JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Feifei You,Yunan Zhou,Danyang Li,Hao Zhang,Dawei Gao,Xiaohong Ma,Rui Hao,Juzhe Liu
Photoreduction of CO 2 to value-added chemicals and fuels is an attractive solution to alleviate environmental problems and energy crisis at the same time. However, engineering efficient photocatalysts with high activity and product selectivity is still challenging. Herein, we achieved three-dimensional (3D) spatial configuration design at micro-scale and heterogeneous interface construction at nano-scale on a SnS 2 /SnO 2 composite, which featured hierarchical flower-like morphology consisted of nanosheets and type-II semiconductor structure . It behaved excellent selectivity and impressive photocatalytic CO 2 -to-CO performance with a yielding rate of 60.85 μmol g -1 h −1 , roughly 3 times higher than that of SnS 2 and was in the front rank of this kind catalysts under 300 W Xe lamp illumination without using any sensitizers or noble metals . The enhanced catalytic capability could be attributed to the elaborately built structure with suitable energetic position that afforded effective separation and migration of photo-generated electron/hole pairs as well as enhanced light caption and absorption. Meanwhile, main reactive intermediates (e.g., CO 2 – and *COOH) were captured by in-situ Fourier transform infrared spectroscopy (FTIR), suggesting a fluent catalytic pathway on the SnS 2 /SnO 2 platform. This work provides a new scheme to build advanced catalysts based on multiscale design and rational phase assembling.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
Nanoscale Research Letters
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2011
·Vol. 6
·期 1
·1-8
·
IF 2.56
Tan Furui,Qu Shengchun,Wu Ju,Liu Kong,Zhou Shuyun,Wang Zhanguo
Dispersive SnS 2 colloidal quantum dots have been synthesized via hot-injection method. Hybrid photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3",7"dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) as electron donor and crystalline SnS 2 quantum dots as electron acceptor have been studied. Photoluminescence measurement has been performed to study the surfactant effect on the excitons splitting process. The photocurrent of solar cells with the hybrid depends greatly on the ligands exchange as well as the device heat treatment. AFM characterization has demonstrated morphology changes happening upon surfactant replacement and annealing, which can explain the performance variation of hybrid solar cells.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
·
IF 8
Peng Li,Shuguo Yu
In this study, a nano-flower MoSe 2 -SnS 2 humidity sensor with S defects with fast response and low humidity hysteresis was prepared for respiratory and skin humidity detection. The increase in S vacancy defects provides more adsorption sites for water molecules and also facilitates the decomposition of water molecules and improves proton conduction. The construction of MoSe 2 -SnS 2 composite prompted an increase in the specific surface area of material exposing more active sites. This promoted the adsorption of water molecules on the device surface and accelerated the electron transfer between water molecules and the sensitive layer. The nanoflower structure of MoSe 2 -SnS 2 can provide channels for water molecules to be transported into the interior of material, which can effectively shorten the response time of sensor. MoSe 2 -SnS 2 sensor exhibited faster response/recovery time (13/15 s), lower humidity hysteresis (1%) and higher stability in the range of 11%-95% RH. In addition, MoSe 2 -SnS 2 humidity sensor can successfully detect respiration and skin moisture, showing the application potential of the sensor in the detection of respiration and skin humidity. This study provides a new idea for the preparation of high-performance 2D nano humidity sensors and promotes the expansion of new application areas for the sensors.
研究领域:
材料科学
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传感技术
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生物医学工程
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2017
·Vol. 43
·期 9
·5217-5228
·
IF 1.369
Qin Na,Jing Kaiqiang,Chen Rui,Xiong Jinhua,Liang Ruowen,Li Zhaohui,Wu Ling
Abstract SnS 2 /SnO 2 nanocomposites have been successfully prepared via a hydrothermal method using electrospun SnO 2 nanotubes as both substrates and reactants. The ratios of the nanocomposites are controlled by varying the concentration of thioacetamide during the solvothermal synthesis processes. The as-prepared SnS 2 /SnO 2 nanocomposites exhibit considerable improvement on the photocatalytic activities for the reduction of aqueous Cr(VI) under visible light irradiation. Their photoactivities are also much higher than that of SnS 2 nanoplates and a physical mixture of SnO 2 and SnS 2 . In particular, the SnS 2 /SnO 2 -B sample exhibits the highest photocatalytic activity. After visible light irradiation for 60 min, the reduction rate has reached about 100%. The photoelectrochemical analyses further show that the high photocatalytic activity of the SnS 2 /SnO 2 -B sample can be ascribed to the unique structural features and the intimate interfacial contact between SnS 2 and SnO 2 , which is more effective separation of the photo-generated carriers. Graphical Abstract
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
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2021
·
IF 1.134
Qiu-Mei FENG,Li QIN,Peng ZHANG,Dan LI,Ming-Kai LIU,Po WANG
Building a precise, sensitive, and selective sensing platform is highly significant for microRNA (miRNA) detection. Herein, an innovative ratiometric electrochemical biosensor sensitized with carbon nanoparticles-functionalized SnS 2 nanoflowers ( [email protected] 2 NFs) and enzyme-assisted target recycling was explored for analysis of miRNA-21. In this strategy, the application of hierarchical [email protected] 2 NFs structure as electrode material not only enhanced the surface loading capability for subsequent reactions but also improved the interfacial electron transfer. After introducing enzyme-assisted target recycling, single-target miRNA-21 could initiate the cleavage of multiple capture DNA strands by duplex-specific nuclease (DSN), leading to numerous rest single-strand DNAs on the electrode. Two probes, methylene blue-labeled probe 1 (probe 1-MB) and ferrocene-labeled probe 2 (probe 2-Fc), could selectively and competitively hybridize with the capture DNA and the rest single-strand DNA, depending on the completeness of DNA hybridization. By measuring the peak current intensity ratio of Fc and MB, miRNA-21 was quantified in a wide concentration range from 1 fmol/L to 10 pmol/L, with a detection limit of 300 amol/L. Moreover, this sensing system showed good analytical performance in the presence of interfering sequences and complex matrices, illuminating excellent selectivity and practical application potential of the hierarchical [email protected] 2 NF sensing interface.
研究领域:
生物化学
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纳米医学
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分子诊断
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2021
·
IF 1.556
Ze-Xiao Lei,Feng-Yi Yang,Cong Yuan,Lang Tai,Chang-Yu Yao,Dong Fang
The development of heterojunction composites with core–shell structure could effectively facilitate the separation of carriers. In this work, a novel In 2 O 3 -SnS 2 (IOS) core–shell heterojunction photocatalyst was successfully synthesized for the efficient photocatalytic reduction of hexavalent chromium (Cr(VI)), namely, the In 2 O 3 nanorods were obtained through successive hydrothermal and carbonization process using urea and glucose as template. Then, SnS 2 nanosheets were successfully in situ coated onto In 2 O 3 nanorods. The spectroscopic characterization and photo-electrochemistry test indicated that the IOS core–shell heterojunction could effectively accelerate the separation and transport of carriers and suppress the recombination of carriers. The photocatalytic performance of IOS was evaluated by photocatalytic reduction Cr(VI). The results showed that IOS-4 samples almost completely removed Cr(VI) (20 mg/L), within 90 min under visible light, which was superior to pure In 2 O 3 and SnS 2 . Furthermore, IOS samples also possess excellent stability, the removal efficiency was still maintained at 90% after five cycles. This work provided a reliable method for designing core–shell heterojunctions for the photocatalytic removal of Cr(VI) under visible light.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
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2012
·
IF 5.625
Xi Li,Jian Zhu,Hexing Li
The photocatalytic performances of the SnS 2 and the CdS under the irradiation of visible light were investigated by using different organic dyes as reactants. The photodegradation of organic dyes containing N N double bond on the SnS 2 followed a reduction mechanism with photoelectrons via the Sn IV /Sn II transition while the photodegradation of organic dyes containing N N double bond on the CdS and the photodegradation of organic dyes without N N double bond on either the SnS 2 or the CdS followed an oxidation mechanism with O 2 − and OH radicals. The SnS 2 exhibited much higher activity than the CdS during the photocatalytic degradation of organic dyes containing N N double bond, since the reduction of reactant molecules on the SnS 2 surface was much faster than the migration of either the O 2 − or the OH radicals. However, the SnS 2 displayed even lower activity than the CdS in the photocatalytic degradation of other organic dyes without N N double bond, since all these reactions followed the oxidation mechanism and the SnS 2 displayed a lower efficiency than the CdS in producing O 2 − or OH radicals due to the presence of the Sn IV /Sn II transition.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Huiqiao Liu,Yanan He,Hang Zhang,Kangzhe Cao,Shaodan Wang,Yong Jiang,Qiang-Shan Jing,Lifang Jiao
Potassium-ion batteries (KIBs) are considered to be promising energy-storage-systems in the post-Li-ion batteries. Conversion and alloy reaction anode materials draw much attention owing to high theoretical capacities. However, their inherent volume expansions always block the K-ion diffusion or interrupt electron transfer to a degree, resulting in degraded performances at high rates. It is supposed that the rate capability of the anode would be improved when the avenues for ion/electron are kept expedite simultaneously. Herein, SnS 2 and carbon hybrid submicro-fibers with optimized channels were prepared as integrated KIBs electrodes to clarify the effect of the bi-continuous avenues on the rate capability. In this configuration, SnS 2 nanosheets are confined by carbon and further crosslinked into 3D network. The 3D carbon submicro-fibers are adopted as a network for electron transfer , while the channels play the role of ion diffusion avenues. Owing to the stable and expedite bi-continuous electron/ion avenues, the rate capability of the SnS 2 @C–1V1 SMF electrode (137.5 mAh g −1 at 2.0 A g −1 ) is improved when compared to the counterparts (3.6 mAh g −1 and 94.5 mAh g −1 at the same condition). This work will offer an important reference for the optimization design and construction of KIBs anode materials with high rate capability.
研究领域:
材料科学
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电化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 2
·1-11
·
IF 2.8
Wu Xiaoping,Chen Long,Hu Haihua,Song Changsheng,Jiang Qi,Wang Peng,Xu Lingbo,Lin Ping,Cui Can
Cu 2 O@SnS 2 heterojunction photocatalysts with one-dimensional hierarchical nanostructure were prepared by the solvothermal method. The Cu 2 O@SnS 2 hierarchical nanostructure is composed of Cu 2 O nanowire core as well as in situ grown ultra-thin SnS 2 nanosheets on Cu 2 O nanowires. The hierarchical Cu 2 O@SnS 2 composite shows higher catalytic activity, and the degradation ratio of MB reaches nearly 100% at 80 min. The first-order reaction kinetic constant of Cu 2 O@SnS 2 is 0.045 min − 1 , which is much higher than that of Cu 2 O (0.003 min − 1 ) and SnS 2 (0.014 min − 1 ). The improvement in photocatalytic performance is mainly due to the formation of typical heterojunction between Cu 2 O and SnS 2 . Photo-induced electrons in the CB of Cu 2 O react with oxygen to form superoxide radicals (·O 2− ) with strong oxidation ability. At the same time, the photo-induced holes in the VB of SnS 2 also have strong oxidation ability, and the two can synergistically induce the degradation of pollutants. In addition, SnS 2 nanosheets not only provide a large number of reaction sites for photocatalytic degradation, but also facilitate the migration of photo-induced carrier to the surface. The unique hierarchical Cu 2 O@SnS 2 microstructure can also promote multiple light scattering within the material to enhance light absorption. Thus, the one-dimensional hierarchical Cu 2 O@SnS 2 is a promising new visible light catalyst, which has potential application prospect in environmental protection and wastewater 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
Catalysts
·
2019
·Vol. 9
·期 11
·927
·
IF 3.444
Aiguo Han,Mei Li,Shengbo Zhang,Xinli Zhu,Jinyu Han,Qingfeng Ge,Hua Wang
In recent years, defective TiO2-based composite nanomaterials have received much attention in the field of photocatalysis. In this work, TiB2was used as a precursor to successfully prepare Ti3+defective TiO2(TiO2-B) with a truncated bipyramidal structure by a one-step method. Then, the SnS2nanosheets were assembled onto the as-prepared TiO2-B through simple hydrothermal reaction. TiO2-B exhibits strong visible light absorption properties, but the recombination rate of the photo-generated electron-hole pair was high and does not exhibit ideal photocatalytic performance. Upon introducing SnS2, the heterojunction catalyst SnS2-Ti3+defective TiO2(SnS2/TiO2-B) not only possesses the strong light absorption from UV to visible light region, the lowest photo-generated charge recombination rate but also achieves a more negative conduction band potential than the reduction potential of CO2to CO, and thereby, exhibits the significantly enhanced selectivity and yield of CO in photocatalytic CO2reduction. Notably, SnS2/TiO2-B produces CO at a rate of 58 µmol·h−1·g−1with CO selectivity of 96.3% under visible light irradiation, which is 2 and 19 times greater than those of alone TiO2-B and SnS2, respectively. Finally, a plausible photocatalytic mechanism on SnS2/TiO2-B was proposed that the electron transfer between TiO2and SnS2follows the Z-scheme mode. Our results present an effective way to gain highly efficient TiO2based photocatalysts for CO2reduction by combining different modification methods of TiO2and make full use of the synergistic effects.Keywords:photocatalytic CO2reduction;TiO2nanoplates;SnS2nanosheets;Ti3+defective TiO2
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
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Yulin Zheng,Xiaoting Cui,Huanshun Yin,Haowei Zhang,Lulu Cao,Lanlan Gao,Yunlei Zhou,Peng Ju,Shiyun Ai
As an important epigenetic modification , 5-carboxycytosine (5caC) played an important role in gene regulation, cell differentiation and growth. 5caC existed in many cells and tissues, but it was highly similar to the structure of other cytosine derivatives and had less content in the genome. Therefore, it was urgent to develop a sensitive and highly selective trace biosensor to detect 5caC. A novel photoelectrochemical biosensor was fabricated for 5-carboxy-2′-deoxycytidine-5′-triphosphate (5cadCTP) detection, where SnS 2 @Ti 3 C 2 nanocomposite was employed as photoactive material, polyethyleneimine was used as 5cadCTP recognition and capture reagent, and Ru(NH 3 ) 6 3+ was used as photosensitizer for signal amplification. Due the good conductivity of Ti 3 C 2 MXene and the matched energy band between Ti 3 C 2 MXene and SnS 2 , SnS 2 @Ti 3 C 2 nanocomposite presented strong photoactivity, which was beneficial to the high detection sensitivity. For specific recognition of 5cadCTP, the covalent interaction of –NH 2 in 5cadCTP with –COOH on the substrate electrode was used, which was beneficial to the high detection selectivity . A broad linear relationship between photocurrent and 5cadCTP concentration was observed ranging from 1 pM to 0.2 μM. The low detection limit of 260 fM was achieved. The developed method has high detection specificity and can even distinguish 5caC with its derivatives. In addition, the applicability was evaluated by detecting the content change of 5caC in the genomic DNA of rice seedlings after cultured with environmental pollutants . This work provides a novel platform for 5cadCTP detection, and it can also be applied to detect other cytosine derivatives with suitable recognition strategies.
研究领域:
生物化学
·
分子生物学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Solar RRL
·
2022
·Vol. 6
·期 10
·2200536
·
IF 9.173
Rui Zhang,Linjia Li,YinYin Li,Dejun Wang,Yanhong Lin,Tengfeng Xie
CsPbBr 3 perovskite exhibits potential application in photocatalytic CO 2 reduction into valuable chemical fuels; however, enhancing carrier separation capability of the CsPbBr 3 and fully understanding the CO 2 reduction reaction process are still imperative. Herein, a new series of x SnS 2 /CsPbBr 3 nanocrystals (NCs)- y heterostructures are developed, which exhibit better catalytic activity in comparison with pure CsPbBr 3 NCs. Interface and surface carrier dynamic investigation reveals that this heterojunction structure can effectively improve carrier separation efficiency. Based on the interfacial electric field direction of CsPbBr 3 to SnS 2 , it is suggested that SnS 2 /CsPbBr 3 NC heterostructure satisfies Z-scheme transfer dynamics. Meanwhile, by the aid of in situ surface photovoltage, it is experimentally confirmed there is dynamic carrier interaction between CO 2 molecules and the SnS 2 /CsPbBr 3 NCs photocatalyst under irradiation, and a photocatalytic CO 2 reduction mechanism is thus proposed. This work expands the awareness of the interaction between CO 2 and the photocatalyst, which can be strongly influenced by carrier separation efficiency at the photocatalyst heterojunction.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）