JOURNAL OF ELECTRONIC MATERIALS
·
2018
·Vol. 48
·期 1
·286-295
·
IF 1.566
Zhang Chi,Xia Yong,Lian Linyuan,Fu Xiaoming,Yin Liping,Zhang Jianbing,Luo Wei,Miao Xiangshui,Zhang Daoli
Copper indium sulfide (CIS) quantum dots (QDs) are attractive as potential optoelectronic devices, since they have large absorption coefficients across a broad spectral range, size- and composition-tunable photoluminescence from the visible to the near-infrared, and low toxicity. However, CIS QDs should be hydrophilic in certain applications. In this present work, hydrophilic CIS and CIS/ZnS colloidal QDs were synthesized by a one-pot environmentally-friendly route employing N , N -dimethylformamide (DMF) as the solvent and in situ generated H 2 S as the sulphur precursor. The effect of stoichiometry was investigated by varying the feeding molar ratios of Cu/In, which did not affect the crystalline structure of the CIS colloidal QDs, while the optical property was influenced significantly. With the decrease of the feeding molar ratios of Cu/In, the band gap of the resulting CIS colloidal QDs had blue-shifts and relative photoluminescence quantum yield of the corresponding CIS/ZnS colloidal QDs increased monotonically.
研究领域:
材料科学
·
光学
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高影响因子
FUEL
·
2023
·
IF 7.4
Wenting Lin,Jianxian Li,Ziyu Zengcai,Baofang Zhang,Xiaoping Wu,Yunhong Pi,Tiejun Wang
Photothermal-driven reforming of methanol solution to hydrogen (PTRM) is an attractive way for sustainable in-situ hydrogen (H 2 ) supply by solar energy. But the effective activation of MeOH and H 2 O to improve H 2 production kinetics at low temperatures faces really challenge. As the cleavage energy barrier of C H bond in methanol is much higher than that of O H bond dissociation, here, we propose the use of CuInS 2 with high interfacial hydroxyl activation capacity to integrate with MIL-101(Cr) matrix via in-situ encapsulation strategy. The pore confinement and site isolation of Cr-MOF matrix (MIL-101(Cr)) keep the high dispersion of CuInS 2 (4.20 nm) and prohibit its agglomeration in PTRM. With synergistically photothermal effect, the insertion of CuInS 2 not only provides a high-speed channel for photoexcited charge migration through the interface between CuInS 2 and MIL-101(Cr) but also enhances the dehydrogenation activity of MeOH and H 2 O effectively as an electron-enriched tank. Moreover, the excellent ability of CuInS 2 to dissociate H 2 O molecules at low temperature promoted the formation of abundant interfacial OH, which reinforces the C H bond cleavage of MeOH to decline the apparent activation energy (26%) and boost the H 2 evolution kinetics (36233.0 μmolg cat -1 h −1 ). Encouragingly, CuInS 2 @MIL-101(Cr) with an exceptional total turnover number (TON) climbing up to 16,775 in 65 h of run without catalyst deactivation. This work provides an important insight for the rational design of ultra-stable photo-thermal catalysts toward solar-driven reforming of methanol solution to hydrogen and conducive to the high activity performance in hydrogen-powered polymer electrolyte membrane (PEMFC) fuel cell.
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APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Linke Zhao,Yang Li,Lili Li,Gongke Wang,Hairui Liu,Hongjing Li,Arif Nawaz,Haifa Zhai
A Z-scheme CIS/rGO/p-CN heterostructure was designed. • CIS/rGO/p-CN exhibits the highest visible-light activity for Cr(VI) photoreduction. • rGO serves as the solid-state electron mediator to switch the charge transfer mode. Hexavalent chromium (Cr (VI)), a highly toxic metal ion readily soluble in aqueous environments, poses significant threats to human health. Herein, a novel Z-scheme CuInS 2 /rGO/protonated g-C 3 N 4 heterostructure was designed with rGO serving as the solid-state electron mediator between CuInS 2 and protonated C 3 N 4 . The samples were systematically characterized using XRD, FTIR, SEM, TEM, XPS, PL, and UV–vis spectroscopy techniques. This flower-like hierarchical structure CuInS 2 /rGO/protonated g-C 3 N 4 exhibits enhanced visible-light photocatalytic activity for Cr (VI) photoreduction. Specifically, it demonstrates a 98% reductive efficiency for Cr (VI) within 20 min at pH= 4 and stable photocatalytic performance. The results indicate that the integration of rGO nanosheets significantly enhances the photocatalytic performance of the CuInS 2 /rGO/protonated g-C 3 N 4 heterostructure by weakening the built-in electric field between CuInS 2 and protonated C 3 N 4 and switching the charge transfer mode from a conventional p-n junction to a Z-scheme mechanism. Download: Download high-res image (103KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123798
·
IF 7.5
Hao Zhang,Tao Wang,Xinyi Liao,Xiqing Liu,Qiuyue Men,Mingmin Bai,Yongqing Wang
The construction of heterojunction photocatalysts featuring broad spectral response and efficient charge separation was crucial for the decomposition of organic pollutants. In this work, CuInS 2 quantum dot (CIS QDs)-modified TiO 2 nanorods (CISQ/TiO 2 ) composite photocatalysts with varying compositions were fabricated via a facile solvothermal process. Their visible-light-driven photocatalytic activity was subsequently evaluated using the degradation of 2,4-dichlorophenol (2,4-DCP) as a model reaction. The results indicated that when the CIS QDs loading was 10 wt%, the photocatalytic activity was significantly enhanced. A series of characterizations revealed that the improved activity arose from the synergistic effects of the narrow-band-gap CIS QDs, which broadened the light absorption spectrum of TiO 2 and thereby increased light utilization. Furthermore, the proposed Z-scheme-like charge transfer accelerated the migration of photogenerated charge carriers while preserving the high redox potential of the system. This work demonstrated a facile strategy for constructing high-performance TiO 2 -based composite photocatalysts, with significant implications for environmental remediation.
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高影响因子
Science China-Technological Sciences
·
2026
·Vol. 69
·期 4
·1420201
·
IF 5.1
Xu Mengchen,Li Bei,Yao Liping,Zhang Xiangxiang,Kong Jiaxin,Li Yanlin,Zheng Zhaoke,Li Xiaoyan
To combat rising bacterial infections, a hollow CuS@CuInS 2 heterostructure is engineered via ion-exchange and self-assembly. This hollow design provides dual photothermal/catalytic functions under visible/808 nm near-infrared irradiation, achieving high photothermal efficiency and stability. Integrating CuInS 2 quantum dots improves charge separation and extends carrier lifetimes compared to CuS alone. The architecture offers multiple reactive sites, enhancing photothermal Cu 2+ release and light-triggered ROS production. Combined heat, Cu 2+ , and ROS disrupt bacterial membranes, cause nucleic acid leakage, and eliminate >90% of S. aureus in 15 min (2.5 mg mL −1 ). The material shows favorable biocompatibility and negligible hemolysis. By synergizing multiple bactericidal pathways, this solar-responsive agent offers an effective solution for bacterial infections.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 16
·1-19
·
IF 2.8
Li Minghua,Gu Xinyue,Chen Guohui,Chen Youmei,Zhu Qin,Yan Ya,Li Zhengui
In this study, CuInS 2 (CIS) was prepared using the liquid phase reflux method, and different amounts of activated carbon (AC) are loaded onto CIS via a wet grinding method to prepare AC/CIS composites with varying composite ratios. The crystal structure, surface elemental composition, oxidation states, morphology, specific surface area, and optical properties of CIS and AC/CIS were analyzed ussing techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Brunauer–Emmett–Teller (BET) analysis, photoluminescence (PL), and ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis-DRS). Rhodamine B (RhB) was used as a model pollutant to investigate the visible-light photocatalytic activity of CIS and AC/CIS. The optimal mass load ratio for AC was determined to be 3%. At this optimal ratio, AC/CIS demonstrated the capability to degrade 80% of RhB within a span of 2 h. The judicious incorporation of AC enhances the visible light absorption of CIS, accelerates electron migration, which facilitates the separation of photogenerated carriers, thereby increasing the visible-light photocatalytic activity and recyclability stability of CIS. Additionally, due to the electrophilicity of AC, the introduction of AC led to a transformation in the main active species during the photocatalytic process, changing from holes (h + ) and hydroxyl radicals (·OH) to superoxide radicals (·O 2 − ). These findings strongly suggest that AC/CIS holds great promise as a visible photocatalyst for effectively degrading pollutants in the environment.
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高影响因子
JOURNAL OF MATERIALS CHEMISTRY
·
2012
·Vol. 22
·期 41
·21979-21986
·
IF 5.968
Meina Wang,Xiangyou Liu,Chuanbao Cao,Long Wang
Monodisperse CuInS2–ZnS nanocrystals were synthesized in organic solvents and effectively transferred to aqueous phase with the aid of trimethyl(tetradecyl)ammonium bromide (TTAB). TTAB-stabilized CuInS2–ZnS (CIS–ZnS–TTAB) nanocomposites exhibited good aqueous stability and preserved the high luminescence of the nanocrystals after phase transfer. More intriguingly, without any further modification, CIS–ZnS–TTAB showed a striking nuclear homing property, preferentially accumulating in the nuclei of living cells. This novel probe CIS–ZnS–TTAB may have applications in nuclear selective imaging and as a multifunctional drug carrier for nuclear targeted drug delivery. Our work provides a simple but effective way for hydrophobic nanomaterials to achieve both phase transfer and nuclear selectivity simultaneously.
研究领域:
材料科学
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生物医学工程
·
纳米技术
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高影响因子
ACTA PHYSICO-CHIMICA SINICA
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2026
·
IF 13.5
Shuai Zhang,Haifeng Li,Shijie Zhang,Shun Wang,Suxuan Du,Zhiwei Zhao,Xiaomiao Zhao,Xiaowei Liang
The application of MXene in the electromagnetic wave absorption (EWA) field has been increasingly extensive. To explore the potential of more MXene types, this study has successfully synthesized Ta 2 CT x MXene via HF etching and subsequently prepared a series of Ta 2 CT x MXene/CuInS 2 composites using a microwave-assisted chemical synthesis system. The Ta 2 CT x sample has demonstrated an optimal minimum reflection loss (RL min ) of −27.61 dB with an effective absorption bandwidth (EAB) of 0.8 GHz at a thin thickness of 2.9 mm and a 50 wt% filler loading. In contrast, the Ta 2 CT x MXene/CuInS 2 -50 composite has exhibited a significantly superior EAB of 4.48 GHz at a thinner thickness of 1.5 mm under the same filler loading condition. This enhanced performance has been attributed to the improved impedance matching and increased dielectric loss contributed by the incorporation of CuInS 2 . Furthermore, the multilayered sheet-like structure formed by the two components has established a continuous conductive network, which has effectively dissipated electromagnetic energy through multiple reflections and conductive loss. Ultimately, this work has provided a viable strategy for developing high-efficiency absorbers based on Ta 2 CT x MXene materials.
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高影响因子
SOLAR ENERGY
·
2021
·
IF 5.742
Sike Yang,Wenbo Ma,Zhenlong Zhang,Jichun Zhu,Yuefeng Liu,Huafang Zhang,Yanli Mao
In this paper, CuInS 2 nanocrystals were prepared and used to fabricate inverted perovskite solar cells (PSCs) with the CuInS 2 nanocrystals as a hole transport material (HTM). The average power conversion efficiency (PCE) of the PSCs with CuInS 2 is 16.22%, which is close to the average PCE of the NiO-based devices (17.32%). The PCE of the champion PSC with CuInS 2 has been reached 17.34%, and that of the control PSC with NiO (18.33%). Moreover the inverted PSCs with CuInS 2 present an enhanced stability compared with the NiO-based control devices. The PCE of the inverted PSCs based on CuInS 2 maintains 70% of the original when they are placed in ambient atmosphere for 96 h, while the PCE of the control devices with NiO decreased to 60% of the beginning. These results indicate that CuInS 2 nanocrystal is an excellent HTM which could be applied to assemble the inverted PSCs.
研究领域:
材料科学
·
能源科学
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高影响因子
Applied Materials Today
·
2022
·
IF 8.663
Enhui Ma,Guolong Sun,Fanglin Duan,Hongguang Wang,Hong Wang
A direct Z-scheme heterojunction coupling hierarchical nanosheet MoS 2 nanotubes with CuInS 2 quantum dots was successfully prepared to fabricate MoS 2 NTs/CuInS 2 QDs photoanodes for enhanced photoelectrocatalytic (PEC) activity. The MoS 2 NTs with stacked nanosheets and tubular structure have high surface area and abundant basal edges, which can create more active reaction sites. Simultaneously, the continuous and broad photo-absorption range of MoS 2 NTs improved the utilization of visible-light and increased the separation efficiency of photo-induced electron-hole pairs. The integration of MoS 2 NTs with CuInS 2 QDs onto Cu foil yielded direct Z-scheme heterojunction photoanode. The formation of Z-scheme heterojunction inhibited the recombination of photo-induced electron-hole pairs and produced more active electrons and holes to facilitate the generation of highly active species. Under visible light illumination, the prepared MoS 2 NTs/CuInS 2 QDs photoanode showed superior PEC activity by applying a suitable bias voltage. In PEC process, the generated holes, hydroxyl radicals and superoxide radicals with strong oxidative were employed to achieve highly efficient degradation of tetracycline. The prepared photoanode exhibited high stability, reusability, and broad application potential in PEC degradation of organic pollutants. Moreover, a possible mechanism of the transfer pathway of photo-induced electron-hole pairs on the MoS 2 NTs/CuInS 2 QDs photoanode was proposed based on a direct Z-scheme heterojunction.
研究领域:
材料科学
·
环境科学
·
光电化学
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高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Xiaoxue Li,Keyu Xie,Long Song,Mengjia Zhao,Zhipan Zhang
The effective separation of photogenerated electrons and holes in photocatalysts is a prerequisite for efficient photocatalytic water splitting. CuInS2 (CIS) is a widely used light absorber that works properly in photovoltaics but only shows limited performance in solar-driven hydrogen evolution due to its intrinsically severe charge recombination. Here, we prepare hierarchical graphitic C3N4-supported CuInS2 (denoted as GsC) by an in situ growth of CIS directly on exfoliated thin graphitic C3N4 nanosheets (g-C3N4 NS) and demonstrate efficient separation of photoinduced charge carriers in the GsC by forming the Z-scheme system for the first time in CIS-catalyzed water splitting. Under visible light illumination, the GsC features an enhanced hydrogen evolution rate up to 1290 μmol g–1 h–1, which is 3.3 and 6.1 times higher than that of g-C3N4 NS and bare-CIS, respectively, thus setting a new performance benchmark for CIS-based water-splitting photocatalysts.
研究领域:
材料化学
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光催化
·
能源化学
·
纳米材料
·
可持续能源
·
半导体物理
·
表面科学
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DOI
高影响因子
Nano Materials Science
·
2024
·
IF 12.6
Kai Wang,Keyang Zhao,Sheng Cao,Zilong Li,Weiyou Yang,Jinju Zheng,Hui Fu
Copper indium sulfur-based quantum dots (CIS QDs) are classified as one of well-known ternary I-III-VI semiconductors, which have exciting promising applications in display and lighting devices, due to their unique merits such as non-toxicity, stability, and high photoluminescence quantum yield (PL QY). However, the emission full width at half maximum (FWHM) of CIS-based QDs typically extends to ∼140 nm, fundamentally limiting their use in high-color-purity light emitting. Herein, we report the rationally-designed CIS QDs with high efficiency and narrowband emission by chemical stoichiometry and gradient shell engineering, based on precisely controlling the dynamic growth and stoichiometric ratio. It is found that the accurate control on the growth kinetics and stoichiometry during the nucleation process of CIS QDs could enhance the crystallinity through gradual and organized crystalline growth, which effectively mitigates the formation of In Cu substitutional and Cu vacancies, thus suppressing the defect emission. Furthermore, the introduced InS x /Zn x Ga 1-x S gradient shell on the surface of QDs cores could reduce the strain within interface, thereby eliminating the non-radiative recombination caused by the surface defects resulted from interface strain. As a result, a remarkable PLQY of 89% is achieved for the QDs. More importantly, their FWHM decreases to 70 nm, which is the narrowest one for CIS-based QDs ever reported, representing their bright future to be applied in high-definition display devices.
研究领域:
材料科学
·
纳米技术
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高影响因子
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