ELECTROCHIMICA ACTA
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2019
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IF 5.383
Yao Zhang,Wenkai Gao,Shaowei Ji,Danyang Zhao,Xinyu Bai,Huaiguo Xue,Nengqin Jia
An ingeniously conceived molecularly imprinted photo-induced sensor with polymethacrylic acid (PMAA) embedded into the urchin-shaped Bi 2 S 3 architecture was devised, which was dedicated to sensitive exploring the sulfadiazine (SDZ). One critical procedure is the identification of PMAA and SDZ molecules by hydrogen bonding , and creates copious particular recognition sites upon the elution of SDZ molecules. It is worth mentioning that urchin-shaped Bi 2 S 3 of cuboid nanorods compact stacked can provide a large specific surface area and enable more SDZ molecularly imprinted polymers to be attached or embedded in it. Accordingly, when encountering SDZ molecules again, a sensitive augment of photocurrent signal is captured, which reveals outstanding linear relationship in the concentration domain 0.003–1.8 mg L −1 and the detection limit is calculated to be 9.06 × 10 −8 g L −1 (S/N = 3). Moreover, it is gratifying that as-prepared photo-induced sensor exhibits marked selectivity for the analysis of SDZ when exposed certain interfering species with similar configurations. Considerable reproducibility and stability in conjunction with tap water and aquatic water as actual samples of the fabricated photo-induced sensor are further evaluated, corroborating the prominent photoelectrochemical performances. The integrated photo-induced with molecularly imprinted approach will be utilized to probe into these vast unexplored environmental contaminants in this specific, effective and rapid detection manner.
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JOURNAL OF HAZARDOUS MATERIALS
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2017
·
IF 6.065
Sheng Luo,Fan Qin,Yin’an Ming,Huiping Zhao,Yunling Liu,Rong Chen
Hazardous hexavalent chromium removal from wastewater is an urgent issue in industry environmental pollution. In this work, hollow Bi 2 S 3 nanospheres have been successfully synthesized from unique Bi 2 O 3 porous nanospheres via Kirkendall effect through hydrothermal process. It was found that the sulfur source and the initial Bi 2 O 3 templates played key roles in the formation of the uniform morphologies and structures through an anion exchange process. Compared with other Bi 2 S 3 samples, the synthesized hollow Bi 2 S 3 nanospheres exhibited much enhanced photocatalytic ability for Cr(VI) photoreduction. XPS analysis demonstrated that Cr(VI) was reduced to less harmful Cr(III) species over hollow Bi 2 S 3 nanospheres under visible-light irradiation. More importantly, the hollow Bi 2 S 3 nanospheres remained high efficiency and good stability in the recycling Cr(VI) photoreduction, and exhibited remarkable Cr(VI) removal ability in actual electroplating industry wastewater treatment.
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MATERIALS & DESIGN
·
2024
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IF 7.6
Cuilu Xi,Jiang Xu,Haonan Chen,Jiawen Wang,Xinna Zhang,Yinyan Li,Gongxun Bai,Hui Xu,Zhen Xiao,Shiqing Xu
Among numerous polluting compounds, the organic dyes and antibiotics are two servious factors causing water pollution. Hence, it is urgent to find a fast and safe way to degrade waste water in a sustainable approach. Here, ferroelectric heterostructure based on 2D Bi 2 MoO 6 nanosheets and Bi 2 S 3 nanorods has been prepared by a two-step solvothermal method for the reduction of organic dyes and antibiotics. Due to the energy band balance between Bi 2 S 3 and Bi 2 MoO 6 , the formed type-II heterostructure can populate charge transfer at the junction and effectively inhibit electron-hole recombination. Under ultrasonic stimulation, catalytic active sites of a Bi 2 MoO 6 /Bi 2 S 3 heterostructure for pollutant degradation can be generated through rapid charge transfer activation, thus enhancing the catalytic degradation effect of organic dyes and antibiotics. The Bi 2 MoO 6 /Bi 2 S 3 heterostructure not only has good degradation effect, but also shows better stability. This work opens up new avenues for designing highly-efficient catalysts, which is of importance for wastewater degradation and energy-saving applications.
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ACS Sustainable Chemistry & Engineering
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2025
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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.
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CRYSTAL GROWTH & DESIGN
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2026
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IF 3.6
Hui Wang,Yuxuan Pan,Huishan Liang,Mingyi Dai,Hao Xiang,Yinbao Tong,Yike Sui,Lei Li,Changcun Han
The development of efficient photocatalytic materials is the key to promoting the advancement and application of photocatalytic technology. Bi2S3, a relatively narrow bandgap semiconductor, can absorb visible light and even near-infrared light. However, the fast recombination rate of photogenerated electron–hole pairs, limited surface active sites, and susceptibility to photocorrosion of pure Bi2S3 severely restrict its photocatalytic efficiency. In this paper, carbon-doped sulfur-rich defective hollow Bi2S3 nanorods were prepared in one step using Bi-MOF as the precursor. The microcrystalline structure and defect structure were regulated by adjusting the hydrothermal reaction time. The ammonia production rate of hollow Bi2S3-2 under full sunlight was approximately 147.78 μmol·h–1·g–1. The superior photocatalytic activity of hollow Bi2S3-2 is mainly attributed to its sulfur defects, which can provide abundant active sites to activate nitrogen molecules. It reveals that the photoexcited electrons generate ammonia through two protonation pathways and weaken the N≡N bond in the photocatalytic nitrogen fixation path. This work provides new insights into photocatalytic nitrogen fixation and achieves efficient N2 photoreduction by synthesizing photocatalysts from MOF derivatives.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Chenda Wei,Shixin Huang,Wei Liu,Hailong Lin,Zhicheng Wen,Chunjin Hang,Rong An
Template-guided topotactic transformation builds an ordered 2D/1D Bi 2 O 2 S/Bi 2 S 3 . • Bi 2 O 2 S/Bi 2 S 3 exhibited excellent sensitivity and a fast response to NO under high humidity. • The sensing mechanism was systematically studied at atomic and electronic scales. • Exhaled NO monitoring potential was demonstrated under breath-relevant conditions. Exhaled nitric oxide (NO) is a clinically relevant noninvasive breath biomarker associated with asthma diagnosis and management, yet its reliable detection remains hindered by the high humidity of human breath. Here, we develop a humidity-enhanced sensing strategy through template-guided topotactic transformation. The resulting hierarchically ordered 2D/1D Bi 2 O 2 S/Bi 2 S 3 (BOS/BS) heterostructure features an open nanoarchitecture, facilitating rapid gas transport and exposing active sites. The optimized BOS/BS sensor delivers a response of 37 to 1 ppm NO at room temperature under 90% RH, with response/recovery times of 9/33 s and a detection limit of 25 ppb. The response is nearly 12 times that of the single-phase BS sensor and 4 times that of the less ordered BOS/BS sensor Rather than excluding moisture, the BOS/BS heterostructure integrates interfacial charge redistribution with humidity-induced surface hydroxylation to promote NO adsorption and conversion. This work establishes a topotactic route to hierarchically ordered heterostructures for room-temperature NO sensing under high humidity and offers a materials-design strategy for breath-relevant NO sensing under moisture-rich conditions. Download: Download high-res image (165KB) Download: Download full-size image
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Nanoscale
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2017
·Vol. 9
·期 38
·14364-14375
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IF 7.367
Yuhao Li,Yun Sun,Tianye Cao,Qianqian Su,Zili Li,Mingxian Huang,Ruizhuo Ouyang,Haizhou Chang,Shuping Zhang,Yuqing Miao
Overtreatment as a crucial modern medicine issue needs to be urgently addressed. Theranostic agents supply a unique platform and integrate multiple diagnosis and therapies to deal with this issue. In this study, a core–shell MnS@Bi2S3 nanostructure was fabricated via two step reactions for tri-modal imaging guided thermo-radio synergistic therapy. The mass ratio between the core and shell of the constructed MnS@Bi2S3 can be precisely controlled via cation exchange reaction. After surface PEGylation, MnS@Bi2S3-PEG nanoparticles exhibited excellent aqueous medium dispersibility for bioapplications. Based on the r1 and r2 relaxivity obtained from the MnS core and the strong near-infrared absorption and X-ray attenuation abilities of the Bi2S3 shell, the intratumoral injected MnS@Bi2S3-PEG can realize in vivo magnetic resonance, computer tomography, and photoacoustic tumor imaging under a single injection dose. Hyperthermia significantly boosts the efficacy of radiation therapy, showing synergistic tumor treatment efficacy. No obvious toxicity is monitored for the treated mice. Our study not only provides a new way to precisely construct the core–shell nanocomposite, but also presents a unique theranostic platform and unifies the solutions for the challenges related with high injection dose and overtreatment.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Ping Li,Ying Yang,Feng Li,Wenyuan Pei,Dan Li,Hui Yu,Xiangting Dong,Tianqi Wang
With the significant increase in global awareness of environmental protection, green non-toxic gas sensors have become an important tool to promote sustainable development. In this work, a gas sensor based on Bi 2 S 3 green non-toxic semiconductor material was successfully prepared. By introducing polyoxometalate (POMs) electron acceptor into Bi 2 S 3 sensing material, its detection ability for NO 2 gas was significantly improved. At room temperature (25 °C), the Bi 2 S 3 /1 %PW 12 sensor has a response value of 41.88 to 100 ppm NO 2 , which is 4.36 times the response value of the Bi 2 S 3 sensor (9.61), highlighting its excellent detection performance. In addition, we thoroughly evaluated the selectivity , repeatability and other key gas sensing parameters of the sensor, further confirming its high-potential in practical applications. Through analysis of the mechanism underlying the performance enhancement, it is found that the appropriate addition of PW 12 as an electron acceptor can effectively inhibit the electron-hole recombination, thus significantly improving the performance of the sensor. This important discovery opens up a new way and method for the performance optimization of gas sensors, and is expected to inject new vitality into the future development of gas sensor technology.
研究领域:
材料科学
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环境监测
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半导体物理
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纳米科技
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传感器技术
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Jianghua Huang,Baikang Zhu,Debin Song,Bohong Wang,Lihui Chen,Lu Lu,Qingguo Chen,Limei Gai,Chunyang Zhai,Li Chen,Hengcong Tao
The construction of S-scheme heterostructure is a prospective strategy to remove polycyclic aromatic hydrocarbons (PAHs) from simulated seawater. In this study, a novel Bi 2 S 3 /CeVO 4 S-scheme heterojunction photocatalyst was prepared by solvent thermal method. The successful construction of S-scheme heterostructure is beneficial to the separation and migration of photogenerated carriers, thus achieving excellent redox capacity and efficient production of free radicals, which is conducive to promoting the photocatalyst to transform pollutants into H 2 O, CO 2 . In pure water, the optimized Bi 2 S 3 /CeVO 4 heterojunction (Bi/Ce-30) achieved a high degradation efficiency (97.39 %) for naphthalene (NAP). In simulated seawater, the degradation efficiency of NAP still reaches 87.20 % ( k = 0.01653 min −1 ), which is 7.58 folds higher than pure CeVO 4 . Furthermore, the effect (such as solution pH, pollutant concentration, etc.) on the photocatalytic performance of Bi 2 S 3 /CeVO 4 heterojunction was investigated. The possible photocatalytic degradation processes of NAP were qualitatively analyzed using 3D fluorescence spectroscopy and HPLC-MS to reveal the major degradation pathways. In addition, toxicity assessment software was used to demonstrate the gradual decrease in toxicity of the intermediate products. Furthermore, we elucidated the possible photocatalytic mechanism of Bi 2 S 3 /CeVO 4 S-scheme heterojunction for the degradation of NAP. This work provides new insights into the realization of S-scheme heterojunction for removing polycyclic aromatic hydrocarbons from natural seawater.
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CHEMOSPHERE
·
2023
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IF 8.8
Kexue Liu,Na Li,Jia Ding,Na Chen,Suo Wang,Qian Wang,Xiangfeng Yao,Xianxu Li,Jun Wang,Huanshun Yin
Bi 2 O 2 CO 3 /Bi 2 S 3 heterojunction was prepared by one-step hydrothermal method, where Bi(NO 3 ) 3 was employed as Bi source, Na 2 S was used as a sulfur source, and CO(NH 2 ) 2 was adopted as C source. The load of Bi 2 S 3 was adjusted by changing the content of Na 2 S. The prepared Bi 2 O 2 CO 3 /Bi 2 S 3 illustrated strong photocatalytic activity towards dibutyl phthalate (DBP) degradation. The degradation rate was 73.6% under the irradiation of visible light for 3 h, which were 3.5 and 1.87 times for Bi 2 O 2 CO 3 and Bi 2 S 3 , respectively. In addition, the mechanism for the enhanced photoactivity was investigated. After combined with Bi 2 S 3 , the formed heterojunction structure inhibited the recombination of photogenerated electron-hole pair, improved the visible light adsorption, and accelerated the migration rate of the photogenerated electron. As a result, analysis of the radical formation and the energy band structure revealed that Bi 2 O 2 CO 3 /Bi 2 S 3 was consistent with the S-scheme heterojunction model. The S-scheme heterojunction allowed the Bi 2 O 2 CO 3 /Bi 2 S 3 to possess high photocatalytic activity. The prepared photocatalyst presented acceptable cycle application stability. This work not only develops a facile one-step synthesis technique for Bi 2 O 2 CO 3 /Bi 2 S 3 , and also provides a good platform for the degradation of DBP.
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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.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Wenqing Yu,Fanming Meng,Hainan Wei,Han Zhang,Sheng Yao
Designing heterogeneous photocatalysts to enhance the activity of photo-induced ch arge separation for efficient degradation of organic pollutants in aqueous systems remains a significant challenge. A double Z-scheme Ag 3 PO 4 /MOF-In 2 S 3 /Bi 2 S 3 heterojunction containing trace Ag compositing was rationally designed and prepared, and fully characterized. Nitrogen adsorption–desorption experiments and Ultraviolet–Visible diffuse reflection spectroscopy (UV–Vis DRS) showed that the heterostructure expanded the surface area of single component, and had the highest absorption rate and the widest range of light. The presence of Ag in this heterostructure was demonstrated by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS), which explained the strong resistance to photo corrosion and the highest current density exhibited by the composite in photocurrent response testing. The photocatalytic degradation of the antibiotic levofloxacin (LVX) was carried out, in which the degradation proportion of ABIS-Ⅲ sample was as high as 93.6 % within 90 min. Free radical scavenging assay and ESR experiment demonstrated that OH and O 2 – worked together to promote the degradation of LVX. Combined theoretical calculations with experimental results to reasonably construct a double Z-scheme to elaborate the carrier migration paths under light illumination. This novel double Z-scheme model heterojunction is expected to provide new ideas for the study of the photocatalytic mechanism of multiplicity complexes and the removal of antibiotic contaminants.
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