Emerging carbon-based quantum dots for sustainable photocatalysis

Wang, Jiamei; Jiang, Jizhou; Li, Fangyi; Zou, Jing; Xiang, Kun; Wang, Haitao; Li, Youji; Li, Xin

doi:10.1039/d2gc03160d

Cited by 76 publications

(27 citation statements)

References 155 publications

(291 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with Cd treatment alone, the application of CDs alleviated the life inhibition and photosynthetic inhibition of Cd stress to a certain extent. Similar research results were found in Rice (Fang, 2020) and melon (Wang et al, 2019).…”

Section: Imaging Cds In Ryegrasssupporting

confidence: 86%

“…Studies have shown that CDS can reduce the toxic effect of Cd on citrus by increasing the content of chlorophyll and anthocyanin (Li et al, 2019). The toxicity of Cd on melon seedlings was repaired by alleviating oxidative stress, reducing the inhibition of antioxidant enzyme activity and reducing the accumulation of cadmium in roots and leaves (Wang et al, 2019). All these lay a foundation for carbon quantum dots as a new phytoremediation agent.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Different concentrations of carbon quantum dots on cadmium tolerance and accumulation in ryegrass

Duan

Dong

2023

Preprint

View full text Add to dashboard Cite

Purpose Heavy metal pollution in the environment may affect plant growth. Exploring remediation agents that alleviate cadmium toxicity in plants is the research hot spots in the field of cadmium pollution remediation agent around the world. Methods The ryegrass culture variety "Dongmu 70" was used as the test material, based on Hoagland nutrient solution, the experiment set normal nutrient solution（CK）, normal nutrient solution+100 mg·L-1CDs（CDs）, 100 mol·L-1 Cd stress nutrient solution（Cd）, Cd+50 mg·L-1CDs（T1）, Cd +100 mg·L-1 CDs（T2）, Cd +150 mg·L-1 CDs（T3）. There were 6 treatments. To study the effects of CDs on the physiological characteristics of ryegrass treated for 18 days under cadmium stress. Results The results showed that cadmium stress severely inhibited the growth of ryegrass. The application of CDs could effectively alleviate the cadmium stress of ryegrass. Compared with the Cd treatment, the plant height, fresh weight, dry weight and root activity of T2 were increased by 54.89%, 117.3%, 116.67% and 58% respectively, the total chlorophyll content of T2 was increased by 68.1%, the activities of SOD, POD and CAT increased significantly, Cd accumulation in leaves and roots of T2 was decreased by 22.92% and 34.74% respectively, CDs could effectively adsorb Cd2+ and reduce its entry into ryegrass. Under the experimental conditions, the mitigation effect of CDs on Cd stress increased with the increase of CDs concentration. The repair effect of 100 mg·L-1 CDs on cadmium toxicity caused by 100 mol·L-1 Cd2+ is the best. The repair effect did not increase significantly with the increase of concentration, and even there will be inhibitory effect. Conclusion Application of CDS could promote the growth of ryegrass under cadmium stress, improve the content of photosynthetic pigment and the activity of antioxidant enzymes in ryegrass, remove excess reactive oxygen species, and inhibit the absorption of cadmium by ryegrass，effectively alleviate the cadmium stress of ryegrass. This study can provide a basis for the application of CDs as a new cadmium pollution remediation agent in soil remediation.

show abstract

Section: Imaging Cds In Ryegrasssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Different concentrations of carbon quantum dots on cadmium tolerance and accumulation in ryegrass

Duan

Dong

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…4a, ZIF-67 exhibited visible absorption around 250 and 550 nm, which were assigned to ligand-to-metal charge transfer (LMCT) and metal-to-metal (MMCT) charge transfer, respectively. In addition, the peaks at 539, 564, and 585 nm could be attributed to the 4 A 2 (F) → 4 T 1 (P) tetrahedral coordination of cobalt-energy shift in ZIF-67. 47 The strong absorption at 550 nm indicated the possibility of visible-light absorption.…”

Section: Mechanism Of Co(oh) 2 @Zif-67-enhanced Photocatalytic Oxidat...mentioning

confidence: 94%

“…Photocatalytic oxidation has attracted growing attention in water-splitting, organic synthesis, and pollutant degradation due to its easy operation, high efficiency, and minimal secondary pollution. [1][2][3][4] It is one of the most effective ways to decompose volatile organic compounds (VOCs). 5,6 To achieve effective photocatalytic oxidation, an external light source is generally required, which complicates the equipment and limits usage in small operating spaces.…”

Section: Introductionmentioning

confidence: 99%

Bandgap matching-triggered self-sustaining photocatalytic oxidation

Cheng¹,

Yuan²,

Lin³

et al. 2023

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…[14] As a new type of zero-dimensional carbon-based fluorescent nanomaterials, carbon dots (CDs) stand out among many fluorescent nanomaterials due to their excellent and unique optical properties, [15] which have a wide range of promising applications and become a hot research topic in recent years. [16] CDs possess the low cost of synthesis, [17,18] good water solubility and biocompatibility, [19] and excellent photoluminescence (PL) properties, [20] which are difficult to achieve by conventional semiconductor quantum dots. Furthermore, CDs possess many functional groups on their surface, such as amino (-NH 2 ), hydroxyl (-OH), and carboxyl groups (-COOH), which are beneficial for CDs to be utilized as fluorescent nanoprobes for detection and analysis.…”

Section: Introductionmentioning

confidence: 99%

Design of a Synthetic Strategy to Achieve Enhanced Fluorescent Carbon Dots with Sulfur and Nitrogen Codoping and Its Multifunctional Applications

Gong

et al. 2023

Small

View full text Add to dashboard Cite

Here, a rational strategy to achieve multifunctional N, S codoped carbon dots (N, S‐CDs) is reported, aiming to improve the photoluminescence quantum yields (PLQYs) of the CDs. The synthesized N, S‐CDs have excellent stability and emission properties independent of excitation wavelength. Through the introduction of S element doping, the fluorescence emission of CDs is red‐shifted from 430 to 545 nm, and the corresponding PLQYs can be greatly enhanced from 11.2% to 65.1%. It is found that the doping of S elements causes an increase in the size of CDs and an elevated graphite N content, which may be the key factors to cause the redshift of fluorescence emission. Furthermore, the introduction of S element also serves to suppress the nonradiative transitions, which may be responsible for the elevated PLQYs. Besides, the synthesized N, S‐CDs have certain solvent effect and can be applied to detect water content in organic solvents, and have strong sensitivity to alkaline environment. More importantly, the N, S‐CDs can be used to achieve an “on–off–on” dual detection mode between Zr4+ and NO2−. In addition, N, S‐CDs combinedwith polyvinylpyrrolidone (PVP) can also be utilized as fluorescent inks for anti‐counterfeiting applications.

show abstract

Emerging carbon-based quantum dots for sustainable photocatalysis

Abstract: Carbon-based quantum dots (QDs), as a new type of zero-dimensional (0D) inorganic material, have been favored by researchers, since their superior optical properties, good water solubility and biocompatibility. Besides graphene...

Cited by 76 publications

References 155 publications

Different concentrations of carbon quantum dots on cadmium tolerance and accumulation in ryegrass

Different concentrations of carbon quantum dots on cadmium tolerance and accumulation in ryegrass

Bandgap matching-triggered self-sustaining photocatalytic oxidation

Design of a Synthetic Strategy to Achieve Enhanced Fluorescent Carbon Dots with Sulfur and Nitrogen Codoping and Its Multifunctional Applications

Contact Info

Product

Resources

About