Solar RRL
·
2026
·Vol. 10
·期 9
·e70362
·
IF 4.8
Yingjun Zhou,Chuanhe Ma,Shulei Liang,Yujun Li,Hailong Wang
In Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cells, the conventional magnetron-sputtered ZnO (ZnO-SP) suffers from high cost, low efficiency, and interface damage. This study systematically compares sol–gel ZnO (ZnO-SG) and 18C6 crown ether-modified sol–gel ZnO (ZnO-SG-18C6) as interfacial layers. X-ray diffraction (XRD), scanning electron microscope (SEM), AFM, and X-ray photoelectron spectroscopy (XPS) show ZnO-SP has a uniform hexagonal wurtzite structure, whereas ZnO-SG displays an amorphous fibrous morphology with bright/dark striations. Both exhibit similar UV absorption peaks, but ZnO-SG shows broader absorption and double-exponential decay. Density–voltage ( J – V ) tests reveal that ZnO-SG-18C6 increases PCE from 8.5% to 10.6%, surpassing the 9.5% achieved with ZnO-SP. Electrochemical impedance spectroscopy (EIS) analysis shows that the ZnO-SG-18C6 layer reduces carrier recombination, with the charge transfer resistance ( R ct ) increasing by 30%. Transient photocurrent measurements further reveal that it enhances the photocurrent response, achieving a 1.8-fold increase in the peak, which rises to four times under a 70% high duty cycle.This work demonstrates ZnO-SG-18C6 as a low-cost, high-efficiency alternative to ZnO-SP in CZTSSe solar cells.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Yu Huang,Xiao Li,Guoping Zhu,Zhennan Wang,Pooya Jafari,Xiaoning Song,Jiabing Feng,Zongmin Zhu,Siqi Huo,Pingan Song
Despite great advances, it remains a grand challenge to design a fire retardant for the creation of transparent fire-retardant epoxy resin (EP). To address this issue, a phosphorus/nitrogen/sulfur-containing ionic flame retardant, TD, composed of a diphenylphosphinate unit and a 2-thiophenethylammonium unit, was synthesized and incorporated into EP. The EP composite containing only 3 wt % TD (0.25 wt % phosphorus) achieved a vertical burning (UL-94) V-0 rating, and the limiting oxygen index (LOI) increased to 24.7%. Cone calorimetry results showed that, relative to neat EP, the EP/5TD composite achieved notable reductions in heat and smoke generation. Its peak heat release rate (pHRR) and total heat release (THR) decreased by 44.0% and 24.0%, while the peak yields of carbon monoxide (pCOP) and carbon dioxide (pCO2P) decreased by 23.5% and 58.6%. Notably, TD not only significantly enhanced fire safety and mechanical properties of EP but also effectively maintained thermal properties and optical transparency. The flame-retardant efficacy of TD was ascribed to the combined action of P, N, and S, which enabled multiple mechanisms, including condensed-phase char barrier formation, gas-phase dilution/cooling, and radical scavenging effects. This work develops highly effective multielement flame retardants for preparing fire-safe epoxy resins with superior comprehensive performances.
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Advanced Optical Materials
·
2026
·
IF 7.2
Wanling Mao,Siyong Wang,Li Zhang,Yujia Luo,Yuyao Feng,Yunhai Xiong,Yixuan He,Yuhui Dong,Yousheng Zou,Haibo Zeng
Low-toxicity quantum dots (QDs) based on group I-III-VI elements have attracted significant interest due to their color-tunability for wide-gamut displays. Nevertheless, the width of the blue-emitting peak remains considerably broader than those of the green and red counterparts, resulting in degraded color purity, restricted gamut coverage, and diminished energy efficiency in blue-emitting devices. Here, we report spectroscopically pure blue QDs (λ = 465 nm) with an ultranarrow FWHM of 36 nm, achieving excellent color purity for blue-emitting I-III-VI QDs. Employing a two-step hot-injection method with precise thickness control, this approach enables epitaxial growth of an atomically thin 0.35 nm thick AgGaS 2 (AGS) shell on Ag-In-Zn-Ga-S cores. Using in situ HRTEM on systematically synthesized AIZGS@AGS architectures, we directly captured the controlled epitaxial growth of this shell, revealing a clean core–shell interface. The high-crystallinity AGS shell passivates surface defects, narrowing the PL spectrum from 103 to 36 nm. Moreover, systematic In:Zn ratio tuning further affords AIZGS@AGS QDs that exhibit narrow linewidths and continuous spectral coverage across the blue region (465–509 nm). Our study provides an effective approach for high-quality I-III-VI blue QDs, demonstrating significant potential for advanced display applications.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Peng Qiao,Jianwei Zhang,Wenyi Wang,Yijie Lin,Meiru Zheng,Xin Guo,Yibo Liu,Yuanyuan Wang,Jiaojing Zhang,Hua Song,Xueqin Wang
Developing semiconductors with optimal bandgaps and enhancing their photocatalytic performance remain key challenges in achieving efficient hydrogen evolution from water splitting. TiO 2 nanoflowers with open architectures, which provide abundant active sites, show significant potential in this field. Additionally, the construction of photocatalysts using S-scheme heterojunctions has been proven to improve redox capacity, while the introduction of oxygen vacancies has been shown to increase efficiency. Therefore, in this study, NiS-loaded TiO 2 nanoflowers were fabricated by a simple template-free solvothermal method. Oxygen vacancies were constructed by partially reducing the composite with a low NiS concentration. The synergistic effect of the oxygen vacancies and heterojunctions greatly improved the visible-light response of the catalyst, and the degradation rate of rhodamine B reached 99.81 % in 3 h under visible light. The transient photocurrent response of 1.0 wt% NiS-TiO 2 nanoflowers was 47.52 μA·cm −2 and the rate of hydrogen evolution achieved 1782.28 μmol·g −1 ·h −1 , approximately 6.5 times higher than that of pristine TiO 2 nanoflowers. The transfer process of electrons was verified by calculation using density functional theory, and an electron transport mechanism for the S-scheme heterojunction is also proposed to illustrate the photocatalytic mechanism. The as-prepared NiS-loaded TiO 2 nanoflowers could be prime candidate for the photocatalytic hydrogen evolution from water splitting and degradation of organic pollutants.
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高影响因子
CATALYSIS COMMUNICATIONS
·
2015
·
IF 3.699
Feng Ding,Sizhao Zhang,Xuegang Luo,Xiaoyan Lin
A novel S/BiOCl thermocatalyst in response to heat excitation was successfully synthesized by a one-step method and then added into polymeric matrix to give corresponding films. The results obtained show that the surfaces of as-prepared films with S/BiOCl were truly degraded via thermocatalytic reactions at ambient conditions. The average molecular weights of experimental films have fallen dramatically, comparing to the comparisons. In addition, the changes of chemical groups were simultaneously observed in the process. Thus this thermocatalytic process maybe a very fascinating route to come true the degradation of polymeric films with lower temperature triggered.
研究领域:
材料科学
·
高分子化学
·
环境功能材料
·
催化化学
·
纳米材料
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DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Guonan Cui,Yanchun Yang,Ruilan Chen,Chengjun Zhu
Cations substitutions are known to make much significant contribution on achieving the high-quality kesterite Cu 2 ZnSn(S,Se) 4 thin films . And the optimal ratios of Mn, Ni and Co substitutions are reported to be ~0.05, belong to the low doping to reduce their defect density , which looks like to some extent the effect of Na doping. In this study, learning the research experience of alkali metal doping, we introduced the extra trace Mn 2+ ion into the precursor solution without affecting the compositions of other elements (i.e. Cu, Zn, and Sn), and the effect of trace addition on properties of the absorber layer was also studied. It was discovered that crystalline, electrical properties, and hole carrier concentration of Cu 2 ZnSn(S,Se) 4 thin films increased with an increase of Mn incorporation, and the best doping ratio of Mn/(Cu + Zn + Sn) was considered to be 0.03. In addition, the effect of extra trace Mn-doping on the film thickness and elemental compositions of Cu 2 ZnSn(S,Se) 4 absorber layer were studied in detail.
研究领域:
材料科学
·
半导体物理
·
薄膜制备
·
光伏材料
·
固体化学
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 11
·990
·
IF 2.8
Liu Hongmei
The high energy density made lithium–sulfur batteries as the most promising energy storage devices. However, the poor cycle stability, which results from the severe polysulfide migration during the electrochemical cycles, inhibited the wide application of lithium–sulfur batteries. It has been proved that inhibiting the polysulfide shuttle effect and accelerating the polysulfide conversion could enhance the electrochemical performance of sulfur cathodes. Herein, hierarchically porous carbon/titanium dioxide (HPC/TD) composites are designed as sulfur host to adsorb the polysulfide and accelerate the redox conversion during cycling. Therefore, the polysulfide migration is effectively inhibited. The developed HPC/TD@S cathodes exhibit initial high capacity of 1256 mAh/g at 0.1 C. These results confirm that the accelerated redox conversion of polysulfide is beneficial for improving the electrochemical performance of Li–S batteries.
研究领域:
储能
·
材料科学
·
电化学
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Journal of Energy Storage
·
2026
·
IF 10.7
Shang Wu,Qiyue Tong,Huize Zhang,Zhenyang Yu,Chenxu Zhu,Qiong Su,Hong Zhang,Guihua Li,Xiaojun Yang,Juzhen Kang,Quanlu Yang
NH 2 -UIO-66 has been regarded as a promising porous material owing to its high specific surface area and structural stability, although its limited conductivity restricts its application in supercapacitors. In this work, a NiCo 2 S 4 /NH 2 -UIO-66 nanoflower composite (NCS/NU) was synthesized via a vulcanization process with thioacetamide. Electrochemical measurements conducted in a three-electrode system revealed that the composite delivered a specific capacitance of 172.4 mAh g −1 at 1 A g −1 and maintained 82.1% of its initial capacitance after 5000 cycles at 5 A g −1 . Morphological characterization indicated that the nanoflower architecture was largely preserved after sulfurization. The in-situ formed NiCo 2 S 4 contributed to enhanced pseudocapacitance and induced surface wrinkling of the petals, which helped stabilize the composite structure supported by NH 2 -UIO-66. For the anode, S and N co-doped three-dimensional porous carbon (SNC) was prepared via a sol-gel method followed by stepwise high-temperature carbonization using ammonium persulfate as the activator. A hybrid supercapacitor was subsequently assembled with the NCS/NU as the positive electrode and SNC-700 as the negative electrode. The device delivered an energy density of 28.8 Wh kg −1 and retained 74.1% of its initial capacitance after 5000 charge-discharge cycles.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Wei Zhao,Mengru Yan,Yantong Chen,Junyu Shen,Xuekun Hong,Feihu Mu,Shijie Li,Sujuan Zhang,Quan Wang,Benlin Dai,Yazi Liu,Cheng Sun
Public health and ecosystems are at risk due to the overuse and large discharge of pharmaceutical and personal care products (PPCPs) (e.g. carbamazepine). Herein, a MIL-68(In)-NH 2 /Bi 4 O 7 S-scheme heterojunction was first prepared through a two-step route for efficient and environmentally friendly photocatalytic carbamazepine degradation. 1.0-MIL-68(In)-NH 2 /Bi 4 O 7 displayed efficient photocatalytic performance, and the removal rate of 50 mg/L carbamazepine could reach 92.7% at 120 min, which was 3.6 and 2.9 times that of Bi 4 O 7 and MIL-68(In)-NH 2 , respectively, under visible light. Using LC-MS analysis and Gaussian software calculations, the degradation path of carbamazepine was explored in detail. A series of photoelectrochemical experiments revealed the efficient transfer of photogenerated charges in 1.0-MIL-68(In)-NH 2 /Bi 4 O 7 photocatalyst. The radical trapping experiments and ESR characterization suggested a reasonable S-scheme photocatalytic mechanism. In this heterojunction material, the excellent photocatalytic performance was attributed to the large surface area and S-scheme mechanism, which provides more active sites and separates the photogenerated charges rapidly.
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高影响因子
ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Yangbin Liu,Nian Liu,Minghua Lin,Caifeng Huang,Zhijun Lei,Hongshuai Cao,Fugang Qi,Xiaoping Ouyang,Yun Zhou
The traditional semiconductor photocatalysts for solving the related environmental aggravation are often challenged by the recombination of photogenerated carriers. Designing an S-scheme heterojunction photocatalyst is one of the keys to tackling its practical application problems. This paper reports an S-scheme AgVO 3 /Ag 2 S heterojunction photocatalyst constructed via a straightforward hydrothermal approach that exhibits outstanding photocatalytic degradation performances to the organic dye Rhodamine B (RhB) and antibiotic Tetracycline hydrochloride (TC-HCl) driven by visible light. The results show that AgVO 3 /Ag 2 S heterojunction with a molar ratio of 6:1 (V6S) possesses the highest photocatalytic performances, 99% of RhB can be almost degraded by 0.1 g/L V6S within 25 min light illumination, and about 72% of TC-HCl can be photodegraded with the act of 0.3 g/L V6S under 120 min light irradiation. Meanwhile, the AgVO 3 /Ag 2 S system exhibits superior stability and maintains high photocatalytic activity after 5 repeated tests. Moreover, the EPR measurement and radical capture test identify that superoxide radicals and hydroxyl radicals mainly contribute to the photodegradation process. The present work demonstrates that constructing an S-scheme heterojunction can effectively inhibit the recombination of carriers, providing insights into the fabrication of applied photocatalysts for practical wastewater purification treatment.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shuo Shi,Mingmin Jia,Meisheng Li,Shouyong Zhou,Yijiang Zhao,Jing Zhong,Dingliang Dai,Jianhao Qiu
Zinc oxide–Graphitic carbon nitride (ZnO@g-C 3 N 4 ) composite membranes were prepared via in-situ growing ZnO crystals in the g-C 3 N 4 membrane. In this composite membrane, ZnO crystals were embedded in loose surface layers of g-C 3 N 4 membrane, which can repair some non-selective defects and improve the dye retention performance. In addition, the hetero-structures formed between ZnO and g-C 3 N 4 nanosheets promoted the separation of photogenerated electron-holes in g-C 3 N 4 layer, and improving the photocatalytic and anti-fouling performance of ZnO@g-C 3 N 4 composite membranes. Herein, the prepared composite membranes showed excellent dye removal performance and self-cleaning property in dynamic recirculation filtration systems under visible light irradiation. The optimized sample (CNZ-0.15 g) showed MB removal efficiency of 94.4% and water flux of 336.8 L.m −2 .bar −1 .h −1 . The outcome of this research would suggest the application of graphitic nitride nanomaterials for developing highly efficient photocatalytic membranes.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Ao Nan Lai,Pei Zhi Zheng,Shu Chun Li,Yi Fei Zhu,Peng Cheng Hu,Shu Feng Zhou
A new approach is presented here for constructing higher-performance anion exchange membranes (AEMs) by combining block-type and comb-shaped architectures. A series of quaternization fluorene-containing block poly (arylene ether nitrile ketone)s (QFPENK-m-n) were synthesized by varying the length of hydrophobic segment as AEMs. The well-designed architecture, which involved grafting comb-shaped C10 long alkyl side chains onto the block-type main chains, formed efficient ion-transport channels, as confirmed by atomic force microscopy . As a result, the AEMs showed high hydroxide conductivities in the range of 34.3–102.1 mS⋅cm −1 from 30 to 80 °C at moderate ion exchange capacities (IECs). Moreover, the hydrophobic segment with nitrile groups also exhibited a profound anti-swelling property for the AEMs, resulting in ultralow swelling ratios ranging from 4.7% to 7.1% at 30 °C and 7.5%–9.8% at 80 °C, as well as superb conductivity-to-swelling ratios at 80 °C. In addition, the AEMs displayed good mechanical properties , thermal and oxidative stability , and optimizable alkaline stability.
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