Correction: Colloidal synthesis of Au nanomaterials with a controlled morphology and crystal phase via the [Au(I)-oleylamine] complex

Abstract

Correction for ‘Colloidal synthesis of Au nanomaterials with a controlled morphology and crystal phase via the [Au(I)-oleylamine] complex’ by Gang Wang et al., J. Mater. Chem. A, 2021, 9, 19534–19553, https://doi.org/10.1039/D1TA03666A.

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The authors regret that the crystal phase of Au nanowires reported in ref. 55 was not classified correctly in their published Review paper; consequently, minor corrections are required for Section 2, Fig. 1, Table 1, and Section 2.2.2, where ref. 55 was discussed. The details are listed below.

In Section 2 (page 19536), the sentences in the second paragraph “In 2010, the Au NWs with mixed fcc and hexagonal close-packed (hcp) phases were synthesized by Kura et al.⁵⁵ Soon after that, Huang et al. made a breakthrough in crystal phase controlled synthesis of Au nanomaterials based on a proposed size effect.^41,43,56 They reported the syntheses of 2H Au square sheets (AuSSs)⁴¹ and 2H/fcc Au square-like plates (AuSPs)⁵⁶ in 2011 and 2H/fcc tadpole-shaped Au NWs⁴³ in 2012.”

should be revised to: “In 2010, fcc Au NWs with mixed atomic stacks were synthesized by Kura et al.⁵⁵ Soon after that, Huang et al. made a breakthrough in crystal phase controlled synthesis of Au nanomaterials based on a proposed size effect.^41,43,56 They reported the syntheses of hexagonal close-packed (hcp, 2H type) Au square sheets (AuSSs)⁴¹ and 2H/fcc Au square-like plates (AuSPs)⁵⁶ in 2011 and 2H/fcc tadpole-shaped Au NWs⁴³ in 2012.”

The corrected version of Fig. 1 is displayed below with the caption for 2010 updated:

Fig. 1 Timeline showing the development of Au nanomaterials synthesized using the [Au(I)-oleylamine] complex.

In Table 1, in addition to the modified ‘Proposed growth mechanism’ for ref. 55, one minor correction has also been made to the second to last row in column ‘Reactants except oleylamine and Au precursor’ to supplement the description of ref. 42.

Table 1 Summary of Au nanomaterials synthesized by [Au(I)-oleylamine] complex

Morphology	Phase	Reactants except oleylamine and Au precursor	Temperature and time	Proposed growth mechanism	Ref.
a RT: room temperature. b TIPS: triisopropylsilane.
Nanoparticle	fcc	Water/toluene	RT,^a ∼12 h	—	44
	—	Toluene	110 °C, 2 h	—	45
	fcc	Water	80 °C, —	Decomposition of [Au-oleylamine] complex	46
	fcc	Water	80 °C, 3 h	Decomposition of [Au-oleylamine] complex	62
	—	Chloroform	60 °C, 24 h	Decomposition of [Au-oleylamine] complex	63
	fcc	Toluene	65 °C, 6 h	—	65
	fcc	4-tert-Butyl toluene/1,2-hexadecanediol	200 °C, 1.5 h	—	66
	fcc	Oleic acid	Microwave, 1 min	—	38
Nanowire	—	Oleic acid/toluene/ascorbic acid	Step 1: 120 °C, step 2: RT, step 3: RT, several hours to a few days	Oriented-attachment mechanism	47
	—	—	RT, 4 days	Micellar formation mechanism	33
	—	Hexane/Ag nanoparticles	60 °C, 24–100 h	Micellar formation mechanism	48
	fcc	Route 1: oleic acid/hexane	80 °C, ∼5 h	Micellar formation mechanism	49
		Route 2: hexane
	fcc	Chloroform	Step1: RT, 24 h	Micellar formation mechanism	50
			Step2: 35–40 °C, several days
	fcc	Hexane/TIPS^b	RT, 4–5 h	Oriented-attachment mechanism	67
	—	Chloroform/CO	60 °C, 10 min	—	68
	fcc	Hexane/O2	Step 1: RT, 24 h	Etching mechanism	52
			Step 2: 80 °C, 6 h
	fcc	—	80 °C, 24 h	Micellar formation mechanism	69
	—	—	75 °C, 5–6 h	—	71
	—	Hexane/TIPS	40 °C, 24 h	Micellar formation mechanism	72
	—	Route 1: hexane	Route 1 – step 1: 25 °C, 48 h; step 2: 45 °C, 48 h	Micellar formation mechanism	73
		Route 2: hexane/TIPS	Route 2 – 40 °C, 3 h
	—	Hexane/TIPS	RT, 12 h	Disk stacking mechanism	54
	2H/fcc	Hexane/graphene oxide sheets	55 °C, 36 h	Size effect	43
	2H/fcc	Hexane/graphene oxide sheets	Step 1: 55 °C, 10 h	Size effect
			Step 2: RT, 2 days
	fcc	—	Step 1: 60 °C, step 2: 85 °C, 2 h	Reconstruction of nanoparticles or their agglomeration/stacking fault	55
	hcp/fcc	—	65 °C, 72 h	Stacking fault	94
	hcp/fcc	CuCl2	160 °C, 4 min	Oxidative etching	58
	tcp	Hexane/TIPS	RT, ∼5 h	Geometrical frustration effect	57
Nanorod	fcc	Chloroform/amorphous Fe nanoparticles	RT, 6–8 days	Etching mechanism	51
	—	Cyclohexane/TIPS	Step 1: RT, 2 h	—	75
			Step 2: RT, 6–30 h
	—	Cyclohexane/TIPS	Step 1: RT, 2 h	Oriented attachment mechanism	53
			Step 2: RT, 30 h
	4H/fcc	—	70 °C, 17 h	Size effect/stacking fault	32
	fcc-2H-fcc	n-Dodecylamine/O2	65 °C, 17 h	Oxidative etching	59
	fcc-2H-fcc	Hexane/2H-Pd nanoparticles	60 °C, 12 h	Epitaxial growth	60
Nanosheet	2H	Hexane/ethanol/graphene oxide sheets	55 °C, 16 h	Size effect	41
	2H/fcc	Hexane/ethanol/graphene oxide sheets	55 °C, 28 h	Size effect
	2H/fcc	Hexane/ethanol/graphene oxide sheets	Step 1: 58 °C, 14 h	Size effect	56
			Step 2: 58 °C, 10 h
	2H/fcc	Hexane/squalene/1,2-dichlorobutane/4-tert-butylpyridine	58 °C, 17 h	Size effect	42
Nanoribbon	4H	Hexane/1,2-dichloropropane	58 °C, 16 h	Size effect	39

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Lastly, in Section 2.2.2 (page 19544), the sentences in the second paragraph “In 2010, Kura et al. synthesized Au NWs with mixed fcc and hcp phases by reducing HAuCl₄ in oleylamine.⁵⁵ They proposed that the Au NWs were generated by the restructuring of nanoparticles or agglomerates formed from the R-NH₂ClAu⁺ intermediates. The HRTEM image taken from the 〈110〉 direction showed that the atomic stacking sequence changed from “ABCA” to “ACBC” and “ABAB” in some segments. The occurrence of intrinsic and extrinsic stacking faults during the Au NW growth process may cause the formation of hcp segments in the Au NWs.”

should be revised to: “In 2010, Kura et al. synthesized Au NWs with mixed atomic stacks by reducing HAuCl₄ in oleylamine.⁵⁵ They proposed that the Au NWs were generated by the restructuring of nanoparticles or agglomerates formed from the R-NH₂ClAu⁺ intermediates. The HRTEM image taken from the 〈110〉 direction showed that the atomic stacking sequence changed from “ABCA” to “ACBC” and “ABAB” in some segments. The occurrence of intrinsic and extrinsic stacking faults during the Au NW growth process may cause the formation of mixed atomic stacks in the fcc Au NWs.”

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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Footnote

† Equal contribution.

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