Journal of Physical Chemistry C
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2026
·
IF 3.2
Lihong Qi,Yi Wu,Junwei Zhou,Xiaohu Zhao,Yuanchen Jiang,Qingyuan Zhou,Yusheng He,Jiaxin Rui,Zhaogang Teng,Jianhui Sun,Song Wang,Kai Pan
Lead halide perovskites have emerged as promising candidates for next-generation optoelectronic devices owing to their tunable bandgaps, high photoluminescence efficiency, and excellent carrier transport characteristics. Low-dimensional nanostructures, particularly nanowires (NWs) and nanoplatelets (NPLs), further enhance these properties through anisotropic charge transport and strong quantum confinement; however, direct morphology-dependent comparisons remain limited. Herein, CsPbBr3 NWs and NPLs were synthesized via a ligand-regulated hot-injection strategy that enables precise dimensional control by tuning ligand ratios. The NWs exhibit uniform one-dimensional (1D) geometry (∼9 nm diameter), whereas NPLs form ∼5 nm-thick two-dimensional (2D) structures. Structural and optical analyses reveal morphology-dependent spectral responses in which NWs show exciton absorption and emission at 505/520 nm, while NPLs display pronounced blue-shifts (465/480 nm) due to enhanced vertical confinement. Time-resolved photoluminescence reveals significantly longer exciton lifetimes in NWs (88.06 ns) than NPLs (32.20 ns), indicating reduced defect density and superior radiative recombination characteristics. Femtosecond transient absorption confirms slower carrier trapping and prolonged hot-carrier relaxation in NWs. This comparative study establishes a direct structure–property relationship between 1D and 2D CsPbBr3 nanostructures, offering insight into morphology-guided design for lasers, single-photon emitters, and blue optoelectronic devices.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yixin Chen,Yisimayili Tuersun,Pingjun Luo,Tong Wu,Zexi Chen,Yubin Ke,Sheng Chu
Water-based lubrication systems are increasingly attractive due to their environmental friendliness, cost-effectiveness, and safety merits. While oleic acid-modified magnetite nanoparticles (Fe 3 O 4 -OA) have demonstrated promising properties as lubricant additives in oil-based systems, their performance in water-based lubrication systems remains largely unexplored, as the Fe 3 O 4 -OA nanoparticles exhibit limited dispersion stability and tribological performance in aqueous environments. In this study, Fe 3 O 4 -OA was combined with amine-functionalized silica (SiO 2 -NH 2 ) nanoparticles to enhance the anti-friction and anti-wear properties in water-based lubrication. Comparative tribological tests showed that adding 1 wt% Fe 3 O 4 -OA and 1 wt% SiO 2 -NH 2 reduced the coefficient of friction by 72.4% and the wear volume by 81.7% under a 100 N load compared with pure water. Small-angle neutron scattering (SANS) analysis reveals that increasing Fe 3 O 4 -OA concentration led to a more extended configuration of oleic acid molecular chains, facilitating interactions with surface amine groups on SiO 2 -NH 2 . These interactions promote the formation of a stable and compact tribofilm through combined Lewis acid–base coordination, hydrogen bonding, and electrostatic attraction. The improved frictional performance provides insights into the rational design of high-performance, water-based lubrication systems via nanoparticle additives.
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Nature Communications
·
2026
·
IF 18.1
Du Yuxiang,Xiu Yueyue,Yang Xin,Fu Rui,Liu Dan,Liu Lipeng,Sai Huazheng
Aerogels exhibit excellent properties owing to their nano-sized building blocks and unique structures. With increasing application demands, traditional nanoscale building blocks have limitations in further optimizing the performance of aerogels; therefore, the development of novel, high-performance building blocks has become an urgent challenge in the field. Sub-1 nm nanowires (SNWs) exhibit polymer-like properties that make them superior to nanoscale nanowires, and are well-suited as new building blocks for aerogels. In this study, we achieved precise control over the aggregation state of GdOOH SNWs (Gd–SNWs) in three-dimensional space by regulating the interactions between SNWs as well as between SNWs and solvents, thereby obtaining SNW aerogels (SNWAs) with low density ( ~ 0.024 g cm −3 ) and high specific surface area (505 m 2 g −1 ). After silanization, the superhydrophobic SNWAs exhibited excellent fatigue resistance (50 cycles with a set strain of 50%). This innovative approach enriches the types of aerogels building blocks and opens up new avenues for high-performance aerogels.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2026
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IF 5.9
Yinuo He,Mingshan Xue,Zhen Hong,Zuozhu Yin,Dongsong Yin,Wenqing Shi
The escalating demand for nickel driven by electric vehicles and renewable energy storage has led to dual challenges of environmental pollution and resource sustainability. Herein, we report the synthesis of hydroxyapatite nanowires (HAPNWs) via a biomimetic solvothermal approach, positioning them as a rapid-uptake and eco-friendly adsorbent for targeted Ni2+ removal and recovery. The unique interwoven nanowire structure endowed the material with a high specific surface area (18.02 m 2 /g) and abundant mesopores, resulting in ultrafast adsorption kinetics, reaching equilibrium within only 4 min—significantly outperforming conventional adsorbents. The adsorption process, well-described by the pseudo-second-order and Langmuir models, was identified as monolayer chemisorption. A comprehensive mechanistic study, combining XPS, FT-IR, and XRD analyses, revealed that the adsorption proceeds via a synergistic effect of ion exchange (Ca 2+ /Ni 2+ ), surface complexation with phosphate/hydroxyl groups, and partial reduction. The HAPNWs exhibited exceptional selectivity for Ni 2+ over competing ions like Li + and Mg 2+ , which is crucial for treating complex waste streams such as battery recycling effluents. Furthermore, the adsorbent demonstrated excellent reusability, with a high Ni 2+ recovery efficiency of 92% using dilute HCl. This work highlights an operationally simple inorganic adsorbent emphasizing minute-scale Ni 2+ capture and acid regeneration for nickel recovery in a resource-recovery context.
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Matter
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2026
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IF 15.7
Pengbo Ding,Pui Kei Ko,Mi Gu,Aleksandr A. Sergeev,Mohsen Tamtaji,Yichi Zhang,Yuling Huang,Hang Lyu,Hoi Lam Tammy Tsang,Dezhang Chen,Xihan Chen,Liang Guo,Kam Sing Wong,GuanHua Chen,Xiao Wei Sun,Jonathan E. Halpert
High-entropy alloying (HEA) has been shown to enhance stability and optoelectronic properties in various materials, including recent demonstrations in perovskite nanocrystals (PNCs). However, the use of HEA-PNCs outside traditional optoelectronics, specifically as single-photon sources (SPSs) for quantum information science, remains largely unexplored. Here, we demonstrate that HEA intrinsically improves the room temperature performance of PNC-based SPSs. By introducing multiple divalent cations at the Pb site, we create a high-entropy crystal lattice that facilitates exciton localization, enhancing radiative recombination while suppressing trap-assisted and phonon-mediated losses. Ab initio molecular dynamics simulations corroborate exciton localization and reveal that reduced electron-phonon coupling in HEA-PNCs diminishes exciton dephasing. Consequently, our HEA-PNCs exhibit a high single-photon emission purity of 96%, with nearly non-blinking emission at room temperature, marking the first intrinsic materials-based solution to achieve such performance. These results establish HEA as a robust design principle for next-generation room temperature PNC-based quantum emitters.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 7
·495
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IF 3.2
Xie Yaochen,Liu Guangli,Wu Shiqi,Xu Zicong,Ye Jianheng,Qian Yannan
The development of deep-blue emitting perovskite quantum dots (PeQDs) has been significantly hindered by the surface defects and halide migration. To overcome these problems, a synergistic strategy combining strong quantum confinement and mixed-halide engineering was proposed to achieve highly efficient deep-blue emission. An excellent multidentate ligand 1-carboxymethyl-3-methylim-idazolium chloride (HOOCMIMCl) was introduced into CsPbBr 3 QDs, resulting in ultra-small monodisperse particles with an average diameter of 4.2 nm. The ultra-small CsPbBr 3 QDs exhibited deep-blue emission at 457 nm with a high photoluminescence quantum yield (PLQY) of 77%. Based on density functional theory (DFT) calculations and experimental results, HOOCMIMCl ligand also passivated uncoordinated Pb 2+ by C = O and reduced bromine vacancies (V Br ) through C = N in imidazole ring, improving the PLQY and stability of CsPbBr₃ QDs. It opens a new pathway for realizing highly efficient deep-blue emitting PeQDs with a tunable emission wavelength and offers a research basis for advancing high-performance PeLEDs in the deep-blue region.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2026
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IF 4.5
Hanxu Guo,Yao Dai,Hong Yuan,Huakun Zhao
In recent years, the catalytic pyrolysis of biomass to produce benzene, toluene and xylene (BTX) by ZSM-5 zeolite with hierarchical pore structure has received significant research interest. The dendritic ZSM-5 (DZ) zeolite with high specific surface area and hierarchical pore structure was synthesized in present work. The acid strength and acid type of the catalyst were systematically tailored by precisely adjusting the Si/Al molar ratio and incorporating zinc and iron modifications. The crystal structure, morphology, pore characteristics, and acidic properties of the catalyst were systematically characterized by XRD, TEM, FTIR, 27 Al MAS NMR, NH 3 -TPD, and Py-IR. The results show that adjusting the acid strength and acid type effectively promoted the catalytic pyrolysis of oleic acid into BTX. The metal Zn modification could significantly reduce the Brønsted-to-Lewis (B/L) acidity ratio of DZ, which not only optimized the balance of acid site types but also enhanced its catalytic performance. The appropriate modification with Fe not only further optimized the acid site distribution but also enhanced the dispersion of Zn species, leading to the formation of additional ZnOH + activation centers and thereby promoting the aromatization of low-carbon olefins. The 2Fe5Zn/DZ 30-0.05 catalyst achieved a high BTX yield of 14.8% while maintaining stable catalytic performance for up to 40 h.
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APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Zeyi Wang,Linqi Chen,Jingzhou Li,Xuting Chen,Xinjie Li,Beier Zhou,Hongxing Dong,Long Zhang
Lead sulfide quantum dots (PbS QDs) offer significant potential for near-infrared (NIR) free-space optical communication (FSOC) due to tunable bandgaps and broad spectral response. However, their microsecond-scale photoluminescence (PL) lifetimes and pronounced Auger recombination critically limit modulation bandwidth and signal-to-noise ratios. Plasmonic nanostructures can address these limitations via the Purcell effect, but the involved lithographic fabrication compromises scalability and precise sub-wavelength structuring. This work presents a facile, lithography-free methodology for dense, vertically aligned gold nanorod (Au NR) arrays with strong localized surface plasmon resonance (LSPR) across the NIR. By combining seed-mediated synthesis of high-aspect-ratio Au NRs (>8) with precise solvent evaporation-induced self-assembly (EISA) on functionalized substrates, vertically oriented arrays are achieved. The integration of vertical and well-aligned Au NR arrays with PbS QD photoconversion layer induces a 769% peak PL intensity enhancement at resonance. Moreover, the Purcell effect from strong near-field confinement accelerates spontaneous emission, reducing the ensemble-average PL lifetime from 860 ns to 279 ns – a critical advance for bandwidth. Within a representative FSOC link employing intensity modulation, the optimized plasmon-enhanced PbS QD photoconversion material achieves a −3 dB bandwidth of 930 kHz and supports 2.0 Mbps on–off keying (OOK) with a bit error rate (BER) of 3.8 × 10⁻ 3 under ambient conditions. This demonstrates a promising improvement over baseline QD devices and validates the efficacy of the EISA-fabricated plasmonic array for high-speed NIR FSOC.
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Journal of Materials Chemistry A
·
2026
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IF 9.2
Noor Zaman,Yiqun Li,Tongjun Zheng,Jing Zhou,Abdul Basit,Haider Ali Tauqeer,Biniyam Zemene Taye,Muhammad Salman Yousaf,Shizi Luo,Zheng Liang,Xiaoli Chen,Lavrenty G. Gutsev,Ritabrata Sarkar,Andrey S. Vasenko,Gennady L. Gutsev,Xueqing Xu
Interface engineering plays a crucial role in determining the performance of lead sulfide (PbS) colloidal quantum dot (CQD) solar cells. Defects and surface states at the PbS–electron transport layer (ETL) interface significantly influence charge extraction and recombination processes. ZnMgO nanoparticles are widely employed as ETLs due to their high electron mobility and facile synthesis; however, excess surface hydroxyl (–OH) groups introduce interfacial trap states that impede efficient electron extraction. In the present work, we have overcome these limitations through solvent-mediated surface modification of ZnMgO surfaces, which utilizes a simple toluene treatment. Untreated ZnMgO films have high surface energies and low wettability, resulting in a lack of uniform coverage of PbS CQD films, which leads to an undesirable increase in the rate of recombination. Toluene treatment allows the surface hydroxyl groups to be removed, which was validated by morphological analysis and also analyzed via density functional theory calculations. Such surface modification is shown to suppress trap-assisted recombination and promotes efficient transfer of electrons, which leads to a significant improvement in Voc, Jsc, and FF. As a result, the power conversion efficiency increased from below 1% in untreated devices to 6.73% upon toluene treatment of the ZnMgO ETL. These findings offer a straightforward and powerful approach to streamline efficient ETL/CQD interface engineering with minimized interfacial flaws and realize the full potential of PbS CQD solar cells in high-efficiency photovoltaic applications.
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JOURNAL OF LUMINESCENCE
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2026
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IF 3.8
Ou Hai,Yuxin Deng,Xin An,Peng Li,Keke Guan,Hang Li,Jiaxin Qin,Weikang Dong,Yuanting Wu
CsPbI 3 perovskite quantum dots demonstrate tremendous potential in display and lighting technologies due to their excellent luminescent properties. However, conventional synthesis methods typically involve toxic reagents and complex procedures, which not only pose severe safety and environmental risks but also present long-term, serious challenges to the stability of the resulting products. Developing efficient and convenient synthesis strategies to achieve controllable preparation of high-quality red perovskite quantum dots represents a significant research direction in this field. Based on the concept of green synthesis, this study develops a spray-drying method using only water as the solvent to prepare CsPbI 3 perovskite quantum dots. In this method, CsPbI 3 perovskite quantum dots crystallize directly within KI, which not only achieves effective isolation from the external environment but also provides an iodine-rich atmosphere. Meanwhile, it effectively suppresses agglomeration of quantum dots, thereby enabling a rapid one-step synthesis of highly stable perovskite quantum dots. The prepared CsPbI 3 quantum dot crystals exhibit excellent performance, with a full width at half maximum (FWHM) of merely 43 nm. Thanks to the protection of the KI matrix, the obtained powder exhibits excellent phase stability in air, along with good redispersibility, facilitating its incorporation into ink systems. We have successfully applied it to patterned fluorescent anti-counterfeiting labels and further integrated it with blue GaN chips to fabricate red light-emitting diode (pc-LED) prototype devices with high brightness and color purity. The successful implementation of this method has significantly advanced its practical application in optoelectronic devices such as light-emitting diodes (LEDs) and wide-color-gamut displays.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Longyun Liu,Xiaohui Li,Jiejun Ren,Liangjun Chen,Si Chen,Guoping Yan,Fan Liu,Jun Huang
Lead halide perovskite quantum dots (PQDs) exhibit outstanding optical properties, including high photoluminescence quantum yield, narrow emission bandwidth, and tunable emission wavelengths. However, structural instability and susceptibility to degradation in aqueous environments significantly limit their applicability in biological imaging systems. Therefore, the development of PQD-based imaging platforms with excellent optical performance and enhanced aqueous stability remains a critical challenge. Herein, a water-dispersible nanocomposite nanoimaging platform CsPbBr3–Fe3O4@SA@DSPE-mPEG (CPB–Fe@SA@DSPE) was successfully synthesized by employing stearic acid (SA) as a hydrophobic shell and amphiphilic molecule DSPE-mPEG as a hydrophilic layer, enabling dual-modal fluorescence and magnetic resonance imaging (MRI) for tumor diagnostics. This platform demonstrates remarkable water dispersibility and stability, retaining 42.8% of its initial fluorescence intensity after 37 days in an aqueous medium. In addition, it exhibits superparamagnetic behavior with a saturation magnetization of 0.96 emu/g. In vitro experiments further confirmed its dual-mode imaging capability in tumor models, underscoring its potential in precision diagnostics. Therefore, this study provides a promising strategy to overcome the intrinsic limitation of PQDs in biomedical imaging and broadens the scope of PQD-based applications.
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Advanced Science
·
2026
·
IF 14.1
Daqing Xia,Lei Liu,Shuang Jin,Guangxu Fang,Chang Yu,Yunyun Wu,Lunli Xiang,Hongrui Zhu,Zhenqiang Wang,Jixi Zhang
Bioorthogonal catalysis holds great promise for precision cancer therapy, yet its clinical translation is critically hindered by the lack of reliable control over catalytic activity. Uncontrolled “always-on” catalysis or irreversible activation prevents timely termination, making it difficult to confine prodrug activation within a safe therapeutic window. To address this challenge, we developed an ultrasound-recharging-regulated closed-loop bioorthogonal system integrating on-demand activation, enhanced catalytic performance, and self-termination, enabling precise in vivo prodrug activation. Mechanistically, pyroelectric polarization of BaTiO 3 induces deposition of sub-nanometer Pd clusters whose catalysis is initially silenced by rapid oxidative passivation. Upon ultrasound stimulation, the piezoelectric BaTiO 3 core generates a built-in electric field that reduces surface Pd 2+ to catalytically active Pd 0 , thereby activating bioorthogonal reactions while promoting charge separation and reactive oxygen species generation. Simultaneously, piezoelectric screening charges accelerate interfacial electron transfer, significantly enhancing catalytic kinetics. Crucially, rapid repassivation after ultrasound cessation leads to complete catalytic deactivation, establishing a closed bioorthogonal cycle following a single stimulus. In vitro and in vivo studies demonstrate that the activated species induce immunogenic cell death while avoiding side effects from persistent catalysis. This work presents a safe, controllable, and efficient paradigm for bioorthogonal catalytic therapy, advancing its clinical translation.
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PubMed
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