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RSC Advances · 2022 ·Vol. 12 ·期 21 ·12997-13002 · IF 4.036

Nitrogen-doped mesoporous carbon supported CuSb for electroreduction of CO2

Yue Hou,Cheng-Jie Jiang,Ying Wang,Jing-Wei Zhu,Jia-Xing Lu,Huan Wang

The construction of an efficient catalyst for electrocatalytic reduction of CO2 to high value-added fuels has received extensive attention. Herein, nitrogen-doped mesoporous carbon (NMC) was used to support CuSb to prepare a series of materials for electrocatalytic reduction of CO2 to CH4. The catalytic activity of the composites was significantly improved compared with that of Cu/NMC. In addition, the Cu content also influenced the activity of electrocatalytic CO2 reduction reaction. Among the materials used, the CuSb/NMC-2 (Cu: 5.9 wt%, Sb: 0.49 wt%) catalyst exhibited the best performance for electrocatalytic CO2 reduction, and the faradaic efficiency of CH4 reached 35%, and the total faradaic efficiency of C1–C2 products reached 67%.

CAS / MDL: 9003-11-6

研究领域: 材料科学 · 电化学 · 催化反应

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Small · 2024 · IF 13

Distinctive p-d Orbital Hybridization in CuSb Porous Nanonetworks for Enhanced Nitrite Electroreduction to Ammonia

Min Yan,Ranran Wei,Ruifan Zhang,Xiaoying Zhang,Shiqin Sun,Xuewen Wei,Xianlong Wang,Shuli Yin,Yinglong Wang

Electrochemical nitrite reduction reaction ( NO 2 − RR ${\mathrm{NO}}_{\mathrm{2}}^{\mathrm{ - }}{\mathrm{RR}}$ ), as a green and sustainable ammonia synthesis technology, has broad application prospects and environmental friendliness. Herein, an unconventional p - d orbital hybridization strategy is reported to realize the fabrication of defect-rich CuSb porous nanonetwork (CuSb PNs) electrocatalyst for NO 2 − RR ${\mathrm{NO}}_{\mathrm{2}}^ - {\mathrm{RR}}$ . The crystalline/amorphous heterophase structure is cleverly introduced into the porous nanonetworks, and this defect-rich structure exposes more atoms and activated boundaries. CuSb PNs exhibit a large NH 3 yield ( r N H 3 ${{r}_{{\mathrm{N}}{{{\mathrm{H}}}_{\mathrm{3}}}}}$ ) of 946.1 µg h −1 m cat − 1 ${\mathrm{m}}_{{\mathrm{cat}}}^{ - {\mathrm{1}}}$ and a high faradaic efficiency (FE) of 90.7%. Experimental and theoretical studies indicate that the excellent performance of CuSb PNs results from the defect-rich porous nanonetworks structure and the p-d hybridization of Cu and Sb elements. This work describes a powerful pathway for the fabrication of p - d orbital hybrid defect-rich porous nanonetworks catalysts, and provides hope for solving the problem of nitrogen oxide pollution in the field of environment and energy.

CAS / MDL: 50-81-7 10025-91-9 64-17-5 12125-02-9 7447-39-4 68-12-2 7664-38-2 304-59-6 16940-66-2 63-74-1 7632-00-0 7757-82-6

研究领域: 材料科学 · 环境科学 · 电化学

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Journal of Physical Chemistry C · 2015 · IF 4.772

Large-Scale Synthesis of Single Crystalline CuSb(SxSe1–x)2 Nanosheets with Tunable Composition

Yejun Zhang,Lun Li,Delu Li,Qiangbin Wang

Alloying nanocrystals with multicomponent has been an effective way to tune the band gap of semiconductor nanocrystals, which promises their wide applications in optoelectronics, photovoltaics, etc. However, colloidal synthesis of homogeneous phase multicomponent nanocrystals in a large scale remains great challenge. Here, we declare the successful preparation of single-crystalline quaternary CuSb(SxSe1–x)2 nanosheets in a facile one-pot reaction with yield >3 g. The molar ratio of S/(S + Se) in CuSb(SxSe1–x)2 could be easily tuned from 1.5% to 13.7% by increasing the reaction temperature which enhances the reactivity of S source in the reaction, and accordingly, the band gap of the obtained CuSb(SxSe1–x)2 varies from 0.9 to 1.1 eV.

CAS / MDL: 10025-91-9 112-90-3 7446-08-4

研究领域: 材料科学 · 纳米技术

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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING · 2025 · IF 4.6

Regulating preparation process of CuSb(S, Se)2 absorber layer for thin films solar cells via a low-toxic solution method

Rui Wang,Yanchun Yang,Guonan Cui,Lulu Bai,Zhihui Gong,Chengjun Zhu

CuSb(S, Se) 2 (CASSe) is known to have great potential for copper-based low-cost thin-film solar cells due to its excellent stability, earth-abundant raw materials, and suitability for the low-temperature preparation process. In this work, CASSe thin-film solar cells were prepared using the green n-butylammonium butyrate ionic solution-based method for the first time. The phase purity, crystallinity , morphology, and electrical properties of films prepared at different conditions (sintering and selenization conditions) were studied. With the help of the XRD , Raman spectra , SEM, and c-AFM measurements, the optimal preparation of CASSe thin film is confirmed at 230 °C for 3 min (sintering condition) and 390 °C for 20 min (selenization condition). Using glass/Mo/CuSb(S, Se) 2 /CdS/i-ZnO/ITO/Al as the structure of the device, the corresponding thin film solar cell can be fabricated, which presents a photoelectric conversion efficiency (PCE) of 0.14 %. Although the performance of the device is poor, our conclusions are meaningful in the development of CASSe material, supplementing the blank of preparing CASSe thin film solar cells by the green solution-based method.

CAS / MDL: 107-92-6 109-73-9 6046-93-1 64-17-5

研究领域: 材料科学 · 新能源技术 · 半导体薄膜 · 光伏器件

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Nitrogen-doped mesoporous carbon supported CuSb for electroreduction of CO2

Distinctive p-d Orbital Hybridization in CuSb Porous Nanonetworks for Enhanced Nitrite Electroreduction to Ammonia

Large-Scale Synthesis of Single Crystalline CuSb(SxSe1–x)2 Nanosheets with Tunable Composition

Regulating preparation process of CuSb(S, Se)2 absorber layer for thin films solar cells via a low-toxic solution method