Small
·
2024
·
IF 13
Shikai Wang,Dong Zhang,Xipeng Pu,Lizhi Zhang,Dafeng Zhang,Jizhou Jiang
Herein, guided by the results of density functional theory prediction, the study rationally designs a hollow core–shell FeNi 2 S 4 @ZnIn 2 S 4 (FNS@ZIS) Step-scheme (S-scheme) heterojunction for photocatalytic H 2 evolution with photothermal-assisted. The hollow FNS spheres offered substrate for coating the ZIS nanosheets, which can inhibit ZIS nanosheets from agglomerating into pellet, enrich the active site, increase specific surfaces, and raise the light absorption. Notably, due to its excellent photothermal properties, FNS core generated heat unceasingly inside under visible-light irradiation and effectively prevent the heat loss of the reaction system, which increased the local temperature of photocatalysts and thus accelerated the charge migration. In addition, the S-scheme heterojunction construction via in situ growth has a tight interface, which can facilitate the separation and transfer of carriers and achieve high redox potential. Owning to the distinctive construction, the hollow core–shell FNS@ZIS S-scheme heterojunction show extraordinary stability and photocatalytic H 2 evolution rate with 7.7 mmol h −1 g −1 , which is ≈15.2-fold than pristine ZIS. Based on the double evidence of theoretical predictions and experimental confirmations, the photothermal effect and electron transfer mechanism of this innovative material are investigated in depth by the following infrared thermography technology and deep DFT calculations.
研究领域:
材料科学
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能源化学
·
理论计算
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Qing Wang,Changcheng Lin,Xinyi He,Hui Zhang,DongMeng Chen,Shaowei Jin,Xueqin Zuo
This study presents a straightforward yet effective one-step hydrothermal method for the homogeneous deposition of ZnIn 2 S 4 (ZIS) onto carbon nanotubes (CNT), resulting in the formation of a unique plum-blossom ZIS@CNT heterostructure composite. The heterostructure formed between ZIS and CNT not only constructs an efficient electron transfer channel, but also provides an appropriate driving force for the transfer of electrons to active sites through the electron-withdrawing effect of carboxyl groups. When the ZIS@CNT composite was utilized as the counter electrode (CE) in a dye-sensitized solar cell (DSSC), the resulting DSSC exhibited an extremely high photoelectric conversion efficiency (PCE) of 9.35 %, which is 27.73 % higher than that of based on the traditional Pt CE (7.32 %). This study provides a new idea for the application of carbon nanomaterials and ZIS in DSSCs, and reveals the reasons for the excellent PCE of ZIS@CNT from the perspective of interface charge distribution.
研究领域:
材料科学
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纳米技术
·
太阳能电池
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Guoqiang Zhang,Diandian Shi,Zhiqi Wang,Jianqing Li,Tao He,Jingli Wu,Jinhu Wu
The high-dispersed nano complex ZnO/Co 3 O 4 was first prepared by calcining the ZIF-8@ZIF-67 in Air. Then, the ternary mix-heterojunction ZnIn 2 S 4 /CdIn 2 S 4 /Co 3 O 4 (CdIn 2 S 4 /Z/C) was first in situ constructed by introducing nano complex ZnO/Co 3 O 4 into the CdIn 2 S 4 precursor solution via a solvent thermal reaction. Overall, the CdIn 2 S 4 /Z/C photocatalyst exhibits excellent performance in the photoconversion of CO 2 and H 2 O, which increased by 18.1%∼34.1% for CO, 36.8%∼73.9% for H 2 , and 21.1%∼40.6% for syngas (CO+H 2 ), respectively, compared with CdIn 2 S 4 . The CdIn 2 S 4 /Z/C-40 shows the highest H 2 -evolution rate of 1661.8 μmolg −1 h −1 , which is 87.5% higher than that of CdIn 2 S 4 (886.3 μmolg −1 h −1 ). The CdIn 2 S 4 /Z/C exhibits higher surface S-vacancy concentration, larger specific surface area, stronger light absorption, and photocurrent density than that of CdIn 2 S 4 . The band structure reveals that the ZnIn 2 S 4 /CdIn 2 S 4 /Co 3 O 4 forms a tandem internal electric field at the double heterojunction interface, which is beneficial to improve the migration of photocarrier. This work provides a feasible strategy for constructing synergistic mix-heterojunction photocatalyst for photoconversion of CO 2 and H 2 O.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2018
·
IF 2.891
Bo Gao,Weiping Chen,Jiadong Liu,Jiajun An,Lei Wang,Ying Zhu,Mika Sillanpää
Based on the concept of dynamic membrane and photocatalytic membrane reactor (PMR), the dynamic photocatalytic membrane reactor is developed via deposition of ZnIn 2 S 4 suspension on polyvinylidene fluoride (PVDF) membrane. Operating with effluent circulating to the photocatalytic membrane reactor, the highest total organic carbon (TOC) removal efficiency of 57% is obtained after 3 h reaction with 1.88 mg cm −2 photocatalyst under the flux of 84.06 L m −2 h −1 and light intensity of 50 mW cm −2 . Operating with continuous influent and effluent mode under the flux of 26.09 L m −2 h −1 and light intensity of 50 mW cm −2 , an average of 50% removal efficiency can be maintained during the 24 h photocatalytic reaction with photocatalyst loading of 1.88 mg cm −2 when the initial concentration of tetracycline is 10 mg L −1 . Under the same operating conditions, more than 92% removal efficiency can be maintained during 36 h photocatalytic reaction when lower initial concentration of 100 μg L −1 is applied. After this reaction, the characterizations show that the surface and structure of PVDF basement membrane are not affected.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 10
·3422-3427
·
IF 6.119
Yuqing Shao,Xinkui Wang,Zhaolin Dou,Xiaoyu Liang,Xinxin Zhang,Min Pang,Qiang Xu,Min Ji,Min Wang
Solar-driven CO2 conversion into fuels and sustainable energy has attracted increasing attention around the world. However, the efficiency of the transformation remains relatively low due to the rapid recombination of photogenerated charge carriers. In this work, we prepared a ZnIn2S4–ZnAlOx nanocomposite for visible light driven CO2 reduction. The thin layered structure facilitated the photoinduced charge carrier separation and transfer, and also gave excellent adsorption ability towards CO2 molecules. Such a nanocatalyst exhibited excellent activity in visible-light driven CO2 reduction with a CO optimal formation rate of 1100 μmol g−1 h−1, which is 5 times that over bulk ZnIn2S4, and the CO/H2 ratio was increased from 0.2 over bulk ZnIn2S4 to 1.5 over the ZnIn2S4–ZnAlOx composite. In situ FT-IR experiments indicated that CO2 was reduced on ZnIn2S4–ZnAlOx following a COOH* pathway. This work gives insights into the mechanism of the photocatalytic CO2 reduction reaction and inspiration to construct novel heterostructure materials for application in energy and environmental catalysis.
研究领域:
材料科学
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环境催化
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光化学
·
能源转化
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Huili Ye,Hao Wang,Bihong Zhang,Faqiong Zhao,Baizhao Zeng
Tremella-like ZnIn 2 S 4 (ZISt) and flower-like microsphere ZnIn 2 S 4 (ZISm) were synthesized via a straightforward hydrothermal method . It was found that the ZISt was superior to ZISm for photoelectrochemical (PEC) sensing because of its large surface area and high photocatalytic activity . A composite of ZISt and graphene (GR) was prepared and used for the PEC sensing of dopamine (DA). Here DA acted as an electron donor to scavenge the hole and inhibit the charge recombination. The GR enhanced visible light absorption and accelerated electron transfer, amplifying the photocurrent signal. The strong chelating coordination interaction between DA and Zn(II) in ZISt guaranteed the selective adsorption of target analyte. Thus the resulting ZISt/GR photoelectrode showed sensitive and selective PEC response to DA. Under the optimized conditions, the linear response range was from 0.01 to 20 μM, and the detection limit was down to 0.001 μM. Additionally, the sensor had good stability and reproducibility, and it could be used for the detection of DA in real samples.
研究领域:
材料科学
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分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
VACUUM
·
2024
·
IF 3.8
Difei Wang,Wei Chang,Zhiyuan Ren,Xiaojing Zhang,Yanpin Du,Bin Liu,Yunfeng Li
A novel visible-light-responsive ZnIn 2 S 4 /chitosan graphene aerogel (ZCGA) was prepared using a low-temperature hydrothermal self-assembly method for the adsorption and degradation of tetracycline. Infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) indicated interactions between ZnIn 2 S 4 and chitosan graphene aerogel (CGA). Under the irradiation of a 500 W xenon lamp, ZCGA exhibited excellent adsorption and photocatalytic degradation performance for tetracycline, with a removal rate exceeding 90 % within 180 min. This significant performance improvement is attributed to the high carrier transport properties of CGA, which greatly enhanced the activity of the photocatalytic reaction and also showed high efficiency in removing other types of organic pollutants. Radical trapping experiments further confirmed that the superoxide anion (·O 2 − ) is the main active species in the photocatalytic process. In addition, the monolithic aerogel has good recyclability and mechanical stability. This study not only demonstrates the great potential of ZCGA in the field of photocatalysis but also provides new ideas for designing efficient, recyclable, and visible light-responsive photocatalysts.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 20
·16113-16125
·
IF 2.779
Wang Yuanyuan,Wu Linqiu,Hu Yingfei,Du Hongxiu,Liu Pengfei,Hao Lingyun,Guan Hangmin,Zhao Yijie
Photocatalytic removal of hexavalent chromium (Cr(VI)) based on semiconductor is important under visible light for environment and energy. Herein, a visible light-responsive heterojunction composed of molybdenum disulfide and zinc indium sulfide was synthesized through a simple one-pot hydrothermal method to ensure full contact between the two components to efficiently improve the Cr(VI) reduction. The MoS 2 /ZnIn 2 S 4 composites build heterojunctions between MoS 2 and ZnIn 2 S 4 to inhibit recombination of photogenerated holes and electrons and provide the reaction sites to trap photogenerated electrons to participate in the reduction of Cr(VI). The highly efficient reduction of Cr(VI) was obtained by adjusting the proportion of molybdenum disulfide. It demonstrates that the 0.5 wt% MoS 2 /ZnIn 2 S 4 composite microstructures show the highest degradation rate of 0.1989 s −1 under visible light irradiation, 1.7 times of bare ZnIn 2 S 4 . Moreover, the MoS 2 /ZnIn 2 S 4 showed excellent stability during photocatalytic recyclable processes. This work encourages researchers to remove Cr(VI) by constructing effective heterojunction structures.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Yu Xia,Guofang Huang,Yan Fan,Xiaolong Zhao,Lei Wang,Jingwei Huang,Houde She,Qizhao Wang
Semiconductor heterojunctions could accelerate carrier separation and transfer for improving light-to-hydrogen (LTH) conversion efficiency. However, the lack of tight and efficient interfacial charge cross in three-dimensional semiconductor-based heterojunctions limits their practical application and the relevant profound understanding of the interfacial charge delivery. In this work, porphyrin (Cu)-based COF with a highly conjugated structure was deposited onto three-dimensional (3D) ZnIn2S4 by a facile solvothermal method to prepare a 3D/2D ZnIn2S4@CuP–Ph COF heterojunction. The content-optimized ZnIn2S4@CuP–Ph COF composite showed an excellent LTH conversion rate of up to 2667.94 μmol g–1 h–1, about 13.5 times higher than that of pristine ZnIn2S4. The significantly meliorated photocatalytic performance is attributed to the synergistically functioning contributors, that is, the fast interfacial charge transfer and the augmented light capturing capability after integration. Also, the work function results by DFT calculation reveals that the electrons of CuP–Ph COF (Φ = 4.41 eV) transfer from the interface electron delivery channels of the two components to ZIS (Φ = 7.03 eV) until the Fermi level of the two components reaches equilibrium. This moment, the work function of ZnIn2S4@CuP–Ph COF (Φ = 6.50 eV) lies between the two components, and an electron accumulation region is formed on the side of ZIS. Additionally, the free-energy barriers of hydrogen evolution dominated by ZnIn2S4@CuP–Ph COF (0.0955 eV) is much lower than that of ZnIn2S4 (0.1256 eV). This study possesses certain guiding significance for the design of organic–inorganic heterojunction photocatalysts for efficient LTH conversion.
研究领域:
材料科学
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能源科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2022
·
IF 0.847
Mengqing Li,Weiliang Qi,Jiuyang Yu,Lijuan Shen,Xuhui Yang,Siqi Liu,Min-Quan Yang
Photocatalytic anaerobic organic oxidation coupled with H 2 evolution represents an advanced solar energy utilization strategy for the coproduction of clean fuel and fine chemicals. To achieve a high conversion efficiency, the smart design of efficient catalysts by the right combination of semiconductor light harvesters and cocatalyst is highly required. Herein, we report a composite photocatalyst composed of noble metal-free transition metal nitride Ni 3 FeN decorated on 2D ultrathin ZnIn 2 S 4 (ZIS) nanosheets for selective oxidation of aromatic alcohols to aldehydes pairing with H 2 production. In the composite, ultrathin ZIS serves as a light harvester that greatly shortens the diffusion length of photogenerated charges, while the metallic nitride Ni 3 FeN acts as an advanced cocatalyst which not only captures the photoelectrons generated from the ultrathin ZIS to promote the charge separation, but also provides active sites to lower the overpotential and accelerate the H 2 reduction. The best photocatalytic performance is found on ZIS/1.5% M-Ni 3 FeN, which shows a H 2 generation rate of 2427.9 µmol g −1 h −1 and a benzaldehyde (BAD) production rate of 2460 µmol g −1 h −1 , about 7.8-fold as high as that of bare ZIS. This work is anticipated to endorse the exploration of transition metal nitrides as high-performance cocatalysts to promote the coupled photocatalytic organic transformation and H 2 production.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
Micro & Nano Letters
·
2021
·Vol. 16
·期 10
·500-505
·
IF 1.102
Dejuan Fa,Yuqing Miao
By hydrothermal reaction, the hydrangea-like ZnS/ZnIn 2 S 4 microspheres were prepared in the presence of thioacetamide. X-ray photoelectron spectroscopy and high resolution transmission electron microscopy confirmed that the ultra-long nanowires are composed of ZnS and ZnIn 2 S 4 . Scanning electron microscopy showed the morphology of ultra-thin nanosheets with an average thickness of 8.5 nm cross from inside to outside, forming ZnS/ZnIn 2 S 4 microspheres with a porous diameter of about 2.8 μm. Nitrogen adsorption desorption isotherm determined that the BET specific surface area of the microspheres was 109.19 m 2 /g which showed that they have a large specific surface area. The obtained ZnS/ZnIn 2 S 4 microspheres showed broad absorbance ranging from UV (200 nm) to visible (520 nm) with low indirect band gaps of 2.08 eV. It leads to outstanding visible-light-driven photocatalysis for the degradation of xylenol orange (XO) and thymol blue (TB) in water, and the two dyes were almost completely degraded after 60 and 135 min, respectively. This provides new potential to explore nanomaterials for efficient photo-driven degradation of organic dyes under visible light irradiation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2017
·
IF 2.059
Feng Guo,Yi Cai,Weisheng Guan,Hui Huang,Yang Liu
It is a widespread concern to address the antibiotics in water with low-cost and eco-friendly photocatalysts that could efficiently harvest solar light. Herein, we designed an efficient photocatalyst by integrating the lamellar g-C 3 N 4 into Znln 2 S 4 microflowers through a one-step hydrothermal method . The as-synthesized g-C 3 N 4 /Znln 2 S 4 heterojunction photocatalysts exhibited evidently enhancement on the photocatalytic activities for the degradation of tetracycline (100 mL, 20 mg/L) compared with pristine g-C 3 N 4 and Znln 2 S 4 . Significantly, g-C 3 N 4 /Znln 2 S 4 composite with loading 50 wt.% g-C 3 N 4 showed the highest photocatalytic performance (almost 100% degradation within 120 min), which was around 40 and 22.8 times higher than that of g-C 3 N 4 and Znln 2 S 4 , respectively. This enhanced photocatalytic activity of g-C 3 N 4 /Znln 2 S 4 is mainly attributed to the formation of heterostructure that can efficiently promote the transfer of photoinduced electrons and holes between g-C 3 N 4 and ZnIn 2 S 4 , restricting the recombination of electron-hole pairs. In addition, a possible mechanism was also proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）