JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Lei Meng,Bin Yao,Yongfeng Li,Zhanhui Ding,Zhenyu Xiao,Kaisi Liu,Gang Wang
The back contact adhesion is the important factor of the microstructural performance which can determine the optoelectronic properties of the kesterite-based solar cells. Here, we present a rational and effective strategy to significantly enhance the back contact adhesion of Cu 2 (Zn,Cd)Sn(S,Se) 4 (CZCTSSe) absorber layers by insetting the appropriate thickness carbon-doping CZCTS thin films . We chose the oleylamine as the carbon-doping reagent which can generate a small amount of carbon in the annealing process . The suitable thickness carbon-doping CZCTS films can significantly change the crystal growth mechanism of CZCTSSe absorber layers, and eliminate the holes in the back contact. The efficiency of CZCTSSe solar cells fabricated by insetting the appropriate thickness carbon-doping CZCTS films is above 7%, and shows the excellent repeatability and long-term air stability compared with the control devices.
研究领域:
材料科学
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光伏技术
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半导体物理
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表面与界面工程
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无机功能材料
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Cuizhen Yang,Tianyi Wang,Tingyao Wang,Haiyan He,Dongming Liu,Huajie Huang
The rapid development of direct formic acid fuel cell (DFAFC) and direct methanol fuel cell (DMFC) technologies urgently needs to explore efficient and multifunctional electrocatalysts with acceptable costs. In this work, we introduce a convenient soft-chemistry method for the bottom-up synthesis of two-dimensional (2D) ultrathin PdMo bimetallene in situ immobilized on reduced graphene oxide nanosheets (PdMo/RGO) by a robust stereoassembly procedure. The as-derived PdMo/RGO nanoarchitecture possesses a range of unique structural advantages tailored for anodic fuel cell systems , such as numerous exposed Pd atoms, bimetallic alloy and strain effects, stable 2D/2D heterointerfaces, and good electrical conductivity . As a result, the PdMo/RGO nanoarchitecture exhibits a large electrochemically active surface areas of 122.2 m 2 g −1 , a high mass activity of 994.8 mA mg −1 , as well as reliable long-term durability towards the formic acid oxidation reaction. Meanwhile, the PdMo/RGO electrocatalyst also displays exceptional electrocatalytic methanol oxidation performance with a mass activity of 1605.3 mA mg −1 in alkaline medium, which significantly surpasses that of conventional Pd nanoparticle catalysts loaded on reduced graphene oxide , carbon nanotube , and carbon black matrices.
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高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Qingkun Kong,Shuchao Jiang,Zhongyi Wang,Xin Xu,Ruiling Zhang,Guoqing Zhu,Junxia Yang,Peigeng Han,Runze Liu,Feng Hong,Nengchao Luo,Junsheng Chen,Bin Yang
Metal halide perovskite materials with excellent carrier transport properties have been regarded as a new class of catalysts with great application potential. However, their development is hampered by their instability in polar solvents and high temperatures. Herein, we report a solution-processed Cs2MoCl6 perovskite nanocrystals (NCs) capped with the Mo6+, showing high thermostability in polar solvents. Furthermore, the Pd single atoms (PdSA) can be anchored on the surface of Cs2MoCl6 NCs through the unique coordination structure of Pd–Cl sites, which exhibit excellent semihydrogenation of different alkyne derivatives with high selectivity at full conversion at room temperature. Moreover, the activity could be improved greatly under Xe lamp irradiation. Detailed experimental characterization and DFT calculations indicate the improved activity under light illumination is due to the synergistic effect of photo-to-heat conversion and photoinduced electron transfer from Cs2MoCl6 to PdSA, which facilitates the activation of the C≡C group. This work not only provides a new catalyst for high selective semihydrogenation of alkyne derivatives but also opens a new avenue for metal halides as photothermal catalysts.
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PubMed
高影响因子
Journal of Energy Storage
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2025
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IF 9.8
Liwei Yang,Xinshuai Yan,Jianguo Duan,Xiaoxiao Huang,Qing Ma
As an intermittent energy source, the efficient utilization of solar energy relies on stable and efficient energy conversion and storage technologies. Phase change materials (PCM) have become ideal candidate materials for solar thermal storage due to their high energy storage density and reversible cycling characteristics. However, traditional organic solid-liquid phase transition materials are prone to leakage during the phase transition process and have a relatively low photothermal conversion efficiency, which limits their practical application. To address the above issues, this study designed a novel composite phase change material (CPCM). By collaboratively loading nanomaterials of different dimensions, such as copper nanowires (CuNWs) and MXene, into a graphene porous framework and encapsulating paraffin (PW), the reduced graphene oxide (rGO)/ CuNWs/MXene/PW (rGCuMPW) composite material was successfully constructed. Among them, the high light absorption capacity of MXene, combined with the excellent thermal conductivity of CuNWs, significantly improved the photothermal conversion efficiency (92.11 %) and thermal energy storage density (ΔH = 165.77 J·g −1 ) of the material. In addition, this material still maintains a stable phase transition enthalpy value after 100 cycles, demonstrating excellent cycle stability and reusability. The CuNWs-MXene synergistic modification strategy proposed in this study not only effectively reduces the leakage rate of organic PCM, but also significantly improves the performance of photothermal conversion and thermal energy storage, providing a new type of high-performance CPCM for the efficient utilization of solar energy.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Jianan Huang,Xianlin He,Ruqi Zhang,Zixuan Ding,Yanting Song,Haimei Yang
Accurate identification of multiple teas based on the difference in their contents and species of metal ions is vital in food inspection and public health. However, achieving accurate sensing from one material with various transduction signals and excellent anti-interference remains a challenge. Herein, a four-channel sensing platform was constructed by combining with four water-soluble InP/ZnS QDs with independent emission. The fluorescence intensities of the four water-soluble InP/ZnS QDs change in different degrees owing to the synergistic coordinative effect between metal ions and ligands. Interestingly, the multi-channel sensing platform allows the qualitative performance of metal ions with excellent anti-interference, high sensitivity, and high accuracy in binary and ternary mixtures. Moreover, the multi-channel fluorescent array exhibited a universality-powerful capability for identifying five teas with satisfactory results. The universal application for detecting Cr 6+ , Hg 2+ , and Cu 2+ in various tea drinks was demonstrated with excellent recovery, indicating a promising potential application in food safety.
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高影响因子
APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Qi Zhou,Yanbin Wang,Qingqing Liu,Insub Noh,Hyung Do Kim,Yuhao Huang,Hideo Ohkita,Yang Sheng,Biaobing Wang
Quenching mechanisms of AIZS and AIZS@SiO 2 core–shell nanoparticles were investigated. • Thermal quenching was mainly caused by the decomposition of organic ligands. • Chemical quenching was mainly resulted from the destruction of crystal structure. • Fluorescent quenching of hierarchical porous micro-nano surfaces was obviously improved. • Micro-nano hierarchical porous surfaces showed an application in information encryption field. Luminescence quenching is a common but undesirable phenomenon to quantum dots (QDs). However, systematic studies of quenching mechanism under harsh conditions are lacking. Herein, firstly, temperature-dependent PL intensity of Ag-In-Zn-S (AIZS) and their monodispersed silica-coated core–shell nanoparticles (AIZS@SiO 2 ) was conducted through thermal cycling experiments. PL intensity of AIZS QDs sharply decreased at 150 °C ( T q ), meanwhile a broad peak at 2932 cm −1 ascribed to C–H unit was detected. With continuously increasing temperature to 300 °C, this vibration band became stronger correspondingly, and PL intensity became weaker and weaker, providing direct support that thermal quenching was caused by decomposition of organic ligands. As expected, T q of AIZS@SiO 2 nanoparticles was increased to 250 °C owing to the thermal shielding of silica. Different from heating treatment, corrosive liquid seriously damaged crystal structure of AIZS QDs. XRDs pattern of AIZS@SiO 2 nanoparticles also became irregular after a longer treatment time, alkaline molecules still contacted core through mesoporous. Based on these findings, micro-nano hierarchical porous surfaces were constructed to trap air pockets for isolating luminescent component from harsh environments. With the helpful of thermal insulting property of air and silver mirror reaction, PL intensity was nearly unchanged even the functional surfaces were kept at 300 °C for 2 h and immersed into the strong alkaline solution for 24 h. The highly stable hierarchical porous surfaces showed good potential application in anti-counterfeiting and information encryption fields. Overall, this work provided theoretical insights in quenching mechanism of QDs and design guidance for QD with excellent robustness. Download: Download high-res image (128KB) Download: Download full-size image
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.5
Chaoyue Zhang,Mingrui Wang,Xinyue Han,Zheng Shen,Hongying Zhuo,Tianyu Zhang,Xiaofeng Yang,Yanqiang Huang
Metastable hcp-Ni enables the synthesis of highly dispersed and stable Ni/Al 2 O 3 catalyst • Highly dispersed Ni/Al 2 O 3 catalyst delivers 75.7% CO 2 conversion and 100-h stability • Original hcp-Ni particles spontaneously transform into fcc-Ni clusters of ∼2.3 nm • Small Ni clusters promote CO 2 methanation via monodentate formate intermediate • Fcc-Ni precursors undergo severe sintering to ultra-large and less-active particles Ni-based catalysts are promising candidates for CO 2 methanation while their practical applications are limited by particle agglomeration and deactivation. Here, we report a facile strategy to fabricate a highly dispersed and stable Ni/Al 2 O 3 catalyst using metastable hexagonal close-packed (hcp)-Ni as a precursor. Comprehensive characterization reveals that the initial hcp-Ni (∼12.0 nm) spontaneously transforms into uniform face-centered cubic (fcc)-Ni nanoparticles (NPs) of ∼2.3 nm on γ -Al 2 O 3 support during H 2 reduction and CO 2 methanation reaction. The small Ni particles contribute to improved Ni 0 proportion on catalyst surface. In contrast, the original fcc-Ni precursors are prone to sintering, forming ultra-large and less-active Ni aggregates. The highly dispersed Ni NPs derived from hcp-Ni enhance CO 2 adsorption-activation and facilitate the formate-mediated reaction pathway. The resulting hcp-Ni/Al 2 O 3 catalyst delivers a CO 2 conversion of 58.2% with a CH 4 selectivity of 85.4% at 460 °C and endows robust stability exceeding 100 hours. The optimal CH 4 space time yield reaches 179.5 mmol·g cat −1 ·h −1 , exceeding 2.4 times that of fcc-Ni/Al 2 O 3 . This work establishes a reliable synthesis paradigm rooted in crystal-phase regulation, enabling the manufacture of highly dispersed and stable Ni-based catalysts for efficient CO 2 methanation. Manufacturing Highly Dispersed and Stable Ni/Al 2 O 3 Catalysts from hcp-Ni for Enhanced CO 2 Methanation Download: Download high-res image (221KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Feixia He,Qingkai Zhang,Kaiyu Yang,Xuwen Chen,Bowen Chen,Hailong Yang,Haolin Luo,Weiguo Chen,Hailong Hu,Fushan Li
The adopted NMAI serves multifunctions: it barricades water/oxygen against ambient degradation, passivates defects to suppress non-radiative recombination, and tunes interfacial energy alignment to balance carrier dynamics. • High luminescence and air stability are simultaneously achieved in perovskite quantum dots via one additive, with PLQY reaching 87.9% and ambient stability over twice the reference. • Ambient-air fabricated NIR-PQLEDs exhibit a peak EQE of 16.15% and T 50 over 140 min, showing over 3-fold EQE and 4-fold operational lifetime relative to control devices. Near-infrared perovskite quantum-dot light-emitting diodes (NIR-PQLEDs) are promising for broad application prospects such as biological imaging and optical communication. However, due to the influence of water and oxygen, the stability of perovskite quantum dots (PQDs) in air environments is usually poor, which hinders their industrial applications. In this work, by introducing multifunctional ligand 1-naphthylmethylammonium iodide (NMAI) for surface modification of PQDs, we successfully realized high-efficiency and stable NIR-PQLEDs fabricated under ambient air conditions. Here, NMAI mainly possesses the following functions: 1) Its hydrophobic aromatic naphthalene group enhances the surface hydrophobicity of PQDs and contributes to a more compact moisture-resistant ligand shell, thereby effectively suppressing water and oxygen erosion under ambient air conditions. 2) The synergistic effect of NMA + cations and I − anions achieves efficient defect passivation, thus suppressing non-radiative recombination. 3) The inherent dipole characteristic of NMAI reconstructs the surface of PQDs, optimizing interfacial energy-level alignment and balancing carrier dynamics. Consequently, the photoluminescence quantum yield (PLQY) of PQD film increases from 74.4% to 87.9%, with remarkably enhanced stability in air environment. Benefiting from this strategy, air-processed NIR-PQLEDs achieve a peak external quantum efficiency (EQE) of 16.15%, representing a more than threefold enhancement compared to the pristine device. Meanwhile, the operational half-lifetime (T 50 ) is extended by more than fourfold to over 140 min. This work provides a novel strategy for air-compatible, low-cost, and scalable fabrication of high-performance NIR-PQLEDs, which is of great significance for advancing their optoelectronic applications in the future.
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高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Shuan Tang,Jiawen Luo,Yulu Zhao,Kehao Zhang,Cheng Fang,Mingliang Li,Gang Shao,Hailiang Wang,Hongliang Xu,Hongxia Lu
In this study, a novel medium-entropy perovskite Cs(Pb 1/4 Yb 1/4 Mn 1/4 Ca 1/4 )Cl 3 quantum dots (QDs) were successfully synthesized via high-energy ball milling method. By introducing equimolar amounts of Mn 2+ , Yb 3+ and Ca 2+ cations, the lead content was reduced to 25%. This design of a medium-entropy structure not only preserves the fundamental perovskite lattice framework of CsPbCl 3 , but also introduces abundant intrinsic defects and localized structural distortions. The synthesized medium-entropy QDs exhibit unique dual-band luminescence properties at room temperature: a visible emission centered at ∼600 nm and a near-infrared (NIR) emission at ∼980 nm, attributed to the 4 T 1 → 6 A 1 transition of Mn 2+ and the f-f transition of Yb 3+ , respectively. The entropy-increasing strategy effectively suppresses non-radiative recombination, stabilizes the crystalline structure of the QDs, thereby significantly enhances both the luminescence properties and stability. Specifically, the QDs achieve a photoluminescence quantum yield (PLQY) of 13.22%, a visible fluorescence lifetime of 108.01 μs, and an outstanding NIR fluorescence lifetime of up to 2.20 ms. After 80 days of storage in ambient air at room temperature and atmospheric pressure, the QDs. still retain 77% and 86% of their initial visible and NIR luminescence intensities, respectively. This work provides a feasible new strategy for developing highly efficient and stable multispectral luminescent medium-entropy perovskite materials, expanding their application potential in biomedical and sensor fields.
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高影响因子
Advanced Optical Materials
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2026
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IF 7.2
Di Wen,Xiaotong Yu,Hao He,Yuan Gao,Kun Cao,Rong Chen
Achieving stable light emission under large, repeated, and multiaxial deformation remains challenging due to the intrinsic brittleness and environmental sensitivity of emissive materials. Here, we report a region-selective fabrication strategy that integrates block copolymer (BCP)-guided emissive-domain formation with selective atomic layer infiltration (ALI). This strategy enables the construction of stretchable rigid-soft luminescent films with mechanically compliant matrices and locally protected emissive domains. Block-copolymer self-assembly defines spatially isolated emissive domains, while ALI selectively forms nanoscopic oxide armors only within emitter-containing regions, reinforcing the domains without stiffening the surrounding soft matrix. Finite-element analysis and strain-dependent optical measurements indicate that applied strain is predominantly accommodated by the soft matrix, leaving the rigid emitter domains effectively unstrained. The resulting stretchable luminescent films maintain nearly unchanged optical performance under up to 100% multiaxial strain. The region-selective construction strategy provides a general design route for mechanically robust luminescent systems.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 28
·e73876
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IF 2.3
Tao Liu,Huichao Zhang,Bo Huang,Shitong Li,Bin Liu
Mn 2+ -doped perovskite nanocrystals (NCs) have attracted extensive research interest and have been synthesized with sizes in the strong confinement regime. Nevertheless, the size of the doped NCs is still not as small as that of undoped perovskite NCs. To address this, we develop a ligand-assisted reprecipitation method incorporating ultrasonication to synthesize Mn 2+ -doped CsPb(Cl/Br) 3 NCs. The obtained spherical NCs have an average size of 3.1 nm and exhibit orange photoluminescence originating from the 4 T 1 to 6 A 1 transition of Mn 2+ . The luminescent properties correlate with the volume ratio of MnCl 2 to PbBr 2 precursors. Increasing the ratio enhances the Mn 2+ -related emission, while excessive doping leads to photoluminescence quenching. When the precursor ratio is reduced to 1:1, the NCs exhibit both intrinsic exciton and Mn 2+ -related emission, with some particles adopting cubic or rod-like morphologies. Prolonged ultrasonic treatment does not significantly shift the emission peak of the NCs, but promotes superlattice assembly in small-sized NCs, showing a center-to-center separation of 4.2 nm. Subsequently, altering the precursor addition sequence to introduce MnCl 2 last during ultrasonic preparation yields simultaneous formation of spherical and cubic NCs. Finally, post-synthesis doping of Mn 2+ is achieved. Formation of small spherical NCs confirms hypothesis that MnCl 2 induces morphological transformation of NCs. Graphical Ultrasonication-assisted ligand-assisted reprecipitation delivers 3.1 nm Mn 2+ -doped CsPb(Cl/Br) 3 nanocrystals with orange emission from the Mn 2+ 4 T 1 → 6 A 1 transition.
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·124155
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IF 7.5
Jiawei Deng,Xue Zhu,Sai Teng,Dan Li,Changxin Tang,Tao Wang,Jiren Yuan,Feigao Xu
This study investigates the efficacy of magnetic Fe 3 Se 4 as a catalyst in the photo-Fenton oxidation process for degrading tetracycline hydrochloride (TCH), a widely used antibiotic posing significant environmental risks due to its persistence in aquatic systems. Fe 3 Se 4 was synthesized via a one-pot hot-melt method and characterized using X-ray diffraction, Raman spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The catalyst demonstrated exceptional performance under visible light irradiation, achieving a 92.5% removal rate of TCH (30 mg L −1 ) within 90 min under optimal conditions (pH = 3.2, H 2 O 2 = 10 mM, catalyst dosage = 0.2 g L −1 , 25 °C). The degradation kinetics followed pseudo-first-order behavior, with a mineralization rate of 34.1%. Mechanistic studies revealed that hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) played pivotal roles in the degradation process, facilitated by the synergistic interplay between Fe and Se species. Density functional theory (DFT) calculations indicated that the (310) crystal plane of Fe 3 Se 4 exhibited strong adsorption energy for H 2 O 2 , promoting O-O bond cleavage and •OH generation. High performance liquid chromatography–mass spectrometry analysis identified intermediate products and proposed three degradation pathways, and ECOSAR modeling indicated reduced ecotoxicity of most intermediates. Additionally, Fe 3 Se 4 exhibited broad applicability, effectively degrading other organic pollutants such as methylene blue and rhodamine B. These findings highlight Fe 3 Se 4 as a promising, environmentally benign catalyst for advanced oxidation processes, offering a sustainable solution for antibiotic-contaminated wastewater treatment.
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高影响因子
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