. This study provides an effective strategy for heteroatom doping of MXene and offers a promising pathway toward high-performance oil-based lubricant additives.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Chen Lin,Mengxin Liu,Yuhui Liu,Xin Su,Xinan Shi,Daocheng Pan
Quantum-sized SnO2 nanoparticles have emerged as a promising electron transport layer (ETL) in quantum dot light-emitting diodes (QLEDs) due to their high chemical stability, wide bandgap, and high electron mobility. However, their excessive electron mobility often leads to charge transport imbalance, thereby limiting the device performance. Herein, we report a p-type doping strategy using Mg2+ ions to modulate the electron transport capability of SnO2 nanocrystals. By varying Mg-doping concentration, we achieve a wide-range tuning of electron mobility and conductivity over nearly 3 orders of magnitude. This suppression of electron transport enables the balanced charge injection in inverted QLEDs. As a result, red-emitting devices incorporating 2.0% Mg-doped SnO2 ETLs exhibit an average external quantum efficiency (EQE) of 19.35% and a peak EQE of 22.04%. This work demonstrates Mg-doped SnO2 nanoparticles as a superior alternative to ZnO nanoparticles for highly efficient and stable QLEDs.
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ACS Nano
·
2026
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IF 17.3
Yue Chen,Shiqiang Feng,Juan-Feng Zhu,Nuo Yang,Xiangfu Hu,Dan Xu,Yan Wang,Lijun Hu,Haixia Liu,Youzhi Yang,Weigao Xu,Fang Cheng,Lin Wu,Xue-Jun Wu
Symmetrically branched metal nanostructures with intricate structural features and exceptional physicochemical properties demonstrate a significant potential for diverse applications. Nevertheless, achieving precise morphological control over these nanostructures with adjustable dimensions poses a considerable challenge, especially for stellated icosahedrons (STICs) with 20 orderly arranged branches. Here, we present a template replication strategy for the controllable synthesis of metal STICs with various compositions, featuring high yield, uniformity, and adjustable dimensions. The synthesis relies on fine-tuning the reduction kinetics toward heterogeneous nucleation and growth through optimizing the reduction potential of the metal precursors. Notably, the synthesized Au STICs exhibit tunable localized surface plasmon resonances and scattering spectra by varying their sizes as well as profound surface-enhanced Raman scattering (SERS) activity. Electron energy-loss spectroscopy and numerical simulations confirm the symmetrical distribution of their surface plasmon resonances, enabling the polarization-angle-dependent SERS enhancement. Moreover, the resulting magnetic Ni-NiPx STICs exhibit chain-like self-assembly under magnetic fields. This work offers an approach to the rational synthesis of branched nanostructures with complex and intricate architectures that hold significant promise for applications in SERS and catalysis.
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