Wen Liu, Yunyi Li, Fuyang Liu, Wei Jiang et al.
Metal-free photocatalysts have attracted growing concern in recent years. In this work, a new class of carbon quantum dots (CQDs) modified porous graphitic carbon nitride (g-C3N4) is synthesized via a facile polymerization method. With the optimal CQDs loading, the CQDs modified g-C3N4 exhibits ∼15 ...
Md. Azharul Islam, Muthanna J. Ahmed, Waheed Ahmad Khanday, Mohammad Asif et al.
Hydrothermal carbonization of biomass wastes presents a promising step in the production of cost-effective activated carbon. In the present work, mesoporous activated carbon (HAC) was prepared by the hydrothermal carbonization of rattan furniture wastes followed by NaOH activation. The textural and ...
Manik Chandra Biswas, Md Tariqul Islam, P. Nandy, Md. Milon Hossain
Quantum dots (QDs) exhibit unique physicochemical and optical properties that are suitable for photovoltaic cells, light-emitting diodes, and optoelectronic devices; however, unlike selenium and tellurium/metal-sulfide-based QDs, graphene quantum dots (GQDs) are comparatively less toxic and biocompa...
Mohammad Sarraf, Kanchan Vishwakarma, Vinod Kumar, Namira Arif et al.
In agriculture, abiotic stress is one of the critical issues impacting the crop productivity and yield. Such stress factors lead to the generation of reactive oxygen species, membrane damage, and other plant metabolic activities. To neutralize the harmful effects of abiotic stress, several strategie...
Ting Liu, Jiang Xue Dong, Shi Gang Liu, Na Li et al.
A stable silver nanoparticles/carbon quantum dots (Ag/CQDs) composite was prepared by using CQDs as reducing and stabilizing agent. The CQDs synthesized with polyethyleneimine (PEI) showed an extraordinary reducibility. When Hg 2+ was presented in the Ag/CQDs composite solution, a color change from ...
Chun Zhao, Zhenzhu Liao, Wen Liu, Fuyang Liu et al.
A novel tubular graphitic carbon nitride (g-C3N4) modified with carbon quantum dots (CQDs) was fabricated and employed for the elimination of carbamazepine (CBZ) under visible light irradiation. The as-fabricated metal-free catalysts exhibited tubular morphologies due to the preforming of tubular pr...
Md. Azharul Islam, Assia Benhouria, Mohammad Asif, B.H. Hameed
Quanhao Shen, Lingfei Wei, Rehana Bibi, Ke Wang et al.
Graphitic carbon nitride is considered as one of the promising photocatalysts for pollution elimination from wastewater. Manipulating the microstructure of carbon nitride remains a challengeable task, which is essential for improving light absorption, separating photogenerated carrier and creating r...
Muthanna J. Ahmed, Md. Azharul Islam, Mohammad Asif, B.H. Hameed
In this work, a human hair-derived high surface area porous carbon material (HHC) was prepared using potassium hydroxide activation. The morphology and textural properties of the HHC structure, along with its adsorption performance for tetracycline (TC) antibiotics, were evaluated. HHC showed a high...
Zhixing Gan, Shi‐Jie Xiong, Xinglong Wu, Tao Xu et al.
A comprehensive picture of the photoluminescence mechanism of various chemically derived graphene oxides is given. In particular, the strong blue emission at about 430 nm is correlated with carbon defect states formed during the reduction of graphene oxide and the enhanced long-wavelength tuning pho...
Lei Han, Shi Gang Liu, Jia Yu Liang, Yan Jun Ju et al.
Being a common hazardous waste, 4-nitrophenol (4-NP) has caused a serious threat to humans and environment. Therefore, rapid and selective detection of 4-NP, especially using a simple and portable instrument, is highly desired for human health and environmental monitoring. Herein, we develop a novel...
Jiyang Fan, Hongxia Li, Jiang Jiang, Leo K.Y. So et al.
Silicon carbide nanocrystals are water-soluble, chemically inert, and highly fluorescent, and they may be idealas biological labels. After the uptake of3C–SiC nanocrystals, human fetal osteoblast (hFOB) cells exhibit brightgreen–yellow fluorescence (see image).The nanoparticles show high resistancea...
Lei Han, Shi Gang Liu, Jiang Xue Dong, Jia Yu Liang et al.
Yellow, green, and blue photoluminescent polymer carbon dots were prepared by a hydrothermal method and the multicolor photoluminescence mechanism was discussed.
M. T. H. Aunkor, Topu Raihan, Shamsul H. Prodhan, Hendrik Simon Cornelis Metselaar et al.
Graphene oxide (GO) is a derivative of graphene nanosheet which is the most promising material of the decade in biomedical research. In particular, it has been known as an antimicrobial nanomaterial with good biocompatibility. In this study, we have synthesized and characterize GO and checked its an...
Na Xiao, Shi Gang Liu, Shi Mo, Na Li et al.
p-Nitrophenol (p-NP) contaminants seriously endanger environmental and living beings health, hence to establish a sensitive and selective method is of great importance for the determination of p-NP. In this work, boron and nitrogen co-doped carbon dots (B,N-CDs) were synthesized by one-step hydrothe...