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Odyssey1989

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liguan525(金币+1): 谢谢参与


楼主好厉害!
102楼2013-10-21 18:45:22
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木蛇

新虫 (初入文坛)



liguan525(金币+1): 谢谢参与
LZ这么厉害 审稿……
105楼2013-10-21 20:25:37
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bachier

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小木虫: 金币+0.5, 给个红包,谢谢回帖
我的给你分享一下:
接受的:
Reviewer #1: authors reported a seed-mediated growth of Pt nanoparticles with tunable shapes and sizes using organometallic precusor.  Although various growth mechanisms on the morphology control of Pt nanoparticles have been reported previously, especially from Dr. Younan Xia and Dr. Hong Yang's groups, respectively, the proposed competetive growth between <111> and <100> facets discussed with respect to the precursor concentration and deposition surface area was rather interesting.  Authors also conducted the electrochemical measurements on ethanol oxidation fuel cell anodic reaction.  However, the comparison with commerical (ETEK) catalyst was not presented, even it had been mentioned in the experimental section.  

A few more comments:

1. Author need to polish the introduction and/or conclusion parts to show the big picture of the work, and more important, the different from previous results.
2. several details need to been taken care of.  For example, ETEK data mentioned above; methanol concetrantion was 0.5 M in the experimental part, but 0.1 M in the discussion part; reference potential sometime indicated as Ag/AgCl, sometimes as SCE.  
3. one more suggestion, author shouldn't present the simulated figures in the top row of scheme 1: unless there was direct support from TEM, it's too obscue to conclude the exact stuctures, especially for the multipods.



Reviewer #2: In this manuscript the authors employed a seed-mediated solvothermal procedure for the preparation of platinum nanoparticles.  They adjusted several reaction parameters including the platinum precursor to seed molar ratio (PPS), the precursor addition rate and the seed size, and investigated their effects on the final product.  They were able to give a reasonable explanation on the experimental results based on reaction thermodynamics and kinetics.  They also tried to understand the growth process using a semi-quantified number of platinum precursor concentration to nanoparticle surface area ratio (c/s).

Although the innovative insights of this manuscript are just moderate as most of their observations and arguments have been proposed in previous publications, overall I think it is a decent research article as the subject itself can bring a wide scientific interest to readers.  Their systematic study and substantial data can potentially provide some useful clues in the exploration of new platinum nanomaterials.  I would like to recommend it for publication in the Journal of Colloid and Interface Science after a major revision and the following questions being addressed.

1.  The authors suggested an anisotropic growth mechanism for the formation of branched platinum nanoparticles when the PPS value was high.  However this mechanism is more often applied in understanding anisotropic growth of materials with dramatic anisotropy in different facets, such as oxides and selenides.  It is known that additional nucleation by platinum precursor itself can occur when PPS is rather high (Nano Res. 2009, 2, 406-415), and branched nanostructures can form via oriented attachment among primary nanoparticles (Adv. Mater. 2009, 21, 1013-1020).  It is not very convincing to exclude this possible mechanism without any experimental evidence.  More experiments are suggested to justify their argument.  For example, TEM study of the products collected after a short reaction time can tell whether there is additional nucleation and the products collected after different reaction time can provide a direct evidence of the growth process.  A careful HR-TEM observation
of the branched platinum nanoparticles will also be helpful in distinguishing these two mechanisms, as the oriented attachment can not avoid formation of twin planes while an anisotropic growth usually leads to single crystalline structures (ACS Nano 2010, 4, 1501-1510; J. Am. Chem. Soc. 2008, 130, 4590-4591).

2.  The definition of PPS (the molar ratio of Pt(acac)2/seed) is a little bit amphibolous to readers.  It will be helpful if the authors can make a more clear definition.  Do the moles of seed stand for the quantity of platinum nanoparticles or platinum metal?  How did the authors determine the moles of platinum nanoparticles in the experiments if the molar number stands for the first one?

3.  The PPS numbers in Figure 3, 5 and 6 and their captions should be N rather than 1:N based on their definition.

4.  I am confused with the concentration of methanol in their electrochemical tests.  They mentioned 0.5 M in the "Materials and methods" part while 0.1 M in Figure 5.  The authors should have a double check with this number.

5.  Labeling 1a and 1b should be exchanged in the caption of Figure 6 from context.

6.  The authors should cite proper references to support their arguments.  For example, reference [84] on page 13 has nothing with methanol oxidation reaction thus cannot support their sentences "In all cases, the voltammetric features are consistent with previous literature [84], .".  References are needed to support their argument on page 11, "Once introducing excess precursor, the growth along <111> faces is highly accelerated, generating branched NPs".

7.  Wording of the manuscript needs further polishing.  There are quite a few misuses of words and grammar in the text.
106楼2013-10-21 20:55:35
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bachier

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小木虫: 金币+0.5, 给个红包,谢谢回帖
被拒的:
Reviewer: 1
>
>Recommendation: Publish elsewhere.
>
>Comments:
>This paper describes the formation of Au-Ag bimetallic nanorods using decahedral Au nanocrystals as the templates. A variety of such bimetallic nanorods have been synthesized. Even though some of these heterostructures have been reported before, this work adds more variety to the products formed. From reading the experimental procedure, it is unclear if the gold seeds contain a silver coating. The experimental section is not well-written and is somewhat confusing. It is not clear the volumes of AgNO3 used for all the samples. Additional comments are given below.
>1.        Please check Tsuji’s work on growth of the bimetallic heterostructures. His papers should be cited.
>2.        Ref. 3: One author name is incorrectly spelled. Ref. 5: Authors should be corrected to “Chen, Y.-H.; Hung, H.-H.; Huang, M. H.” Journal abbreviation should be used for Coordination Chemistry Reviews. Change Angew. Chem. to Angew. Chem., Int. Ed. Ref. 10a: 48 should not be in bold text. Ref. 10-13: No dot after the reference number. These examples show that the reference section should be checked again carefully.
>3.        Please rewrite the following sentence: “However, most reports of heterogeneous growth are noble metal and other nonnoble substances …” This sentence is not so easy to understand.
>4.        Check spelling for PVP. Change decahedrons to decahedra. What was the oil heating temperature in the preparation of the gold seed particles? No need to write “this method is not published”.
>5.        Experimental Section: There should be a space between a number and its unit.
>6.        The description for making nanobottles is not clear. State volume and concentration of HAuCl4 solution used.
>7.        For making nanonails, state 70 microliters of propane diamine was added.
>8.        Why AgNO3 was added in the synthesis of Au decahedra and nanorods? Has silver incorporated into the resulting Au particles? Any EDS data to support the composition of the resulting Au particles?
>9.        Figure 4B: “far to Au tip” is incorrect. It can be changed to “at the other end of the nanorod”. Fix the same problem in Figure S1.
>10.        Figure S17: When NH3 is added, Ag(NH3)2+ should form, so the solution becomes clear. See, for example, J. Phys. Chem. C 2011, 115, 17768, for relevant discussion. This role of NH3 should be discussed, instead of saying that it acts as a reducing ability modifier.
>11.        Since amounts of AgNO3 added for making the bimetallic nanorods of different lengths are different, how do we know it is the growth rate causing the one-side or two-side growth? What is the evidence of slower or faster rate of growth, except by comparing the lengths of the nanorod products?
>12.        There is no evidence to suggest preferential adsorption of PDDA on {110} and {100} facets. It is the decahedra which serve as templates to guide the formation of penta-twinned nanorod structure. Please remove this statement.
>13.        How come the figures in the Supporting Information are not arranged according to the order they are discussed in the main text? For example, S17 is discussed before S9 and S11.
>
>In summary, this paper only presents the synthetic results but lack a deeper investigation of the growth rate and ammonia effect. There are also extensive corrections to make. This paper is not recommended for publication in JACS in its present form.
>
>
>Additional Questions:
>Significance: Moderate (not suitable for JACS)
>
>Novelty: High (suitable for JACS)
>
>Broad interest: High (suitable for JACS)
>
>Scholarly presentation: Moderate (not suitable for JACS)
>
>Are the conclusions adequately supported by the data?: In Part
>
>Are the literature references appropriate and correct?: In Part
>
>
>Reviewer: 2
>
>Recommendation: Publish in JACS after minor revisions.
>
>Comments:
>The authors studied an asymmetric growth of heterometallic nanorods by precise control of growth kinetics. Their results are excellent, which provide good information to induce asymmetry from the symmetric morphology. This manuscript is suitable for the publication after the adjustment of subtle things.
>
>1) In the synthesis, Figure 2 is better to be located in Supporting Information, because the structures were already reported in other literatures, and not brand-new. The authors claimed that the synthesis of decahedrons was an unpublished result, but the synthetic procedure must be clear for giving enough information to the others. Therefore, the synthetic conditions of the seeds and the products should be written in detail (in Supporting Information). What is the reaction temperature for the decahedron synthesis? Did'n the researcher add more Ag precursor solutions into the reaction mixture for bimetallic Ag-Au growth? Please write clearly and in detail for the synthetic procedures.
>
>2) In the left column of page 2, line 48-52, the authors described selective absorption of PDDA on {110} and {100}, favoring the longitudinal growth. However, PDDA also has a significant role in the synthesis of Au decahedral seeds, which have only {111} surfaces. Apparently, PDDA seems to stabilize {111} as well as {100} and {110}, but its preference may be altered by the different reaction conditions. Can the authors clearly describe this aspect in the manuscript? Perhaps it needs some additional experiments.
>
>Additional Questions:
>Significance: Highest (top 5%, suitable for JACS)
>
>Novelty: Highest (top 5%, suitable for JACS)
>
>Broad interest: Highest (top 5%, suitable for JACS)
>
>Scholarly presentation: High (suitable for JACS)
>
>Are the conclusions adequately supported by the data?: In Part
>
>Are the literature references appropriate and correct?: Yes
107楼2013-10-21 20:58:48
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bachier

金虫 (职业作家)



小木虫: 金币+0.5, 给个红包,谢谢回帖
同一篇文章,接受的:
Reviewer: 1
>
>Recommendation: Publish as is in ACS Nano; no revisions needed.
>
>Comments:
>This is a very good and very interesting article that describes the selective deposition of Pt onto active sites on Au nanostructures to create novel cage structures. Not only does this approach to the synthesis of nanostructures strikes me as completely new, but further many of the structures they show can not be obtained in with any other method.  Furthermore, the work is fairly complete and well-presented.  I have only one very minor suggestion to make before publication: remove the work "technologies" from the abstract.  Besides that this article seems ready for publication.
>
>Additional Questions:
>Is this paper in the top 15% of manuscripts in the field?: Yes
>
>If this paper is not in the top 15% of manuscripts in the field:
>
>Is it appealing to a broad audience?: Yes
>
>Does the manuscript give a complete description of the procedures that could be reproduced by others in the field?: Yes
>
>Are the conclusions adequately supported by the data?: Yes
>
>Are the literature references appropriate and correct?: Yes
>
>Is the manuscript a comprehensive article/review?: Yes
>
>Significance: High
>
>Novelty: Top 5%
>
>Broad interest: High
>
>Scholarly presentation: Top 5%
>
>
>Reviewer: 2
>
>Recommendation: Publish in ACS Nano after minor revisions noted.
>
>Comments:
>This paper reports the preparation of Pt frame structures by the selective deposition of Pt on the edges of Au particles of octahedron or decahedron. The results are of interest from both scientific and technological points of view. Especially novel structures of Pt nanorings were formed with a high yield. Therefore, I recommend this paper to be published after the following minor revision.
>
>1.        Authors should comment the dependence of the yield of Pt nanostructures on the ratio of Pt/Au used in the preparation. Could the width of frames be controlled by adjusting the amount of PtCl6- added?
>2.        Why could Pt particles be selectively deposited on the peripheral of decahedral Au particles (Fig. 2)? The edges of decahedral Au particles seem to have same chemical potentials.
>3.        Some of octahedral frame structures seem not to be composed of frames (Fig. 5D). Probably Au(111) facets were covered with thin Pt layers, resulting in the hollow octahedral Pt particles.
>
>Additional Questions:
>Is this paper in the top 15% of manuscripts in the field?: Yes
>
>If this paper is not in the top 15% of manuscripts in the field:
>
>Is it appealing to a broad audience?: Yes
>
>Does the manuscript give a complete description of the procedures that could be reproduced by others in the field?: No
>
>Are the conclusions adequately supported by the data?: Yes
>
>Are the literature references appropriate and correct?: Yes
>
>Is the manuscript a comprehensive article/review?: Yes
>
>Significance: High
>
>Novelty: Moderate
>
>Broad interest: High
>
>Scholarly presentation: High
>
>
>Reviewer: 3
>
>Recommendation: Publish in ACS Nano after minor revisions noted.
>
>Comments:
>The manuscript entitled “Selective Etching Induces Selective Growth and Controlled Formation of Various Pt Nanostructures by Modifying Seed Surface Free Energy” describes the inhomogeneous seeded growth of Pt nanocages by selectively etching the high-energy edges of Au nanostructures, which then act as nucleation sites for Pt growth. Although metal cage-like structures are not new, the authors present a convincing mechanistic description of the etching process followed by the selective growth of Pt. Some general comments are listed below.
>
>On page 4, line 48 the authors suggest that “From Figure 2 B1, only the edges intersected by {111} and {100} facets were etched. However, the edges intersected by {111} facets have no distinct change.” From the TEM images looking down on the {111} faces, though, it is very difficult to determine if any etching occurred. Does an extended etching process in the absence of H2PtCl4 show etching along these intersecting planes? What is the difference in etch rate expected for the different edges/facets vs. twinning planes?
>
>On page 14, line 17 the authors discuss the etching/overgrowth process on a minority of Au particles present in the samples of decahedra that are different shapes (triangular and hexagonal plates as well as nanorods). However, the plates as well as the octahedra and decahedra described in the majority of the study are bounded by {111} planes, and there is little information on the etching process of the nanorods which include {110} and {100} planes that are not located at edges. The authors allude to future studies on different types of particles, but it might be helpful to expand the discussion in this manuscript to include Au particles bounded by {100} facets such as cubes. Also, has the selective etching/overgrowth process been tried with other metals, both as templates and overgrowth metals? This information would be nice to support the generalization of the process.
>
>Does the amount of KI and temperature affect the etch rate or the mechanism of etching?
>
>Additionally, the manuscript should be edited for grammar, typos, and English usage.
>
>
>Additional Questions:
>Is this paper in the top 15% of manuscripts in the field?: Yes
>
>If this paper is not in the top 15% of manuscripts in the field:
>
>Is it appealing to a broad audience?: Yes
>
>Does the manuscript give a complete description of the procedures that could be reproduced by others in the field?: Yes
>
>Are the conclusions adequately supported by the data?: Yes
>
>Are the literature references appropriate and correct?: Yes
>
>Is the manuscript a comprehensive article/review?: No
>
>Significance: High
>
>Novelty: High
>
>Broad interest: High
>
>Scholarly presentation: Moderate
>
>
>Reviewer: 4
>
>Recommendation: Reconsider after major revisions noted.
>
>Comments:
>This manuscript by N. Fan et al. describes an etching-based approach by which hollow ring-/cage-ike Pt nanocrystals can be generated starting from highly faceted Au seeds in an appropriate colloidal environment containing KI and a platinum salt precursor. The obtained nanostructures are certainly intriguing; however I am not completely sure that they are totally unprecedented (the authors should address this concern by putting appropriate emphasis in the introductory section). The proposed growth mechanism seems to be plausible, even though not all conclusions drawn can be accepted beyond any doubt. For example, the control experiments carried out by the authors do not allow one to unambiguously exclude that the PVP capping agent may play a role in assisting selective seed etching. In addition, another mechanistic picture that may be compatible with the formation of I2 (which the authors regard as the true etchant in the system) upon iodine oxidation would initially involve preferential displacement of the capping ligands from selected surfaces sites of the Au seeds, as suggested in the recent literature. Thus, the authors should reconsider certain mechanistic arguments, using them with caution. Finally, I recommend that the authors refine the use of certain terms/notations in their descriptions and arguments (e.g., seeding growth vs. seeded growth; homogeneous/inhomogeneous seeding, homogeneous/heterogeneous nucleation, etc.) taking a closer look at ref. 24 as a reference for the appropriate classification of growth mechanisms, hybrid nanocrystal structures and related subjects.
>English usage should be polished before publication may proceed.
>
>
>Additional Questions:
>Is this paper in the top 15% of manuscripts in the field?: No
>
>If this paper is not in the top 15% of manuscripts in the field: It could be improved to be in the top 15% with appropriate revisions.
>
>Is it appealing to a broad audience?: Yes
>
>Does the manuscript give a complete description of the procedures that could be reproduced by others in the field?: Yes
>
>Are the conclusions adequately supported by the data?: Yes
>
>Are the literature references appropriate and correct?: Yes
>
>Is the manuscript a comprehensive article/review?: Yes
>
>Significance: High
>
>Novelty: Moderate
>
>Broad interest: High
>
>Scholarly presentation: Moderate
108楼2013-10-21 21:03:26
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bachier

金虫 (职业作家)


同一篇文章被拒的:
Referee 1:

Importance: D) important but too specialized

Hypotheses Yes/No: Yes

Appropriate Length: Yes

Different Journal:  

Recommend Acceptance: D) No

Referee Letter: Authors reported preparation of hollow Pt nanostructures (such as nanoring and nanocage) via selective etching of gold nanoparticle seed and controlled growth of Pt. The method involves heating gold seed in presence of iodide, polymer (PVP) and platinum salt. A new mechanism of hollow Pt nanostructures formation is proposed that involves selective etching of gold surface by iodide/iodine that acts as active site for Pt deposition. This selective etching leads to controlled deposition of Pt at specific sites of Au seed, leading to different hollow Pt structures --- depending on Au seed used. The work is studied in great care. However, the subject matters such as seeding growth, hollow metal nanoparticle preparation (either via Kirkendall effect or Galvanic deposition) are reported by many works and similar structures are observed earlier. Thus high significance of this work is not apparent. This work may be more suitable in specialized journals like J. Phys. Chem C or J Mater. Chem.

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110楼2013-10-21 21:05:24
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Altlantis

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小木虫: 金币+0.5, 给个红包,谢谢回帖
我们都是被审,原来审别人也累啊!

[ 发自小木虫客户端 ]
113楼2013-10-22 07:24:17
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tjyych

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小木虫: 金币+0.5, 给个红包,谢谢回帖
审稿意见还是要根据所审的文章来写,你觉得不好的地方都可以挑出来,不用管其他的审稿人的意见,因为每个人都有自己的看法
114楼2013-10-23 05:01:37
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小二郎呀

木虫 (正式写手)


这么牛呀
115楼2013-10-23 08:44:13
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daofengbuli

新虫 (初入文坛)


这是神马情况?
118楼2013-10-23 20:00:34
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liguan525

银虫 (小有名气)


送红花一朵
引用回帖:
110楼: Originally posted by bachier at 2013-10-21 21:05:24
同一篇文章被拒的:
Referee 1:

Importance: D) important but too specialized

Hypotheses Yes/No: Yes

Appropriate Length: Yes

Different Journal:  

Recommend Acceptance: D) No

Refe ...

非常感谢,太赞啦
121楼2013-10-24 11:58:53
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liguan525

银虫 (小有名气)


引用回帖:
118楼: Originally posted by daofengbuli at 2013-10-23 20:00:34
这是神马情况?

我只是替别人写,不是我审,呵呵
122楼2013-10-24 11:59:45
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liguan525

银虫 (小有名气)


引用回帖:
115楼: Originally posted by 小二郎呀 at 2013-10-23 08:44:13
这么牛呀

我只是替别人写,不是我审,呵呵
123楼2013-10-24 11:59:52
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liguan525

银虫 (小有名气)


引用回帖:
114楼: Originally posted by tjyych at 2013-10-23 05:01:37
审稿意见还是要根据所审的文章来写,你觉得不好的地方都可以挑出来,不用管其他的审稿人的意见,因为每个人都有自己的看法

恩,只是参考一下,还是要针对文章写的
124楼2013-10-24 12:00:22
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幼麟儿

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楼主都是审稿人啦,牛!膜拜呀。。。。。。。。
127楼2014-03-07 10:35:52
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jewelwang

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129楼2019-11-26 15:26:29
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引用回帖:
113楼: Originally posted by Altlantis at 2013-10-22 07:24:17 我们都是被审,原来审别人也累啊!

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