Graphene Quantum Dots Assisted Exfoliation of Atomically-thin 2D Materials and As-formed 0D/2D van der Waals Heterojunction for HER (doi:10.21979/N9/UZIK0N)

View:

Part 1: Document Description
Part 2: Study Description
Part 3: Data Files Description
Part 4: Variable Description
Part 5: Other Study-Related Materials
Entire Codebook

Graphene Quantum Dots Assisted Exfoliation of Atomically-thin 2D Materials and As-formed 0D/2D van der Waals Heterojunction for HER

doi:10.21979/N9/UZIK0N

DR-NTU (Data)

2022-02-27

2

Gong, Jun; Chen, Peng, 2022, "Graphene Quantum Dots Assisted Exfoliation of Atomically-thin 2D Materials and As-formed 0D/2D van der Waals Heterojunction for HER", https://doi.org/10.21979/N9/UZIK0N, DR-NTU (Data), V2, UNF:6:Cqe4Zh57FSIscgjU/DNOZA== [fileUNF]

Graphene Quantum Dots Assisted Exfoliation of Atomically-thin 2D Materials and As-formed 0D/2D van der Waals Heterojunction for HER

doi:10.21979/N9/UZIK0N

Gong, Jun (Nanyang Technological University)

Chen, Peng (Nanyang Technological University)

excel

AME-IRG grant A (1983c0025)

AcRF tier 2 grant (MOE2017-T2-2-005)

DR-NTU (Data)

Gong Jun

Gong Jun

2022-01-20

https://doi.org/10.21979/N9/UZIK0N

Engineering, Engineering, 2D materialsGraphene quantum dotsvan der Waals heterojunctionHydrogen evolution reaction

Atomically-thin 2D materials have changed the landscapes of many fields. Their applications however are limited by lack of methods for readily and scalable production with high quality. Herein, a simple strategy is reported to exfoliate pristine single or few-layered 2D materials (MoS2, h-BN, WS2, g-C3N4 microsheets) using bottom-up grown amphiphilic graphene quantum dots (GQDs) as both the intercalation agent and dispersant. Further, it is shown that the as-formed GQD/MoS2 van der Waals heterojunctions (vdWHs) give enhanced performance for electrocatalysis of hydrogen evolution reaction (HER) owing to the synergistic coupling at the 0D/2D heterojunction, delivering a current density of 10 mA cm−2 at a low overpotential of 160 mV with a small Tafel slope of 56.9 mV dec−1. In addition to providing a new method for preparing ultrathin 2D microsheets, this study unleashes the application potential of 2D materials and GQD-based 0D/2D vdWHs as non-precious electrocatalysts.

experimental data

10.1016/j.carbon.2021.08.063

Gong, J., Zhang, Z., Zeng, Z., Wang, W., Kong, L., Liu, J., & Chen, P. (2021). Graphene quantum dots assisted exfoliation of atomically-thin 2D materials and as-formed 0D/2D van der Waals heterojunction for HER. Carbon, 184, 554-561.

10356/155468

Gong, J., Zhang, Z., Zeng, Z., Wang, W., Kong, L., Liu, J., & Chen, P. (2021). Graphene quantum dots assisted exfoliation of atomically-thin 2D materials and as-formed 0D/2D van der Waals heterojunction for HER. Carbon, 184, 554-561.

• Number of cases: 122

• No. of variables per record: 1

• Type of File: text/tab-separated-values

UNF:6:4LKSA8dHnRe4U8glbvCzAw==

• Number of cases: 432

• No. of variables per record: 11

• Type of File: text/tab-separated-values

UNF:6:uU9MAR0fW0FAzexIJPNYeA==

• Number of cases: 167

• No. of variables per record: 10

• Type of File: text/tab-separated-values

UNF:6:dYkhQfm0bbruMXLABgyCiA==

• Number of cases: 370713

• No. of variables per record: 4

• Type of File: text/tab-separated-values

UNF:6:+F24Ws5eyCQuI3YAgS99lg==

• 1.75 - 1.75
• 0 - 0
• 7.8680000000000003 - 7.8680000000000003
• C - C
• 0 - 0
• -61.801000000000002 - -61.801000000000002
• F - F
• 0 - 0
• -0.48899999999999999 - -0.48899999999999999
• I - I
• 0 - 0
• 113.39100000000001 - 113.39100000000001
• 1 - 1
• 0.23499999999999999 - 0.23499999999999999
• 137.328 - 137.328
• 97.5 - 97.5
• 174 - 174
• -2.3860000000000001 - -2.3860000000000001
• 4.0880000000000001 - 4.0880000000000001
• 4.0880000000000001 - 4.0880000000000001
• I - I
• 0 - 0
• -2999.8 - -2999.8
• 1.2555000000000001 - 1.2555000000000001
• -959.8 - -959.8
• 1.01 - 1.01

f83245 Location:

Summary Statistics: Mean 1.127704918032787; Max. 2.1; StDev 0.43606009686141484; Valid 122.0; Min. 0.4

Variable Format: numeric

Notes: UNF:6:4LKSA8dHnRe4U8glbvCzAw==

f83253 Location:

Summary Statistics: Mean 0.6081828571428571; Max. 1.209; Valid 175.0; StDev 0.3501361487949213; Min. 0.007

Variable Format: numeric

Notes: UNF:6:6YkgKC07SykFNQWa7FYviA==

f83253 Location:

Summary Statistics: Mean 590.8204857142857; Min. -278.696; StDev 402.97646737434206; Valid 175.0; Max. 1049.779

Variable Format: numeric

Notes: UNF:6:UZXbvG6/rQz0UbAkSZzb9Q==

f83253 Location:

Summary Statistics: Valid 0.0; Mean NaN; Max. NaN; StDev NaN; Min. NaN

Variable Format: numeric

Notes: UNF:6:lGN8bv773MPTu3TWFzKyIg==

f83253 Location:

Summary Statistics: Valid 106.0; StDev 0.8466192416024882; Min. 0.028; Max. 2.919; Mean 1.4733113207547168;

Variable Format: numeric

Notes: UNF:6:mklpOOeSAmGGc0/ugVBGCg==

f83253 Location:

Summary Statistics: Mean 420.03302830188676; Max. 1139.355; StDev 496.75397546487847; Min. -258.414; Valid 106.0

Variable Format: numeric

Notes: UNF:6:DBsKY5GFfdJewehc09Xq3A==

f83253 Location:

Summary Statistics: Min. NaN; Mean NaN; Max. NaN; StDev NaN; Valid 0.0

Variable Format: numeric

Notes: UNF:6:lGN8bv773MPTu3TWFzKyIg==

f83253 Location:

Summary Statistics: Mean 2.20751968503937; StDev 1.2695874023589202; Max. 4.381; Valid 127.0; Min. 0.034;

Variable Format: numeric

Notes: UNF:6:kByrR2g9IIUmkG1MWG3ang==

f83253 Location:

Summary Statistics: Max. 1.3767; Mean 0.392348031496063; Valid 127.0; Min. -0.8886; StDev 0.6412737983269683

Variable Format: numeric

Notes: UNF:6:8YUWdGcGzcusnhPDSkWiyw==

f83253 Location:

Summary Statistics: Valid 0.0; Min. NaN; StDev NaN; Mean NaN; Max. NaN;

Variable Format: numeric

Notes: UNF:6:lGN8bv773MPTu3TWFzKyIg==

f83253 Location:

Summary Statistics: Max. 1.493; Min. 0.003; StDev 0.4315237318049799; Valid 432.0; Mean 0.7482800925925925;

Variable Format: numeric

Notes: UNF:6:iuVnOwCC0IRpUym8mG7sVw==

f83253 Location:

Summary Statistics: StDev 320.9126142690064; Min. -458.152; Max. 866.475; Mean 402.73887499999995; Valid 432.0

Variable Format: numeric

Notes: UNF:6:5SRGM36MPZ7hlkYAsMl5Jg==

f83294 Location:

Summary Statistics: Max. 167.0; StDev 48.064193186473716; Mean 84.5; Min. 2.0; Valid 166.0;

Variable Format: numeric

Notes: UNF:6:/yjrwo3IM+NOgx06sdrt/A==

f83294 Location:

Summary Statistics: StDev 0.03749460664635391; Mean 0.19094578313253013; Valid 166.0; Min. 0.109; Max. 0.315

Variable Format: numeric

Notes: UNF:6:o1YPSi2NHGN2qzkyIIh2JA==

f83294 Location:

Summary Statistics: Mean 134.65875903614457; Min. 87.84; StDev 14.163616296558232; Max. 168.196; Valid 166.0;

Variable Format: numeric

Notes: UNF:6:cqKIdDHSBQlMSIoTMue6/A==

f83294 Location:

Summary Statistics: Valid 166.0; Max. 139.225; Mean 95.19840963855421; StDev 18.235360734463896; Min. 39.005

Variable Format: numeric

Notes: UNF:6:qePDYCUnlLEOK+wMzHFgMg==

f83294 Location:

Summary Statistics: Max. 214.101; Valid 166.0; Mean 177.37918674698795; StDev 16.23406881748919; Min. 125.93

Variable Format: numeric

Notes: UNF:6:S9XFycvDWB30pp87ZmRuzw==

f83294 Location:

Summary Statistics: Valid 166.0; Mean 5.324813253012046; Min. -177.397; Max. 178.995; StDev 81.52805733797608

Variable Format: numeric

Notes: UNF:6:l2LHJhIwdjucR0zDV2pZJQ==

f83294 Location:

Summary Statistics: Max. 5.503; Mean 3.3099518072289156; Min. 1.872; StDev 0.6591307481205274; Valid 166.0;

Variable Format: numeric

Notes: UNF:6:arA6J9sRBIox+F/on7deCg==

f83294 Location:

Summary Statistics: Max. 5.503; Valid 167.0; Mean 3.2934441536089496; Min. 1.872; StDev 0.6314461734884239

Variable Format: numeric

Notes: UNF:6:uybNEtO238UzV0OiE19SzA==

f83294 Location:

Summary Statistics: Max. NaN; Valid 0.0; Min. NaN; StDev NaN; Mean NaN

Variable Format: numeric

Notes: UNF:6:AQZPslxix2sfC3sS3npEsA==

f83294 Location:

Summary Statistics: StDev 0.11561616965481825; Min. -0.3999999999999999; Valid 166.0; Max. 0.7850000000000001; Mean 0.01653614457831328;

Variable Format: numeric

Notes: UNF:6:XVkS7nrCUcedfCCdiJyU3Q==

f83276 Location:

Summary Statistics: Mean 34186.72899614107; Valid 370713.0; Max. 71700.0; StDev 21567.752045732224; Min. -2999.6;

Variable Format: numeric

Notes: UNF:6:SUs3eTHoOTJWSKEDvhznjA==

f83276 Location:

Variable Format: character

Notes: UNF:6:vwj7ebjFHXinYAJD1gns0Q==

f83276 Location:

Variable Format: character

Notes: UNF:6:CGUPrkKE8ejVD7CS2SVpdA==

f83276 Location:

Variable Format: character

Notes: UNF:6:o8hV0+POC9bLcA15bJTpgw==

Label:

0.0023 - NanoScope Analysis.txt

text/plain

Label:

0163 5nm.jpg

image/jpeg

Label:

0324.jpg

image/jpeg

Label:

0516.jpg

image/jpeg

Label:

0650 5NM.jpg

image/jpeg

Label:

0674.jpg

image/jpeg

Label:

10- NanoScope Analysis.jpg

image/jpeg

Label:

11- NanoScope Analysis.jpg

image/jpeg

Label:

12- NanoScope Analysis.jpg

image/jpeg

Label:

13- NanoScope Analysis.jpg

image/jpeg

Label:

14- NanoScope Analysis.jpg

image/jpeg

Label:

15- NanoScope Analysis.jpg

image/jpeg

Label:

16- NanoScope Analysis.jpg

image/jpeg

Label:

17- NanoScope Analysis.jpg

image/jpeg

Label:

1 - NanoScope Analysis.jpg

image/jpeg

Label:

2.2Height Sensor.jpg

image/jpeg

Label:

2 - NanoScope Analysis.jpg

image/jpeg

Label:

3.005 - NanoScope Analysis PG.txt

text/plain

Label:

3 - NanoScope Analysis.jpg

image/jpeg

Label:

4 - NanoScope Analysis.jpg

image/jpeg

Label:

5 - NanoScope Analysis.jpg

image/jpeg

Label:

6 - NanoScope Analysis.jpg

image/jpeg

Label:

7 - NanoScope Analysis.jpg

image/jpeg

Label:

8 - NanoScope Analysis.jpg

image/jpeg

Label:

9 - NanoScope Analysis.jpg

image/jpeg

Label:

Figure 1.tif

image/tiff

Label:

Figure 2.tif

image/tiff

Label:

Figure 3.tif

image/tiff

Label:

Figure 4.tif

image/tiff

Label:

Figure 5.tif

image/tiff

Label:

FS10.tif

image/tiff

Label:

FS11.tif

image/tiff

Label:

FS1.tif

image/tiff

Label:

FS2.tif

image/tiff

Label:

FS3.tif

image/tiff

Label:

FS4.tif

image/tiff

Label:

FS5.tif

image/tiff

Label:

FS6.tif

image/tiff

Label:

FS7.tif

image/tiff

Label:

FS8.tif

image/tiff

Label:

FS9.tif

image/tiff

Label:

GJ633MG10%3g.txt

text/plain

Label:

GJ633PG10%.txt

text/plain

Label:

Height 170dots.jpg

image/jpeg

Label:

Height.jpg

image/jpeg

Label:

Manuscript revised Carbon.docx

application/vnd.openxmlformats-officedocument.wordprocessingml.document

Label:

MoS2633-1800.txt

text/plain

Label:

pt 50 h2so4 stability.txt

text/plain

Label:

Rio9_0331.tif

image/tiff

Label:

Rio9_0348.tif

image/tiff

Label:

Rio9_0357.jpg

image/jpeg

Label:

Rio9_0496 HBN 5nm.jpg

image/jpeg

Label:

Rio9_0558.jpg

image/jpeg

Label:

SI-carbon-1.docx

application/vnd.openxmlformats-officedocument.wordprocessingml.document