ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Wenjing An,Weiping Yang,Liqing Shi,Kejiang Qian,Huichao Suo,Peipei Ma,Tingzhao Xin,Jinhao Liu,Shuangxi Liu,Lan-Lan Lou,Kai Yu
Catalytic conversion of levulinic acid (LA) to γ-valerolactone (GVL) is one of the key reactions of biomass utilization, but the relatively high reaction temperature and H2 pressure always introduce safety and energy consumption issues. In this work, a photocatalytic transfer hydrogenation method was applied to achieve the hydroconversion reaction from LA to GVL under green and mild conditions using non-noble metal Bi2S3 materials as the catalyst. Up to 74.8% GVL yield and 76.3% selectivity can be achieved after 36 h of irradiation using the spherical Bi2S3 as the catalyst and isopropanol as the hydrogen source, which is significantly higher than any reported results on non-noble metal photocatalysts. The structural characterization and density functional theory calculation results indicated that the appropriate band position and lower adsorption energy toward LA rendered the spherical Bi2S3 catalyst highly reactive. Based on the results of electron paramagnetic resonance and density functional theory calculations, a reasonable photocatalytic transfer hydrogenation reaction pathway of LA to GVL was proposed. Bi2S3-photocatalyzed dehydrogenation of isopropanol generates H radicals, which react with LA adsorbed on the surface of Bi2S3 to form GVL through a hydrogenation-esterification process. The presence of Bi2S3 greatly promotes the adsorption of LA and reduces the energy barrier for LA hydrogenation.
研究领域:
化学工程
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可再生能源
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催化科学
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 21
·16239-16249
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IF 3.84
Hong-Peng Jiao,Xiang Yu,Zhao-Qing Liu,Pan-Yong Kuang,Yuan-Ming Zhang
To overcome the drawback of low photocatalytic efficiency brought by fast electron–hole recombination and narrow photoresponse range, the heterostructured Bi2S3/BiOBr microspheres were designed and synthesized via a facile one-pot solvothermal method. The as-prepared heterostructured Bi2S3/BiOBr photocatalyst exhibits significantly enhanced photoelectrochemical performance and photocatalytic activity for decomposing rhodamine B (RhB) and Brilliant ponceau 5R (BP) compared with pure BiOBr under visible light irradiation, which could be mainly attributed to the formation of a heterojunction in the Bi2S3/BiOBr interface, which can efficiently facilitate the separation of photogenerated electron–hole pairs. Furthermore, a terephthalic acid photoluminescence (TA-PL) probing test and radical trapping experiments demonstrate that the h+ and ·O2− radicals are the dominant reactive species while ·OH radicals could be neglected. In addition, the possible enhanced photocatalytic mechanism is proposed on the basis of the calculated energy band positions and radical trapping experiments.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2019
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IF 3.674
Xu Yan,Ziyang Wu,Peipei Yang,Yanli Mao,Biao Liu,Yong Zhao,Hao Shen,Dongliang Wang
In this article, novel Bi 2 S 3 /Bi 4 O 5 I 2 heterojunction was synthesized by a facile ion-exchange method with thioacetamide as sulfur source. Multiple techniques were employed to analyze the structure and chemical composition of prepared samples. The photocatalytic performance of the Bi 2 S 3 /Bi 4 O 5 I 2 heterojunction samples was investigated by the photodegradation of methyl orange under visible light. The Bi 2 S 3 /Bi 4 O 5 I 2 heterojunction of S/BOI-2 sample presented the highest activity constant among all samples. Additionally, the photocatalytic mechanism is proposed according to the trapping experiments and electron spin resonance (ESR) results.
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
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 12
·5456-5464
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IF 2.7
Yanhua Gao,Dongfeng Zhang,Hongya Liu,Ying Chen,Yuning Liang,Mingchun Bi,Juan Ren,Zhihua Wang
Based on the anion exchange strategy, a novel Bi2S3/BiOCl0.1Br0.9 S-scheme heterojunction was prepared via a facile one-step low-temperature water bath method for the first time. In this process, 2D Bi2S3 nanosheets were controllably grown on the surface of a 3D hollow BiOCl0.1Br0.9 solid solution. Under visible light irradiation, the as-prepared 3BS-BCB exhibited a remarkable photocatalytic degradation efficiency of 99.67% toward rhodamine B (Rh B) within 140 min, which is approximately 3.57 times higher than that of the BiOCl0.1Br0.9 solid solution alone. The enhanced photocatalytic performance is attributed to the formation of an interfacial electric field (IEF), which accelerated the separation rate of photoinduced electron–hole pairs and coupled the strong redox ability of both the semiconductors. Moreover, the photosensitive effect of Bi2S3 extended its light absorption range, increasing the yield of photogenerated charge carriers. Such thermodynamic and kinetic compatibility is the fundamental reason for the enhanced photocatalytic efficiency. This study provides new insights into the design of S-scheme heterojunction photocatalysts with visible light response and high redox ability based on wide-band gap semiconductors.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yichao Wang,Zipeng Xing,Huanan Zhao,Sijia Song,Meijie Liu,Zhenzi Li,Wei Zhou
Oxygen-doped MoS 2 @In 2 S 3 /Bi 2 S 3 core-shell dual Z-scheme tandem heterojunctions are fabricated via two-step hydrothermal methods. In 2 S 3 and Bi 2 S 3 nanosheets grow on the outer surface of oxygen-doped MoS 2 spheres, and the tight interface between the spheres could ensure stable electron transfer. MoS 2 with oxygen defects could inhibit the recombination of photo-induced electron-hole pairs. The unique core-shell structure increases the interface area and provides adequate surface reactive sites for the reactants. The resultant MoS 2 @In 2 S 3 /Bi 2 S 3 shows broad-spectrum response and excellent photothermal effect, which is beneficial to trigger the near-field temperature rise and promote the photocatalytic process. The MoS 2 @In 2 S 3 /Bi 2 S 3 exhibits excellent photocatalytic H 2 evolution rate of 973.42 μmol h −1 g −1 , and the degradation efficiency of tetracycline within 90 min is 99.6%, which is ∼ 10 times higher than that of pristine MoS 2 . It can be ascribed to the unique core-shell dual Z-scheme tandem heterojunction structure facilitates the transfer and spatial separation of photogenerated electron-hole pairs, and greatly prolongs the carrier lifetime. In addition, the long-term stability indicates the potential applications due to the core-shell dual Z-scheme tandem structure inhibiting the photocorrosion of sulfides.
研究领域:
材料科学
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环境科学
·
化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 5
·1-10
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IF 2.8
Kan Hao,Yang Wenhao,Guo Zilong,Li Min
Bismuth sulfide (Bi 2 S 3 ) is known for its remarkable sensitivity and stability, making it as an ideal material for gas sensor. Here, we present a highly sensitive room-temperature NO 2 gas sensor by controlling the Bi 2 S 3 nanorods morphology through hot injection method with varying Bi/S ratios (Bi/S = 1, Bi/S = 2, Bi/S = 4). The as-synthesized samples were subsequently spin-coated onto ceramic substrates to fabricate chemo-resistive gas sensors. TEM and XPS analyses revealed that with the increasing Bi/S ratio in the precursors leading to the nanorods aspect ratios enhancing and the generation of S vacancies facilitating. As a result, Bi 2 S 3 nanorods with a Bi/S ratio of 4 exhibited higher carrier mobility and provided more accessible sites for gas molecules. The optimal sensor (Bi/S = 4) showed an impressive response of 12.2 for 10 ppm NO 2 , which is 4 times higher than the device of Bi/S = 1. It also demonstrated a fast response/recovery time of 39 s/696 s and a lower detection limit down to 120 ppb. These findings highlight the excellent gas sensitivity performance of Bi 2 S 3 nanorods at room temperature and their potential for the development of energy-efficient and cost-effective gas sensors.
研究领域:
材料科学
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纳米技术
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气体传感器
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环境监测
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Biao Guo,Xianyu Wang,Xia Wu,Xinying Sun,Xinyuan Li,Xinxin Liu,Lijing Zhou,Zhen Zhao
The construction of S-scheme heterojunctions with oxygen vacancies (OVs) is an effective strategy to enhance the photocatalytic activity. In this pioneering study, we successfully fabricated Bi12O17Cl2/Bi2S3 S-scheme heterojunctions with abundant OVs (ROV-BOC/BS) using an anion exchange method. The in situ growth of Bi2S3 (BS) nanorods on OVs-rich Bi12O17Cl2 (ROV-BOC) nanosheets resulted in an interconnected reticulated structure. This structure not only increased the specific surface area of the composite but also established a tightly bound heterojunction, further enhancing the OVs content in the composites. The OVs-induced defect levels provide additional channels for photogenerated charge migration. The synergy between the heterojunction and OVs improved the light absorption and carrier separation efficiency. Consequently, the optimized ROV-BOC/BS-0.1 achieved 95.52% Cr(VI) removal efficiency within 120 min, with apparent reaction rate constants 5.39 and 23.86 times higher than those of pure ROV-BOC and BS, respectively. This investigation provides crucial guidance for designing novel S-scheme heterojunction photocatalysts with abundant OVs.
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
Journal of Energy Storage
·
2023
·
IF 9.4
Xin Xu,Shang Wu,Yang Liu,Chaoyang Liu,Xin Sun,Shuo Tian,Lan Wu,Yuzhi Sun,Zhichao Wang,Quanlu Yang
The tubular microsphere structure is an effective structure for asymmetric supercapacitors due to its high specific surface area and porosity. It can slow down the volume shrinkage caused by redox process. In this paper, tubular-like NiMoO 4 ·xH 2 O microspheres were designed to reach a high specific capacity. The NiMoO 4 ·xH 2 O was prepared by hydrothermal method and subsequent annealing treatment showed a tubular microsphere structure with many particles uniformly distributed. And its specific capacity is 943 F g −1 at 1 A·g −1 and capacity retention is 73.4 % after 3000 cycles. The Bi 2 S 3 /C was selected as negative material to build an asymmetric supercapacitor (battery-type device). It exhibited an impressive specific capacity (419 F g −1 at 1 A g −1 ). It was worth noting that the battery-type devices built with NiMoO 4 ·xH 2 O and Bi 2 S 3 /C can achieve a specific energy of 27.1 Wh kg −1 at 2456.9 W kg −1 and capacity retention of 69.2 % after 5000 cycles. It was shown that NiMoO 4 -xH 2 O and Bi 2 S 3 /C as electrode materials have great potential and can enhance the energy storage application of supercapacitors.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Chongfei Yu,Pengyan Yang,Luna Tie,Siyu Yang,Shuying Dong,Jingyu Sun,Jianhui Sun
Herein, we demonstrate the design and fabrication of β-Bi 2 O 3 @ Bi 2 S 3 hollow microspheres with sheet-like hierarchical nanostructures targeting an advanced visible-light-responsive photocatalytic system. In comparison with pure Bi 2 S 3 and β-Bi 2 O 3 , the as-obtained β-Bi 2 O 3 @Bi 2 S 3 heterojunction photocatalyst exhibits a markedly enhanced sunlight photocatalytic activity towards the photo-degradation of rhodamine B. Following, the property of the β-Bi 2 O 3 @Bi 2 S 3 on the Cr 6+ photocatalytic reduction was then evaluated. Operating conditions such as β-Bi 2 O 3 @Bi 2 S 3 mass, tartaric acid concentration, and initial Cr 6+ concentration were analyzed. The results showed that a suitable reduction condition was selected as, β-Bi 2 O 3 @Bi 2 S 3 dosage 25 mg, initial concentration 20 mg·L −1 and molar ratio of Cr 6+ /tartaric acid 1:20. The outstanding photocatalytic performances of the hybrid photocatalyst are mainly attributed to the reduced recombination rates of photo-generated electrons/holes, enhanced light harvesting, increased active sites as well as the improved photo/chemical stability. Moreover, the photocatalytic mechanism of β-Bi 2 O 3 @Bi 2 S 3 for oxidation of RhB and reduction of Cr 6+ was investigated in detail. The enhanced photocatalytic activity and excellent chemical stability render the thus-fabricated heterostructure a promising candidate to remediate aquatic contaminants and meet the demands of future photocatalytic materials.
研究领域:
材料科学
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环境科学
·
化学工程
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DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 15
·8936-8940
·
IF 3.119
Chong Li,Hao Kan,Jingting Luo,Chen Fu,Jian Zhou,Xueli Liu,Wen Wang,Qiuping Wei,Yongqing Fu
Low dimensional Bi2S3 materials are excellent for use in photodetectors with excellent stability and fast response time. In this work, we developed a visible light sensor with good performance based on surface acoustic wave (SAW) devices using Bi2S3 nanobelts as the sensing materials. The SAW delay-line sensor was fabricated on ST-cut quartz with a designed wavelength of 15.8 microns using conventional photolithography techniques. The measured center frequency was 200.02 MHz. The Bi2S3 nanobelts prepared by a facile hydrothermal process were deposited onto SAW sensors by spin-coating. Under irradiation of 625 nm visible light with a power intensity of 170 μW cm−2, the sensor showed a fast and large response with a frequency upshift of 7 kHz within 1 s. The upshift of the frequency of the SAW device is mainly attributed to the mass loading effect caused by the desorption of oxygen from the Bi2S3 nanobelts under visible light radiation.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Meng Li,Jing Zhou,Weiji Sun
Pyroelectric catalysis has emerged as a promising approach for sustainable hydrogen generation, yet its efficiency is often constrained by limited charge separation and poor thermal energy conversion. Sulfur vacancies introduce defect energy levels within the bandgap, significantly broadening the light absorption into the near-infrared region. This enhancement in light harvesting effectively improves the photothermal conversion efficiency, thereby creating a stronger driving force for the pyroelectric effect. Furthermore, lattice distortion induced by vacancies creates localized polarization centers, which leads to a remarkable improvement in the pyroelectric response of Bi 2 S 3 -V S . The COMSOL simulation results demonstrate a nonlinear correlation between temperature gradient fluctuations and the generated pyroelectric potential. This work provides fundamental insights into defect-mediated pyroelectric effects and offers a viable strategy for designing efficient pyroelectric catalysts through rational defect engineering.
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Qin Lei,Jiaxin Li,Junjie Lei,Bo Hong,Xiaoling Li,He Li,Yiwen Wan
In this study, a simple wet chemical method was used to prepare p-n heterojunction photoelectric composites (Bi 2 S 3 @g-C 3 N 4 ). The p-n junctions were formed to facilitate charge transfer as well as strongly suppress electron-hole pair recombination, thus enhancing the photoelectrochemical (PEC) characteristics. Particularly, according to the transient surface photocurrent response, the photocurrent intensity of the prepared composites was 2.98 times higher relative to the pristine g-C 3 N 4 material. The photocurrent signal revealed the prepared novel PEC sensor composed of Bi 2 S 3 @g-C 3 N 4 composite material, which can be used for sensitively and selectively detecting chlorpyrifos. This method presented a linear change from 50 ng/mL to 0.1 mg/mL of chlorpyrifos under the optimal conditions. The linear regression equation was I(μA)=0.8546-0.1558lgC(mg/mL) (R 2 =0.9758) and the detection limit was 0.03 ng/mL (S/N=3). In addition, the novel sensing platform with high selectivity could assist in rapidly and effectively detecting chlorpyrifos in environmental analysis.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
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