Nanomaterials
·
2021
·Vol. 11
·期 11
·3122
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IF 5.076
Rao Fu,Yinyan Gong,Can Li,Lengyuan Niu,Xinjuan Liu
The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn2S4/In(OH)3nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn2S4/In(OH)3/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H2evolution rate of CdIn2S4/In(OH)3/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn2S4and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn2S4to 97% for CdIn2S4/In(OH)3/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.
研究领域:
材料科学
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环境科学
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能源科学
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DOI
高影响因子
RARE METALS
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2025
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IF 11
Wang Dan-Dan,Xu Meng-Yang,Lin Zhao-Xin,Wu Jia-Hui,Yang Wei-Ting,Li Hong-Ji,Su Zhong-Min
The goal of photocatalytic CO 2 reduction is to obtain a single energy-bearing product with high efficiency and stability. Consequently, constructing highly selective photocatalysts with enhanced surface and optoelectronic properties is crucial for achieving this objective. Here, we have developed a simple one-pot vulcanization method to synthesize a MIL-68(In)-derived CdIn 2 S 4 /In 2 S 3 heterojunction that exhibited stable and high selectivity. Multiple characterizations of the CdIn 2 S 4 /In 2 S 3 heterojunction revealed a hierarchical tubular structure with numerous surface reactive sites, a high visible-light utilization rate ( λ < 600 nm), efficient charge separation, and a prolonged charge-carrier lifetime. Moreover, an S-scheme charge transfer mechanism, based on the interleaved band between the two components, improved the reduction capability of the electrons. Benefiting from the compositional and structural synergy, the yield CO by CdIn 2 S 4 /In 2 S 3 -250 (CI-250) reached 135.62 μmol·g −1 ·h −1 , which was 49.32 times and 32.88 times higher than that of In 2 S 3 and CdIn 2 S 4 , respectively. The CdIn 2 S 4 /In 2 S 3 heterojunction exhibited a quantum efficiency of 4.23% with a CO selectivity of 71%. Four cycle tests confirmed the good stability and recyclability of the CI-250. This work provides a new approach for designing and preparing high-performance hollow MOFs-based photocatalysts for scalable and sustainable CO 2 reduction.
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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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Minghui Yu,Qi Hu,Xiaoyu Gong,Hao Yu,Shuang Wang,Zhiqiang Li,Yanyan Chen,Shenjie Li
In this study, CdIn 2 S 4 /MoS 2 composite structure was prepared by a simple two-step hydrothermal synthesis method, and the CdIn 2 S 4 /MoS 2 composite structure samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV–vis diffuse reflectance spectroscopy (UV–vis). Due to the effective loading of MoS 2 on the surface of CdIn 2 S 4 particles, the photocatalytic performance of CdIn 2 S 4 /MoS 2 composite material is significantly improved under visible light irradiation (λ = 420 nm), which indicating the effective inhibit the recombination of photogenerated electron holes . Meanwhile, the visible light response of CdIn 2 S 4 is increased and the life of photoexcitation carrier is prolonged. The CdIn 2 S 4 /MoS 2 (sample 2CM) composite sample with mole content of 9% has the highest catalytic hydrogen production activity, and its hydrogen production rate is 293 μmol h −1 g −1 , which is more than 3 times that of sample C. After 4 cycles of photocatalytic experiments, the photocatalytic activity is still stable, and the XRD diffraction peak does not appear obvious shift, which provides a new way for the design and preparation of efficient and stable photocatalytic materials.
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
Advanced Materials Interfaces
·
2020
·Vol. 7
·期 6
·1901947
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IF 4.948
Weiwei Xu,Wei Tian,Linxing Meng,Fengren Cao,Liang Li
Due to its suitable band energy level and small band gap, CdIn 2 S 4 is a promising photoanode for photoelectrochemical (PEC) water splitting. Nevertheless, the serious charge recombination at the back contact and photoelectrode/electrolyte interface severely hinders its PEC activity. Herein, a facile magnetron ion-sputtering strategy is adopted to fabricate TiO 2 underlayer and NiO overlayer to modify both sides of CdIn 2 S 4 photoanode. The TiO 2 underlayer serves as an electron transport layer to promote electrons transfer from CdIn 2 S 4 to fluorine-doped tin oxide substrate and hinder holes' transportation, thus suppressing the charge recombination at the back contact. NiO, as a p-type semiconductor, forms a p-n heterojunction with CdIn 2 S 4 , inducing a built-in electric field to facilitate charge transport. Meanwhile, NiO overlayer acts as a co-catalyst to enhance surface reaction kinetics, and thereby improves the carrier injection efficiency at photoelectrode/electrolyte interface. As a result, the optimum TiO 2 /CdIn 2 S 4 /NiO photoanode exhibits photocurrent as high as 0.6 mA cm −2 at 1.23 V versus reversible hydrogen electrode, which is about 2.3 times that of bare CdIn 2 S 4 . This work provides an effective strategy to manipulate the charge carrier dynamics to improve the PEC activity of photoanode.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2023
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IF 4.3
Chenglin Zhang,Junxian Qin,Changqing Yang,Yun Hu
The conversion of the volatile organic pollutant to industrially valuable chemicals using photocatalysis is a promising endeavor. Herein, ZnS/CdIn 2 S 4 heterojunction with rich sulfur vacancy was constructed via a simple one-pot method for the selective photocatalytic oxidation of toluene to benzaldehyde . ZnS/CdIn 2 S 4 has a suitable band gap and valence band position, thus possessing a mild oxidation ability to generate benzaldehyde while avoiding excessive oxidation. In addition, the presence of tightly bound contact interfaces and sulfur vacancy in ZnS/CdIn 2 S 4 heterojunction facilitates the rapid separation of photogenerated electron-hole. These characteristics of the heterojunction synergistically promoted the selective photocatalytic oxidation of toluene, resulting in ZnS/CdIn 2 S 4 exhibiting the highest benzaldehyde production rate (1025 μmol g −1 h −1 ) and the highest conversion rate (13.7%), which were 93.1 and 56.9 times higher than those of ZnS and CdIn 2 S 4 , respectively. Furthermore, a possible response mechanism has been suggested based on a series of experiments. This study provides new insights into the combination of volatile organic pollutant degradation and high-value chemicals production.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Chao Liu,Wen Xiao,Guiyun Yu,Qiang Wang,Jiawei Hu,Chenghao Xu,Xinyi Du,Jianguang Xu,Qinfang Zhang,Zhigang Zou
Developing efficient heterojunction photocatalysts that have a high charge carrier separation rate and improved light-harvesting capacity is a crucial step in solving energy crisis and reducing environmental pollution. Herein, we synthesized few-layered Ti 3 C 2 MXene sheets (MXs) by a manual shaking process, and combined with CdIn 2 S 4 (CIS) to construct novel Ti 3 C 2 MXene/CdIn 2 S 4 (MXCIS) Schottky heterojunction through a solvothermal method. The strong interface between two-dimensional (2D) Ti 3 C 2 MXene and 2D CIS nanoplates led to enhanced light-harvesting capacity and promoted charge separation rate. Additionally, the presence of S vacancies on the MXCIS surface helped to trap free electrons. The optimal sample, 5-MXCIS (with 5 wt% MXs loading), exhibited outstanding performance for photocatalytic hydrogen (H 2 ) evolution and Cr(VI) reduction under visible light due to the synergistic effect of enhanced light-harvesting capacity and charge separation rate. The charge transfer kinetics was thoroughly studied using multiple techniques. The reactive species of • O 2 − , • OH and h + were generated in 5-MXCIS system, and e − and • O 2 − radicals were found to be the main contributors to Cr(VI) photoreduction. Based on the characterization results, a possible photocatalytic mechanism for H 2 evolution and Cr(VI) reduction was proposed. On the whole, this work provides new insights into the design of 2D/2D MXene-based Schottky heterojunction photocatalysts for boosting photocatalytic efficiency.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Wenwen Yang,Shan-Shan Xu,Yawen Niu,Yanhui Zhang,Juan Xu
The development of photocatalysts with high catalytic activity and high stability is one of the effective ways to alleviate the energy shortage. A simple hydrothermal method was used to deposit a two-dimensional (2D) non-precious-metal cocatalyst Ni12P5 on the surface of three-dimensional (3D) CdIn2S4 in situ. A 2D/3D Ni12P5/CdIn2S4 heterostructure with close contact was obtained in this work. Its hydrogen production activity can reach 5.01 mmol/g/h, which was about 18 times higher than that of pure CdIn2S4. The apparent quantum yield of 3% Ni12P5/CdIn2S4 at 400 nm was 23.5%. In addition, the band structures of Ni12P5 and CdIn2S4 were calculated according to the experimental data of UV–visible diffuse reflection, Mott–Schottky analysis, and XPS valence band spectrum characterization. With the help of XPS testing, the transfer direction of photogenerated electrons and holes in the composite catalyst was predicted, and then the possible photocatalytic mechanism was speculated.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
MingCheng Yang,Chuan Lai,ChunTan Chen,Ying Li,Lu Chen
Fabricating type-II heterostructures to accelerate the charge separation of the photocatalysts has been considered as a prospective strategy to improve the photocatalytic performance. Herein, a novel type-II photocatalytic heterojunction was fabricated by integrating Cu 3 P on nanosheet CdIn 2 S 4 to accelerate carrier separation, enhancing the RhB degradation and H 2 evolution performance. The Cu 3 P/CIS composite achieved complete RhB degradation within 40 min and an impressive 95 % photodegradation efficiency for RhB. Quenching experiments and electron spin resonance (ESR) measurements confirmed that the ·O 2 – plays an important role in the degradation of RhB. Meanwhile, the optimal Cu 3 P/CdIn 2 S 4 photocatalyst shows a high hydrogen evolution rate of 1058 umol ·g −1 ·h −1 , which was 7 and 1.8 times higher than that of pure CIS. The outstanding photocatalytic performance was ascribed to the robust built-in electric field at the interface between two components driving force for electron migration.
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
Surfaces and Interfaces
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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
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jie Xu,Hongji Li,Huimin Feng,Yuqin Ma,Dandan Wang,Jianwei Zhu
The removal of refractory organic contaminants in the environment is vital, but developing highly active catalysts with a simple synthesis process remains a challenge. Herein, NH 2 -MIL-125(Ti) (Ti-MOF) as a template, Ti 3+ -TiO x clusters of different quantities were embedded in the CdIn 2 S 4 nanosheets to construct Ti 3+ -TiO x /CdIn 2 S 4 (TiCIS) heterojunction by an in-situ self-assembly strategy, which had a hollow structure, strong visible light absorption, high separation rate of carriers, and more active sites. During the degradation experiment of Rhodamine B (RhB), TiCIS25 exhibited the best photocatalytic performance, and 98.0% of RhB was degraded within 60 min of visible irradiation. The intermediates in the RhB degradation and their ecotoxicity were analyzed, which revealed that RhB degradation was a detoxification process. The radical trapping experiments and electron spin resonance (ESR) tests indicated that e - , 1 O 2 , and ·O 2 - are the main active species for RhB degradation. Moreover, a possible photocatalytic mechanism was proposed based on electrochemical tests. The photodegradation performance of the as-prepared TiCIS catalyst under different reaction parameters (authentic water matrices, initial pH, coexisting anions, organic matter concentration, actual sunlight, reaction temperature, and multiple pollutants) and circulating experiments, as well as the photo-reduction process CO 2 , reflected that TiCIS25 possessed excellent practicability, cyclic stability, and universal applicability. Above all, TiCIS25 exhibited great potential in photocatalytic processes, and the work provided a feasible strategy for designing high-performance 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
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xuanxuan Hao,Zhimin Liu,Yaxin Li,Waner Hou,Tongtong Zheng,Leqian Hu
In this study, a near-infrared (NIR) electrochemiluminescence (ECL) emitter CdIn 2 S 4 was synthesized by a convenient hydrothermal strategy. The ECL properties of the obtained CdIn 2 S 4 were examined in the presence of potassium persulfate coreactant at an excitation potential of − 1.25 V. The low trigger voltage of CdIn 2 S 4 may be ascribed to its lower bandgap. This lower excitation potential could effectively reduce the side-effects induced by high voltages, while maintaining the biological activity of antibodides and antigens. The ECL features of CdIn 2 S 4 were also investigated, demonstrating that CdIn 2 S 4 exhibited excellent NIR characteristics, and surface state transitions led to the ECL emission. Importantly, CdIn 2 S 4 was introduced into ECL and electrochemical impedance spectroscopy (EIS) to establish a dual-mode immunosensing interface. Meanwhile, AuNPs@g-C 3 N 4 with excellent properties were used to promote electron transmission and increase the immobilization amount of zearalenone (ZEA) antibodies in the dual-mode sensing system. The developed immunosensing strategy displayed superior sensing performance in ZEA analysis. The detection limits of ZEA were 30 fg mL −1 (ECL model) and 10 fg mL −1 (EIS model), respectively. The desirable recovery results of ZEA in corn samples prove the application potential of the NIR emitter CdIn 2 S 4 in developing a dual-mode immunosensing system for early real-time use.
研究领域:
分析化学
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生物医学工程
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食品安全检测
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产品关联
DOI
高影响因子
VACUUM
·
2024
·
IF 3.8
Zonghan Hu,Qi Wang,Zihang Wang,Lanlan Zhang,Chengwei Hu,Yuanhu Lei,Yupei Qiao,Bing Lv
Currently, the two predominant heterojunction types, namely type II and S-scheme heterojunctions, are extensively employed in photoelectrochemical (PEC) water splitting for hydrogen production. However, type II heterojunctions suffer from the drawback of diminished oxidation-reduction capability. In this work, S-scheme CdIn 2 S 4 /CuS (CIS/CuS) heterojunction nanoblocks (NBs) photoanode is constructed for the first time by a hydrothermal and the successive ionic layer adsorption and reaction (SILAR) methods. The heterojunction achieves a photocurrent density of up to 4.0 mA/cm 2 at 0 V vs. Ag/AgCl, 2.37 times that of the pure CIS NBs photoanode. X-ray photoelectron spectroscopy (XPS), Tauc plots, Mott-Schottky (M − S) tests and density functional theory (DFT) calculations reveal the formation of S-scheme band structure between the interface of CIS and CuS. As a result, the significantly enhanced PEC water splitting performance of CIS/CuS NBs photoanode is attributed to the superior light absorption ability of CuS and the effective charge separation achieved by S-scheme band structure between the interface of CIS and CuS. This work also provides new ideas and strategies for designing efficient S-scheme heterostructures for efficient PEC water splitting.
研究领域:
材料科学
·
能源科学
·
物理化学
✓ 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）