Green chitosan: thiourea dioxide cleaning gel for manganese stains on granite and glass substrates

Bruno Campos; Alexandra Marco; Guilhermina Cadeco; David M. Freire-Lista; Joaquin Silvestre-Albero; Manuel Algarra; Eduarda Vieira; Manuela Pintado; Patrícia Moreira

doi:10.1186/s40494-021-00632-y

Green chitosan: thiourea dioxide cleaning gel for manganese stains on granite and glass substrates

Bruno Campos
, Alexandra Marco
, Guilhermina Cadeco
, David M. Freire-Lista
, Joaquin Silvestre-Albero
, Manuel Algarra
, Eduarda Vieira
, Manuela Pintado
, Patrícia Moreira^*

^*Autor correspondente para este trabalho

Resultado de pesquisa › revisão de pares

9 Citações (Scopus)

35 Transferências (Pure)

Resumo

The cleaning or removal of manganese stains on Cultural Heritage has not been much tested or successful so far. The aim of this article was to assess a new green cleaning gel for Mn-rich black-blue stains on different substrates. The black-blue stains were characterized at optical and chemical level through colour-related data, optical microscope, FTIR, XRF and XPS. Mn-stained granite found on historical churches at Vila Real (North of Portugal) and glass jars of Leclanché cells, belonging to the ISEP’s Museum (Portugal) collection, were the ideal case studies to test the efficiency of chitosan: thiourea dioxide (TD) cleaning gel. TD proved to be the best candidate to reduce insoluble manganese oxides, over Hydroxylamine Hydrochloride and Hydroxymethanesulfinic Acid. Cleaning assays performed on stained granite samples collected at a historical quarry and in situ application on stained granite churches allowed removal of the stains to a satisfactory level. Similar results were obtained on stained glass jars.

Idioma original	English
Número do artigo	160
Número de páginas	11
Revista	Heritage Science
Volume	9
Número de emissão	1
DOIs	https://doi.org/10.1186/s40494-021-00632-y
Estado da publicação	Publicado - 16 dez. 2021

ODS da ONU

Este resultado contribui para o(s) seguinte(s) Objetivo(s) de Desenvolvimento Sustentável

ODS 11 Cidades e comunidades sustentáveis

Acesso ao documento

10.1186/s40494-021-00632-yLicença:

40060392Final published version, 2,42 MBLicença:

http://hdl.handle.net/10400.14/36288Licença:

Outros arquivos e links

Link to publication in Scopus

CITAR: Research Center for Science and Technology of the Arts
Vieira, E. (PI), Nobre da Silva Pais, A. M. (Outra carreira/categoria no setor público), Filipe, C. (Carreira no setor privado), Serra, S. (Professor Auxiliar), Baltazar, A. (Professor Auxiliar), Lobo, C. (Professor Auxiliar Convidado), Carmona, C. R. (Professor Auxiliar), Sá, C. (Professor Auxiliar), Sousa, G. V. E. (Professor Catedrático), Pereira, H. M. (Professor Auxiliar), Neves, J. (Professor Auxiliar Convidado), Teixeira, J. (Professor Auxiliar Convidado), Gomes, J. A. (Professor Auxiliar Convidado), Carvalho, J. V. (Professor Auxiliar Convidado), Castro, L. (Professor Auxiliar), Teixeira, L. (Professor Auxiliar), Aguiar, M. (Professor Auxiliar), Crespo, N. (Professor Auxiliar), Camarneiro, N. (Professor Auxiliar Convidado), Costa, P. R. (Professor Auxiliar Convidado), Pestana, P. D. (Professor Auxiliar Convidado), Alves, P. (Professor Auxiliar Convidado), Kunz, S. (Professor Auxiliar), Neves, S. (Professor Auxiliar Convidado), Coutinho, V. M. (Professor Auxiliar Convidado), Galán-Pérez, A. (Carreira no setor privado), Rangel, A. (Docente do ensino não superior), Natálio, C. (Investigador), Henriques, F. (Investigador), Lopes, M. I. (Carreira no setor privado), Bordalo, R. (Investigador) & Lammeren, S. (Investigador)
1/01/20 → 31/12/25
Projeto
BIO4MURAL: Soluções inovadoras de biotecnologia para remoção de pigmentação e conservação preventiva de pintura mural cultural e historicamente relevante
Pintado, M. M. (Investigador) & Costa, P. R. (PI)
1/06/18 → 30/11/21
Projeto

Citação

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title = "Green chitosan: thiourea dioxide cleaning gel for manganese stains on granite and glass substrates",

abstract = "The cleaning or removal of manganese stains on Cultural Heritage has not been much tested or successful so far. The aim of this article was to assess a new green cleaning gel for Mn-rich black-blue stains on different substrates. The black-blue stains were characterized at optical and chemical level through colour-related data, optical microscope, FTIR, XRF and XPS. Mn-stained granite found on historical churches at Vila Real (North of Portugal) and glass jars of Leclanch{\'e} cells, belonging to the ISEP{\textquoteright}s Museum (Portugal) collection, were the ideal case studies to test the efficiency of chitosan: thiourea dioxide (TD) cleaning gel. TD proved to be the best candidate to reduce insoluble manganese oxides, over Hydroxylamine Hydrochloride and Hydroxymethanesulfinic Acid. Cleaning assays performed on stained granite samples collected at a historical quarry and in situ application on stained granite churches allowed removal of the stains to a satisfactory level. Similar results were obtained on stained glass jars.",

keywords = "Chitosan, Glass, Granite, Green cleaning gel, Leclanch{\'e} cells, Manganese stains",

author = "Bruno Campos and Alexandra Marco and Guilhermina Cadeco and Freire-Lista, \{David M.\} and Joaquin Silvestre-Albero and Manuel Algarra and Eduarda Vieira and Manuela Pintado and Patr{\'i}cia Moreira",

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day = "16",

doi = "10.1186/s40494-021-00632-y",

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journal = "Heritage Science",

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T2 - thiourea dioxide cleaning gel for manganese stains on granite and glass substrates

AU - Campos, Bruno

AU - Marco, Alexandra

AU - Cadeco, Guilhermina

AU - Freire-Lista, David M.

AU - Silvestre-Albero, Joaquin

AU - Algarra, Manuel

AU - Vieira, Eduarda

AU - Pintado, Manuela

AU - Moreira, Patrícia

PY - 2021/12/16

Y1 - 2021/12/16

N2 - The cleaning or removal of manganese stains on Cultural Heritage has not been much tested or successful so far. The aim of this article was to assess a new green cleaning gel for Mn-rich black-blue stains on different substrates. The black-blue stains were characterized at optical and chemical level through colour-related data, optical microscope, FTIR, XRF and XPS. Mn-stained granite found on historical churches at Vila Real (North of Portugal) and glass jars of Leclanché cells, belonging to the ISEP’s Museum (Portugal) collection, were the ideal case studies to test the efficiency of chitosan: thiourea dioxide (TD) cleaning gel. TD proved to be the best candidate to reduce insoluble manganese oxides, over Hydroxylamine Hydrochloride and Hydroxymethanesulfinic Acid. Cleaning assays performed on stained granite samples collected at a historical quarry and in situ application on stained granite churches allowed removal of the stains to a satisfactory level. Similar results were obtained on stained glass jars.

AB - The cleaning or removal of manganese stains on Cultural Heritage has not been much tested or successful so far. The aim of this article was to assess a new green cleaning gel for Mn-rich black-blue stains on different substrates. The black-blue stains were characterized at optical and chemical level through colour-related data, optical microscope, FTIR, XRF and XPS. Mn-stained granite found on historical churches at Vila Real (North of Portugal) and glass jars of Leclanché cells, belonging to the ISEP’s Museum (Portugal) collection, were the ideal case studies to test the efficiency of chitosan: thiourea dioxide (TD) cleaning gel. TD proved to be the best candidate to reduce insoluble manganese oxides, over Hydroxylamine Hydrochloride and Hydroxymethanesulfinic Acid. Cleaning assays performed on stained granite samples collected at a historical quarry and in situ application on stained granite churches allowed removal of the stains to a satisfactory level. Similar results were obtained on stained glass jars.

KW - Chitosan

KW - Glass

KW - Granite

KW - Green cleaning gel

KW - Leclanché cells

KW - Manganese stains

UR - https://www.scopus.com/pages/publications/85121418253

U2 - 10.1186/s40494-021-00632-y

DO - 10.1186/s40494-021-00632-y

M3 - Article

AN - SCOPUS:85121418253

VL - 9

JO - Heritage Science

JF - Heritage Science

IS - 1

M1 - 160

ER -

Green chitosan: thiourea dioxide cleaning gel for manganese stains on granite and glass substrates

Resumo

ODS da ONU

Acesso ao documento

Outros arquivos e links

Impressão digital

Projetos

CITAR: Research Center for Science and Technology of the Arts

BIO4MURAL: Soluções inovadoras de biotecnologia para remoção de pigmentação e conservação preventiva de pintura mural cultural e historicamente relevante

Citação