Direct growth of two-dimensional phthalocyanine-based COF on Cu-MOF to construct a photoelectrochemical-electrochemical dual-mode biosensing platform for high-efficiency determination of Cr(iii)

2021 ◽  
Author(s):  
Shuai Zhang ◽  
Kun Chen ◽  
Lei Zhu ◽  
Miaoran Xu ◽  
Yingpan Song ◽  
...  

A two-dimensional phthalocyanine-based COF (CoPc-PT-COF) was in situ grown on a Cu-MOF substrate to construct a COF@MOF heterostructure as a biosensing platform.

2020 ◽  
Vol 8 (25) ◽  
pp. 5547-5548
Author(s):  
Xiao Xiao ◽  
Shasha Zheng ◽  
Xinran Li ◽  
Guangxun Zhang ◽  
Xiaotian Guo ◽  
...  

Correction for ‘Facile synthesis of ultrathin Ni-MOF nanobelts for high-efficiency determination of glucose in human serum’ by Xiao Xiao et al., J. Mater. Chem. B, 2017, 5, 5234–5239, DOI: 10.1039/C7TB00180K.


2022 ◽  
Author(s):  
Juanjuan Ren ◽  
Lili Wang ◽  
Qianqian Gong ◽  
Jingyue Xuan ◽  
Meiling Sun ◽  
...  

A novel CdS@TiO2@C/Ti3C2 composite as high-efficiency photocatalyst for the degradation of tetracycline hydrochloride (TC-HCl) was fabricated by in situ oxidizing two-dimensional (2D) layered transition metal Ti3C2 MXene and subsequently compounding...


After a brief description of a new sand-tank laboratory and equipment for studying problems of the flow of fluids in porous materials, the remainder of the paper is devoted to an account of the application of a part of this equipment to a study of the flow of water between a pair of wells, such as is required for the determination of the permeability of the sand by the method described in part I. The potential distribution about the wells is found to conform sufficiently well with theory to justify the application of the analysis of part I, the interference due to the confining walls being satisfactorily negligible. The perturbation of the water table inseparable from the imposition of a potential difference between the wells is found not to invalidate the results based on an assumption of two-dimensional flow, while the corrections on account of the presence of a capillary fringe and a surface of seepage are satisfactorily made by adding to the measured depth of water in the well an increment equal to about half the thickness of the capillary fringe. The end correction for non-penetrating wells is also sufficiently well made by an addition to the measured depth of water; the magnitude of the correction is given for isotropic media for a well system of the dimensions used here, and the method of applying it to anisotropic media is indicated. The two-well method is used to estimate the permeability of the sand, which is then discussed in relation to the pore-size distribution. The elucidation of the permeability profile in a succession of strata is then discussed. Finally, techniques suited to work in the field are described, and a few preliminary fields results are quoted.


Geophysics ◽  
1966 ◽  
Vol 31 (5) ◽  
pp. 949-962 ◽  
Author(s):  
H. P. Ross ◽  
P. M. Lavin

Recent studies have shown that many rocks of the earth’s crust have a substantial component of remanent magnetization. Extensive sampling is required to determine adequately the remanent vector from small samples. A field technique has been developed (and tested on model data) for the in‐situ determination of the resultant (induced+remanent) magnetic vector of bulk volumes of rock, using a combined analysis of the gravity and magnetic fields of a disturbing body (Poisson’s Theorem). The potential fields are sampled adequately at a limited expenditure of time and effort in the field by utilizing the geometry of two‐dimensional bodies. The major limitation to the analysis is the removal of regional gradients and the estimation of the base levels of anomalies. Combined gravity and magnetic surveys were conducted over six diabase bodies in the Triassic Basin of Pennsylvania. The results of these surveys indicate a resultant direction of magnetization given approximately by: declination 2° W, inclination 41 degrees below the horizon. The corresponding direction of natural remanent magnetization has a declination of 1° W and an inclination of 28 degrees. The ratio of remanent to induced magnetization for the diabase is approximately two. These results have been used to provide a better interpretation of magnetic survey data over a magnetite deposit in the Triassic Basin.


Nanoscale ◽  
2020 ◽  
Vol 12 (18) ◽  
pp. 10265-10276 ◽  
Author(s):  
Shiyang Lin ◽  
Han Lin ◽  
Mai Yang ◽  
Min Ge ◽  
Yu Chen ◽  
...  

A soluble microneedle system loaded with two-dimensional MXene has been successfully fabricated, which can achieve in-situ photothermal therapy towards superficial tumor models with minimal invasion and high efficiency of drug delivery.


2011 ◽  
Vol 25 (2) ◽  
pp. 116-140 ◽  
Author(s):  
Radha Thangaraj ◽  
Millie Pant ◽  
C. Thanga Raj ◽  
Atulya K. Nagar

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