Journal of Physical Chemistry C
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2012
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IF 4.805
Huiqing Wu,Beibei Tang,Peiyi Wu
A novel hybrid ultrafiltration membrane was prepared by incorporating hollow mesoporous silica spheres (HMSS) into a polymer matrix of brominated polyphenylene oxide (BPPO) using triethanolamine as the amination agent. The hybrid membrane exhibits improved water permeability, thermal stability, and water content, while the rejection to egg albumin maintaining at a high level (>90%). Especially when the addition of HMSS is 1.0 wt %, the water flux of the hybrid membrane reaches a maximum that is almost two times that of the BPPO membrane. The unique properties of HMSS and good interaction between HMSS and polymer contribute to the improvement of membrane performance. The effect of the structures of silica particles on the membrane performance was also investigated, and the results suggest that HMSS with moderate wall thickness is more suitable for the optimization of hybrid membrane properties.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
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IF 4.2
Sun Zeyuan,Gu Ningxia,Zha Leying,Ning Lei,Du Pingfan,Shi Chenyang,Song Lixin,Xiong Jie
Organic-inorganic hybrid perovskite solar cells (PSCs) has been rapid development due to the excellent photoelectric properties, but it also faces the issues of poor stability in high humidity environment. The introduction organic diammonium iodide could effectively passivate defect and improve stability in three-dimensional (3D) perovskite by forming Dion-Jacobson (DJ) phase two-dimensional (2D) perovskites. Here, a stable alternative, 4-(aminomethyl) piperidinium iodide (AMPI), is developed for high-performance 2D/3D PSCs. The DJ 2D perovskite layer which is grown in-situ on the 3D perovskite not only boosts the stability of PSCs due to its intrinsically stable structure and alternating hydrogen bonding interactions between the layers of organic and inorganic, but also modulates the energy levels aligned possibly between perovskite layer and spiro-OMeTAD HTL, thus facilitate the charge transfer and improves the open-circuit voltage (V oc ). Finally, 20.11% power conversion efficiency (PCE) has been achieved of the 2D/3D PSCs. Furthermore, they exhibit batter stability in compassion of the control when they are stored in air conditions (25 °C and dark conditions) and 30–40% relative humidity for 700 h, which is owed to the moisture attacks protection from the layer of 2D perovskite to 3D perovskite films. This paper indicates the manufacture of high-performance and stable 2D-3D heterojunction PSCs used by nitrogenous heterocyclic compounds has a potential broad application prospect.
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ACS Nano
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2025
·
IF 16
Junjie Tong,Chen Dong,Miaosen Yao,Qichao Wang,Chenlei Shen,Yaxin Yue,Lei Yan,Yueyue Gao,Gentian Yue,Weifeng Zhang,Makhsud I. Saidaminov,Furui Tan
Low-temperature printable carbon-electrode perovskite solar cells (C-PSCs) promise commercially scalable and stable low-cost photovoltaic solutions. However, they suffer from low efficiency due to severe performance losses at the perovskite and carbon interface. Here, we propose a spontaneous interface assembly and passivation strategy based on a P3HT/NiOx hole-transport bilayer by introducing quaternary ammonium bromide surfactants into NiOx nanoparticles, and reveal the significant influences from their alkyl chains. Experimental and theoretical results demonstrate that hexyl trimethylammonium bromide (HTAB), with its optimal alkyl chain length, not only ensures the improved monodispersity and film quality of NiOx nanoparticles but also matches and interacts strongly with P3HT side chains, significantly enhancing the molecular orientation of P3HT for superior electronic contact and efficient hole transport between P3HT and HTAB-NiOx. In addition, the Br– ions in HTAB-NiOx spontaneously diffuse into a perovskite film, passivating uncoordinated Pb2+ or I vacancy defects and inhibiting the formation of metallic Pb0. Eventually, the low-temperature printable C-PSCs and modules achieve the highest reported efficiency of 22.1 and 18.0%, respectively; exhibit excellent stability at 80–90% high humidity without encapsulation; and demonstrate long-term operational stability for 500 h under maximum power point tracking conditions, maintaining 94% of the initial efficiency.
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Journal of Materials Chemistry C
·
2024
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IF 5.7
Xiaohui Lu,Xiandong Zhao,Congcong Wu,Shiming Wang,Yanyan Li,Xiaojie Yang,Yang Li,Li Zhao
Interfacial defects between the perovskite layer and the adjacent charge transport layer play a crucial role in enhancing the power conversion efficiency (PCE) and stability of organic–inorganic halide perovskite solar cells. In this study, we employed a transition metal-containing selenide (NiSe) to modify the interface between the electron transport layer and the perovskite layer. Ni2+ as a transition metal exhibits a strong propensity for forming octahedral complexes with halide ions, thereby providing a favorable substrate for perovskite crystallization. This significantly contributes to the reduction of defect densities and the fabrication of high-quality perovskite thin films. Our findings indicate that the grain size of the perovskite films markedly increased upon modification with 0.4 mg mL−1 NiSe, resulting in a reduction of defect density from 2.175 × 1016 cm−3 to 1.485 × 1016 cm−3. Furthermore, the PCE of the NiSe-modified device, at a concentration of 0.4 mg mL−1, reached 14.85%, a significant improvement compared to that of the unmodified device (12.14%). These results offer a novel approach to fabricate perovskite films with enhanced crystallinity and reduced trap density.
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NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 11
·4708-4716
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IF 2.7
Zihui Liang,Qiangqiang Cui,Yijun Zhou,Cheng Zeng,Fengxiang Chen,Li Zhao,Changhai Yi
The energy level matching of perovskites was regarded as the prerequisite for achieving high photovoltaic performance. Graphitic carbon nitride (g-C3N4) is a two-dimensional polymer semiconductor material, which has good semiconductor properties, suitable electronic band structure and excellent physical and chemical stability, and is widely used in energy and materials science fields such as for photovoltaic conversion. Graphene oxide (GO) is a two-dimensional π-conjugated carbon atom sheet formed by sp2 hybrid bonds. Due to its unique electronic properties, g-C3N4 can be seamlessly spliced with the two-dimensional domains of GO through continuous π-conjugated bonds, which not only effectively modifies the electronic structure of g-C3N4 but also contributes to the unhindered separation and transfer of electrons and holes in the plane. Therefore, in this work, we effectively passivated film trap defects and significantly reduced non-radiative recombination by constructing GO/g-C3N4 heterostructures as an ultra-thin interface modification layer between the perovskite layer and the electron transport layer (ETL). As a result, the addition of a GO/g-C3N4 heterojunction modification layer facilitated achieving an improved power-conversion efficiency (PCE 20.50% to 22.08%), inhibited the recombination of carriers, and improved the mobility of carriers. An unpackaged device demonstrated excellent stability, maintaining more than 90% of the initial efficiency after over 1,000 hours of storage under ambient conditions.
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RSC Advances
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2024
·Vol. 14
·期 13
·8709-8717
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IF 3.9
Jiang-Tao Ma,Teng-Fei Meng,Zi-Yun Chen,Yu-Jun Zhu,Cheng Lian,Peng Wang,Ding-Hua Liu,Yu-Pei Zhao
This work investigates the influence of catalyst HZSM-5 on the isomerization of 2,5-dichlorotoluene (2,5-DCT) to produce 2,4-dichlorotoluene (2,4-DCT). We observe that hydrothermal treatment leads to a decrease in total acidity and Brønsted/Lewis ratio of HZSM-5 while generating new secondary pores. These characteristics result in excellent selectivity for post-hydrothermal modified HZSM-5 in the isomerization reaction from 2,5-DCT to 2,4-DCT. Under atmospheric pressure at 350 °C, unmodified HZSM-5 achieves a selectivity of 66.4% for producing 2,4-DCT, however after hydrothermal modification the selectivity increases to 78.7%. Density Functional Theory (DFT) calculations explore the thermodynamic aspects of adsorption between the HZSM-5 surface and 2,4-DCT. The kinetic perspective investigates the mechanism involving proton attack on the methyl group of 2,5-DCT followed by rearrangement leading to formation of 2,4-DCT during isomerization. The consistency between simulation and experimental results provides evidence for the feasibility of isomerizing 2,5-DCT to 2,4-DCT. This work fills the gap in the low value-added product 2,5-DCT isomer conversion, indicating its significant practical application potential and provides a valuable reference and guidelines for industrial research in this field.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yongjun Wei,Feiping Lu,Xinqi Ai,Ju Lei,Yong Bai,Ziang Wei,Ziyin Chen
During the solution-based fabrication of perovskite solar cells (PSCs), the rapid and uncontrollable process of crystal nucleation and growth leads to the formation of numerous defects at the surface and grain boundaries, resulting in severe non-radiative recombination, which negatively affects the optoelectronic performance of the device. In this work, two passivation molecules, 2-(3-Pyridyl)-1H-benzimidazole (PBI) and 2-(3-Pyridyl)-1H-benzimidazole-6-carboxylic acid (PBI-CA), were introduced onto the surface of the perovskite film via a post-treatment method. PBI contains two basic functional groups, -C-N and -C N, where the nitrogen atom possesses a lone electron pair. PBI-CA has the same functional groups but also includes a carboxylic acid (-COOH) functional group, which contains both a carbonyl and a hydroxyl group, also having non-bonding electron pairs. The lone electron pairs in these functional groups exhibit Lewis base characteristics, which can coordinate with the uncoordinated Pb 2 + ions in the perovskite film, thereby passivating the ion defects caused by Pb 2+ . Compared to PBI alone, PBI-CA has an additional carboxylic acid group, providing more Lewis base sites, making it more effective in coordinating with Pb 2+ and passivating defects. We investigated the passivation mechanism of these two passivators through first-principles calculations and demonstrated their positive impact on PSCs through experiments and characterizations. The introduction of PBI and PBI-CA increased the size of the perovskite crystals, improved the power conversion efficiency (PCE), and enhanced device stability. The results showed that in a perovskite system with a bandgap of 1.6 eV, the PCE of the PBI-CA-modified device reached 21 %, higher than that of the PBI-modified device (20.3 %) and the baseline device (18.6 %), with significantly improved device stability. These Lewis base-containing molecules can be widely used to fabricate high-performance PSC devices.
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ACS Applied Energy Materials
·
2025
·
IF 5.5
Yuhan Deng,Yujie Yuan,Jian Ni,Lei Zheng,Jinlian Bi,Jia Guo,Rufeng Wang,Haoxuan Li,Shuai Zhang,Hongkun Cai,Jianjun Zhang
All-inorganic perovskite quantum dots (PQDs) have sparked a research boom due to their superior optoelectronic properties. However, current synthesis methods are complex and unsuitable for large-scale continuous production because the rapid reaction kinetics of quantum dots (QDs) make regulating their nucleation and growth challenging. Herein, we developed an efficient microfluidic technology using temperature-assisted base-acid ligand modulation to control the nucleation and growth of PQDs for mass fabrication. The obtained CsPbBr3 PQDs exhibited high dispersion, uniform sizes, and high photoluminescence quantum yield. Moreover, CsPbBr3 maintained high photoluminescence intensity for 120 min under UV irradiation, demonstrating good stability. These results provide a promising pathway for large-scale PQD production, which is crucial for advanced optoelectronic applications. Compared with the traditional hot injection (HI) and ligand-assisted reprecipitation (LARP) methods, microfluidic technology significantly saves materials and reagents. The microfluidic technology is also helpful for precisely controlling the nucleation process of QD growth.
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ACS Nano
·
2024
·
IF 15.8
Xuefei Li,Jinyang Zhao,Hui Xiao,Hangchuan Zhang,Miao Zhou,Xin Zhang,Xiaolin Yan,Aiwei Tang,Lixuan Chen
Colloidal nanoparticles offer unique photoelectric properties, making them promising for functional applications. Multiparticle systems exhibit synergistic effects on the functional properties of their individual components. However, precisely controlled assembly of multiparticles to form patterned building blocks for solid-state devices remains challenging. Here, we demonstrate a versatile multiparticle synergistic electrophoretic deposition (EPD) strategy to achieve controlled assembly, high-efficiency, and high-resolution patterns. Through elaborate surface design and charge regulation of nanoparticles, we achieve precise control over the particle distribution (gradient or homogeneous structure) in multiparticle films using the EPD technique. The multiparticle system integrates silicon oxide and titanium oxide nanoparticles, synergistically enhancing the emission efficiency of quantum dots to a high level in the field. Furthermore, we demonstrate the superiority of our strategy to integrate multiparticle into large-area full-color display panels with a high resolution over 1000 pixels per inch. The results suggest great potential for developing multiparticle systems and expanding diverse functional applications.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Meng Yan,Liu Yu-Qin,Wang Chao,Si Yang,Wang Yun-Jie,Xia Wen-Qi,Liu Tian,Cao Xu,Guo Zhi-Yan,Chen Jie-Jie,Li Wen-Wei
The introduction of single-atom catalysts (SACs) into Fenton-like oxidation promises ultrafast water pollutant elimination, but the limited access to pollutants and oxidant by surface catalytic sites and the intensive oxidant consumption still severely restrict the decontamination performance. While nanoconfinement of SACs allows drastically enhanced decontamination reaction kinetics, the detailed regulatory mechanisms remain elusive. Here, we unveil that, apart from local enrichment of reactants, the catalytic pathway shift is also an important cause for the reactivity enhancement of nanoconfined SACs. The surface electronic structure of cobalt site is altered by confining it within the nanopores of mesostructured silica particles, which triggers a fundamental transition from singlet oxygen to electron transfer pathway for 4-chlorophenol oxidation. The changed pathway and accelerated interfacial mass transfer render the nanoconfined system up to 34.7-fold higher pollutant degradation rate and drastically raised peroxymonosulfate utilization efficiency (from 61.8% to 96.6%) relative to the unconfined control. It also demonstrates superior reactivity for the degradation of other electron-rich phenolic compounds, good environment robustness, and high stability for treating real lake water. Our findings deepen the knowledge of nanoconfined catalysis and may inspire innovations in low-carbon water purification technologies and other heterogeneous catalytic applications.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Lili Wang,Huixian Dong,Keying Zheng,Nasha Zeng,Minghua Wu,Xi Wang,Huijun Li
The printing and dyeing industry is currently accelerating toward a direction of high efficiency, energy conservation, environmental protection, and integration with digitalization. Disperse dye wash-free digital inkjet dyeing is a revolutionary breakthrough for cleaning and coloring polyester fabric. Based on the solubility parameters and the hot-melt dyeing characteristics of disperse dyes, soft, hard, and functional monomers of acrylate were used as the main body. Moreover, single-vinyl fluorinated polysiloxane and divinyl polysiloxane with low solubility parameters were used as modified monomers. A modified polyacrylate (PFSMA) adhesive containing silicon in the main chain and fluorine silicon in the side chain was prepared via miniemulsion polymerization. Using disperse digital inkjet dyeing of polyester fabric without washing can realize energy saving, emission reduction, and carbon reduction. Results showed that the optimum preparation conditions of PFSMA were as follows: DVFS molecular weight of 957 g/mol and DVFS content of 2.5 wt %. Compared with that of polyacrylate (PA), the glass-transition temperature of PFSMA film decreased, and its water resistance, toughness, and adhesion enhanced. When the PFSMA content in the wash-free disperse red ink was 8 wt %, the color yields of the front and back of the PFSMA jet-dyed polyester fabric were 18.86 and 13.28, respectively. Moreover, the color yield of the front of PFSMA jet-dyed polyester fabric was 39.9% higher than that of the pure liquid disperse red jet-dyed fabric. The simulated fixation rate was 87.9%, approximately 2.9 times higher than that of the PA wash-free jet-dyed fabric. The color fastness to dry rubbing reached level 4 and the color fastness to wet rubbing reached level 3–4, which was one level higher than that of pure liquid disperse red jet-dyed fabrics. The color fastness to soaping reached grade 5 and the color fastness to heat compression reached grades 4–5 and above. The fabric was a little firmer but smoother. The color properties, color fastness, and hand feeling of the PFSMA wash-free jet-dyed polyester fabric exceeded the levels of commercially available adhesives.
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Small
·
2024
·
IF 13
Lei Zhang,Jianzha Zheng,Cong Liu,Yifei Xie,Hanyu Lu,Qinrong Luo,Yulong Liu,Huidong Yang,Kai Shen,Yaohua Mai
Antimony selenosulfide (Sb 2 (S,Se) 3 ) is an emerging quasi-1D photovoltaic semiconductor with exceptional photoelectric properties. The low-symmetry chain structure contains complex defects and makes it difficult to improve electrical properties via doping method. This article reports a doping strategy to enhance the efficiency of Sb 2 (S,Se) 3 solar cells by using alkali halide (CsI) as the hydrothermal reaction precursor. It is found that the Cs and I ions are effectively doped and atomically coordinate with Sb ions and S/Se ions. The CsI-doping Sb 2 (S,Se) 3 absorbers exhibit enhanced grain morphologies and reduced trap densities. The consequential CsI-doping Sb 2 (S,Se) 3 based solar cells demonstrate favorable band alignment, suppressed carrier recombination, and improved device performance. An efficiency as high as 10.05% under standard AM1.5 illumination irradiance is achieved. This precursor-based alkali halide doping strategy provides a useful guidance for high-efficiency antimony selenosulfide solar cells.
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