Surfaces and Interfaces
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2024
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IF 5.7
Yufeng Gan,Yuxiang Yang,Shunyan Ning,Yimin Liu,Yuezhou Wei,Xinpeng Wang,Deqian Zeng
Developing heterojunction photocatalysts is a critical method to augment the photocatalytic activity of single semiconductors. However, the instability of their heterostructure poses a significant challenge. Herein, a unique 0D/2D Mn 3 O 4 /CdS p-n photocatalyst has been prepared by a simple one-pot in-situ hydrothermal approach for H 2 production and methylene blue (MB) degradation. The optimized MC-0.18 (18 at% Mn) nanocomposite showed remarkable photocatalytic properties, producing a significantly higher H 2 generation rate of 1291 μmol· g −1 · h −1 , which was 13.7 and 9.2 times higher than that of pristine CdS and ex-situ synthesized MC-0.18-ex photocatalysts, respectively. MC-0.18 displayed the highest reaction rate at 0.0435 min −1 for MB degradation, which was approximately 2.6 and 6.3 times higher than CdS and Mn 3 O 4 , respectively. Active species capture experiments and ESR identified •OH and •O 2 − as the main substances involved in MB degradation. Importantly, MC-0.18 demonstrated excellent stability and reusability in photocatalytic H 2 production and MB degradation cycle tests. The formation of unique p-n heterostructures results in enhanced photoactivity due to the matched band alignment between ultrafine Mn 3 O 4 nanoparticles and CdS nanosheets , leading to a high charge separation capacity. This study offers a facile route to design p-n heterojunctions that have remarkable charge transfer abilities to promote H 2 production and degrade organic dyes.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Lizhe Ma,Zhihong Zhang,Jieli Duan,Jin Li,Qingyuan Lin,Yinlong Jiang,Kefu Zhu,Zhiyong Fang,Bang Ji,Zhou Yang
Catalyst performance is traditionally evaluated under high light intensity, where variations in e - -h + pair recombination rates at different light intensities may limit the applicability of the selected catalyst to diverse light sources. Response surface methodology (RSM) was employed to compare catalyst performance under two optimization processes, using tetracycline degradation rate and photon flux as response variables. The m-TiO 2 @CdS catalyst was characterized by XRD, SEM, TEM, XPS, and UV-Vis-DRS, and its preparation process was optimized using RSM, with precursor ratio, hydrothermal time, and temperature as variables. The proposed optimization model for tetracycline degradation rate and photon flux exhibited a strong correlation between predicted and experimental results. The tetracycline degradation rates for the two optimized preparation processes were nearly identical, at 61.87 % and 61.18 %, respectively. A comparison of tetracycline degradation kinetics under different light conditions (light saturation and non-saturation) for the two optimized m-TiO 2 @CdS samples demonstrated that the photon flux-based optimization model offered greater adaptability across a wider range of light intensities. Additionally, the repeatability of m-TiO 2 @CdS prepared under the optimal conditions was assessed, and a plausible mechanism for its photocatalytic degradation of tetracycline was proposed.
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APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Guangdong Wu,Juanqin Xue,Dashi Lei,Yanyan Zhou,Zhaoyuan Cao,Kang Ren,Qiang Bi,Zhihua Leng
Currently, upconversion nanoparticles (UCNPs) based photocatalysts have been extensively developed to improve solar energy utilization. However, the mechanisms underlying interfacial energy migration of upconversion photocatalyst remain unclear. Herein, a promising composite photocatalyst with complementary properties is designed by integrating β -NaGdF 4 :Yb 3+ /Er 3+ (NGFYE), CdS and multi-walled carbon nanotubes (MWCNTs). The morphology, structure and chemical properties of NGFYE@CdS/MWCNTs ternary photocatalyst are characterized. In addition, the existence of Förster resonance energy transfer process in NGFYE@CdS/MWCNTs photocatalysts, i.e., the migration of excitation energy from Er 3+ − 4 S 3/2 excitation level and higher excitation level (e.g., Er 3+ − 2 H 11/2 ) to CdS nanoparticles, was further confirmed by density functional theory (DFT) calculations. The optimized NGFYE@CdS/MWCNTs photocatalyst presents 71.65 % and 35.29 % degradation of tetracycline hydrochloride (TCH) and ciprofloxacin (CIP) under λ ≥ 800 nm irradiation for 3 h, respectively. This work not only illustrates the interfacial energy migration mechanism between NGFYE and CdS, but also provides insights for the rapid construction of heterojunction materials with efficient energy transfer interfaces.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Fengli Xu,Ruoyu Dong,Junchao Cui,Yufei Zhang,Weijie Ren,Kai Song,Shuai Meng,Rui Zhang,Kun Li,Jingjing Bai,Zhenxing Qin
Regulation of the fluorescence through crystalizing from the matrix in the Carbon dots (CDs)-based solid-state materials has been verified to be one of the effective methods, yet there are not only challenges in preparing such materials efficiently, but also insufficient insight into their regulation mechanisms. Here, a one-pot solvothermal route to synthesize a series of CDs-based composites with crystalline matrix is reported. These crystals exhibited multicolor fluorescence with the feature of multi-peaks emissions with increasing temperatures from 140 ℃ to 220 ℃, in which the orange emitting O-CDs@PA and the yellow emitting Y-CDs@PA crystals obtained the FLQYs of 22% and 68% respectively due to relatively stable crystalline structures. After comparative analysis to both crystals in detail, the core and the groups associated with them on the interface between CDs and matrix were adjusted in size and species during structural transformation of the crystal matrix, which changes radically the energy band structures to influence fluorescent emitting of both crystals ultimately. In addition, the reasons resulting in higher FLQY for Y-CDs@PA were provided leveraging the schematic illustration presumed based on the PL properties of both crystals. Because of the optimal optical performances, these fluorescent materials promised to fabricate WLED devices and obtained a number of photometric parameters endowed these WLED devices with the feature of warm-white light.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Hu Li,Hongbin Lin,Xiaohui Liao,Weiqin Huang,Jinrui Cai,Limei Lin,Dong Wei,Zhiping Huang,Zhigao Huang,Shuiyuan Chen,Wei Zhang,Guilin Chen
Cadmium sulfide (CdS) persists as the standard electron transport layer (ETL) in high-efficiency Sb 2 (S,Se) 3 solar cells. However, its narrow bandgap imposes critical performance limitations through parasitic short-wavelength absorption and interface mismatch. Here, this bottleneck is shattered through an innovative in situ ozone doping strategy. This approach revolutionizes CdS ETLs by simultaneously: 1) Widening the bandgap of CdS ETL to drastically suppress parasitic short-wavelength photon loss; 2) Triggering a hexagonal-to-cubic phase transition that disrupts coherent Sb 2 O 3 impurity growth during Sb 2 (S,Se) 3 deposition; and 3) Engineering an oxygen-rich, defect-resistant FTO/CdS interface (DFT-validated), thereby slashing recombination and enabling superior carrier extraction. As a result, a certified world-record power conversion efficiency of 9.0% for carbon-based Sb 2 (S,Se) 3 solar cell is achieved ( V OC of 0.4908 V, J SC of 26.88 mA cm −2 , and FF of 68.19%) using an FTO/CdS:O/Sb 2 (S,Se) 3 /PbS/carbon configuration. This work, beyond setting a new benchmark for carbon-based Sb 2 (S,Se) 3 solar cells, shows that these devices demonstrate exceptional intrinsic stability under long-term and extreme damp-heat conditions without encapsulation, thus propelling Sb 2 (S,Se) 3 technology toward commercial viability.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Zhe Wang,Zixiao Wang,Jiamin Wang,Yu He,Junping Wang
A novel chiral electrochemical sensor was fabricated via the assembly of chiral nitrogen-doped carbon dots (N-CDs) with cobalt-based nanomaterials (Co@CoO) for the rapid discrimination and quantification of tyrosine enantiomers (L/D-Tyr). The sensor has a wide linear range of 1–120 µM and low detection limits of 0.64 µM for L-Tyr and 0.3 µM for D-Tyr. The synergistic interactions between N-CDs and Co@CoO amplify stereoselective recognition, yielding a chiral current ratio (ΔI = I L /I D ) of 1.65, which outperforms those of previously reported sensors. The chiral recognition mechanism was elucidated using cyclic voltammetry, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, circular dichroism spectroscopy, Zeta potential analysis, and molecular dynamics simulations. The sensor demonstrates exceptional selectivity, stability, reproducibility, and reusability performance, and was successfully applied to the detection of L/D-Tyr in skim milk and yogurt. Notably, this sensor is the first to identify abnormally elevated D-Tyr levels in expired food products, suggesting a potential correlation between amino acid racemization and food quality deterioration. This study establishes a robust platform for chiral recognition in complex food matrices.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
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IF 3.232
Qiulan Li,Dezhi Yang,Yaling Yang
The study presents a spectrofluorimetric method for the determination of Cr(III) based on 2,3-diaminophenazine (DAP) as fluorescent nano sensor. With the peroxidase-mimicking activity of copper-doped carbon dots (Cu-CDs), colorless o -phenylenediamine (OPD) was oxidized to fluorescent DAP in the presence of H 2 O 2 via generation of hydroxyl radicals . The Cr(III) was found to decrease the fluorescent intensity of the Cu-CDs-mediated OPD oxidation system. Cr(VI) species were reduced to Cr(III) by employing 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonate) (ABTS) as the reductant, and a novel spectrofluorimetric method for the highly sensitive detection of speciation Cr(VI) and Cr(III) was developed. The Cu-CDs nanozyme was prepared from ethylenediaminetetraacetic acid copper disodium salt (Na 2 [Cu (EDTA)]) by one-step pyrolysis method. Under optimal conditions, the fluorescence intensity of DAP is linearly proportional to the Cr(III) ion concentration in the range of 5 × 10 −6 to 1.5 × 10 −4 mol L −1 and the detection limit is 1.2 × 10 −7 mol L −1 . The method has a good anti-interference performance against some metal ions , such as, Hg 2+ , Co 2+ , Cu 2+ , Mg 2+ , Ba 2+ , K + , Mn 2+ , Ni 2+ , Al 3+ , and Fe 3+ . The proposed method was successfully applied in the determination of Cr(VI) and Cr(III) in water samples.
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DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Senyang Wang,Shi Tang,Mengting Hua,Yuxuan Chen,Dantian Zhang,Rao Fan,Ling Li
Raspberry-like double-core shell CdS@ZnS@NiS material was prepared to use a simple one-step hydrothermal method, and then coated uniformly on carbon nanofibers (CNFs), resulting in the formation of highly efficient counter electrode (CE) for Zn-Cu-In-Se (ZCISe) quantum dot sensitized solar cells (QDSSCs). The QDSSCs used CdS@ZnS@NiS/CNFs as CE reached power conversion efficiency (PCE) of 9.72 %, which is higher than Cu 2 S/brass (8.42 %). This result indicates the dual-core shell structure possesses better catalytic properties, which indicates that the raspberry-shaped double-core shell CdS@ZnS@NiS is a feasible competitor as CE material for QDSSCs.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Bo Wang,Sha He,Wenhui Feng,Lulu Zhang,Xueyan Huang,Kaiqiang Wang,Shiying Zhang,Ping Liu
Non-noble metal Cd nanoparticles, as an efficient cocatalyst, are successfully constructed onto the surface of hexagonal CdS nanorods (CdS NRs) for the photocatalytic hydrogen evolution reaction by a facile in situ chemical reduction approach based on a thermal treatment process. The in situ introduction of Cd can significantly improve the photocatalytic H 2 production performance of CdS NRs in sodium sulfide and sodium sulfite aqueous solutions under visible light irradiation. The superior electrical conductivity of metallic Cd and the intimate interfacial contact between Cd and CdS NRs are suggested to account for the enhanced light absorption intensity, more efficient charge separation, and faster interfacial charge migration, resulting in the dramatically promoted photocatalytic H 2 production activity. This work provides a new route for the in situ deposition of Cd nanoparticles onto CdS and other Cd-containing semiconductor photocatalysts with desired morphologies.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2016
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IF 2.822
Longhua Ding,Chao Ma,Li Li,Lina Zhang,Jinghua Yu
A facile photoelectrochemical sensor for the determination of hydrogen sulfide (H 2 S) is developed. Photocurrent is generated through the grafting of CdS nanoparticles covalently and in situ onto TiO 2 nanotubes . The surface of TiO 2 nanotubes was modified by a layer of thioglycolic acid (TGA) to introduce thiol groups which can adsorb and immobilize Cd ions . CdS nanoparticles would be formed onto TiO 2 nanotubes after treating with exogenous or endogenous H 2 S. Both the exogenous and H 2 S released from cancer cells were detected based on the photoelectric properties of CdS nanoparticles. And a wide linear range (10 nM–10 6 nM) was achieved with a detection limit of 0.7 nM.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Senyang Wang,Shi Tang,Mengting Hua,Yuxuan Chen,Dantian Zhang,Rao Fan,Ling Li
Raspberry-like double-core shell CdS@ZnS@NiS material was prepared to use a simple one-step hydrothermal method, and then coated uniformly on carbon nanofibers (CNFs), resulting in the formation of highly efficient counter electrode (CE) for Zn-Cu-In-Se (ZCISe) quantum dot sensitized solar cells (QDSSCs). The QDSSCs used CdS@ZnS@NiS/CNFs as CE reached power conversion efficiency (PCE) of 9.72%, which is higher than Cu 2 S/brass (8.42%). This result indicates the dual-core shell structure possesses better catalytic properties, which indicates that the raspberry-shaped double-core shell CdS@ZnS@NiS is a feasible competitor as CE material for QDSSCs.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Ermiao Liang,Wenbo Cui,Ke Cheng,Mingcong Xu,Sha Luo,Chunhui Ma,Zhijun Chen,Yahui Zhang,Shouxin Liu,Wei Li
Here, CdS/ZnS/Pt (CZP), Zn 0.4 Cd 0.6 S/ZnS/Pt (ZCSZP), and CdS/ZnS/1T-WS 2 /CNTs (CZWC) composites are constructed through co-catalyst modification and heterojunction engineering strategies. The CZWC-10 with an innovative structure exhibits the optimal photocatalytic hydrogen production performance (37.83 mmol/g/h) for lactic acid, while the CZP photoreforming of cellulose achieves yields of 13.22 and 5.27 mmol/g/h for hydrogen and formic acid, respectively. 1T-WS 2 /CNTs not only exposes more active sites but also expands the photoresponse range. The synergistic effect of the built-in electric field within the heterojunction of ZnS/CdS and the co-catalysts (1T-WS 2 /CNTs and Pt) enables the spatial separation and directed aggregation of photogenerated charge carriers, thereby simultaneously triggering redox half-reactions. The formation of heterojunctions reduces the Δ G H∗ value at the S site in 1T-WS 2 and is smaller than the absolute value of Δ G H∗ at the Pt site in CZP, thereby promoting hydrogen formation. This study provides insights for rationally designing photocatalysts to achieve highly efficient photoreforming reactions.
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