Journal of Physical Chemistry C
·
2025
·
IF 3.2
P. H. Shi,W. J. Zhai,Y. J. Ma,W. H. Zheng,J. S. Li,L. Huang,Y. R. Ren,X. Peng,L. Lin,Z. B. Yan,J.-M. Liu
The tin halide perovskites as a lead-free alternative for optoelectronics have attracted considerable attention due to their remarkable optoelectronic performance and reduced environmental toxicity. However, a major challenge remains regarding the stability issue, primarily due to the oxidation of Sn2+ to Sn4+ under ambient conditions, which leads to material degradation and poor long-term performance. Herein, we report the enhanced performance of the FASnI3 photodetector by incorporating 4-trifluoromethyl benzyl ammonium iodide (TFMBAI) into the precursor solution. Under a light intensity of 5 mW/cm2, the responsivity at 685 nm increases to 0.325 A·W–1, achieving an enhancement of nearly 57.5 times compared with the unmodified sample. Additionally, the device exhibits a broadband photoresponse ranging from 415 to 980 nm. By optimizing the addition of TFMBAI, we have reduced the proportion and defect states of Sn4+, successfully promoted the oriented crystal growth and passivated defects, and achieved a more stable, uniform, and pinhole-free perovskite film, thereby enhancing both carrier mobility and performance stability. Our results demonstrate the great potential of TFMBAI for applications in nontoxic and highly stable tin halide perovskite photodetectors.
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CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Junfeng Liu,Liying Zhang,Haodi Ma,Haoyang Sun,Shu-ai Ge,Jieyi Liu,Shengdi Fan,Chunshan Quan
The limited membrane permeability and bacterial resistance pose significant challenges in the management of intracellular drug-resistant bacterial infections. To overcome this issue, we developed a bacterial-targeted drug delivery system based on quaternary ammonium chitosan-modified mesoporous silica nanoparticles (MSN-NH 2 -CFP@HACC) for the treatment of intracellular Methicillin-resistant Staphylococcus aureus (MRSA) infections. This system utilizes amino-functionalized mesoporous silica nanoparticles to efficiently load cefoperazone (CFP), and the nanoparticles' surface is coated with 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) to target bacteria and enhance macrophage uptake. The findings indicate that MSN-NH 2 -CFP@HACC nanoparticles are efficiently internalized by macrophages, demonstrate accelerated drug release in acidic environments, and exhibit enhanced antibacterial properties, effectively suppressing the proliferation and intracellular escape of MRSA. Moreover, HACC enhances the bacterial capture ability of the nanoparticles and reduces resistance by disrupting bacterial membrane structures and inhibiting bacterial β-lactamase activity. In a murine model of MRSA bacteremia, MSN-NH 2 -CFP@HACC exhibited remarkable antibacterial efficacy and significantly attenuated severe inflammatory responses. In conclusion, MSN-NH 2 -CFP@HACC represent a promising antibiotic delivery system with exceptional antibacterial efficacy and favorable biocompatibility, thus presenting a novel strategy for addressing intracellular drug-resistant bacterial infections and demonstrating significant potential for clinical application.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Qi Fu,Jiaxin He,Jiajun Zheng,Yanjun Xing,Qiuxiang Wang,Jiaxing Xiong,Wendong Zhu,Rong Xuan,Anan Fu,Xinlei Gan,Like Huang,Xiaohui Liu,Yuejin Zhu,Jing Zhang
Silver nanowire (Ag NW)-based transparent back electrodes prepared via all solution-process are promising for bifacial and semitransparent perovskite solar cells (PSCs). However, the inadequate electrical contact between the silver nanowires themselves and the contact with substrate leads to reduced overall solar cell performance; meanwhile, serious corrosion of Ag NW in ambient environment restricting the further applications. In this work, polyvinylpyrrolidone (PVP) as a binder in Ag NW electrode significantly enhances the conductivity and transparency at the same time improving the interface electric contact. The PSC with PVP modified Ag NW electrode demonstrated frontside and backside efficiency approaching 18 % and 14.1 % (AM1.5, 1 Sun), respectively, which achieves 82 % efficiency with normal Ag device and bifacial factor of 79 %. The long-term storage stability of PSC is also improved by PVP protection. The final device structure is ITO/Ni O x /MeO/(FA0.92MA0.08)0.95Cs0.05Pb(I0.9Br0.1)3/PEAI/PC61BM/BCP/ Ag NW. This work highlights the method to fabricate robust transparent Ag NW electrode for bifacial perovskite solar cells .
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CELL BIOCHEMISTRY AND FUNCTION
·
2024
·Vol. 42
·期 2
·e3965
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IF 2.8
Nan Liu,Yan-yan Yao,Jin Zhang,Ji-guo Zhang,Chao Wu,Du-juan Ouyang,Chang-yong Zou,Zhen-qiang Yang,Ji-xiang Li
A highly efficient chlorobenzene-degrading strain was isolated from the sludge of a sewage treatment plant associated with a pharmaceutical company. The strain exhibited a similarity of over 99.9% with multiple strains of Paenarthrobacter ureafaciens . Therefore, the strain was suggested to be P. ureafaciens LY. This novel strain exhibited a broad spectrum of pollutant degradation capabilities, effectively degrading chlorobenzene and other organic pollutants, such as 1, 2, 4-trichlorobenzene, phenol, and xylene. Moreover, P. ureafaciens LY co-metabolized mixtures of chlorobenzene with 1, 2, 4-trichlorobenzene or phenol. Evaluation of its degradation efficiency showed that it achieved an impressive degradation rate of 94.78% for chlorobenzene within 8 h. The Haldane–Andrews model was used to describe the growth of P. ureafaciens LY under specific pollutants and its concentrations, revealing a maximum specific growth rate ( μ max ) of 0.33 h −1 . The isolation and characterization of P. ureafaciens LY, along with its ability to degrade chlorobenzene, provides valuable insights for the development of efficient and eco-friendly approaches to mitigate chlorobenzene contamination. Additionally, investigation of the degradation performance of the strain in the presence of other pollutants offers important information for understanding the complexities of co-metabolism in mixed-pollutant environments. Significance statement The degradation efficiency of chlorobenzene in waste gas is difficult to deal with its high volatility and molecular stability. However, the research on treatment technology of typical chlorine-containing volatile organic compounds is still concerned. A highly efficient chlorobenzene-degrading strain, identified as Paenarthrobacter ureafaciens LY, was successfully isolated from the sludge of a sewage treatment plant associated with a pharmaceutical factory. Its degradation efficiency was evaluated and found that it achieved an impressive degradation rate of chlorobenzene within 8 h. We believe that our study makes a contribution to the insight into solving the pollution of chlorobenzene.
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Nanoscale
·
2024
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IF 5.8
Zhiqiang Ming,Siyao Li,Xinyi Luo,Siman Liu,Danliang Zhang,Xiaoli Zhu,Anlian Pan,Xiao Wang
Quasi-2D perovskites have emerged as a promising candidate material for displays owing to their high photoluminescence quantum yields and low-cost solution synthesis. However, achieving pure red quasi-2D perovskite films with luminescence centered at 630 nm and a narrow emission band presents a critical challenge for high-definition displays. Herein, by incorporating 18-crown-6 as additives that simultaneously passivate defects and regulate phase distribution, full iodine-based quasi-2D perovskite films with a single red emission peak and spectral stability are designed. Additionally, through the introduction of an appropriate amount of chlorobenzene and enhancement of annealing temperature, resulting in a narrower phase distribution, the full width at half maximum (FWHM) of the emission peak is significantly reduced. After optimization of the process, we fabricated quasi-2D perovskite films with pure red emission, which exhibited a PL peak at 627.9 nm and a narrow FWHM of 45.1 nm. Based on these pure red perovskite films, diverse complex patterns such as fluorescent anti-counterfeiting labels are implemented for data storage and information encryption. This study provides an effective approach toward developing quasi-2D perovskites with high color purity for high-definition purposes.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Shuang Wei,Kexin Li,Sheng Zhong,Ruirui Zhang,Guosheng Wang,Ruixia Liu
Selective conversion of inert C–H bonds in alkanes into high-value-added functional groups (alcohols, ketones, carboxylic acids, etc.) plays a vital role in establishing a green and sustainable chemical industry. Catalytic selective oxidation of cyclohexane to KA oil (cyclohexanol and cyclohexanone) is a typical representative of alkane functionalization. In this work, hollow cage-like Co3O4 (Co3O4-C) and particle Co3O4 (Co3O4-P) were synthesized by calcining two types of Prussian blue analogues (PBAs), which were used to catalyze the selective oxidation of cyclohexane. The Co3O4-C predominantly exposed (311) crystal plane is easier to adsorb cyclohexane than Co3O4-P, which is beneficial to shorten the induction period, accelerate the reaction rate, and improve the conversion. Consequently, Co3O4-C displayed a 10% conversion of cyclohexane within 1 h, and the KA oil selectivity reached 90%. The Co3O4-P exposed (220) crystal plane has a higher molar percentage of oxygen vacancies and more active oxygen species, as well as a strong cyclohexanone adsorption capacity, which is conducive to the deep oxidation of cyclohexanone to adipic acid and other diacid products. The mechanism analysis of cyclohexane oxidation catalyzed by PBA-based Co3O4 shows that it exemplifies the feasibility to tailor the surface of catalysts by modulating the PBAs, which ultimately influences their reaction performance for accelerating the reaction and maintaining high cyclohexane conversion and KA oil selectivity.
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OPTICAL MATERIALS
·
2024
·
IF 3.8
Qian Qiao,Tongge Zhao,Jian Zheng,Huiting Yin,Yuan Zhang,Jinhao Zang,Xun Yang,Haoyu Li,Taotao Rao,Xuan Yu,Xiaoming Yu
Self-powered poly (3-hexylthiophene)/zinc oxide (P3HT/ZnO) heterojunction ultraviolet photodetectors decorated by silver nanoparticles (Ag NPs) were fabricated by sol-gel and spin-coating techniques. The ultraviolet photoresponse performance of the P3HT/ZnO heterojunction photodetectors influenced by the position of plasmonic Ag NPs was investigated. The responsivity and detectivity of the P3HT/Ag/ZnO photodetector with placed Ag NPs at the interface of ZnO and P3HT layers enhanced to 1.92 and 1.15 times compared to the reference devices. When the Ag NPs embedded into ZnO layer , the responsivity, detectivity and external quantum efficiency were 16.42 mA/W, 5.97 × 10 11 Jones, and 5.36 %, respectively, which were 5.77 times, 4.64 times and 5.77 times to that of the pristine P3HT/ZnO photodetector. The enhancement mechanism of plasmonic metallic nanoparticles to the performance of the photodetectors was discussed in details. This study presents a simple route to high performance self-powered photodetectors.
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ACS Photonics
·
2024
·
IF 6.5
Wen Huang,Huixing Zhang,Jiawei Tang,Zhengjian Lin,Tenglong Guo,Yangming Zhou,Shaojie Jiang,Pengjie Hang,Mingzhi Jiao,Chen Zhu,Lei Wang,Deren Yang,Xuegong Yu,Xing’ao Li
Recently, self-powered optoelectronic synaptic devices have attracted great attention due to their bias-free and self-rectifying properties for future computing systems. However, high energy consumption may still be required to generate optical signals for the stimulation of the systems. In this work, self-powered optoelectronic synaptic devices are fabricated based on triple mixed cation perovskites with excellent synaptic stability. Various synaptic functions are mimicked in these devices, which are stimulated by a fully visible light spectral range. These devices demonstrate the lowest energy consumption density and the best consistency properties of all reported self-powered optoelectronic synaptic devices to date. Color classification and speech recognition are successfully implemented with high accuracy in these systems. The results significantly promote the development of self-powered systems in neuromorphic computing.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yuyang Li,Hui Liu,Li Ding,Liqi Li,Lixiang Wang,Deren Yang,Yanjun Fang
Perovskite nanocrystals (PNCs) offer unique advantages in large-area and thick-film deposition for X-ray detection applications due to the decoupling of the crystallization of perovskite from film formation, as well as their low-temperature and scalable deposition methods. However, the partial detachment of long-chain ligands in PNCs during the purification process would lead to the exposure of surface defects, making it challenging to ensure efficient charge carrier extraction and stable X-ray detection. In this study, we propose a beneficial strategy that involves the in situ reparation of these exposed defects with sodium bromide (NaBr) during the purification process to construct CsPbBr3 PNC-organic bulk heterostructure X-ray detectors. The NaBr-passivated PNCs exhibit stronger photoluminescence intensity and lower trap density in films compared to those of the control samples, confirming the effective passivation of halide vacancy defects. Furthermore, the NiOx hole transport layer with remarkable electron blocking capability is introduced to further suppress the dark current of the devices. Consequently, the optimal devices exhibit a large sensitivity of 4237 μC Gyair–1 cm–2 and a low dark current density of 10 nA cm–2, as well as improved operational stability, which allows for high-contrast and low-dose X-ray imaging applications.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Sijia Miao,Zhaoyue Yang,Yujian Du,Yuljae Cho
Incorporation of ferroelectric materials into perovskite solar cells (PSCs) has been demonstrated as an effective approach to elevating the device performance. Dipole polarization of the ferroelectric material can be tuned by an external bias, facilitating the charge transport of PSCs. However, fundamental challenges still exist to utilize the ferroelectric effect in PSCs because the external bias leads to ion migration of the perovskites, deteriorating the performance and long-term stability of the devices. In this study, we report an effective method to improve the spontaneous polarization of the ferroelectric polymer incorporated in a quasi-two-dimensional (2D) perovskite without utilizing the external bias. The solvent engineering strategy effectively enhances the ferroelectric phase and crystallinity of the ferroelectric polymer, improving the local electric field and consequently enhancing charge transport. In addition, the solvent strategy offers the formation of a smooth surface as well as a favorable crystal orientation, leading to a reduced defect density in the quasi-2D perovskite films. Attributed to the dual effects, a significant improvement of the power conversion efficiency is achieved from 6.27 to 14.83%, and it is further improved to 16.65% through fine-tuning of the functional layers’ thickness. We believe that the method reported offers an avenue for designing the quasi-2D perovskite without the requirement for structural modification of the PSCs.
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Cell Reports Physical Science
·
2024
·
IF 7.9
Ruihao Ma,Xiangjun Xu,Bowen Jin,Siwen Liu,Jinguo Cao,Shimin Wang,Erjing Wang,Liang Chu,Congcong Wu
Developing sufficient dynamics for charge separation and transfer is critical to improve photovoltaic performance. Normally, dynamics can be modulated by band bending via surface engineering, but this has typically been negligible in the p-n homojunction for boosted perovskite solar cells. Herein, we adopt carbon dots as an addition to induce a bilayer p-n perovskite homojunction to improve interfacial charge transfer within perovskite solar cells. Notably, the inclusion of carbon dots induces the spontaneous assembly of a bilayer structure, where the upper layer is enriched with dots and the underlying layer remains pristine perovskite. This unique arrangement creates a p-n homojunction, accompanied by an internal electric field, which allows for modulating energy levels and facilitating charge-carrier separation and transfer. Benefiting from the p-n homojunction, the power conversion efficiency of the perovskite solar cells increases from 18.57% to 21.09%. Additionally, the hydrophobic nature of the carbon dots considerably enhances the humidity stability of the solar cells.
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Materials Horizons
·
2025
·
IF 10.7
Lingyun Xu,Hong yang Liu,Qi Song,Xiaohan Sun,Zhihao Zhao,Zhenya Ge,Yupeng Chen,Xiangyu Jiang,Lei Jiang
Biological olfactory perception relies on ionic transport, offering a promising alternative to conventional gas sensors that depend on electronic signal transmission, which often suffer from limitations such as limited sensitivity, high power consumption, and susceptibility to moisture. Inspired by biological olfactory ion channels, nanochannel-based ionic membranes incorporating 2D materials and ionic liquids have been developed. Through functional modifications, these membranes exhibit unique tremella-like structures that optimize gas diffusion pathways and provide effective gas interaction sites. The developed membranes demonstrate exceptional performance, including a low detection limit of 189 ppb, a remarkable sensitivity of 2.02%/ppm across 5-500 ppm, specific selectivity to ethanol, stable reversibility over 100 cycles, and ultralow power consumption of only 0.28 μW. Experimental and simulation results confirm that the enhanced sensing performance stems from solvated ion transport within nanoconfined channels. Notably, the membranes maintain detection efficiency under varying humidity conditions, demonstrating practical applicability in both food quality assessment (30-40% RH) and intoxicated driving monitoring (80-90% RH). It is envisioned that the deepened understanding of solvated ion transport within nanoconfined channels will advance the development of bioinspired olfactory perception and integrated sensing systems.
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