Synthesis of ZnO Nanorods at Very Low Temperatures Using Ultrasonically Pre-Treated Growth Solution

Round 1

Reviewer 1 Report

Following critical comments needs to be addressed.

1.       What is the sonication time.? The authors mentioned 5 seconds and 3 minutes...? What is the reason for choosing these sonication times...?

2.       The length of rods produced is quite high i.e. 5000nm...? Whereas other processes may produce less than 200nm. Authors did not explain this.

3.       Characterization part is very weak in this study. Authors could have performed XRD and Raman studies to highlight important features of grown rods. This will give better understanding about the advantage and disadvantages of the proposed processing technique of Zno nanorods

Author Response

Dear reviewer,

The correction of the paper is attached. 

Thanks so much for your comments

Author Response File: Author Response.docx

Reviewer 2 Report

Upon reviewing your manuscript intitled: Synthesis of ZnO nanorods at very low temperatures using pre-treatment growth solution with ultrasonic. I find your work interesting, but I do not believe it can be published in its current form. Therefore, some revisions must be done so that it may be published in this journal. I have the following comments and recommendations:

- The summary is very qualitative and does not show the main results of the work. Use the abstract to provide quantified information of the results obtained from the characterization techniques.

- The introduction of relevant background and research progress was not comprehensive enough.

- It is not clear why this work is important. What are the advantages over other methods? This type of structures has been reported for ZnO by other methods.

- About the experimental procedure, details about purity of raw materials, pH of solution, etc., must be provided.

- What is the adhesion level of the structures on the substrate? what are the advantages of producing nanorod over silicon?

- Details on characterization techniques must be provided. models, measurement parameters etc.

- X-ray diffraction analysis is required in this study to confirm the ZnO monophasic formation. In this sense, a strong discussion about the effect of the synthesis method and temperature on the structural parameters, (lattice constants, crystallite size, lattice strain, etc.). must be carried out.

- An important part of the work presented is based on SEM images, however, the images presented do not have the necessary quality. Authors should provide quality images. Note that most of the images show an effect, typical of samples moving under the microscope. More careful sample preparation, before taking the measurement, should be done.

 

- It is appreciable that the authors have studied: Synthesis of ZnO nanorods at very low temperatures using pre-treatment growth solution with ultrasonic. But the work presented here lacks more relevant characterizations. In addition, the work is very described, and often qualitative, which can be noticed by the small number of references, which validate the obtained results. A stronger discussion must be done before considering this work for publication.

Author Response

Dear sir,

 

Your comments are valuable. The corrected version is attached

 

Thanks so much

 

Warm regards

Ahmad Hamdan

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Why authors are so much reluctant to do a simple XRD characterizations..? 

Reviewer 2 Report

This version may be considered for publication.