CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Feng Li,Xiaolong Tang,Zhuofeng Hu,Xiangming Li,Fang Li,Yu Xie,Yanbin Jiang,Changlin Yu
Hydrogen peroxide (H 2 O 2 ) is a green oxidant that is widely used in daily life and industry. Artificial photocatalytic synthesis of H 2 O 2 is a green and sustainable scheme, but the high complexation rate of electron-hole pairs during photocatalysis and the low activation capacity of the catalyst for O 2 greatly inhibit the oxygen reduction reaction. Herein, the first synergistic modification of In 2 S 3 using ion doping and vacancy modulation is used in this paper. An In 2 S 3 -based photocatalyst containing S vacancies and Ga 3+ ions is designed and synthesized. After continuous irradiation under visible light ( λ ≥ 420 nm) for 1 h, the H 2 O 2 concentration of the system reaches 352.58 μmol L –1 , which is 7.5 times than that of pure In 2 S 3 , and the apparent quantum yield at 450 nm is 4.64%. Appropriate concentrations of S vacancies promoted O 2 adsorption, and theoretical calculations demonstrates that Ga 3+ ions and S vacancies synergistically promote O 2 activation and more favorable for 2e – oxygen reduction reaction. All these phenomena facilitate H 2 O 2 generation. Furthermore, ESR analysis and radical trapping experiments show that the interaction between superoxide anion radicals (•O 2 – ), singlet oxygen ( 1 O 2 ), h + , and proton donor (isopropanol) in the solution phase plays a key role in the photocatalytic synthesis of H 2 O 2 , which has been largely neglected in previous studies. We suggest that the S vacancy-regulated Ga 3+ ion-doped In 2 S 3 catalyst could provide a reference for the design of high-performance materials for the photocatalytic production of hydrogen peroxide.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Chenglong Ding,Yao Li,Wenfei Xiao,Qi Chen,Yanming Li,Jingfu He,Changli Li
Constructing p-Si based heterojunction photocathode is a promising means to convert solar energy into storable hydrogen fuel . The favorable energy band alignment between p-Si absorber and electron transport layer (ETL) is crucial to realize efficient photogenerated carrier separation and transport during photoelectrochemical water splitting . The trade-off between large Fermi level difference and optimized conduction band offset (CBO) in p-Si heterojunction is a major limiting factor for achieving high solar-to-hydrogen efficiency. Herein, we introduced a double CdS/In 2 S 3 ETLs on p-Si to optimize band alignment and facilitate the charge carrier transport at the interface. The p-Si/CdS/In 2 S 3 system presents a step-like energy band alignment and the appropriate CBO at p-Si/CdS (0.46 eV) and CdS/In 2 S 3 (0.25 eV) interface suppress the charge recombination and efficiently extract photogenerated electrons. The Electrochemical impedance spectroscopy measurement shows a lower charge transfer resistance for the double ETLs compared with the single ETL counterparts. As a result, the p-Si/CdS/In 2 S 3 /Pt photoelectrode exhibits a positive onset potential of ∼0.5 V RHE and a high applied bias photo-to-current efficiency of 5.6 % under AM 1.5G illumination. The strategy of band alignment engineering provides an effective way to improve the device performance and can be extended to other emerging semiconductor thin film photocathodes.
研究领域:
材料科学
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能源科学
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APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Xiaolong Tang,Shuxin Zhang,Shuyuan Yu,Yanbin Jiang,Changlin Yu
The photocatalytic production of H 2 O 2 from H 2 O and O 2 via solar light-driven is a low-cost, safe, and environmentally friendly route for H 2 O 2 production, but the high carrier recombination rate and insufficient active sites in the photocatalytic process greatly limit the efficiency of H 2 O 2 generation. Here, we combined both vacancy modification and heterojunction engineering strategies to modify In 2 S 3 , successfully constructing In 2 S 3 /Ni Schottky junctions (SvIS/Ni) with rich S vacancies via a two-step calcination-photo-deposition method. The introduction of rich S vacancies and the formation of Ni Schottky both enhance the absorption of visible light by In 2 S 3 and substantially improve its carrier separation efficiency. Notably, we also found that SvIS/Ni is capable of realizing multi-channel reaction pathways for oxygen reduction and water oxidation to promote the H 2 O 2 generation. Benefiting from the above advantages, the H 2 O 2 yield of SvIS/Ni in the pure water system under visible light irradiation could reach 1146.6 µmol·g −1 h −1 , which is 13.4 times that of pure In 2 S 3 , and the apparent quantum yield (AQY) at 400 nm can reach 3.58 %. This study provides a novel idea for designing highly efficient photocatalysts by combining defect engineering and heterojunction modification strategies.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
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IF 14.229
Erbing Hua,Shu Jin,Xiaorong Wang,Shuang Ni,Gang Liu,Xiaoxiang Xu
In this work, novel 2D type-II p-n heterojunctions La 2 Ti 2 O 7 /In 2 S 3 have been fabricated. The heterojunctions exhibit much improved photocatalytic activity over individual moieties and their physical mixtures in which 18-fold increment in hydrogen production has been achieved under visible light illumination (λ ≥ 400 nm). Their superior activities stem from intimate face-to-face contact between La 2 Ti 2 O 7 and In 2 S 3 in the heterojunctions which guarantee facile charge interchange. Photoelectrochemical analysis suggests that efficient charge separations occur at the interfaces of the heterojunctions and contributes to a prolonged charge lifetime as well as the much enhanced photocatalytic activities. Such a simple strategy by fabricating ultrathin type-II p-n heterojunctions also warrant promising applications in other areas such as optoelectronics, sensors etc. whereby efficient charge separations are needed.
研究领域:
材料化学
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光催化
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纳米材料
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能源科学
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半导体物理
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环境催化
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可持续能源
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Shuxin Zhang,Kun Liu,Shuyuan Yu,Zifeng Lin,Yu Xie,Yanbin Jiang,Longfu Wei,Changlin Yu
Traditional propylene oxide (PO) production processes consume large amounts of organic feedstock and release hazardous by-products. The synthesis of PO via the epoxidation of propylene using O 2 is an ideal route offering 100% atomic economy. However, achieving high selectivity and high efficiency under mild conditions remains a significant challenge. In this study, we have developed a visible-light-driven tandem reaction system combining a carbon- and oxygen-co-doped three-dimensional spherical indium sulfide (C,O-In 2 S 3 ) photocatalyst with titanium silicate molecular sieve (TS-1), thereby achieving the distinctly selective oxidation of propylene at ambient temperature. Assembled from ultra-thin nanosheets, the three-dimensional structure of C,O-In 2 S 3 provides abundant active sites and mass transfer space, with carbon‑oxygen co-doping narrowing the bandgap and enhancing visible light absorption. In a pure water system, the H 2 O 2 yield of C,O-In 2 S 3 reached 1450.40 μmol·g −1 ·h −1 , which is 17.8 times that of pristine In 2 S 3 . Utilizing the excellent compatibility of the methanol/water system, the photocatalytic generated H 2 O 2 was directly employed in the TS-1-catalysed epoxidation of propylene, achieving a PO yield of 2230.03 μmol·g −1 within 2 h with a selectivity of 99.1%. This work applies sulfide-based photocatalysts to a tandem reaction involving photocatalytic H 2 O 2 production and propylene epoxidation, providing a new strategy for the green, safe and efficient synthesis of PO.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Jushi Weng,Jun Chen,Yifei Xu,Xinru Hu,Chuangyun Guo,Yang Yang,Jingyi Sun,Lianshe Fu,Qing Wang,Jiamin Wei,Tinghai Yang
Increasing the exposure of active sites and improving the intrinsic activity are necessary considerations for designing a highly efficient photocatalyst. Herein, an In 2 S 3 /AgI stable Z-scheme heterojunction with highly dispersed AgI nanoparticles (NPs) is synthesized by the mild self-templated and in-situ ion exchange strategy. Impressively, the optimized In 2 S 3 /AgI-300 Z-scheme heterojunction exhibits superior photodegradation activity (0.020 min −1 ) for the decomposition of insecticide imidacloprid (IMD), which is extremely higher than that of pure In 2 S 3 (0.002 min −1 ) and AgI (0.013 min −1 ). Importantly, the three-dimensional excitation-emission matrix (3D EEMs) fluorescence spectra, high-resolution mass spectrometry (HRMS), the photoelectrochemical tests, radical trapping experiment, and electron spin resonance (ESR) technique are performed to clarify the possible degradation pathway and mechanism of IMD by the In 2 S 3 /AgI-300 composite. The enhanced photocatalytic performance is attributed to the highly dispersed AgI NPs on hierarchical In 2 S 3 hollow nanotube and the construction of In 2 S 3 /AgI Z-scheme heterojunction, which can not only increase active site exposure, but also improve its intrinsic activity, facilitating rapid charge transfer rate and excellent electron-hole pairs separation efficiency. Meanwhile, the practical application potential of the In 2 S 3 /AgI-300 composite is systematically investigated. This study opens a new insight for designing catalysts with high photocatalytic performance through a convenient approach.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
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IF 19.503
Huan Chai,Lili Gao,Peng Wang,Feng Li,Guowen Hu,Jun Jin
The application of hematite(α-Fe 2 O 3 )-based photoanodes in photoelectrochemical (PEC) water oxidation has been hampered by disgusting charge recombination and difficult carrier migration. Herein, we modified indium sulfide (In 2 S 3 ) nanoparticles on the surface of fluorine-doped α-Fe 2 O 3 (F-Fe 2 O 3 ) nanorods . The In 2 S 3 /F-Fe 2 O 3 heterostructure bonded by S-O chemical bond shows a superior photocurrent density of 2.21 mA cm −2 at 1.23 V versus reversible hydrogen electrode (around 3.45 times higher than that of pristine α-Fe 2 O 3 ). In-depth investigations show that In 2 S 3 /F-Fe 2 O 3 has significantly increased donor density and decreased charge transfer resistance. Simultaneously, In 2 S 3 decorated with S-O bond could reduce the surface defect states. Further studies of energy band location reveal the formation of type-Ⅱ heterojunction between In 2 S 3 and F-Fe 2 O 3 . The unique heterostructure provides a powerful driving force for charge separation and transport, resulting in satisfactory bulk phase and surface separation efficiency. This work provides ideas for the design and study of multicomponent photoanodes.
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SCIENCE OF THE TOTAL ENVIRONMENT
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2019
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IF 5.589
Jing Wang,Tianli Yang,Ren He,Kehui Xue,Renrui Sun,Wenlei Wang,Juntao Wang,Ting Yang,Yuanlan Wang
Ternary heterostructure nanotubes of In 2 S 3 -CdIn 2 S 4 @X(X = Ag, Ag 3 PO 4 , AgI) were synthesized with enhanced photocatalytic activity for efficiently degrading pollutants. Electron beam irradiation was employed to artificially introduce interface defects to the heterostructure nanotubes. The experimental results for degrading carmine and Cr 6+ under visible light irradiation showed that the photocatalytic efficiency of In 2 S 3 -CdIn 2 S 4 was improved to some extent by the introduction of silver compounds. DRS results confirmed that the band gaps of In 2 S 3 -CdIn 2 S 4 were reduced to 1.62 eV and 1.58 eV by introducing Ag 3 PO 4 and AgI, respectively. Interestingly, the band gap of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation was further reduced to 1.56 eV, resulting in that the degradation time of both Cr 6+ and carmine by In 2 S 3 -CdIn 2 S 4 @AgI after high-energy electron beam irradiation was shortened to only 5 min. The XRD spectra of the photocatalysts after five cycles could maintain the original crystal form to a large extent. The O H stretching vibration peaks of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation at 3387 cm −1 became wider and sharper, thus indicating that the number of free hydroxyl groups on the heterostructure surface significantly increased. PL results showed that electron beam irradiation could significantly reduce the PL emission peak and enhance the utilization of photogenerated charge carriers. EIS results further confirmed that In 2 S 3 -CdIn 2 S 4 @AgI processed by electron beam irradiation had higher photogenerated electron-hole separation efficiency. Based on the experimental results, a feasible reaction pathway and photocatalytic mechanism for the degradation of carmine was investigated. ESR results showed that the main active groups in the whole photocatalytic system were •O 2 – and h + .
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.3
Yancheng Zhou,Chang Feng,Minyi Liang,Zhuoyuan Chen,Jiangping Jing,Li Ma,Jian Hou
Photoinduced cathodic protection (PICP) technology exhibits substantial research significance in the field of corrosion science. This work designed and fabricated a nanocomposite-structured photoelectrode (Ti-MIS/ZIS) composed of an In₂S₃/MgIn₂S₄ composite (MIS) and ZnIn₂S₄ (ZIS) on an etched titanium sheet via a two-step hydrothermal method. The Ti-MIS/ZIS photoelectrode exhibits a significantly broadened visible-light absorption range as well as rational band alignment. The uniform anchoring of ZIS nanosheets on the Ti-MIS surface constructs a gradient band structure, and the resultant built-in electric field drives the migration of photogenerated electrons toward the conduction band of Ti-MIS, thus enabling efficient carrier separation. The rational band structure of Ti-MIS/ZIS enables abundant generation and directional migration of photogenerated electrons to the 316 L SS surface, thus realizing effective PICP. Under AM 1.5 G illumination, the Ti-MIS/ZIS photoelectrode coupled with 316 L SS achieves a photoinduced current density of 40 μA·cm⁻² and a negative shift of open-circuit potential to −0.47 V, exhibiting remarkably superior PICP performance to other photoelectrodes.Via band engineering design, this work achieves precise directional regulation of photogenerated carrier dynamics, laying a direct theoretical foundation for the development of high-efficiency heterojunction photoelectrode systems. Moreover, the revealed interfacial charge transfer mechanism exhibits universal guiding significance for heterojunction systems.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Xiaofei Fu,Junwu Tao,Zuming He,Yong Gao,Yongmei Xia,Zizhou Zhao
High-efficiency interfacial charge transfer is the key to achieve better spatial carrier separation, and thus to develop advanced heterogeneous photocatalysts for environmental remediation. However, It still remains a great challenge to design and exploit the effective charge transfer scheme. Herein, a novel Z-scheme In 2 S 3 /BiOBr with S−O covalent bonding was prepared by hydrothermal and subsequent thermal annealing methods. The obtained photocatalysts were systematically characterized and used for tetracycline hydrochloride degradation and Cr(VI) reduction in aqueous solution. As a result, the optimized In 2 S 3 /BiOBr heterostructure (IS/BOB-39) exhibited superior photocatalytic activities for tetracycline hydrochloride degradation and Cr(VI) reduction under simulated solar light irradiation compared with individual materials. The Z-scheme transfer mechanism was corroborated by trapping experiments, ESR and XPS analysis , which provided an effective transfer pathway for spatial separation of carriers. Moreover, the formation of chemical S−O bond between In 2 S 3 and BiOBr, which acted as a specific bridge to expediently transmit interfacial electrons, showed a synergistic effect with Z-scheme transfer model on the significantly enhanced photocatalytic performance. In addition, the In 2 S 3 /BiOBr heterojunction presented excellent cycle stability, resulting from the tight heterointerface. This work provides a promising approach to design and fabricate high effect Z-scheme heterojunction in wastewater treatment.
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JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Kailian Zhang,Man Zhou,Kai Yang,Changlin Yu,Ping Mu,Zhenzhen Yu,Kangqiang Lu,Weiya Huang,Wenxin Dai
The low-usage of solar energy and the sluggish separation efficiency of the photogenerated electrons/holes pairs are the obstacles in the practical application of photocatalysts. The integration of upconversion and Z-scheme heterojunction is expected to break the barriers to achieve the efficient charge separation and broaden near-infrared light absorption . Herein, an effective indirect Z scheme AgInS 2 /In 2 S 3 heterostructure with carbon quantum dots (CQDs, as the electron conduction medium) and Lu 3 NbO 7 :Yb, Ho (as upconversion function) has been successfully synthesized. Consequently, the Lu 3 NbO 7 : Yb, Ho/CQDs/AgInS 2 /In 2 S 3 heterostructure exhibited superior photocatalytic activities for Cr(VI) reduction and H 2 O 2 production, reducing 99.9% of Cr(VI)(20 ppm, 15 min) and 78.5% of Cr(VI) (40 ppm, 30 min) with visible light irradiation as well as 94.0% of Cr(VI) (20 ppm, 39 min) under NIR light irradiation. Simultaneously, the heterostructure could generate 902.9 μM H 2 O 2 for 5 h under visible light irradiation. The intensive photocatalytic properties could primarily be attributed to the boosted light absorption capacity, the improved solar-to-energy conversion by the remarkable upconversion capacity of Lu 3 NbO 7 : Yb, Ho/CQDs and the faster charge transfer through a Z-schematic pathway. This work is anticipated to open a novel “window” for designing the efficient photocatalysts by coupling of Lu 3 NbO 7 : Yb, Ho and CQDs.
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TALANTA
·
2024
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IF 5.6
Haoran Cheng,Yifan Wang,Yirui Zhao,Hongman Hou,Gongliang Zhang,Jingran Bi,Shuang Yan,Hongshun Hao
Salmonella enteritidis ( SE ) is a food-borne pathogens that can cause acute gastroenteritis. With the increasing social attention to food safety, the detection method of SE has attracted wide attention. In response to the demand for efficient detection methods of SE , this study constructed a novel dual-mode photoelectrochemical-electrochemical (PEC-EC) aptamer-based biosensor. The sensor was constructed using Bi 4 NbO 8 Cl/In 2 S 3 heterojunction as the electrode substrate material, the hybridization chain reaction (HCR) and dye sensitization were used as the signal amplification strategies. Bi 4 NbO 8 Cl/In 2 S 3 heterojunction could provide an excellent initial photocurrent response for the sensing platform, and the HCR was opened by the end of complementary DNA (cDNA) and generated an ultra-long DNA double-stranded (dsDNA) “super structure” on the surface of the electrode, which could be embedded with a large number of methylene blue (MB) as the bifunctional probes. Thus, dual-mode output was achieved via the PEC and EC activity of MB. Under the optimized conditions, the PEC and EC signal responses of the system were linear to the logarithm of SE concentration in a range from 1.5 × 10 2 CFU/mL to 1.5 × 10 7 CFU/mL. The detection limits were found to be 12.9 CFU/mL and 12.3 CFU/mL using the PEC and EC methods, respectively. The constructed dual-mode biosensor exhibited good performance for real sample analysis, and demonstrated great application potential in the field of SE rapid detection. Moreover, this dual-mode detection strategy provided more accurate and reliable results than the single-mode output.
研究领域:
食品科学
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生物传感技术
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微生物检测
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危险品化学品经营许可证（带存储）