JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Zhi-Rong Li,Jing Liu,Jing-Yi Sun,Zhi-Yi Hu,Wan-Ying Li,Ting-Ting Shen,Mei-Tong Wei,Zhi-Wen Yin,Si-Ming Wu,Gustaaf Van Tendeloo,Yu Li,Bao-Lian Su
The Ni/Al layered double oxide (Ni/Al-LDO) is a promising photocatalyst because of the high surface area and abundant active sites. However, the application of Ni/Al-LDO for photocatalytic hydrogen evolution is hindered by the unclarity of the optimized microstructure and limited light absorption. In this work we report the structural evolution from Ni/Al layered double hydroxides (Ni/Al-LDH) to Ni/Al-LDO, which is able to achieve a precise regulation of the layered structure with abundant acid sites for photocatalysis. Further, CdS quantum dots (QDs) are in-situ grown on the sheet-like Ni/Al-LDO to obtain a close contact 0D/2D CdS-Ni/Al-LDO heterojunction. CdS-Ni/Al-LDO exhibits a hydrogen evolution efficiency of 20.3 mmol/g/h and an apparent quantum yield (AQY) of 22.2 % at a wavelength of 450 nm. The superior performance is attributed to the synergistic effects of abundant Lewis and Brønsted acid sites of Ni/Al-LDO, the layered structure with a high specific surface area and the heterojunction between Ni/Al-LDO and the CdS QDs.
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高影响因子
APPLIED CLAY SCIENCE
·
2025
·
IF 5.8
Yan Zhang,Xinhui Huang,Yaxue Zhang,Letian Lv,Chengyuan Su,Shu Gao,Zhi Huang,Menglin Chen,Xianfeng Lin
We prepare CdS-CeO 2 /sepiolite materials in a one-step process and characterize their structural, morphological, and optical properties. CdS-CeO 2 /sepiolite displays enhanced adsorption of the environmentally hazardous dye Rhodamine B (RhB), up to 34.92 mg/g. Harnessing synergy between adsorption and photocatalysis, CdS-CeO 2 /sepiolite removes 98.57 % of RhB from solution after 150 min of visible light illumination and is robust to a wide pH range. Quenching experiments and electron spin resonance (ESR) indicates that singlet oxygen and holes are the main reactive groups during photocatalytic degradation. CdS and CeO 2 hinder the recombination of photogenerated electron-hole pairs, accelerate charge transfer, and enhance visible light absorption. These CdS-CeO 2 /sepiolite materials have potential application in the efficient photodegradation of dye in a wide range of pH.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
·
IF 7.139
Shuang Liang,Guozhe Sui,Jinlong Li,Dongxuan Guo,Ze Luo,Rongping Xu,Hong Yao,Chao Wang,Shijie Chen
This study presents a novel approach for synthesizing C–ZnO/CdS graded nanorods derived from metal–organic frameworks (MOFs) that can be applied as a catalyst for photocatalytic hydrogen evolution from pure water. Porous C-doped ZnO was prepared by a self-template method using imidazole-like metal–organic backbone (ZIF-L) as a precursor through a two-step calcination method. CdS nanoparticles were deposited on ZIF-L surface by chemical deposition . The two-step calcination method introduced elemental C, and the unique architecture of ZIF-L played an essential role in forming the hierarchical structure of the porous ZnO nanorods. Compared with other ZnO/CdS catalysts, the C-doped ZnO/CdS graded nanorods exhibited remarkable photocatalytic activity for hydrogen production . The highest hydrogen production rate of 20.25 mmol g −1 h −1 with an apparent quantum yield (AQY) of 24.7% at 365 nm obtained over C–ZnO/CdS with Pt as co-catalyst, which was 24.4 and 65.3 times higher than that over CdS (0.83 mmol g −1 h −1 ) and ZnO (0.31 mmol g −1 h −1 ), respectively. This outcome was attributed to (i) the formation of Z-scheme heterojunction that significantly promoted the separation and migration of photogenerated electron–hole pairs; (ii) C doping that reduced the bandgap of ZnO and broadened its spectral response range; and (iii) the ordered arrangement of porous nanorods that effectively reduced the recombination rate of the electron–hole pairs.
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CHINESE JOURNAL OF CATALYSIS
·
2020
·
IF 6.146
Jinjun Peng,Jun Shen,Xiaohui Yu,Hua Tang,Zulfiqar,Qinqin Liu
Plasmonic nonmetal semiconductors with localized surface plasmon resonance (LSPR) effects possess extended light-response ranges and can act as highly efficient H 2 generation photocatalysts. Herein, an LSPR-enhanced 0D/2D CdS/MoO 3− x heterojunction has been synthesized by the growth of 0D CdS nanoparticles on 2D plasmonic MoO 3− x elliptical nanosheets via a simple coprecipitation method. Taking advantage of the LSPR effect of the MoO 3− x elliptical nanosheets, the light absorption of the CdS/MoO 3− x heterojunction was extended from 600 nm to the near-infrared region (1400 nm). Furthermore, the introduction of 2D plasmonic MoO 3− x elliptical nanosheets not only provided a platform for the growth of CdS nanoparticles, but also contributed to the construction of an LSPR-enhanced S-scheme structure due to the interface between the MoO 3− x and CdS, accelerating the separation of light-induced electrons and holes. Therefore, the CdS/MoO 3− x heterojunction exhibited higher photocatalytic H 2 generation activity than pristine CdS under visible light irradiation, including under 420, 450, 550, and 650 nm monochromic light, as well as improved photo-corrosion performance.
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BIOSENSORS & BIOELECTRONICS
·
2013
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IF 5.437
Bing Sun,Lijian Chen,Yan Xu,Min Liu,Huanshun Yin,Shiyun Ai
A novel ultrasensitive photoelectrochemical immunosensor was fabricated based on 3-mercaptopropionic acid stabilized CdS/reduced graphene oxide (MPA-CdS/RGO) nanocomposites for indole-3-acetic acid (IAA) detection. The MPA-CdS/RGO nanocomposites were synthesized by in situ solvothermal growth of triangulated pyramidal CdS nanoparticles on the RGO sheet. 3-Mercaptopropionic acid (MPA) was employed as the modifier and bridge to immobilize the antibody. The nanocomposites were characterized by X-ray diffraction, transmission electron microscopy , scanning electron microscopy and UV/vis spectra. The results showed that the MPA-CdS/RGO nanocomposites revealed enhanced photocurrent response due to excellent electron transport properties of RGO and the improved assembly of CdS nanoparticles onto RGO sheet with the introduction of MPA. Based on the dependence of the photocurrent decline on the concentration of IAA, the proposed photoelectrochemical immunosensor for IAA depicted a linear range from 0.1 to 1000 ng/mL with a lower detection limit (0.05 ng/mL). The high sensitivity, reproducibility and specificity of the method permitted the method suitable to be used in real samples.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Yiying Yue,Shuting Shen,Wanli Cheng,Guangping Han,Qinglin Wu,Jianchun Jiang
A novel photocatalytic hydrogel was prepared by the direct coagulation casting of CdS/MoS 2 /Montmorillonite (CMMt) and TEMPO-oxidized cellulose nanofiber (TOCN)-mediated polyacrylamide (PAM). The extremely high specific surface area of CdS/MoS 2 /Mt and the three-dimensional network-structured PAM-TOCN matrix contributed to the adsorption of tetracycline (TC) in wastewater treatment . The effect of the initial pH on the degradation of TC by PAM-TOCN-CMMt was analyzed, and its degradation rate reached 90.03% in 120 min at pH 7.5. In addition to being a visible-light-driven catalyst, CdS/MoS 2 /Mt acts as a reinforcing agent, and the tensile stress of PAM-TOCN-CMMt increased by 41% compared with that of PAM-TOCN. The compressive strength of TOCN-PAM-CMMt at an 80% strain level was 65% higher than that of PAM-TOCN. Thus, PAM-TOCN-CMMt, with high mechanical strength , offers multiple separations and recycling, and the TC removal rate is still more than 70.5% after five cycles. Moreover, the mechanism of TC degradation was proposed based on the photoelectric performance. The strong interaction between the CdS/MoS 2 heterojunction and the electronegative Mt is conducive to the effective separation and transportation of photogenerated electrons. The prepared nanocomposite hydrogels with a desirable catalytic degradation rate, mechanical strength, environmental friendliness , and recyclability are promising for the photodegradation of antibiotics.
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Nanoscale
·
2014
·Vol. 6
·期 19
·11147-11156
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IF 6.739
Guoxing Zhu,Chunlin Bao,Yuanjun Liu,Xiaoping Shen,Chunyan Xi,Zheng Xu,Zhenyuan Ji
Developing hybrid nanocrystals is a hot topic in materials science. Herein, a ternary hybrid nanocrystal, Ag–Ag2S–CdS, combining near infrared emission and photothermal conversion properties was demonstrated. The ternary Ag–Ag2S–CdS hybrid nanocrystals with cubic shape and uniform size were synthesized by a simple one-pot and one-step colloidal method. The growth process is self-regulated with the formation order of Ag2S, Ag, and CdS, sequentially. The formation of Ag originates from the partial reduction of Ag2S, while the formation of CdS is through an Ag2S catalytic mechanism based on its superionic feature. The obtained ternary hybrid nanocrystals show near infrared emission and photothermal conversion properties in a lab-on-a-particle system. Importantly, an enhanced effect is observed for the photothermal conversion, which is mainly due to the presence of heterointerfaces among the crystals. This work will not only advance the synthesis chemistry of multi-component hybrid nanocrystals but also provide a possible route for the design of advanced multi-model materials used in bio-related fields.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Guoli Xu,Meiling Du,Tao Li,Yueping Guan,Chen Guo
Nowadays, designing photocatalysts with high activity and recyclability for the degradation of pollutants is still a challenging problem. In this paper, a novel Fe 3 O 4 /BiVO 4 /CdS (FBC) heterojunction photocatalyst was firstly fabricated by simultaneously decorating CdS on the surface of pristine Fe 3 O 4 and BiVO 4 in a low-temperature water bath system. The FBC photocatalyst can enhance the absorption range of visible light and facilitate the separation and transfer of charges. Simultaneously, it can also provide large specific surface area and excellent magnetic response. FBC-3 displayed the highest degradation rate of tetracycline (87.37%) under visible light irradiation. Moreover, the important parameters affecting the photocatalytic activity were investigated to simulate the degradation of TC in real aqueous system. More importantly, the synthesized magnetic photocatalyst exhibited good universal applicability, stability and reusability. The Z-scheme transfer pathway for improving photocatalytic performance was also proposed based on the results of radical trapping experiments, electron spin resonance (ESR) measurement, optical and photoelectrochemical analysis.
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高影响因子
TALANTA
·
2020
·
IF 5.339
Bowen Gao,Zhishan Liang,Dongxue Han,Fangjie Han,Wencai Fu,Wei Wang,Zhenbang Liu,Li Niu
A novel molecularly imprinted photo-electrochemical sensor based on CdS/TiO 2 nanocomposites was constructed for precisely detection of hemoglobin under visible light irradiation . CdS quantum dots were decorated on the surface of TiO 2 nanorod arrays to form a heterojunction, which could enhance the charge-transfer efficiency for visible light and further increase the photo-generated current of the sensor. The molecularly imprinted polymer film assembled by dopamine monomer had achieved excellent performance for specifically binding with human hemoglobin. The hemoglobin bound on the sensor could catalyze the oxidation reaction of 4-chloro-1-naphthol by H 2 O 2 , generating insoluble product on the sensor surface and triggering an obviously decrease on photocurrent . The molecularly imprinted photo-electrochemical sensor exhibited excellent sensitivity, selectivity and stability for the detection of human hemoglobin. The sensor had a linear range from 0.01 to 100 ng mL −1 with a detection limit of 0.53 pg/mL (S/N = 3). Furthermore, the sensor was successfully applied on the analysis of human hemoglobin in the urine samples.
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高影响因子
CATALYSIS LETTERS
·
2018
·Vol. 148
·期 9
·2765-2776
·
IF 2.911
Chang Libin,Zhu Gangqiang,Lu Huan,Hojamberdiev Mirabbos,Zhang Zengping,Gao Jianzhi,Wang Chenghui,Yang Woochul
Abstract The Ag 2 S/CdS composite photocatalyst with a leaf-like structure was synthesized by loading the Ag 2 S nanoparticles on the surface of the hydrothermally synthesized CdS particles. The UV–Vis–NIR absorption spectroscopy results reveal that the Ag 2 S/CdS composite photocatalyst exhibits a wide-spectrum response from ultraviolet (UV) to near-infrared (NIR), demonstrating its potential for effective utilization of solar energy. The scanning and transmission electron microscopic observations show that Ag 2 S nanoparticles with the size of about 20 nm are successfully embedded on the surface of leaf-like structure of CdS. Among the samples loaded with different molar percentages of Ag 2 S nanoparticles, the 5%-Ag 2 S/CdS composite photocatalyst exhibits a higher photocatalytic efficiency than the individually synthesized CdS and Ag 2 S for the degradation of Rhodamine B (RhB) and methyl orange (MO) under LED visible light irradiation. Furthermore, the 5%-Ag 2 S/CdS composite photocatalyst also exhibits a photocatalytic activity for the degradation of RhB under 850 and 940 nm monochromatic light irradiation. The results of the photocatalytic activity tests performed with various scavengers confirm that ·O 2 − plays a key role in the photodegradation of RhB. An enhanced photocatalytic performance of the Ag 2 S/CdS composite photocatalyst is directly attributed to the formation of a heterojunction between Ag 2 S and CdS. The developed composite photocatalyst can harness a greater share of the solar spectrum from visible to near infrared region and generate the photoinduced charge carriers more efficiently. Graphical Abstract
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Polymer Chemistry
·
2014
·Vol. 5
·期 24
·7034-7041
·
IF 5.368
Chengsha Wei,Mingming Chen,Jiaojiao Tao,Xibo Wu,Majid Khan,Dong Liu,Ningdong Huang,Liangbin Li
In this paper, we described a new and simple method to produce degradable core cross-linking (CCL) micellar clusters that utilized CdS nanorods to assist thermal oxidation of the polythiol segment of a diblock copolymer, polystyrene-b-polythiol (PS-b-polythiol), at high concentration (2.3 wt%) in a common organic solvent (toluene). The CdS nanorods acted not only as catalysts, but also as templates. The diblock copolymer, PS-b-polythiol, was obtained by aminolysis of polystyrene-b-poly(2-(ethyl-xanthate)ethylmethacrylate) (PS-b-P1), a block copolymer synthesized via reversible addition–fragmentation chain transfer (RAFT) polymerization using a macroRAFT transfer agent, PS-CTA, and a methacrylate monomer that possessed a protected thiol group, in the presence of n-butylamine and tributyl phosphine. The CdS nanorods were synthesized conveniently by thermolysis of an alkyl xanthate, Cd-HDX. The TEM image clearly showed the formation of micellar clusters and the oxidation procedure was investigated by 1H-NMR and XPS. The formation of core cross-linking (CCL) micelles was confirmed to be reversible by reduction utilizing DTT as the reducing agent.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Xuli Li,Yangqin Gao,Ning Li,Lei Ge
Designing an efficient heterojunction interface is an effective way to promote the electrons' transfer and improve the photocatalytic H 2 evolution performance. In this work, a novel hollow hybrid system of Co@NC/CdS has been fabricated and constructed. CdS nanospheres are anchored on the hollow-structured cobalt incorporated nitrogen-doped carbon (Co@NC) through a one-pot in-situ chemical deposition approach, forming an intimate interface and establishing an excellent channel to improve the electrons transfer and charge carriers separation between CdS and Co@NC cocatalyst , which immensely promotes the photocatalytic activity . The rate of photocatalytic H 2 evolution over hollow structured Co@NC/CdS heterojunction can be achieved 8.2 mmol g −1 h −1 , which is about 45 times of pristine CdS nanospheres . The photocatalytic H 2 evolution mechanism has been investigated by the techniques of photoluminescence (PL) spectra, photocurrent-time (i-t) curves, electrochemical impedance spectroscopy (EIS) etc. This work aims to provide a new way in developing of high-performance advanced 3D heterojunction for photocatalytic hydrogen evolution .
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