Stepwise synthesis of cuprous oxide nanoparticles with adjustable structures and growth model

Yang, Ailing; Wang, Yujin; Li, Shun-pin; Bao, Xichang; Yang, Renqiang

doi:10.1007/s11431-014-5658-2

Cited by 9 publications

(5 citation statements)

References 35 publications

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“…The TEM result of Cu 2 O (Figure A) exhibits a spherical hollow-centered structure (or nanoshells) with a diameter in the range of 170–210 nm, and the shell thickness of the NSs is about 45–50 nm. The spherical shells are not so compact, and there are some pores in the shells, which is similar to the published results. ,, The TEM image of the prepared CuS NSs (Figure B) also displays nanoshells with size near 200 nm, and the rough shells are composed of many small nanocrystals. There are small voids in the shells, similar to the reported morphology of CuS NSs. − The HRTEM image of CuS NSs (Figure C) shows the interplanar spacings of 0.171 and 0.331 nm, corresponding to the (108) plane and (100) plane of CuS, respectively. , The above results show that when Cu 2 O NSs were transformed into CuS NSs, the hollow-centered structure remained; however, the surfaces of the CuS NSs are rougher than those of the Cu 2 O NSs.…”

Section: Resultssupporting

confidence: 88%

“…The growth strategy of the CuS NSs is shown in Scheme B. CuS NSs were prepared using Cu 2 O NSs as templates, which were fabricated according to our previous method. , CuS NSs were obtained by the reaction between Cu 2 O NSs and Na 2 S at 60 °C for 15 min. The concentrations of the Cu 2 O NSs and Na 2 S are 1.4 × 10 –4 (w/w) and 2.4 × 10 –4 (w/w), respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The spherical shells are not so compact, and there are some pores in the shells, which is similar to the published results. 38,46,47 The TEM image of the prepared CuS NSs (Figure 3B) also displays nanoshells with size near 200 nm, and the rough shells are composed of many small nanocrystals. There are small voids in the shells, similar to the reported morphology of CuS NSs.…”

Section: Synthesis Of Cus Nssmentioning

confidence: 98%

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Photoheating Effects of CuS@PEI_GQDs Nanoshells under Near-Infrared Laser and Sunlight Irradiation

Zhang

Yang

2023

Crystal Growth & Design

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CuS nanoparticles (CuS NPs) have excellent photothermal conversion effects due to their strong and wide-band light absorption. The composite of CuS NPs may enhance the light absorption and photoheating effect, and their broad applications have appealed to wide interests. In this paper, ethylene imine polymer (PEI)-linked graphene quantum dots (PEI_GQDs) were easily obtained by an ultrasonic-assisted hydrothermal approach, and CuS nanoshells (NSs) were prepared with Cu 2 O NSs as a template. The composite of CuS@PEI_GQDs NSs was easily obtained by selfassembly due to the electrostatic attraction between PEI_GQDs and CuS NSs. The morphology, structure, surface chemistry, and optical absorption of the prepared nanomaterials were characterized by multimicroscopic techniques. The results of high-resolution transmission electron microscope (HRTEM), X-ray diffractometer (XRD), Fourier transform infrared (FTIR), X-ray photoelectronic spectroscopy (XPS), and energy-dispersive spectrum (EDS) show that the PEI_GQDs were successfully linked on the surfaces of the CuS NSs; the FTIR analysis reveals that there is an interaction between CuS NSs and PEI_GQDs by chelation between Cu 2+ and −NH 2 in PEI_GQDs. The pore size distribution indicated that both the CuS NSs and CuS@PEI_GQDs NSs contained mesopores in the wall shells. The CuS@PEI_GQDs NSs displayed enhanced absorption within 190−500 and 630−1100 nm compared to the CuS NSs. The photoheating effects of CuS@PEI_GQDs NSs and CuS NSs were investigated under 808 nm laser and sunlight irradiation, and CuS@PEI_GQDs NSs presented a better photoheating effect and photothermal stability than CuS NSs. Our results provide a facile approach to fabricate other GQD-coated nanomaterials. The excellent photoheating effects of CuS@ PEI_GQDs NSs are promising in photothermal conversion.

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Section: Resultssupporting

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Cus Nssmentioning

confidence: 98%

See 1 more Smart Citation

Photoheating Effects of CuS@PEI_GQDs Nanoshells under Near-Infrared Laser and Sunlight Irradiation

Zhang

Yang

2023

Crystal Growth & Design

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“…The Cu foam-supported Cu 2 O electrode can meet the glucose detection for human serum over a wide concentration range (1 μM to 11.4 mM). Our group fabricated hollow Cu 2 O–PVP NPs by stepwise controlling the addition of the reducer [49] and constructed a non-enzymatic glucose sensor based on the hollow Cu 2 O nanosphere in Nafion matrix on a glassy carbon electrode (GCE) [50]. Results showed that the hollow Cu 2 O nanospheres have a remarkable electrocatalytic activity for the oxidation of glucose without loading any enzymes.…”

Section: Introductionmentioning

confidence: 99%

Facile Non-Enzymatic Electrochemical Sensing for Glucose Based on Cu2O–BSA Nanoparticles Modified GCE

Dai

Yang

Bao

et al. 2019

Sensors

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Transition-metal nanomaterials are very important to non-enzymatic glucose sensing because of their excellent electrocatalytic ability, good selectivity, the fact that they are not easily interfered with by chloride ion (Cl−), and low cost. However, the linear detection range needs to be expanded. In this paper, Cu2O–bovine serum albumin (BSA) core-shell nanoparticles (NPs) were synthesized for the first time in air at room temperature by a facile and green route. The structure and morphology of Cu2O–BSA NPs were characterized. The as-prepared Cu2O–BSA NPs were used to modify the glassy carbon electrode (GCE) in a Nafion matrix. By using cyclic voltammetry (CV), the influence from scanning speed, concentration of NaOH, and load of Cu2O–BSA NPs for the modified electrodes was probed. Cu2O–BSA NPs showed direct electrocatalytic activity for the oxidation of glucose in 50 mM NaOH solution at 0.6 V. The chronoamperometry result showed this constructing sensor in the detection of glucose with a lowest detection limit of 0.4 μM, a linear detection range up to 10 mM, a high sensitivity of 1144.81 μAmM−1cm−2 and reliable anti-interference property to Cl−, uric acid (UA), ascorbic acid (AA), and acetaminophen (AP). Cu2O–BSA NPs are promising nanostructures for the fabrication of non-enzymatic glucose electrochemical sensing devices.

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“…First, the Cu 2+ ions were reduced by the hydrazine, forming the cuprous oxide (Cu 2 O) nuclei. Then, the Cu 2 O nuclei were assembled to be the solid spherical aggregates. , As shown in Figure A, the average hydrated particle size of Cu 2 O@Dex was about 174 nm. The transmission electron microscopy (TEM) spectra shown in Figure B and Figure S1 and the SEM spectra in Figure S2 exhibited that the particle was formed by nanoaggregates of Cu 2 O nuclei with the size of about 130 nm and wrapped in Dex, which was 1–5 nm in thickness.…”

Section: Resultsmentioning

confidence: 99%

Cuprous Oxide-Based Dual Catalytic Nanostructures for Tumor Vascular Normalization-Enhanced Chemodynamic Therapy

Wang

Yan

Sun

et al. 2023

ACS Appl. Nano Mater.

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The abnormal blood vessels in tumor sites, causing poor tumor perfusion and hypoxia environment, restrict the chemodynamic therapy (CDT) potency significantly. To attain the synergistic therapy of tumor vascular normalization with CDT, herein, we constructed a dual-functional nanocatalyst with a simple structure, cuprous oxide by dextran (Cu 2 O@Dex), to restore proper tumor perfusion and tumor oxygenation. The in vitro experiment outcomes illustrated that Cu 2 O@Dex hardly releases Cu (Cu +/2+ ) under neutral conditions, which avoids unnecessary catalytic reaction in blood circulation. Under the weak acidic condition (pH 6.5), Cu 2 O@Dex begins to release Cu (Cu +/2+ ), catalyzing the nitric oxide (NO) generation for vascular normalization. Also, Cu 2 O@Dex further releases a large amount of Cu (Cu +/2+ ) under more acidic intratumor cells (pH 5.5), fast catalyzing the hydroxyl radical (•OH) generation for CDT. The in vivo experiment observations verified that Cu 2 O@Dex could improve tumor perfusion significantly 3 h post injection, which lasted for more than 144 h. The effective perfusion (Hoechst 33342 + ) area in the Cu 2 O@Dex group was 3.8-fold higher than that in the phosphate buffer saline (PBS) group after 48 h of injection, confirming the effectiveness of Cu 2 O@Dex to induce vascular normalization. Noticeably, tumor vascular normalization further enhanced the therapeutic effect of CDT through delivery of H 2 O 2 generator juglone (JUG) more smoothly. The antitumor efficacy of Cu 2 O@Dex plus JUG was 86.5% with no obvious toxicity. Overall, our design achieved the dual-catalytic effects integrated in one simple nanostructure for tumor vascular normalization-enhanced CDT.

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Stepwise synthesis of cuprous oxide nanoparticles with adjustable structures and growth model

Cited by 9 publications

References 35 publications

Photoheating Effects of CuS@PEI_GQDs Nanoshells under Near-Infrared Laser and Sunlight Irradiation

Photoheating Effects of CuS@PEI_GQDs Nanoshells under Near-Infrared Laser and Sunlight Irradiation

Facile Non-Enzymatic Electrochemical Sensing for Glucose Based on Cu2O–BSA Nanoparticles Modified GCE

Cuprous Oxide-Based Dual Catalytic Nanostructures for Tumor Vascular Normalization-Enhanced Chemodynamic Therapy

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