FUEL
·
2024
·
IF 6.7
Haitao Zhao,Heyuan Liu,Hongjie Zhu,Jianmin Dou
Building intimate interface of heterojunction is crucial to boosting photocatalytic activity via accelerating charge carrier separation. In this paper, for the first time, 0D/3D SnIn 4 S 8 /diethylenetriamine-CdS (SIS/D-CdS) type-II nano-heterojunction is constructed by in-situ hydrothermal method, which focuses on improving the solar H 2 evolution. Strikingly, SEM, HR-TEM images strongly demonstrate 0D SIS loading on 3D dandelion-like D-CdS surfaces. Among all the nano-heterojunctions, the final optimized 7-SIS/D-CdS displays 4.6 times and 2.8 times higher than that of pristine D-CdS and p-7 % SIS/D-CdS in photocatalytic hydrogen evolution rate, respectively. Furthermore, the AQE reaches 21.57 % under 420 nm monochromatic wavelength light irradiation. Meanwhile, composite material exhibits excellent stability during multiple cycles process. In particular, the TC degradation efficiency of 7-SIS/D-CdS reaches 89.4 % within 40 min. This improved photocatalytic activity and photostability are ascribed to fact that the formation of high-quality interface with intimate contact over the SIS/D-CdS nano-heterojunction and SIS as hole capture agent. XPS analysis, work functions, and charge density distributions results further elucidate the charge transfer path between D-CdS and SIS over SIS/D-CdS nanocomposite. Therefore, a possible photocatalytic charge carrier migration mechanism is proposed. This work not only enriches the application of SnIn 4 S 8 -modified composites in photocatalytic H 2 system, but also provides a very promising strategy for designing high-efficient photocatalysts.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Tingting Ji,Yuye Yan,Jianxiang Wang,Yingxia Zong,Ruiyang Zhao,Dong Yao,Jishu Han,Lei Wang
Climate change and natural disasters have stimulated the exploration of renewable energy, photocatalytic hydrogen production utilizing solar energy is considered an effective way. In this study, hollow FeNi 2 -MIL-88 nanorods were synthesized by the hydrothermal method, and then FeNi 2 P was obtained by gas phase phosphorization. Finally, SnIn 4 S 8 was utilized to coat the surface of FeNi 2 P through an in-situ growth method to obtain rod-like SnIn 4 S 8 /FeNi 2 P. The results showed that the hydrogen production of SnIn 4 S 8 /FeNi 2 P reached 18083.93 μmol/g within 3 h. And SnIn 4 S 8 /FeNi 2 P showed good stability. The photocurrent response spectra and electrochemical impedance spectra confirmed that SnIn 4 S 8 /FeNi 2 P had good carrier conductivity and effectively inhibited the reorganization of photogenerated carriers. The modification of SnIn 4 S 8 enabled the construction of a Z-scheme heterojunction between SnIn 4 S 8 and FeNi 2 P. It provided more active sites and promoted the separation of photogenerated carriers, ultimately improving the hydrogen production performance of the SnIn 4 S 8 /FeNi 2 P photocatalyst. It would offer essential insights into the design and development of efficient MOFs-derived photocatalysts.
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
NANOTECHNOLOGY
·
2019
·Vol. 31
·期 10
·105202
·
IF 3.399
Miao Hu,Aihua Yan,Ji Huang,Fei Huang,Fan Li,Qiaopeng Cui,Qi Li,Xinyang Wang
In the last ten years, bismuth oxybromide (BiOBr) has attracted wide attention due to its superior optoelectronic property. However, its practical application still suffers from slow carrier transport and high carrier recombination. Here we report a kind of novel tannum indium sulfide (SnIn4S8)/BiOBr hybrid prepared by a two-step hydrothermal method. The results showed that small amount of SnIn4S8 had no influence on the crystal phase of BiOBr, but the morphology could be regulated from nanosheet to nanoflower. Specially, SnIn4S8 exerted a slight effect on the light absorption and band gap of BiOBr. Importantly, SnIn4S8/BiOBr hybrids exhibited remarkable enhancement of the photocatalytic activity towards the degradation of rhodamin B (RhB) dye molecules. SnIn4S8/BiOBr-0.20 with 99.8% degradation efficiency had the highest photocatalytic activity within 40 min, while it was only 71.1% for pure BiOBr. The enhanced photocatalytic activity was mainly attributed to efficient interfacial transfer and low carrier recombination. This work will help us understand the photocatalytic mechanism of bismuth oxyhalide hybrids.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Meng Lan,Hanbing Jia,Xiaoli Dong,Nan Zheng,Xue Li,Yu Wang,Helezi Zhou
The development of highly competent and economical photocatalysts for competent erasure of heavy metal pollutants in water is of momentous import but still a significant challenge. Herein, 3D/0D SnIn 4 S 8 /Cd 0.5 Zn 0.5 S heterostructure photocatalyst was resoundingly fabricated through integrating Cd 0.5 Zn 0.5 S nanoparticles on the surface of SnIn 4 S 8 microsphere via a simple solvothermal method and applied to high efficiency photoreduction Cr(VI). The fabricated SnIn 4 S 8 /Cd 0.5 Zn 0.5 S with optimized composition ratio achieves the exceptional reduction Cr(VI) property and the photoreduction efficiency of 20 % SnIn 4 S 8 /Cd 0.5 Zn 0.5 S can reach 91.1 % within 30 min visible light illumination. The prominent photocatalytic efficiency comes from the intimate contact of heterostructure interface, which effectively expedites the separation and migration of carrier and inhibits the photocorrosion of photocatalyst. This work provides a promising photocatalyst for water environment remediation, and promotes the exploration of heterostructure photocatalyst for wastewater purification.
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
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Rengui Weng,Feng Tian,Zhendong Yu,Jiachen Ma,Yuancai Lv,Beidou Xi
Currently, Tetrabromobisphenol A (TBBPA) has been regarded as an emerging organic pollutant and efficient TBBPA elimination technology has been attracting increasing attention. In this work, a novel photocatalyst, MoS 2 /SnIn 4 S 8 , was synthesized through hydrothermal method by introducing few-layer MoS 2 nanosheets and then employed to establish an integrated photocatalytic reduction/oxidation system for the remediation of TBBPA under visible light. The characterization results demonstrated that the few-layer MoS 2 nanosheets were well combined with SnIn 4 S 8 and significantly lowered the recombination rate of the photo-induced electron and holes, leading to outstanding photocatalytic performance of MoS 2 /SnIn 4 S 8 composite. Besides, the MoS 2 /SnIn 4 S 8 composite also exhibited excellent reusability (over 10 runs) and stability. The TBBPA degradation experiments showed that the integrated photocatalytic reduction/oxidation system was able to completely degrade TBBPA and mineralize its byproducts (60.2 ± 2.9%). In the photocatalytic reduction, due to the cleavage of C–Br bonds by photo-induced electrons, TBBPA underwent stepwise debromination and finally transferred into BPA in 6 h. In the following photocatalytic oxidation, under the attack of reactive oxygen species ( 1 O 2 , h + , OH and O 2 − ), BPA was first decomposed into aromatic products (such as phenol, benzoic acid , p -hydroxybenzyl alcohol and so on) via C–C bond cracking and hydroxylation, and then further oxidized into organic acids like maleic acid and muconic acid through ring-opening, and finally mineralized into CO 2 and H 2 O. What was noteworthy was that the final effluent from the photocatalytic reduction/oxidation system showed no toxicity to the luminescent bacteria.
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
Catalysts
·
2019
·Vol. 9
·期 2
·187
·
IF 3.444
Pingfan Xu,Siyi Huang,Minghua Liu,Yuancai Lv,Zhonghui Wang,Jinlin Long,Wei Zhang,Haojun Fan
Semiconductor photocatalysis has received much attention as a promising technique to solve energy crisis and environmental pollution. This work demonstrated the rational design of “sandwich” WO3/rGO/SnIn4S8(WGS) Z-scheme photocatalysts for efficient purification of wastewater emitted from tannery and dyeing industries. Such materials were prepared by a combined protocol of the in situ precipitation method with hydrothermal synthesis, and structurally characterized by XRD, SEM, HRTEM, UV-vis DRS, and PL spectroscopy. Results showed that the Z-schemed nanohybrids significantly enhanced the photocatalytic activity compared to the single component photocatalysts. An optimized case of the WGS-2.5% photocatalysts exhibited the highest Cr(VI) reduction rate, which was ca. 1.8 and 12 times more than those of pure SnIn4S8(SIS) and WO3, respectively. Moreover, the molecular mechanism of the enhanced photocatalysis was clearly revealed by the radical-trapping control experiments and electron paramagnetic resonance (ESR) spectroscopy. The amount of superoxide and hydroxyl radicals as the major reactive oxygen species performing the redox catalysis was enhanced significantly on the Z-scheme WGS photocatalysts, where the spatial separation of photoinduced electron–hole pairs was therefore accelerated for the reduction of Cr(VI) and degradation of Rhodamine B (RhB). This study provides a novel strategy for the synthesis of all-solid-state Z-scheme photocatalysts for environmental remediation.Keywords:WO3/rGO/SnIn4S8;Z-scheme photocatalyst;active oxygen species;photocatalytic Cr (VI) reduction;rGO
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Yuancai Lv,Zhendong Yu,Siyi Huang,Fucai Deng,Kaiyun Zheng,Guifang Yang,Yifan Liu,Chunxiang Lin,Xiaoxia Ye,Minghua Liu
Considering the high environmental risk, the remediation of veterinary drug pollutants aroused numerous concerning. In this paper, a novel photocatlyst, SnO 2 /SnIn 4 S 8 , was fabricated by in situ precipitation and hydrothermal method and then employed to simulate photocatalytic degradation of olaquindox under visible light. The SEM, TEM, XRD, XPS and electrochemical results clearly showed that the n-type heterojunction between SnO 2 and SnIn 4 S 8 was successfully constructed, which greatly reduce the recombination of the photogenic electron and holes, leading to the improvement of photocalytic performance and stability (recycled over 10 times). Besides, the SnO 2 /SnIn 4 S 8 composite also exhibited good ability to mineralize the olaquindox. Under the optimal condition (pH of 3, 1 g L −1 of 30 wt% SnO 2 /SnIn 4 S 8 and 10 mg L −1 of initial olaquindox concentration), the olaquindox could be fully and rapidly degraded in 25 min, and completely mineralized in 2 h (99.3 ± 1.7%). LC-QTOF-MS analysis evidently displayed 10 intermediates during the olaquindox degradation. In addition, with the attack of the reactive oxygen species (h + , •OH and •O 2 − ), olaquindox could be effectively decomposed via deoxygenation , hydroxylation and carboxylation reactions. Importantly, compared to photodegradation , the photocatalytic process was an ideal way to eliminate the olaquindox form water because it could avoid the accumulation of toxic byproducts.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wei Chen,Shu-Chang Wu,Zhi-Jun Xia,Guo-Bo Huang,Jun Hu
In this research, we rationally designed and synthesized quantum dots self-decorated SnIn 4 S 8 /g-C 3 N 4 (QDs-SISCN) nanocomposites by in situ anchoring quantum dot (QDs) self-decorated SnIn 4 S 8 (SIS) nanosheets onto the surface of mesoporous graphite carbon nitride (CN) nanosheets in a mixed solvothermal environment. The photoreduction of 4-nitroaniline (4-NA) was used to assess their photocatalytic activity. In this framework, the construction of CN nanosheets-supported QDs-decorated SIS homojunctions can integrate the advantages of both homojunctions and heterojunctions . Benefiting from those favourable properties, the QDs-SISCN nanocomposites exhibit superior photocatalytic activity towards 4-NA reduction under visible-light irradiation (λ > 400) as a result of the optimizied amount of CN nanosheets added. The recycling experiments also reveal high stability of the QDs-SISCN nanocomposites during photocatalytic reactions for 4-NA reduction. Moreover, the investigation of the photocatalytic mechanism from systematic characterizations, including measurements of the photocurrent response, electrochemical impedance spectroscopy (EIS) and photoluminescence (PL) indicate that the improved separation efficiency of charge carriers is a critical parameter for the enhanced photocatalytic activity for 4-NA reduction. We expect this research to provide a promising path to the design and synthesis of highly efficient hybrid photocatalysts for functional-group transformations.
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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2021
·Vol. 28
·期 22
·28024-28037
·
IF 4.223
Lv Yuancai,Yu Jianying,Huang Siyi,Zheng Kaiyun,Yang Guifang,Liu Yifan,Lin Chunxiang,Ye Xiaoxia,Liu Minghua
Considering the high environmental risk, the remediation of antibiotic pollutants attracted numerous attentions. In this work, a novel photocatalyst, Ce 0.9 Zr 0.1 O 2 /SnIn 4 S 8 , was fabricated by in situ precipitation and hydrothermal method and then applied to the degradation of norfloxacin under the irritation of visible light. The SEM, TEM, XRD, XPS, and electrochemical results clearly showed that the n-type heterojunction between Ce 0.9 Zr 0.1 O 2 and SnIn 4 S 8 was successfully constructed, which greatly reduces the recombination of the photogenic electron and holes, leading to the improvement of photocatalytic performance and stability (recycled over eight times). Besides, the Ce 0.9 Zr 0.1 O 2 /SnIn 4 S 8 composite also exhibited good ability to mineralize norfloxacin. Under the optimal condition (pH 3, 1 g L −1 of 10% Ce 0.9 Zr 0.1 O 2 /SnIn 4 S 8 , and 8 mg L −1 of initial norfloxacin concentration), norfloxacin could be fully and rapidly degraded in 60 min, and completely mineralized in 4 h (99.3 ± 1.7%). LC-QTOF-MS results evidently displayed eight intermediates during norfloxacin degradation. In addition, with the attack of the reactive oxygen species (h + , •OH, and •O 2 − ), norfloxacin could be effectively decomposed via deoxygenation, hydroxylation, and carboxylation reactions. Notably, compared to photodegradation, the photocatalytic process could completely eliminate the norfloxacin from water because it could avoid the accumulation of toxic byproducts.
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
Polymers
·
2024
·Vol. 16
·期 3
·369
·
IF 4.7
Zhonghui Wang,Qiang Gao,Haihang Luo,Jianming Zhao,Haojun Fan,Yi Chen,Jun Xiang
In recent years, polyurethane has drawn great attention because of its many advantages in physical and chemical performance. In this work, firstly, polyurethane was impregnated in a non-woven fabric (NWF). Then, polyurethane-impregnated NWF was coagulated utilizing a wet phase inversion. Finally, after alkali treatment, microfiber non-woven fabrics with a porous polyurethane matrix (PNWF) were fabricated and used as substrates. SnIn4S8(SIS) prepared by a microwave-assisted method was used as a photocatalyst and a novel SIS/PNWF substrate with multiple uses and highly efficient catalytic degradation ability under visible light was successfully fabricated. The surface morphology, chemical and crystal structures, optical performance, and wettability of SIS/PNWF substrates were observed. Subsequently, the photocatalytic performance of SIS/PNWF substrates was investigated by the decomposition of rhodamine B (RhB) under visible light irradiation. Compared with SIS/PNWF-2% (2%, the weight ratio of SIS and PNWF, same below), SIS/PNWF-5% as well as SIS/PNWF-15%, SIS/PNWF-10% substrates exhibited superior photocatalytic efficiency of 97% in 2 h. This may be due to the superior photocatalytic performance of SIS and the inherent hierarchical porous structure of PNWF substrates. Additionally, the hydrophobicity of SIS/PNWF substrates can enable them to float on the solution and further be applied on an open-water surface. Furthermore, tensile strength and recycle experiments demonstrated that SIS/PNWF substrates possessed superior mechanical strength and excellent recycle stability. This work provides a facile and efficient pathway to prepare SIS/PNWF substrates for the degradation of organic pollutants with enhanced catalytic efficiency.
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
PubMed
高影响因子
Nanotechnology Reviews
·
2024
·Vol. 13
·期 1
·
IF 6.1
Zhonghui Wang,Qiang Gao,Haihang Luo,Haojun Fan,Yi Chen,Jun Xiang
A type of reduced graphene oxide (rGO)/SnIn 4 S 8 (SIS) nanocomposites was successfully fabricated by a facile and efficient microwave-assisted method. Their morphology, structure, composition, and optical performance were investigated by different analytical techniques, respectively. The results indicated that rGO had an important effect on the structure of photocatalysts. As the content of rGO increases, the unchin-like microsphere structure of rGO/SIS evolved gradually into aggregated nanosheet structure. The photocatalytic degradation experiments were carried out under visible light irradiation. The results demonstrated rGO/SIS-2 nanocomposites exhibited higher photocatalytic activity toward the degradation of RhodamineB than that of SIS, rGO/SIS-1 as well as rGO/SIS-3. Meanwhile, the mineralization efficiency of Rhodamine B (RhB) can reach up to 73.8% within 30 min. Interestingly, rGO/SIS-2 nanocomposites exhibited excellent recycle stability with 96% removal efficiency of RhB after three cycles. The enhanced photocatalytic activity of rGO/SIS-2 nanocomposites should be attributed to the strong interaction of rGO and SIS, the decrease of band gap energy, the enhanced visible light absorption, and excellent electrons’ mobility of rGO, thereby promoting charge separation. Finally, the mechanism of rGO/SIS nanocomposites for the degradation of RhB has been also proposed. This work provides a facile and efficient pathway to prepare SIS-based nanocomposites with enhanced catalytic efficiency by combining the advantages of microwave-assisted heating and incorporating carbon-based nanomaterials for the degradation of organic pollutants in visible light irradiation.
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
RSC Advances
·
2018
·Vol. 8
·期 11
·5749-5759
·
IF 2.936
Pingfan Xu,Siyi Huang,Yuancai Lv,Yi Chen,Minghua Liu,Haojun Fan
To solve the problem of contamination of hexavalent chromium (Cr(VI)), visible-light-driven graphene-based ternary metal chalcogenide nanosheets (rGO/SnIn4S8) were synthesized via a one-pot surfactant-assisted hydrothermal method for the photoreduction of Cr(VI). Characterizations demonstrated that SnIn4S8 nanosheets were uniformly distributed on the surface of rGO and the as-synthesized nanosheets exhibited excellent photocatalytic activity under visible light. In addition, the effects of pH, concentration of critic acid, holes and electron scavengers on the reduction of Cr(VI) were systematically investigated. It was found that 50 mg L−1 of Cr(VI) could be completely removed within 30 min at pH 2 when citric acid served as a hole scavenger. Kinetic studies showed that the photocatalytic reduction of Cr(VI) processes obeyed the pseudo first order model. Further study indicated that the Cr(III) species was immediately adsorbed onto the surface of the rGO/SnIn4S8 nanosheets after photocatalytic reduction of Cr(VI). Additionally, recycling results suggested that rGO/SnIn4S8 nanosheets possessed high recycle ability and stability after repeated use (5 times). This effective and promising work might provide a new strategy for the photoreduction of Cr(VI) and complete removal of chromium from effluent through the novel photocatalyst rGO/SnIn4S8.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）