An effective Fenton reaction by using waste ferric iron and red phosphorus

Zheng, Ningchao; Lian, Yekai; Zhou, Quan; He, Xiaoming; Hu, Ruiting; Hu, Zhuofeng

doi:10.1016/j.cej.2022.135265

Cited by 24 publications

(8 citation statements)

References 55 publications

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“…However, no characteristic peak of 1 O 2 is detected (Figure S8e). Moreover, coumarin is used to capture ·OH to produce 7-hydroxycoumarin with photoluminescence signal. , Figure h and Figure S9 show that the signal intensity of 7-hydroxycoumarin increases sharply, also indicating that the P-Cu samples produce a large number of ·OH. The cumulative ·OH production in the O 2 atmosphere is also conducted.…”

Section: Resultsmentioning

confidence: 99%

“…24,25 For example, red P can greatly enhance the Fe 3+ -induced Fenton reactivity and can also effectively reduce hexavalent chromium (Cr 6+ ). 26,27 Red P can also reduce water into H 2 and CO 2 into CO and CH 4 with the aid of light. 28,29 Actually, with five external electrons, red P should be an excellent electron donor.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies pointed out that red phosphorus (P) is an inexpensive nonmetallic element with robust electron-donating properties. , For example, red P can greatly enhance the Fe 3+ -induced Fenton reactivity and can also effectively reduce hexavalent chromium (Cr 6+ ). , Red P can also reduce water into H 2 and CO 2 into CO and CH 4 with the aid of light. , Actually, with five external electrons, red P should be an excellent electron donor. Furthermore, the redox potential of H 3 PO 3 /red P (−0.454 V) is much lower than that of Cu 2+ /Cu + (0.16 V) and Cu 2+ /Cu 0 (0.337 V) (Table S2).…”

Section: Introductionmentioning

confidence: 99%

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Spontaneous Formation of Low Valence Copper on Red Phosphorus to Effectively Activate Molecular Oxygen for Advanced Oxidation Process

Zheng

Tang

et al. 2023

Environ. Sci. Technol.

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Efficient spontaneous molecular oxygen (O2) activation is an important technology in advanced oxidation processes. Its activation under ambient conditions without using solar energy or electricity is a very interesting topic. Low valence copper (LVC) exhibits theoretical ultrahigh activity toward O2. However, LVC is difficult to prepare and suffers from poor stability. Here, we first report a novel method for the fabrication of LVC material (P-Cu) via the spontaneous reaction of red phosphorus (P) and Cu2+. Red P, a material with excellent electron donating ability and can directly reduce Cu2+ in solution to LVC via forming Cu–P bonds. With the aid of the Cu–P bond, LVC maintains an electron-rich state and can rapidly activate O2 to produce ·OH. By using air, the ·OH yield reaches a high value of 423 μmol g–1 h–1, which is higher than traditional photocatalytic and Fenton-like systems. Moreover, the property of P-Cu is superior to that of classical nano-zero-valent copper. This work first reports the concept of spontaneous formation of LVC and develops a novel avenue for efficient O2 activation under ambient conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous Formation of Low Valence Copper on Red Phosphorus to Effectively Activate Molecular Oxygen for Advanced Oxidation Process

Zheng

Tang

et al. 2023

Environ. Sci. Technol.

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“…Analyses of the UV-Vis spectra of the Hb samples showed that the iron oxidation state in the blood-extracted Hb in the liquid state is ferrous, while the iron oxidation state in the lyophilized Hb (Sigma) is ferric (Figure S5) [55]. It is well-accepted that ferrous iron is more active than ferric iron in catalytic H 2 O 2 reductions [56]. The K m value of the BDNPs toward TMB is very close to the values obtained for the Hb samples.…”

Section: Kinetic Studymentioning

confidence: 99%

Synthesis of Fe-Doped Peroxidase Mimetic Nanozymes from Natural Hemoglobin for Colorimetric Biosensing and In Vitro Anticancer Effects

Mohammadpour,

Askari,

Shokati

et al. 2023

Biosensors

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: Despite their efficiency and specificity, the instability of natural enzymes in harsh conditions has inspired researchers to replace them with nanomaterials. In the present study, extracted hemoglobin from blood biowastes was hydrothermally converted to catalytically active carbon nanoparticles (BDNPs). Their application as nanozymes for the colorimetric biosensing of H2O2 and glucose and selective cancer cell-killing ability was demonstrated. Particles that were prepared at 100 °C (BDNP-100) showed the highest peroxidase mimetic activity, with Michaelis–Menten constants (Km) of 11.8 mM and 0.121 mM and maximum reaction rates (Vmax) of 8.56 × 10−8 mol L−1 s−1 and 0.538 × 10−8 mol L−1 s−1, for H2O2 and TMB, respectively. The cascade catalytic reactions, catalyzed by glucose oxidase and BDNP-100, served as the basis for the sensitive and selective colorimetric glucose determination. A linear range of 50–700 µM, a response time of 4 min, a limit of detection (3σ/N) of 40 µM, and a limit of quantification (10σ/N) of 134 µM was achieved. In addition, the reactive oxygen species (ROS)-generating ability of BDNP-100 was employed for evaluating its potential in cancer therapy. Human breast cancer cells (MCF-7), in the forms of monolayer cell cultures and 3D spheroids, were studied by MTT, apoptosis, and ROS assays. The in vitro cellular experiments showed dose-dependent cytotoxicity of BDNP-100 toward MCF-7 cells in the presence of 50 µM of exogenous H2O2. However, no obvious damage was induced to normal cells in the same experimental conditions, verifying the selective cancer cell-killing ability of BDNP-100.

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“…And the GSH consumption will be recomposed by the continual cystine uptake through system Xc − and following GSH synthesis in tumor cells [ 35 , 36 ]. It must also be mentioned that ferric ion (Fe 3+ )-based nanoparticles have low Fenton activities compared to the ferrous ion (Fe 2+ )-contained materials [ 37 ]. Therefore, designing powerful nanoplatforms that is consisted of Fe 2+ with properties of GSH oxidation, system Xc − inhibition, and cell damage repair suppression are highly needed in tumor ferrotherapy.…”

Section: Introductionmentioning

confidence: 99%

Iron (II)-based metal-organic framework nanozyme for boosting tumor ferroptosis through inhibiting DNA damage repair and system Xc-

Xue,

Zhuang,

Bai

et al. 2024

J Nanobiotechnol

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Development of ferroptosis-inducible nanoplatforms with high efficiency and specificity is highly needed and challenging in tumor ferrotherapy. Here, we demonstrate highly effective tumor ferrotherapy using iron (II)-based metal-organic framework (FessMOF) nanoparticles, assembled from disulfide bonds and ferrous ions. The as-prepared FessMOF nanoparticles exhibit peroxidase-like activity and pH/glutathione-dependent degradability, which enables tumor-responsive catalytic therapy and glutathione depletion by the thiol/disulfide exchange to suppress glutathione peroxidase 4, respectively. Upon PEGylation and Actinomycin D (ActD) loading, the resulting FessMOF/ActD-PEG nanoplatform induces marked DNA damage and lipid peroxidation. Concurrently, we found that ActD can inhibit Xc− system and elicit ferritinophagy, which further boosts the ferrotherapeutic efficacy of the FessMOF/ActD-PEG. In vivo experiments demonstrate that our fabricated nanoplatform presents excellent biocompatibility and a high tumor inhibition rate of 91.89%.

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An effective Fenton reaction by using waste ferric iron and red phosphorus

Cited by 24 publications

References 55 publications

Spontaneous Formation of Low Valence Copper on Red Phosphorus to Effectively Activate Molecular Oxygen for Advanced Oxidation Process

Spontaneous Formation of Low Valence Copper on Red Phosphorus to Effectively Activate Molecular Oxygen for Advanced Oxidation Process

Synthesis of Fe-Doped Peroxidase Mimetic Nanozymes from Natural Hemoglobin for Colorimetric Biosensing and In Vitro Anticancer Effects

Iron (II)-based metal-organic framework nanozyme for boosting tumor ferroptosis through inhibiting DNA damage repair and system Xc-

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