Journal of Materials Chemistry C
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2025
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IF 5.1
XinLong Shang,Yang Li,Liang Chen,Quan Zhang,Leidang Zhou,Naizhe Zhao,Jinlu Ruan,Shiyi He,Fangbao Wang,Yapeng Zhang,Xiaoping Ouyang
Strategic incorporation of heterogeneous elements through doping has emerged as a prominent methodology for optimizing the performance of halide perovskites. However, due to inherent self-purification mechanisms during crystal growth, achieving desired doping levels usually requires substantially elevated feeding ratios of dopants in precursor. High feeding ratios notably induce burst nucleation during seed generation, especially for 2D perovskites, which presents particular challenges in single-crystal fabrication. Herein, we developed a fragments-induced crystallization (FIC) methodology for synthesizing individualized neodymium (Nd) doped seeds of 2D perovskites. This approach utilizes easily-produced undoped single crystals that are mechanically processed into crystalline fragments to create preferential nucleation sites. The FIC protocol enabled efficient production of monodisperse 1-3 mm-scale seeds and subsequent growth of centimeter-sized bulk single crystals. Successful Nd3+ substitution at Pb2+ sites with proportions varying from 0.04% to 3.43% was achieved. The doped perovskites showed a linear luminescent response up to 173 mGy s-1. Notably, they displayed differentially reduced decay lifetimes under excitation of ultraviolet light, α-rays, and γ-rays, signifying substantial potential for radiation discrimination. Nearly unchanged photoluminescence (PL) and X-ray luminescence (XRL) patterns indicated that Nd3+ worked not by forming new luminescent centers but by regulating luminescence of 2D perovskites. This study provides a methodology to effectively mitigate burst nucleation in heavily-doped precursors and to shorten the preparation Nd3+-doped single crystals. Doping with Nd3+ also shows a way to develop fast perovskite scintillators by tailoring their response time.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xun Xu,Xiaojie Ji,Yuankang Bao,Luliang Liao,Ping Li,Hao Zhang,Yaqiang Xie,Shuwang Duo
The efficiency of peroxymonosulfate (PMS)-based advanced oxidation processes for eliminating persistent organic pollutants is significantly limited by high residual contaminant levels and complex aqueous matrices. Developing robust and environmentally benign catalysts that can activate PMS while resisting matrix interference is therefore critical for practical wastewater treatment. Herein, we present a porous Co Mn bimetallic oxide (p-Co 1.2 Mn 1.8 O 4 ) integrating dual-metal active sites with mesoporous nanoconfinement, which simultaneously enhances PMS adsorption energy and enriches interfacial pollutant concentration. A direct electron transfer process (ETP) was enabled between the tetracycline (TC) pollutant (as an electron donor) and surface-bound PMS complexes (PMS ⁎ , as an electron acceptor) on p-Co 1.2 Mn 1.8 O 4 . This synergy enables a novelty nonradical electron-transfer pathway (ETP) between tetracycline (electron donor) and surface-bound PMS complexes (PMS ⁎ , electron acceptor), achieved nearly 100 % removal of TC within 15 min and increasing the pseudo-first-order constant from 0.121 to 0.348 min −1 over the non-porous sample. The p-Co 1.2 Mn 1.8 O 4 /PMS system also efficiently degrades binary pollutants and maintains high activity under varied pH, temperature, and complex matrices. This work provides mechanistic insights into how multi-scale structural synergy—at both atomic and nanoscale levels—in bimetallic oxide catalysts regulates PMS activation, offering a promising platform for practical water purification.
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Cell Reports Physical Science
·
2025
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IF 7.3
Marcin Giza,Fraser J. Angus,Wai Kin Yiu,Madeleine McRoberts,Benjamin Vella,Jingbo Wang,Aleksandra B. Djurišić,Graeme Cooke,Elisabetta Arca,Pablo Docampo
Utilizing layered perovskites (LPKs) to passivate the surface of perovskite materials is a successful strategy that currently yields state-of-the-art record-breaking devices. Nevertheless, it is not clear what happens to the LPK once other layers are processed on top. Furthermore, these LPKs can provide benefits in both p-type-intrinsic-n-type (P-I-N) and its inverted n-type-intrinsic-p-type (N-I-P) perovskite solar cell configuration, despite significant differences in their processing. In this work, we propose that this occurs due to a convergent optimization pathway, due to the thinning down and dissolution of the LPK during the deposition of subsequent layers. Here, we use X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) to demonstrate that for most of the “processing window” employed in the literature, the LPK is severely disrupted by the deposition of charge extraction layers. Indeed, the observation of highly crystalline layers via XRD correlates with a significant reduction in short-circuit current in solar cells, counteracting any other benefits.
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Aerosol and Air Quality Research
·
2025
·Vol. 25
·期 7
·1-10
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IF 2.5
Yu Peng,Shi Jing,Wan Hangjiang,Tang Zijian,Yuan Kangyu,Li Xi,Sun Yongjun,Zhang Xiao,Xu Yanhua
Background SrMnO 3 demonstrates high efficiency in degrading chlorinated volatile organic compounds (CVOCs). However, the accumulation of chlorine species and the loss of active sites limit the further enhancement of its catalytic performance. Purpose To improve the catalytic and chlorine poisoning resistance properties of SrMnO 3 -based catalyst. Methods A modified hydrothermal method was employed to synthesize a multi-metal-oxides catalyst based on SrMnO 3 with Ce introduced to lattice to increase surface defect density. Influences of catalyst dosage, relative humidity, pollutant concentration and airspeed on chlorobenzene (CB) removal efficiency were systematically investigated. Results The results revealed the great removal efficiency of the multi-metal-oxides catalyst based on SrMnO 3 with T 90 of 247 ℃, T 95 of 269 ℃, and the mineralization rate of 71%. The catalytic mechanism on the catalyst was explored through comprehensive characterizations and the potential degradation pathways of CB were inferred. Conclusion This work provides new insights into the design of metal-doped perovskite catalysts, highlighting the critical role of surface defects and oxygen vacancies in catalytic performance. Graphical
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Ke Zhao,Qixu Hu,Zhenwu Zhong,Jian Cheng,Yanyan Lu,Salman Riaz,Nasier Maihesumu,YaXin Wei,Hongyu Mi,Ying Qi,Peng Wei,Pengjun Zhao,Yahong Xie
The efficiency of carbon-based perovskite solar cells (C-PSCs) still significantly lags behind that of metal-based devices due to the substantial interfacial resistance and energy level mismatch between the carbon electrodes (CE) and the perovskite material. Herein, we present the construction of a carrier highway utilizing coal-derived multilayered graphene (MG) embedded with NiOx as a hole-transport layer (HTL). This approach aims to optimize energy level alignment and enhance interfacial contact, thereby improving the quality of the perovskite film. Due to its unique multilayer structure and abundant oxygen-containing functional groups, coal-derived MG synergized with NiOx HTL not only provides well-aligned energy band configurations that facilitate charge separation and extraction but also acts as a Lewis base to form coordination bonds with uncoordinated lead ions by sharing electron pairs, thereby reducing surface defects and minimizing recombination losses at the perovskite/CE interface, ultimately alleviating fill factor (FF) loss. As a result, the power conversion efficiency (PCE) of the FTO/SnO2/MAPbI3/MG + NiOx/Carbon structured device achieved 18.10%, representing a significant enhancement of 19.3% compared to that of 15.17% for the pristine device. This study presents a novel strategy for enhancing the overall performance of C-PSCs through the utilization of cost-effective and environmentally sustainable carbon functional materials derived from coal.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·138
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IF 5.4
Meng Weiqi,Zheng Ming,Zhang Xianfa,Guo Chuanyu,Xu Yingming,Huang Chaobo,Cao Zongshuang,Dong Xin,Huo Lihua,Cheng Xiaoli
SnO 2 mesoporous nanosheets with dominant the (001) crystal planes were synthesized via a mesoporous template-confined strategy. The cetyltrimethylammonium chloride used was both the mesoporous template and structure-directing agent, which enables the SnO 2 nanosheets to have a rich mesoporous structure and effectively promote the rapid diffusion of gaseous chlorine (Cl 2 ). Meanwhile, the abundant Sn unsaturated coordination sites on the (001) planes significantly enhance Cl 2 adsorption. The SnO 2 -(001) sensor achieved highly sensitive detection of Cl 2 at room temperature. It exhibited a high response of 408 toward 5 ppm Cl 2 , low practical detection limit (10 ppb), excellent selectivity and long-term stability. This breakthrough not only overcomes the high-temperature working limitation of traditional SnO 2 -based Cl 2 sensors. In addition, the sensor was employed to monitor Cl 2 emissions during the use of chlorine-containing disinfectants. Test results indicated that the Cl 2 concentration surpassed the safety threshold within 7-14 min of disinfectant application. It demonstrated its strong potential for practical applications. Furthermore, it lays the solid foundation for optimizing other metal oxide-based room temperature gas sensors. Graphical
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JOURNAL OF MOLECULAR MODELING
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2026
·Vol. 32
·期 3
·59
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IF 2.9
Shi Haiyang,Gan Guochao,Sun Shizheng,Han Xue,Ding Hao,Liu Shuang,Huang Yingzhou,Li Kai,Chen Weigen
Context The application of Raman spectroscopy for detecting furfural dissolved in transformer oil represents a highly promising approach for online monitoring for assessing the aging process of transformer insulating paper. Combining density functional theory (DFT) computational simulations with experimental measurements, the characteristic Raman spectra of the furfural molecule were analyzed, and the assignments of its key vibrational modes were determined. Furfural molecular clusters of varying sizes were constructed to investigate the effect of intermolecular hydrogen bonding forces on the Raman signals. The Raman spectra of furfural in solvents with different dielectric constants were measured. Comparison with simulation results indicates that enhanced solvent polarity induces a rearrangement of the electron cloud around the C=O bond, an increase in dipole moment, and a narrowing of the band gap. These changes thereby result in a red shift of the Raman peak position and an enhancement of scattering intensity. This work deepens the understanding, at the microscopic level, of the aggregation behavior of furfural in transformer oil and the influence of the solvent environment on its Raman characteristics. Methods All quantum chemical calculations were conducted using the Gaussian 16W program, and molecular structures were built using GaussView 6.0. The ground-state geometry of furfural was optimized using DFT with the B3LYP functional. The solvent effect caused by solvents with different dielectric constants was simulated and calculated using the polarized continuum model (PCM) of furfural. For all computations, the 6-311+G (2d, p) basis set was employed for C, H, and O atoms.
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Nature Photonics
·
2026
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IF 32.9
Cao Wei,Tian Sen,Zhong Chao,Qiu Li,Zeng Pan,Chen Zhiming,Zhang Xiancheng,Liu Haitao,Liu Kaitao,Li Jian,Sun Tao,Ning Pingfan,Zhang Delin,Wang Wenhong,Jiang Yong,Cao An,Li Liang,Liu Dilong,Nie Zhihong,Yang Fan,Li Fushan,Li Yue
High pixel resolution is critical for next-generation quantum-dot light-emitting diode (QLED) display technologies. Although advances in quantum-dot patterning have improved resolution, the reduction in pixel size often degrades emission efficiency and pattern uniformity. Here we develop a nanoimprint strategy using nanohole-array moulds to fabricate nano-QLEDs via capillary action-induced self-assembly of quantum dots. We realize pixels as small as sub-100 nm with ultrahigh pixel resolution up to 169,333 pixels per inch over an electroluminescent area of 4 mm 2 . Benefiting from the closely packed light-emitting quantum-dot monolayers, our nano-QLEDs show minimal performance degradation upon reducing the pixel size. Notably, the smallest red, green and blue nano-QLEDs maintain average external quantum efficiencies of 17.0%, 10.5% and 5.7%, respectively. We also demonstrate fabrication on flexible substrates as well as an active-matrix display by imprinting micro-QLEDs on a thin-film-transistor backplane, showing images and videos with a resolution of 100 pixels × 180 pixels. This work provides a powerful method for fabricating ultrahigh-resolution nano-QLED arrays with high external quantum efficiency for next-generation displays.
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Nature Communications
·
2026
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IF 18.1
Wang Jiachuang,Wei Shuai,Qin Nan,Tao Tiger H.
Compound eyes feature unique optical structures and high-efficiency image processing. The opto-olfactory nervous system of Drosophila has the characteristics of lightweight and low power consumption. Significant efforts have been dedicated to the design and manufacturing of artificial compound eye system. However, it is still challenging to construct a bionic visual-olfactory compound eye microsystem with sensitive photoelectric response and accurate olfactory perception in insect-scale, mimicking the biological multimodal fusion decision-making mechanism. Here, we report a miniature apposition compound eye that integrates 1027 ommatidia on 1.5×1.5 mm 2 by manufacturing a bionic micro-lens array onto flexible photodetectors via femtosecond laser two-photon polymerization, further construct the colorimetric olfactory sensor array through inkjet printing to achieve integrated perception of vision and smell. The bionic compound eye (bio-CE) enables wide field-of-view imaging (azimuth angle 180°), natural interocular isolation, a 1 kHz flicker fusion frequency and color response to various hazardous chemicals, resulting in high sensitivity to moving objects and rapid response to environmental gases. The microsystem can serve as a wide-angle close-range obstacle avoidance detector and a device for monitoring visual and olfactory information of moving targets. The insect-scale bionic apposition compound eye shows great potential applications in unmanned platform navigation and bionic robot intelligence.
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Small
·
2026
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IF 12.1
Huimin Su,Shuguang Zhang,Kangxin Shen,Qi Zhou,Jintao Xu,Jiale Huang,Yutian Liu,Jiajun Lin,Luyu Liu,Linfeng Lan,Junbiao Peng
Tin (Sn)-based halide perovskites are promising for the semiconductor layer of thin-film transistors (TFTs) owing to their intrinsic p-type conductivity and environmental friendliness relative to lead-based counterparts. However, Sn 2+ oxidation, poor film morphology, and high defect density severely limit their performance. Herein, cyanuric fluoride (Cy-F), a multifunctional additive, is introduced into 2D phenylethylamine iodide (PEA 2 SnI 4 ) to improve film quality and device performance. Cy-F strongly interacts with PEA + and Sn 2+ , enhancing PEA + anchoring, suppressing Sn 2+ oxidation, reducing pinholes, and passivating defects, thus forming uniform, well-oriented films. With optimized 12 vol% Cy-F doping, the TFT achieves a mobility of 1.88 cm 2 V −1 s −1 (more than one order higher than the pristine device's 0.15 cm 2 V −1 s −1 ). Concurrently, interface trap density decreases from 9.8 × 10 12 to 1.8 × 10 12 cm −2 eV −1 , significantly reducing the sweep hysteresis. Operational stability tests show the doped TFT retains 90% of initial drain current under negative bias stress for over 2000 s, with noticeable current recovery later. This work demonstrates Cy-F as an effective additive for optimizing film morphology and charge transport, offering a new strategy for high-performance, stable Sn-based perovskite TFTs.
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Photonics
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2026
·Vol. 13
·期 1
·89
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IF 1.9
Yingying Xu,Xiaomeng Xue,Lixiong Wu,Zhikai Gan,Menglu Chen,Qun Hao
Multispectral infrared detection plays a crucial role in advanced applications spanning environmental monitoring, military surveillance, and biomedical diagnostics, offering superior target identification accuracy compared to single-band imaging techniques. In this work, we synthesized four distinct bands of colloidal quantum dots (CQDs)—specifically, a cut-off of 1.3 µm with PbS CQDs and 1.8 µm, 2.6 µm, and 3.5 µm with HgTe CQDs—and employed them to construct planar multiband infrared photodetectors. The device exhibited a clear photoresponse at room temperature from 0.8 µm to 3.5 µm, with responsivity of 5.39 A/W and specific detectivity of 2.01 × 1011Jones at 1.8 µm. This materials–device co-design strategy integrates wavelength-selective CQD synthesis with planar pixel-level patterning, providing a versatile pathway for developing low-cost, solution-processed, multiband infrared photodetectors.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.4
Xiao Wang,Yu Zhang,Donghui Wang,Yongqi Duan,Yuekai Zhao,Tao Xue,Kunping Guo,Jin Huang,Fanghui Zhang
In inorganic perovskite solar cells (IPSCs), interfacial stability and defect passivation remain key challenges for achieving higher photovoltaic performance. Here, we propose a buried interfacial molecular engineering strategy using pyridine-3,5-dicarboxylic acid (PDC) as a bifunctional passivator to simultaneously improve crystallinity and suppress defects. The carboxylic groups of PDC chemically anchor onto the TiO 2 surface through esterification with surface hydroxyls, forming a robust interfacial layer, while the nitrogen atom in the pyridine ring coordinates with undercoordinated Pb 2+ ions in the perovskite absorber. This dual interaction effectively passivates defects on both TiO 2 and perovskite surfaces, facilitating efficient electron extraction, improving film crystallinity, and suppressing nonradiative recombination. As a result, the PDC-modified devices deliver a significantly enhanced power conversion efficiency of 14.05%, compared to 9.81% for the control devices, representing an improvement of over 43% under standard AM 1.5G illumination. In addition, the PDC-treated devices exhibit markedly improved environmental and mechanical stability, retaining approximately 90% of their initial efficiency after 500 h of continuous operation without encapsulation. This work demonstrates an effective interfacial molecular engineering strategy for simultaneously boosting efficiency and long-term stability in inorganic perovskite solar cells.
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