APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Jiliang Ma,Aohua Li,Qiong Liu,Lei Chen,Min Hong,Runcang Sun
The photocatalytic conversion of biomass utilizing two-dimensional (2D) MBene as co-catalyst represents an exemplary approach for the sustainable production of syngas and lactic acid, capitalizing on the renewable resources of biomass carbon and solar energy. In this study, CrB MBene was synthesized via in-situ exfoliation in an HCl aqueous solution and subsequently integrated with Cd 0.8 Zn 0.2 S through an in-situ growth strategy, aiming to facilitate the photocatalytic co-production of lactic acid and syngas. Notably, the CZS/CrB-10 variant demonstrated a remarkable 12.3-fold enhancement in the hydrogen evolution rate (1746.6 μmol g −1 h −1 ) compared to standalone Cd 0.8 Zn 0.2 S, highlighting the exceptional co-catalytic efficiency and air stability of CrB MBene. Under optimal experimental conditions, the lactic acid yield and CO evolution rate attained 75.4 % and 917.8 μmol g −1 h −1 , respectively. The incorporation of CrB MBene as a co-catalyst was found to significantly improve sunlight utilization, enhance the separation and transfer of photogenerated charge carriers, and mitigate the recombination of electrons and holes. This research underscores the potential of CrB MBene as a promising and cost-effective co-catalyst, with implications for advancing artificial photosynthetic systems and the integration of photocatalytic biomass refining with water splitting technologies.
研究领域:
材料科学
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可再生能源
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yun Tian,Luowen Xu,Shuo Ning,Changfu Wang,Yun Wang,Hao Jiang,Dingzhong Yuan,Fengtao Yu,Yan Liu
Photocatalysis has emerged as a extremely promising green technology for the treatment of uranium-containing wastewater. This study focuses on the fabrication of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites with Schottky junctions through the in-situ growth of Cd 0.8 Zn 0.2 S on Ti 3 C 2 T x nanosheets, enabling efficient photoreduction of U(VI) without the requirement of sacrificial agents. The results demonstrate that the Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites achieve remarkable 99.48 % U(VI) reduction efficiency within 60 min in a 100 ppm uranium solution. Furthermore, the removal rate remains above 90 % after five cycles. The formation of Schottky heterojunctions by Ti 3 C 2 T x and Cd 0.8 Zn 0.2 S leads to the generation of an internal electric field that significantly promotes the rapid separation and transfer of photogenerated carriers, thereby enhancing the photocatalytic reduction efficiency of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S-3:100 (TC/CZS-3:100). A considerable amount of electrons accumulate on Ti 3 C 2 T x via the Schottky barrier, effectively facilitating the reduction of U(VI) to U(IV). As a co-catalyst, Ti 3 C 2 T x enhances the photocatalytic performance and stability of Cd 0.8 Zn 0.2 S. Moreover, the practical application in the waste liquid of rare earth tailings reveals that the removal rate can be as high as 91.24 %. This research is of significant value in the development of effective photocatalysts for the elimination of uranium from wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 13
·10657-10668
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IF 2.22
Li Lingjiao,Xu Jing,Li Xuanhao,Liu Zeying
Previous reports indicate that the catalyst Cd x Zn 1− x S shows good activity and reliability in the process of photocatalytic hydrogen production. However, it is still a challenge to design a cost-effective catalyst to replace the traditional Cd x Zn 1− x S. In this work, Roman broccoli Cd 0.8 Zn 0.2 S-2 was successfully prepared through reasonable adjustment and control of the amount of raw materials. In the photocatalytic hydrogen evolution test, the amount of hydrogen evolution of CZS-2 was 1.24, 1.34, 2.06, and 2.24 times that of CZS-1, CZS-3, CZS-4, and CZS-5, respectively. This is because Cd 0.8 Zn 0.2 S-2 has more excellent synergy inside. Theoretical and experimental studies show that, based on rational design, the optical and electrical properties of the CZS-2 structure have been substantially improved (based on UV–Visible diffusion and photoluminescence). The mechanism of the study shows that the photocatalytic hydrogen evolution activity of CZS-2 is effectively improved due to the favorable energy band of effective charge transfer inside CZS-2. In this work, Roman broccoli-like CZS-2 provides a new research direction for photocatalytic water decomposition.
研究领域:
材料科学
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光催化
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能源转换
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DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 3
·期 4
·1696-1702
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IF 0
Zhonghui Han,Gang Chen,Chunmei Li,Yaoguang Yu,Yansong Zhou
The one-dimensional (1D) cubic Cd0.8Zn0.2S solid-solution nanowires are first prepared by the “levelling effect” of thioglycolic acid (TGA) in a solvothermal process. It exhibits the enhanced transfer and separation efficiency of carriers to improve the photocatalytic H2-production activity. TGA not only serves as the sulphur source but also plays a template medium agent role. Furthermore, no TGA selectivity for diverse solvents to prepare 1D Cd0.8Zn0.2S solid solutions suggests that it also may be extended to the preparation of other 1D metal sulphide solid solutions in diverse solvents.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Sixin Wang,Xiaoli Dong,Nan Zheng,Yu Wang,Jiefeng Gao
Constructing photocatalyst with high visible light utilization efficiency and easy recyclability is still challenging in view of practical applications. Herein, we constructed a novel Cd 0.8 Zn 0.2 S/SnO 2 heterojunction on flexible PAN nanofiber substrates via a simple solvothermal route as a flexible and easily recycled photocatalyst. This newly developed PAN/Cd 0.8 Zn 0.2 S/SnO 2 nanofibrous mat had excellent photocatalytic activity towards Rhodamine B (RhB) under visible light driving, and RhB could be degraded 98 % after 120 min. The efficient photocarrier separation endowed by Cd 0.8 Zn 0.2 S/SnO 2 heterojunction plays a significant role in improving photocatalytic property. Meanwhile, the obtained PAN/Cd 0.8 Zn 0.2 S/SnO 2 nanofibrous mat had good structural stability and cycling performance. More importantly, relative to the traditional suspended nanoparticles , the film-like PAN/Cd 0.8 Zn 0.2 S/SnO 2 exhibit outstanding flexibility and self-supporting characters, allowing them to be effortlessly separated and removed from service environment. This work provides an excellent strategy for designing flexible and recyclable nanofiber based photocatalysts with high photocatalytic activity , which is expected to have broad application prospects in the field of water treatment.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Aili Liu,Pengsheng Ling,Guodong Yu,Huile Jin,Shun Wang,Jichang Wang
A class of urchin-shaped nanocomposites composed of MoS 2 and Cd 0.8 Zn 0.2 S nanoparticles were fabricated in this study, yielding the highest hydrogen evolution rate of 1401 μmol/g/h when they are applied as the photocatalysts of water splitting reaction. The greatly enhanced photocatalytic activity could last over 24 h. Such great improvement in the photocatalytic activity, which is nearly 11 times higher than that of pure CdS and 9 times of Cd 0.7 Zn 0.3 S, and 1.7 times of MoS 2 –CdS, may be attributed to that the one-step synthetic procedure resulted in tighter interfacial contact of the urchin-like MoS 2 –Cd 0.8 Zn 0.2 S composites. Specifically, solvothermal reaction of molybdenum(V) dimethyldithiocarbamate , diethyldithiocarbamato cadmium(II) and zinc di(benzimidazol-2-yl) disulphide took place simultaneously in one-pot. Characterizations with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM) etc. illustrate that a class of novel urchin-shaped nanocomposite composed of MoS 2 and Cd 0.8 Zn 0.2 S nanoparticles were formed in this one-pot synthesis. This study therefore presents a simple and effective route to prepare chalcogenide-based photocatalysts for more efficient production of hydrogen from water.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
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